I have a Trane SE1000 central air unit. Along with that I have a Trane Taystat340 programmable Thermostat. I have the temperature set for 71 degrees for cooling. However, during the really hot days the thermostat never reaches the 71 degrees I have it set for, for example, we had some days that were in the 90's and the thermostat was reading 76 degrees even after the sun went down. Is this normal?? I checked the air coming out of the vents and they are around 59-60 degrees but it just doesn't seem like the house is cooling down enough.
2007-07-09 03:11:56 · 4 answers · asked by hokiedokie24 2 in Home & Garden ➔ Maintenance & Repairs
I would have it serviced. It is probably dirty. Change the filter, clean the coils, and if that doesn't help get the freon checked.
2007-07-09 03:17:40 · answer #1 · answered by Larry 4 · 0⤊ 0⤋
I presume the a.c. is running all the time and you are unable to reach the set temperature despite continual running. I further presume that the filters have been cleaned, that the air flow through the compressor unit (outside) is ok and the compressor fins are clear. Of course if these units are dirty, clean them.
The cause is either an insufficient amount of refrigerant OR an undersized a.c. unit for the house.
An a.c. repair person can determine if you are low on refrigerant and add it if needed.
If the unit is undersized, you would have to replace it with a larger one. HOWEVER do not jump into this blindly. Oversizing is worse than undersizing.
I would look at insulation in ceiling and walls, covering sun exposed windows, checking attic ventilation which may be too small and thereby causing excess attic heat that then radiates through ceiling insulation to heat ceilings, etc before I replaced the a.c.
You do not state where you live. If the 90 degree temperatures are unusual for your area, upsizing is very wasteful. A 76 degree temperature is not so hot as to be a problem.
If the refrigerant is appropriate, and all you can get with continual running is 76 degrees, the relative humidity will be low which is really more desirable than is cold and moist conditions.
Most people want to beef up the a.c. (which means both the compressor and the evaporator units, not just one) and then overdo it. The temperature reaches set point quickly but the moisture has not been removed sufficiently so you have cold and damp conditions - less healthy and less comfortable. A 76 degree F 50% relative humidity will be a lot more comfortable than a 68 degree 70% relative humidity house.
2007-07-09 10:23:46 · answer #2 · answered by GTB 7 · 1⤊ 0⤋
It sounds like the unit is too small for the square footage of the house. It should be a little cooler out the vent, but it depends on where the duct work is running and if it's properly insulated.
2007-07-09 10:17:44 · answer #3 · answered by Anonymous · 1⤊ 0⤋
get it checked out.
2007-07-09 10:17:13 · answer #4 · answered by Anonymous · 0⤊ 0⤋