There could be over a hundred reasons that your central air conditioning system isn’t working right, not turning on, not cooling etc. Most people are just very quick to go out and call a professional HVAC technician to come out and fix it for them, and also pay a big fee for something that could be as simple as changing an air filter. So that’s why this topic I am going to go through my top five central air conditioner problems.
My central air conditioning isn’t cooling what should I do ?
1. The first thing that you should do is check your air filter. If you are a home owner this is most likely a given and you already know this but if you are still young in your teenage years and finally got your own apartment, and have no basic knowledge on how air conditioners work then you must realize you have to check your air filter at least once a month. If the AC is on and no air is blowing out that means no air is getting sucked into the coiling coils because either the air filter or the coiling coils are clogged up. So check your air filter first, if you have trouble locating where the air filter is it is right next to the inside air conditioner unit, or air handler or evaporator whatever you want to call it. Sometimes the air handler is in the attic, in this case the filter is most likely located in the ceiling right by it, or the air handler could be located in a closet, if this is the case the filter should be right in front of the coils. Okay so let’s say that the air filter was the problem and it was heavily clogged, you remove it now there is air blowing out through the vents and you can feel the place start cooling. You need to replace that filter with a new one, if not dirt and dust is eventually going to clog up the evaporator coils and you and that’s just going to cause future problems.
2. You check you air filter and your evaporator coils and they are both clean. You’re outside condensing unit could be low on refrigerant. Now unless you are HVAC certified you cannot check the refrigerant pressure on the condensing unit, you would also need gauges to do this. But what you can do is go outside where your condensing unit is and put your hand over the fan while it is running. You should be feeling warm air if the condensing unit is working properly, because remember, the way that air conditioning works is it pulls heat from inside the home and shoots it out of the outside unit. If your outside unit is shooting out cool air then your unit probably needs a refrigerant charge.
3. AC will not turn on at all. 1st thing you check is the breaker panel to see if a breaker has been tripped. There’s many reasons why a breaker could trip, so just simply reset the breaker, if it trips instantly after you reset it you have a faulty ground somewhere in the electrical distribution system and will need to call an electrician, or if you have common electrical knowledge just shoot me a comment and I can try to help you fix the problem.
4. If the thermostat isn’t working at all you could have a tripped float switch. A float switch is a safety device that’s installed on most newer air handlers, its designed to shut off all the power to the thermostat if the condensate line gets clogged up from too much slime sludge built up in the piping. Basically the evaporator produces condensate and it falls in the drip pan on the air handler, the condensate then drain outside via pvc piping. After a while the piping will build up slime sludge and eventually clog the line leaving the condensate nowhere to drain. So instead of the condensate flooding your home it pushes up on the float switch and shuts the24volt power off to the thermostat. So make sure that you vacuum out and clean your condensate line twice a year.
5. Your outside condensing coils could be clogged up or dirty. If you have a lot of leaves and loose dirt around your outside AC unit it could get sucked into the coils and eventually clog it up causing the AC to work harder and less efficient. You can clean the coils by buying a coil cleaning solution from a local HVAC supplier or Home Depot. Or you can secure the power to the unit and spray the coils with a high pressure water hose, although I don’t recommend this technique, but it does work
.
Now there’s many other things that could be preventing your air conditioner to be working properly but the problems above are the most common that I’ve ran into and most can be easily fixed without calling a professional. So if you have any questions about your central air conditioning not cooling fire away and I will do my best to answer them in the comments section.
central air conditioning, AC problems, HVAC
Saturday, July 19, 2008
Tuesday, July 15, 2008
What SEER Air conditioning unit is best for you
I’m going to talk about the types of central air conditioners that are out right now from the most expensive energy efficient ones to the cheapest less efficient ones. Central Air Conditioners are rated by SEER (Seasonal Energy Efficiency Rating), 23 being the highest SEER.
Let us start with the most efficient, the high-efficiency central air conditioners, 16-23 SEER. The higher the efficiency the air conditioner is the more its initial cost is going to be. But your electric bill will be a hell of a lot cheaper. This is something to look into if you are getting a house built and plan on living there for a long time. This would also be a good choice to get a high efficiency unit if you live in a neighborhood where the electric costs are expensive compared to other areas. Most of the 16-23 SEER units are two stage cooling which means that they cycle on and off less, another feature is that they all use R-410A instead of the ozone depleting refrigerant R-22 which is found in most of the lower efficient central air conditioners. The high efficiency models start at about $3000.
