Air Conditioner Circuit Board Troubleshooting Question – Hello, my name is Calvin and I am an HVAC Technician that graduated from a community college 2 years ago and I am still learning and know I have much more to learn before I think of myself as an expert. I have been running into a lot of circuit boards in air conditioners and heat pumps and I simply want to know what is the best way to troubleshoot and air conditioner circuit board? It seems like a lot of electronics and they never covered electronics too much in school. I do understand basic electrical circuits and how circuits work in the air conditioners and heat pumps I work on but more and more systems are getting electronic circuit boards and I would like to know the best way to troubleshoot these air conditioner circuit boards so I can make the repair.Thanks for your help and I have learned a lot from your website. I look forward to your answer! (more…)
How Much Refrigerant for the Air Conditioner Question: What amount of Freon would it take to service a unit that services a 1200 square foot residential house if it were completely depleted?
How Much Refrigerant for the Air Conditioner
Answer: We get questions like this a lot in our email and this is not easily answered especially when we are talking about charging an air conditioner or heat system. No matter how the system lost its charge of refrigerant (many people refer to it as Freon which is technically incorrect) there are many things you need to know before attempting to charge the air conditioner or heat pump with refrigerant (or Freon is you prefer). (more…)
Helping Your Air Conditioner – Beating the Heat
What do do when your air conditioner doesn’t cool your house properly? Take this short quiz to see if you know what to do when your air conditioner does not cool your house and runs all the time.
Air Conditioner Help
You can answer the question, Helping Your Air Conditioner, easier by reading this article at High Performance HVAC. As an HVAC technician I ran into problems like this so I wrote that article to help people and to answer that exact question. We hope the article helps you help your air conditioner and it helps you answer the question.
What you will learn from How to Fix Sweating Copper Pipes article:
- one of our readers submitted the question, How to Fix Sweating Copper Pipes – and we will answer her question.
- a description of the problem with the sweating pipe
- the name of the copper pipe causing the problem and why it is sweating
- the repair of the sweating copper pipe to stop it from sweating
- what you need to know about sweating pipes and any moisture problem in your house
- lots of resource and related links to help you learn
What you will learn with Supply Vent Myth article:
- How modern duct systems are designed
- How closing the supply vents effects the static pressure in the duct work
- How closing supply vents effects modern HVAC equipment
- How to save energy and therefore money
- Where to obtain the books and/or software to learn how professionals design duct systems and do load calculations for sizing heating and cooling systems
- How heating and cooling equipment ie furnace, air conditioner, or heat pump can be effected by closing off supply vents
- Alternative methods used in commercial HVAC
- Alternatives for residential HVAC
Air Conditioner Causes Water Damage Question – Hello, We need to ask you about water damage and how an air conditioner can cause this kind of damage. The whole ceiling in one of rental properties just fell into the living room. All the drywall and insulation from the attic fell and caused damage to our tenants furniture. Thank God the tenants were not at home and injured when the ceiling fell in. The insurance adjuster came out and looked at it and said the problem was because the filter was clogged and air conditioner froze up inside the air handler. When the air conditioner turned off the ice melted and overflowed the pan. It continued to slowly overflow the pan for a few hours until the ice completely melted. The water logged the drywall in the ceiling until it eventually fell in and caused the damage. The insurance adjuster seemed to be very knowledgeable about things like this and I was wondering if a dirty filter could cause such a problem and make the air conditioner ice up? We look forward to your answer. Thanks, Val (more…)
Replace HVAC Compressor for Air Conditioner Repair Decision | HVAC Refrigeration Question
Replace HVAC Compressor for Air Conditioner Repair – Question – Richard – I am an HVAC technician and have read all of your articles on refrigeration and compressors. Great information and it has helped to hone my skills and offer better service for my customers. Thanks! I was wondering what your experience is with replacing compressors. How do you arrive at the decision to replace a compressor technically speaking of course? Do you recommend repairing the air conditioner by replacing the compressor or replacing the central air conditioner? I look forward to reading your answer. Brett Des Moines, WA
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Air Conditioner Condensing Unit Frozen – Richard – Early last month we turned our air conditioner on and it worked fine for a few days. Then I noticed it was getting a little warm in the house so I went around and checked the Air Conditioner.
Air Conditioner Condensing Unit Frozen | AC Repair
Of course I checked the thermostat first and then the air filter. I went up into the attic to look at the air handler. I did not notice anything out of the ordinary that I am not used to seeing but I am not an expert. Then I went out to the the condensing unit on the back patio and I saw some ice inside the condensing unit. The compressor and the all the pipes connecting to the compressor were a block of ice and frozen solid. I turned everything off and called the HVAC contractor I am used to dealing with. They told me they would send someone out to take care of it. A few hours after making the call I got a call from the technician. He told me there is probably very little he could do for me now as we would have to let the ice melt before he could properly troubleshoot the problem. We agreed for him to come the next morning to check it out. He told us to leave the air handler blower fan on but make sure the condenser was off. He told me to go to the breaker box and turn the condensing unit off and use the thermostat for Fan Only operation. We did exactly as he said. (more…)
Air Conditioner Components
Air Conditioner Components – There are big differences between heat pumps and air conditioners. While the air conditioner provides cooling the heat pump will provide heating and cooling so the components inside the air conditioner differ from the components inside the heat pump system. I constantly get emails from people asking if they can convert their air conditioner to a heat pump and of course they can but it is not recommended. I have even devoted an article to it for those who are considering converting their air conditioner to a heat pump. After all, if you sit a heat pump next to a condenser it would be impossible to tell the difference from the air conditioner condenser to the heat pump condenser unless you looked inside the unit and was able to identify the different components from a heat pump to an air conditioner. Here are the basic components of an air conditioner that make the air conditioner cool your home or business. (more…)
Delay Timers and the Air Conditioner Condenser – Air Conditioners are big HVAC refrigerators. Air Conditioners and Heat Pumps use the HVAC refrigeration cycle to transfer heat from a place where it is not wanted (inside absorbing heat with the evaporator coil) to a place that makes no difference (outside using the condensing unit)(in the cooling cycle). The heart of any HVAC air conditioning, heat pump, or refrigeration system is the compressor which pumps the refrigerant through the HVAC air conditioning system. When the refrigerant leaves the compressor it is compressed and therefore a higher pressure than it was before it entered the compressor inside the condensing unit. This pressure remains constant (give or take under certain conditions) until it passes through the metering device where the pressure and temperature are reduced. This low pressure remains constant (again give or take under certain conditions) until it again reaches the compressor inside the condensing unit and is compressed again. (more…)