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Anyone here done a home energy audit?
Posted on 8/3/15 at 5:18 pm
Posted on 8/3/15 at 5:18 pm
If so, who did you use?
I replaced the entire HVAC system and added more insulation in the attic of my townhome but I'm still coming home to a thermostat that reads 80. I program it to 76 when I'm not home and 74 when I'm home. On a hot day, the AC runs constantly from 3:30/4:30 pm til about 10 pm just to get to 74. shite is getting old.
TIA.
I replaced the entire HVAC system and added more insulation in the attic of my townhome but I'm still coming home to a thermostat that reads 80. I program it to 76 when I'm not home and 74 when I'm home. On a hot day, the AC runs constantly from 3:30/4:30 pm til about 10 pm just to get to 74. shite is getting old.
TIA.
4
Posted on 8/3/15 at 5:25 pm to jordan21210
check to see what the discharge air temperature is at the grills
the temperature should be in the range of 14-20 degrees lower the the space temperature. if you air is less the 14 degrees cooler then the space, you likely have a Freon charge issue, dirty evaporator coils, dirty condensing coil, or a dirty air filter. You are not getting the heat transfer you want
if you are getting a delta T in that range, you likely have an undersized unit or still have a bad insulation issue or an infiltration issue.
the temperature should be in the range of 14-20 degrees lower the the space temperature. if you air is less the 14 degrees cooler then the space, you likely have a Freon charge issue, dirty evaporator coils, dirty condensing coil, or a dirty air filter. You are not getting the heat transfer you want
if you are getting a delta T in that range, you likely have an undersized unit or still have a bad insulation issue or an infiltration issue.
Posted on 8/3/15 at 5:27 pm to jordan21210
Just had the same issue with mine (I live in a townhome also)
Turns out the entire system needed to be replaced (it was over 30 years old). At first, it wouldn't get any cooler than 80. Then it went out altogether. I spent a few days in a 90 degree house.
Also, the thermostat is going to read whatever temp it is "feeling". If your thermostat is upstairs next to the inside unit, it could be reading hot temps coming from the place where the unit is housed (in some cases that enclosure is not insulated and is as hot as the attic). Thus the thermostat reads the temp as high and keeps running to compensate, leaving the rest of the house freezing.
The only other issues I can think of are, it needs more freon or you need to clean the vent portions of the outside unit.
Turns out the entire system needed to be replaced (it was over 30 years old). At first, it wouldn't get any cooler than 80. Then it went out altogether. I spent a few days in a 90 degree house.
Also, the thermostat is going to read whatever temp it is "feeling". If your thermostat is upstairs next to the inside unit, it could be reading hot temps coming from the place where the unit is housed (in some cases that enclosure is not insulated and is as hot as the attic). Thus the thermostat reads the temp as high and keeps running to compensate, leaving the rest of the house freezing.
The only other issues I can think of are, it needs more freon or you need to clean the vent portions of the outside unit.
Posted on 8/3/15 at 5:28 pm to jordan21210
Needs freon
Posted on 8/3/15 at 6:21 pm to dcrews
quote:
Just had the same issue with mine (I live in a townhome also)
Turns out the entire system needed to be replaced (it was over 30 years old). At first, it wouldn't get any cooler than 80. Then it went out altogether. I spent a few days in a 90 degree house.
Also, the thermostat is going to read whatever temp it is "feeling". If your thermostat is upstairs next to the inside unit, it could be reading hot temps coming from the place where the unit is housed (in some cases that enclosure is not insulated and is as hot as the attic). Thus the thermostat reads the temp as high and keeps running to compensate, leaving the rest of the house freezing.
The only other issues I can think of are, it needs more freon or you need to clean the vent portions of the outside unit.
It's all of this lol. I'm starting to think we live in the same townhomes. Did you get a fix for your situation??
The system I replaced was a 30 year old Rheem. Put a 2.5 ton Rheem in...roughly 1200 sq ft townhome.
This post was edited on 8/3/15 at 6:22 pm
Posted on 8/3/15 at 6:43 pm to jordan21210
quote:
Anyone here done a home energy audit?
If so, who did you use?
This post was edited on 8/3/15 at 6:46 pm
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