HVAC Heating & Cooling Information and reviews

Category Archives: Air Conditioning

How to Fix Sweating Copper Pipes


How to Fix Sweating Copper Pipes

What you will learn from this article:
1) one of our readers submitted the question, How to Fix Sweating Copper Pipes – and we will answer her question.
2) a description of the problem with the sweating copper pipe
3) the name of the copper pipe causing the problem and why it is sweating
4) the repair of the sweating copper pipe to stop it from sweating
5) what you need to know about sweating pipes and any moisture problem in your house
6) lots of resource and related links to help you learn


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Supply Vent Myth – Does Closing Supply Vents Save?


Supply Vent Myth – Does Closing Supply Vents Save?

What you will learn with this post:
1) How modern duct systems are designed
2) How closing the supply vents effects the static pressure in the duct work
3) How closing supply vents effects modern HVAC equipment
4) How to save energy and therefore money
5) 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
6) How heating and cooling equipment ie furnace, air conditioner, or heat pump can be effected by closing off supply vents
7) Alternative methods used in commercial HVAC
8) Alternatives for residential HVAC


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Air Conditioner Causes Water Damage


Air Conditioner Causes Water Damage

Air Conditioner Causes Water DamageAir 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 it caused. 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


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Replace HVAC Compressor for Air Conditioner Repair


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 | AC Repair


Air Conditioner Condensing Unit Frozen | AC Repair

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 | HVAC Troubleshooting

Old Condenser

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 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.


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TUESDAY, June 30, 2015

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HVAC Tips: Helping You Learn

Air Conditioner & Heat Pump Tips: Additional Helpful Hints:
  • Always change your air filter on a monthly basis
  • Make sure all your supply vents are open and unobstructed
  • Keep area clean around indoor unit especially the return grills
  • Keep outdoor units free of leaves, grass, and debris including trash cans and/or children's toys or playthings like small plastic pools or playhouses.
  • Additionally your service technician will appreciate you not planting holly bushes near the outside unit
  • Lastly have system serviced every six months - once for heating and once for cooling before the season starts

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