1089 sq foot brick home built in 1954 in S.E. GA facing southeast with very little shade. On a Crawlspace with insulation between floor joists, blow in insulation in the attic about 6" deep, single payned wood windows, solid wood doors, blow in insulation attempted to be placed in walls, not sure of effectiveness.....
Was originally built with a floor furnace and an Attic Fan. Not sure when the 3.5 ton central heat and air was installed but the installer said the date of the original unit was 2001. This was a Bryant and continuously ran to keep the house at 78 degrees.
The bryant heat pump and air handler were replaced with a Trane Heat Pump XB-13 4TWB3042A and Hyperion XB Series 2 GAT2A0B42S31SA Air handler and XL802 thermostat.
Now the Trane runs continuously until it reaches temperature which it seems to reach any temperature it is set at. After it reaches temperature, then it turns on for about 10 mins and off for about 10 mins and so on and so forth until late at night and then stretches out the off time with the run time at about 10 mins.
The installer admitted to just replacing what we curently had installed, 3.5 ton for 3.5 ton. I told him about the cycling and he came out and measured the house, windows and doors to plug into a program and determine the recommended size, he called it a load test. He told me to call him today to report back how the system performed over the weekend and to let me know the results of the calculation program.
Anyway, I am not use to the unit turning off and on so often and maybe just worring myself. In y'alls experience does this seem right or is the unit oversized? Our plan is to replace the windows, doors and roof within the next two years, will replacing these, making the house more efficent, make the unit way oversized then?
Sorry for the long winded post, I have several thousand invested in this new system and just wanted to give as much information as possible, get as much advice/opinions as possible and have a great system that will last for years to come.