Mid efficiency central air conditioner units, 14.5-17 SEER. Not as good as the high efficiency but most of these units also use the R-410a refrigerant instead of FREON. They probably won’t have the 2 stage cooling but these are still great units and aren’t that expensive on the power bill.
Minimum efficiency central air units, 13-14.5 SEER. The government has declared that the least efficient central air conditioner has to be at least a 13 SEER. Just because this is on the bottom of the list does not mean that it’s not going to save you money. If you are replacing a unit that is ten or more years old with a 13 SEER you will cut your electric bill in half easily. Ten years ago 13 SEER was unheard of, this is a great choice if you are renting out a house or you have a low budget. Most apartment complex’s don’t even have 13 SEER central air conditioning in them so there is nothing wrong with 13 SEER at all.
Central air, SEER, air conditioner efficiency, AC efficiency
Let us start with the most efficient, the high-efficiency central air conditioners, 16-23 SEER. The higher the efficiency the air conditioner is the more its initial cost is going to be. But your electric bill will be a hell of a lot cheaper. This is something to look into if you are getting a house built and plan on living there for a long time. This would also be a good choice to get a high efficiency unit if you live in a neighborhood where the electric costs are expensive compared to other areas. Most of the 16-23 SEER units are two stage cooling which means that they cycle on and off less, another feature is that they all use R-410A instead of the ozone depleting refrigerant R-22 which is found in most of the lower efficient central air conditioners. The high efficiency models start at about $3000.
Mid efficiency central air conditioner units, 14.5-17 SEER. Not as good as the high efficiency but most of these units also use the R-410a refrigerant instead of FREON. They probably won’t have the 2 stage cooling but these are still great units and aren’t that expensive on the power bill.
Minimum efficiency central air units, 13-14.5 SEER. The government has declared that the least efficient central air conditioner has to be at least a 13 SEER. Just because this is on the bottom of the list does not mean that it’s not going to save you money. If you are replacing a unit that is ten or more years old with a 13 SEER you will cut your electric bill in half easily. Ten years ago 13 SEER was unheard of, this is a great choice if you are renting out a house or you have a low budget. Most apartment complex’s don’t even have 13 SEER central air conditioning in them so there is nothing wrong with 13 SEER at all.
Central air, SEER, air conditioner efficiency, AC efficiency
Saturday, July 12, 2008
Types of central AC filters
So if you want to learn a little bit about AC filters for your central air conditioning and heating then you have came to the right place. Certain people have different needs for different types of filters, like some filters restrict air flow but filter out more allergens, some filters are don’t restrict the air flow and let more allergens and stuff through. The air that is circulating inside your home can be up to 5 times worse than the outside air.
MERV Rating
MERV (Minimum Efficiency Reporting Value) is the rating of an air filter to trap miniscule particles ranging from 2 t0 10 microns. MERV rating are typically numbered 1-12 , where 1 being the least efficient of catching small particles and of course 12 being the most efficient at catching particles. So when you are choosing what type of AC filter you are going to use pay attention to the MERV rating.
Fiberglass Filters
These are typically disposable and are probably the least efficient AC filters but are also the cheapest. Mostly all apartment complex’s and hotels give these away for free to their residents, although not very good at catching allergens they will keep the coils nice and clean.
Pleated air filter
Pleated air filters are very popular and they do a very good job of capturing particles, they come in high MERV ratings to unlike the Fiberglass AC filters. Pleated AC filters are probably the number one alternative to permanent AC filters.
Then there are many other types of AC filters that are out there, like electrostatic filters, which are one of the most efficient and barely disturb the air flow at all. But the electrostatic filter isn’t the most efficient for your Central AC system. The Hepa ac filters are probably the most efficient at removing allergens at about 99% depending on what kind you get. But they do restrict the airflow and are not the best filter for your central air conditioning. Hepa Filters are common in places where clean air is a must like hospitals and dental offices etc.
So it’s all up to you and your likes and needs are to choose what kind of AC filter you want to pick for your central air conditioning and heating that would benefit you the best, til next time.
