2,901 posts, read 4,703,904 times 5,106 posts, read 5,680,938 times 6,939 posts, read 14,647,658 times Originally Posted by d4g4mNot sure if he checked that. FYI our unit is not a heat pump; we have AC and a gas furnace. FYI, it wasn't as hot last week and our unit seemed to work fine. Apparently, we only have this problem when the outside temperature is at least 110 degrees. I would expect our units to work fine up to at least 120 degrees, considering our other unit never had this problem. We replaced our filters last month. As stated, the technician checked for issues with airflow, and he didn't seem to find any problem in that regard. The refrigerant line doesn't appear to be frozen, so I don't think airflow is the issue. However, I do know that the zone that this particular unit cools does generally tend to be warmer than the other zone; in the winter our furnace for the other zone does tend to work harder than the one for the zone that we are currently having trouble cooling.

8,925 posts, read 33,192,515 times I can expect a lot of things outta just about anything- but realistically I KNOW that isn't going to happen. From your description I'd say, yeah there's probably nothing wrong with your A/C system. I'd look at other things like attic ventilation, attic insulation, windows (directional placement and U-Factor), roof color, placement of condenser unit/airhandler, and general construction details. All of these things can effect the efficiency of a climate control system. Well, our home is an Energy Star certified home, and we never had this problem in previous summers from what I recall. We have Low-E vinyl frame windows, R-30 loose-fill Owens Corning Pink fiberglass attic insulation, and R-19 composite cellulose wall insulation. Our house also has a Louisiana Pacific TechShield radiant barrier, which many experts consider to be more important than insulation in our climate. Our house is oriented north-south (front facing south), which is generally considered to be superior to an east-west orientation in terms of energy efficiency.

4,887 posts, read 4,691,677 times 3,632 posts, read 7,233,261 times Yours is a builder grade Puron unit. You have to be careful when specing the size of the units as Puron units in high heat areas lose efficiency when the temps go over 105F. outdoor ac unit fanThe critical point for Puron is 158.4F which means it no longer works at all compared to Freon R 22 of 208.4F. central air ac unit pricesThe issue as I see it is the unit was sized too small for your heat. recharge my home ac unitA 5 ton unit can be reduced quickly to the capacity of a 3 ton. It sounds like yours just can't keep up with the high heat. I've had Carrier units before, had them on my personal office building. They were a joke and soon got replaced with Ruud units. Ruud is all we install now as the units come with a great warranty and they just work without having any issues.

Might consider hanging shades on the outside of the house to kill the radiant heat on the walls, specifically the west wall. FWIW, we have the high heat here as well. It's not uncommon for the thermometer to be pegged at 125F. The wife keeps our Ruud unit at 70F inside the house. I call it "hang meat temperature". The unit cycles off and on about every 20 minutes. I can't imagine how low the temp would go if it was running non-stop. Originally Posted by Rabrrita The problem zone is in the southeastern part of the house. Our AC units are on the west side of the house. Quality ProsGuaranteeContact UsWhy is My Air Conditioner Blowing Hot Air?Air conditioners are an intrinsic part of our daily lives these days. Comfortable indoor air conditioning is a must especially to counter the hot and sweltering summer months. However, what happens when air conditioners do not function in the desirable fashion? What if your air conditioner starts blowing hot air? Needless to mention, it could be an essentially worrisome experience!

However, there is little cause for worry. Often, the problem arises because of simple malfunctions or lack of necessary precautions, and can be fixed quite easily. So, it is important to take action as soon as possible to nip the problem in the bud. Inexpensive, non-certified units may cost less at the outset, but you would end up paying much more on skyrocketing electricity bills and recurrent damage repairs.Begin by Buying Right Although functional problems with air conditioners are common, choosing the right model when you are making a purchase could go a long way in settling the problems considerably. According to the official website of the Green Energy Efficient Homes, procuring government certified Energy Star air conditioners not only ensures lower energy bills, but also provides for efficient operation of the unit with rarer malfunctions and breakdowns. Inexpensive, non-certified units may cost less at the outset, but you would end up paying much more on higher electricity bills and recurrent damage repairs.

Why Would Air Conditioners Blow Hot Air? Some common glitches that might be responsible for the hot air blow could include: 1. Check the Settings First— Often, a simple human error in the AC settings could be the reason for a hot air blowout. You might have flicked the selector switch to “heat” instead of putting it on “cool”. If such is the case, the heat mode sets on and you automatically receive warm air from the AC. All you need to do is to switch it back to “cool” mode again to resume proper functioning. 2. The Condenser and Compressor—If you have already checked the setting and it seems fine, it’s time to inspect the condenser and the compressor, both of which are present in the outside unit. Ascertain whether the outside power supply has been switched on. Without it, the system would function from the inside handler, but wouldn’t cool! Check upon air flow restrictions if any. You also need to check if the condenser coils have been blocked on account of dirt and debris accumulation.

This could have a serious impact on cooling. In fact, cleaning condenser coils needs to be a regular activity during the summertime. 3. A Clogged Air Filter—Although a dirty air filter may not be the primary cause of hot air blowout, it might be significantly responsible for a major compromise in cooling. A new air filter comes cheap and you can actually remove the old one and replace it quite easily. However, if you do not clean or replace your filters regularly, the dust that emanates from it can actually clog the condensing coils. Besides, this dust could also end up being the cause of serious illnesses like colds, dust allergies, asthma and so on. 4. Refrigerant Problems—Problems in the compressor or leaks could cause refrigerant related problems that might lead to complete stopping of cool air. This would primarily occur on account of reduced refrigerant charge. You might also notice a deposition of ice on the condensers both in the exterior or interior unit. However, these problems are best addressed by professionals.