My home has two HVAC systems, one per floor. My second-floor system is 22 years old. It's located in a spacious area of the attic. The returns and runs to vents are all flex duct. The current system still works. I feel that it's oversized as it cycles on for 5 minutes, then off for 20 during the summer months. I know AC compressor is 3-ton. The second floor is ~1250 sq ft. All brick home with quality thermal windows and R-19 insulation. Home is in Upstate South Carolina.
Armstrong Furance-G8A75DC10-18
Carrier coil-CE3AXA036000ABAA
Payne unit outside- PA12NA036-A
I've called a few contractors for quotes and they both have just sized the new replacement system based on the old set up. I KNOW this isn't correct, they're being lazy and not doing a manual S, and J. They will not get my money.
My thought:
Have someone help me properly size what I need. Purchase a simple Goodman single stage 80% furnace, 16+ seer setup based on my needs and assemble it next to existing. Remove existing and hire someone to do the sheet-metal work and connect line-set/compressor etc. Because everything is flex-duct, it's not challenging complete.
Whoever installed my current furnace takes zero pride in their work.
Anyone else tackle HVAC on their own?
Armstrong Furance-G8A75DC10-18
Carrier coil-CE3AXA036000ABAA
Payne unit outside- PA12NA036-A
I've called a few contractors for quotes and they both have just sized the new replacement system based on the old set up. I KNOW this isn't correct, they're being lazy and not doing a manual S, and J. They will not get my money.
My thought:
Have someone help me properly size what I need. Purchase a simple Goodman single stage 80% furnace, 16+ seer setup based on my needs and assemble it next to existing. Remove existing and hire someone to do the sheet-metal work and connect line-set/compressor etc. Because everything is flex-duct, it's not challenging complete.
Whoever installed my current furnace takes zero pride in their work.
Anyone else tackle HVAC on their own?