AC Filter, Furnace Filter, Central Air Conditioning
MERV Rating
MERV (Minimum Efficiency Reporting Value) is the rating of an air filter to trap miniscule particles ranging from 2 t0 10 microns. MERV rating are typically numbered 1-12 , where 1 being the least efficient of catching small particles and of course 12 being the most efficient at catching particles. So when you are choosing what type of AC filter you are going to use pay attention to the MERV rating.
Fiberglass Filters
These are typically disposable and are probably the least efficient AC filters but are also the cheapest. Mostly all apartment complex’s and hotels give these away for free to their residents, although not very good at catching allergens they will keep the coils nice and clean.
Pleated air filter
Pleated air filters are very popular and they do a very good job of capturing particles, they come in high MERV ratings to unlike the Fiberglass AC filters. Pleated AC filters are probably the number one alternative to permanent AC filters.
Then there are many other types of AC filters that are out there, like electrostatic filters, which are one of the most efficient and barely disturb the air flow at all. But the electrostatic filter isn’t the most efficient for your Central AC system. The Hepa ac filters are probably the most efficient at removing allergens at about 99% depending on what kind you get. But they do restrict the airflow and are not the best filter for your central air conditioning. Hepa Filters are common in places where clean air is a must like hospitals and dental offices etc.
So it’s all up to you and your likes and needs are to choose what kind of AC filter you want to pick for your central air conditioning and heating that would benefit you the best, til next time.
AC Filter, Furnace Filter, Central Air Conditioning
Thursday, July 10, 2008
A few tips to make your central air conditioning run easier
This topic I am going to cover a few easy ways to make the most of your Central Air Conditioning unit. The first thing I want you to do to is keep the air flowing. How ? Easy, fans, fans, fans, keep your ceiling fans running all of the time, keep your ground fans running all the time. This will keep the colder air circulating throughout your house making your central air condition not have to work as hard. See the Air Handler pulls the hot air from the house then discharges out of the house through the condensing unit fan. By keeping house fans on all the time this makes the Central air systems job a lot easier and it will also spread the cool temperature around the house. Running fans will save you money on your electric bill too, sure having fans running constantly uses electricity but nowhere near the electricity of a constant running central air conditioning system. So if I haven’t made this clear enough, RUN FANS CONSTANTLY.
Another way, is to make sure that your windows are well insulated. One way to do this is by tinting them, it may be a bit pricey but well worth it in the long run if you plan on living in your current home for a long time. You could also apply caulking to all the corners and edges of the windows on the inside, this will also help keep the window insulated. If you want to take your window insulation a step further you could insulate the outside of your window panes with something like solar seal, similar to caulking but it is not really make for indoor use since it has some cancerous chemicals inside of it.
And most importantly as I have discussed recently, change your damn air filter once a month !! I hope you take these few tips into consideration, to keep your Central Air Conditioning running good and keeping you cool.
Central air conditioning, Central air
Another way, is to make sure that your windows are well insulated. One way to do this is by tinting them, it may be a bit pricey but well worth it in the long run if you plan on living in your current home for a long time. You could also apply caulking to all the corners and edges of the windows on the inside, this will also help keep the window insulated. If you want to take your window insulation a step further you could insulate the outside of your window panes with something like solar seal, similar to caulking but it is not really make for indoor use since it has some cancerous chemicals inside of it.
And most importantly as I have discussed recently, change your damn air filter once a month !! I hope you take these few tips into consideration, to keep your Central Air Conditioning running good and keeping you cool.
Central air conditioning, Central air
Change you Air Conditioning Filter !!!
Changing your air filter will keep your central air conditioning running smooth just like it is supposed to. If you don’t change your air filter eventually dust and allergans will build up on it, and eventually enough dust to restrict the air flow going into the coils. This is not good for the central air conditioner nor is it good for your power bill, most of all it’s not going to keep your house cool. If enough dust builds up it could even freeze the Freon lines from the coils to the outside condenser.
If you find that your coils and Freon piping is frozen due to a dirty filter all you have to do is turn the AC thermostat to the “off” position. Then turn the fan on the thermostat from “auto” to the “fan” position. This will speed up the process of the coils and the piping to defrost, it will also help keep the ice from leaking onto the floor. The frozen coils and piping usually take about an hour or so to defrost depending on what the inside and outside temperature is. While you are waiting for the unit to defrost drive your ass up to the store and buy a new air filter.
The Reason you need an air filter
The air filter filters out all the crap you don’t want to breath in, pollens and dust and stuff, so if you’re running you central air conditioner without an air filter installed your just making the air in the house worse. Not only are you breathing in more pollens and dust you are dirtying up your coils, dirtying your coils will make your unit work harder than it needs to and again, it will run up you’re power bill and the home will be less cool. So make sure you always have an air filter installed so you not making your central air conditioning work too hard ok?
Central air conditioning, Air Filters, AC Filters
If you find that your coils and Freon piping is frozen due to a dirty filter all you have to do is turn the AC thermostat to the “off” position. Then turn the fan on the thermostat from “auto” to the “fan” position. This will speed up the process of the coils and the piping to defrost, it will also help keep the ice from leaking onto the floor. The frozen coils and piping usually take about an hour or so to defrost depending on what the inside and outside temperature is. While you are waiting for the unit to defrost drive your ass up to the store and buy a new air filter.
The Reason you need an air filter
The air filter filters out all the crap you don’t want to breath in, pollens and dust and stuff, so if you’re running you central air conditioner without an air filter installed your just making the air in the house worse. Not only are you breathing in more pollens and dust you are dirtying up your coils, dirtying your coils will make your unit work harder than it needs to and again, it will run up you’re power bill and the home will be less cool. So make sure you always have an air filter installed so you not making your central air conditioning work too hard ok?
Central air conditioning, Air Filters, AC Filters
Wednesday, July 9, 2008
A little bit of info about Central Air Conditioning and Heating
Here you will find a brief introduction about central air conditioning and heating. Now as everyone knows there are times of the year when your house is going to feel like a melting pot, and then in the winter it’s going to feel like an igloo. It doesn’t have to be like this, we just need a system to efficiently pull the heat out of the house in the summer and a system to warm up the frigid air in the winter time so our lips don’t freeze together and the beer bottle won’t stick to our hand when we try and take a sip! This is where the combined central air conditioning and heating system will greatly come into play.
Central air conditioning and heating systems are dominating over the puny and ugly window AC units. One of the million reasons is because that the central air conditioning systems have vents that are going into every room in the house, office, or business. The air gets sucked in through the evaporator coils then the air flows out of the vents in other rooms and such via air ducts. Central air conditioners also have the upper hand over the window unit because they run a lot quieter. Window units are very rarely quiet, they sit there in your window trying to cool off the room you’re in while making a constant humming and buzzing noise over and over. While the central AC has the noisiest part (the condenser and fan motor) placed outside of the house where it can barely be heard.
Another great advantage that central AC and heating has on the annoying window unit is, again, it is outside, meaning it is not going to block the beautiful view (or ugly view) outside at all. And most of all you can switch from heat to air with just the click or tap of a button. But yes there are central systems that aren’t combined in heating and cooling but I am not getting into that at the moment.
Lots of common folk still use the trusty ol window air conditioners, which will work great just to cool a 400 square foot room, but when it comes to winter time, more than likely you aren’t going to be running your window unit unless you have a room full of pet penguins, you would probably be utilizing a portable heater. If you have a house with 6 bedrooms you would need a crap load of window units and portable heaters to keep’em all comfy wouldn’t you? Window units are no longer the new investment to keeping your house cool, but they will probably be around for a long time, they will just be getting less and less popular as the years zoom by.
Nowadays just about every new home built today is built with central air conditioning and heating. I mean could you imagine that you were inspecting houses to by with a realtor and he or she shows you this wonderful house with all new appliances and cabinetry, with a screened in back porch with a swimming pool, and then says “oh ya, there’s no central AC in this house, but there is a Home Depot 1 mile from here that has a GREAT deal on window units”! That isn’t going to happen people. Central air conditioning and heating systems are just as much part of a home as a kitchen and bathtub, just as much to a home pool in New York with a pool water heater installed, just as much to watching a football game and drinking a beer, Ok I think you get the idea.
How do I pick what type of central air I want?
So let us say that you are planning on building a house, or just would really like to upgrade from your old 9 SEER AC unit, you would need to know what type and size of central air conditioner you would want the contractors or whomever to install. First thing you would want to look into would be the SEER (Seasonal Energy Efficiency Ratio). The way that SEER is determined is by dividing the cooling capacity of an air conditioner that is constantly on by the electrical input that’s required to run it. Then the efficiency of the air conditioner is ranked by a number. The higher the SEER rating of the air conditioner the better the unit will run, and the more you will save on your already overpriced electric bill. As of December 31st 11:59:59 P.m. the United States requires that all central air conditioners have a SEER rating of at least 13. While I’m still bashing the window units, it still isn’t required for a window unit to have a rating of 13 SEER, they are commonly 10 Seer, so this is another reason why central air conditioning systems are better than window units.
Another consideration you will have to take in before purchasing a central air and heating system is what size unit your house is going to need. There are a lot of different factors that help decide the ton to square foot ratio for cooling and heating. Some of these are how well your home is insulated, what kind of condition are the windows in and if they have a window tint on them, how many stories the house has, and of course what the local average energy bill is. For example, let us say that we have an 1150 square foot home in Arizona just off a small dirt road, there are no trees around the home and the skies are usually clear. This home might require a 3-3½ ton AC unit. Now say you have another home that is in Southern Georgia, on a beautiful block in a neighborhood that has many tall trees surrounding the home, which would be filtering out some of the sunlight, the home was just built maybe less than a year ago with insulation inside the drywall, this 1150 square foot home may only require a 2 ton air conditioner. Although the temperature outside, according to the weather reports might be very similar among the two different homes, the house in Georgia is going to require a smaller unit to keep it cool do to the insulation factor.
Last thing I want to babble about central air conditioning systems is FREON and the phaseout. A few years ago the EPA has decided to slowly phase out air conditioners that use R-22 (ozone depleting refrigerant). In 2010 it will be illegal for companies to manufacture air conditioners that use R-22. In 2010 they will be using air conditioners that use the non ozone depleting refrigerants, such as R-410A . There’s a few AC companies that are already marketing air conditioning systems using R-410A. So what does this mean for the R-22 systems?
They will continue to manufacture R-22 up until the year 2020. After that all of the R-22 air conditioner units will be serviced with recycled R-22. Now if every Maintenance Man or certified HVAC technician followed the EPA regulations for handling Freon, (you HVAC guys know what I mean) we could service these systems for about 20 more years until the compressor just eventually burns out and dies.
Can R-22 systems be converted into 410A systems?
No. They cannot, the newer ozone friendly systems that use refrigerants such as R-410A are going to be designed for about twice the pressure of the R-22 systems. The compressors and valves on the R-22 wouldn’t be able to handle the higher pressure. So by just switching the refrigerant isn’t going to work.
That’s all I have for today if you’re looking at purchasing a new central air conditioning and heating system.
central air conditioning, central air, hvac, SEER,
Central air conditioning and heating systems are dominating over the puny and ugly window AC units. One of the million reasons is because that the central air conditioning systems have vents that are going into every room in the house, office, or business. The air gets sucked in through the evaporator coils then the air flows out of the vents in other rooms and such via air ducts. Central air conditioners also have the upper hand over the window unit because they run a lot quieter. Window units are very rarely quiet, they sit there in your window trying to cool off the room you’re in while making a constant humming and buzzing noise over and over. While the central AC has the noisiest part (the condenser and fan motor) placed outside of the house where it can barely be heard.
Another great advantage that central AC and heating has on the annoying window unit is, again, it is outside, meaning it is not going to block the beautiful view (or ugly view) outside at all. And most of all you can switch from heat to air with just the click or tap of a button. But yes there are central systems that aren’t combined in heating and cooling but I am not getting into that at the moment.
Lots of common folk still use the trusty ol window air conditioners, which will work great just to cool a 400 square foot room, but when it comes to winter time, more than likely you aren’t going to be running your window unit unless you have a room full of pet penguins, you would probably be utilizing a portable heater. If you have a house with 6 bedrooms you would need a crap load of window units and portable heaters to keep’em all comfy wouldn’t you? Window units are no longer the new investment to keeping your house cool, but they will probably be around for a long time, they will just be getting less and less popular as the years zoom by.
Nowadays just about every new home built today is built with central air conditioning and heating. I mean could you imagine that you were inspecting houses to by with a realtor and he or she shows you this wonderful house with all new appliances and cabinetry, with a screened in back porch with a swimming pool, and then says “oh ya, there’s no central AC in this house, but there is a Home Depot 1 mile from here that has a GREAT deal on window units”! That isn’t going to happen people. Central air conditioning and heating systems are just as much part of a home as a kitchen and bathtub, just as much to a home pool in New York with a pool water heater installed, just as much to watching a football game and drinking a beer, Ok I think you get the idea.
How do I pick what type of central air I want?
So let us say that you are planning on building a house, or just would really like to upgrade from your old 9 SEER AC unit, you would need to know what type and size of central air conditioner you would want the contractors or whomever to install. First thing you would want to look into would be the SEER (Seasonal Energy Efficiency Ratio). The way that SEER is determined is by dividing the cooling capacity of an air conditioner that is constantly on by the electrical input that’s required to run it. Then the efficiency of the air conditioner is ranked by a number. The higher the SEER rating of the air conditioner the better the unit will run, and the more you will save on your already overpriced electric bill. As of December 31st 11:59:59 P.m. the United States requires that all central air conditioners have a SEER rating of at least 13. While I’m still bashing the window units, it still isn’t required for a window unit to have a rating of 13 SEER, they are commonly 10 Seer, so this is another reason why central air conditioning systems are better than window units.
Another consideration you will have to take in before purchasing a central air and heating system is what size unit your house is going to need. There are a lot of different factors that help decide the ton to square foot ratio for cooling and heating. Some of these are how well your home is insulated, what kind of condition are the windows in and if they have a window tint on them, how many stories the house has, and of course what the local average energy bill is. For example, let us say that we have an 1150 square foot home in Arizona just off a small dirt road, there are no trees around the home and the skies are usually clear. This home might require a 3-3½ ton AC unit. Now say you have another home that is in Southern Georgia, on a beautiful block in a neighborhood that has many tall trees surrounding the home, which would be filtering out some of the sunlight, the home was just built maybe less than a year ago with insulation inside the drywall, this 1150 square foot home may only require a 2 ton air conditioner. Although the temperature outside, according to the weather reports might be very similar among the two different homes, the house in Georgia is going to require a smaller unit to keep it cool do to the insulation factor.
Last thing I want to babble about central air conditioning systems is FREON and the phaseout. A few years ago the EPA has decided to slowly phase out air conditioners that use R-22 (ozone depleting refrigerant). In 2010 it will be illegal for companies to manufacture air conditioners that use R-22. In 2010 they will be using air conditioners that use the non ozone depleting refrigerants, such as R-410A . There’s a few AC companies that are already marketing air conditioning systems using R-410A. So what does this mean for the R-22 systems?
They will continue to manufacture R-22 up until the year 2020. After that all of the R-22 air conditioner units will be serviced with recycled R-22. Now if every Maintenance Man or certified HVAC technician followed the EPA regulations for handling Freon, (you HVAC guys know what I mean) we could service these systems for about 20 more years until the compressor just eventually burns out and dies.
Can R-22 systems be converted into 410A systems?
No. They cannot, the newer ozone friendly systems that use refrigerants such as R-410A are going to be designed for about twice the pressure of the R-22 systems. The compressors and valves on the R-22 wouldn’t be able to handle the higher pressure. So by just switching the refrigerant isn’t going to work.
That’s all I have for today if you’re looking at purchasing a new central air conditioning and heating system.
central air conditioning, central air, hvac, SEER,
Tuesday, July 8, 2008
Brief summary of me and central air conditioning experience
Hello everyone and welcome to my 1st post in D.Weps Central Air Conditioning Guide. In this initial post I am just going to explain a little about myself and what I do for a living. First off as the title says my name is D.Wep, thats not my birth name but it is my nickname and its what I go by so feel free to call me that ok ? I currently work in Central Florida by the beaches, as a maintenance technician for an apartment complex that has about 500 units. Everyone one of them has central air conditioning and heating installed. I have worked at this apartment complex for years and many like it and have serviced many central a/c and heating systems. I am knowledgeable in troubleshooting all angles of the A/C and heater from the electrical components to leak testing and more. I have serviced thousands of central air conditioner units and in this blog I will be sharing all of my knowledge of what systems work better then others, troubleshooting, replacing units, SEER ratings and much more. So please feel free to stick around and learn a little bit about central air conditioning.
Central air conditioning and heating, maintence man
Central air conditioning and heating, maintence man
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