Any HVAC techs out here? Question about single vs two stage A/C compressors.
I'm looking to replace my whole system. Furnace, coils, compressor. 21 years old original to the house. Had a couple of different companies come out for estimates, and I'm just looking for an unbiased opinion from someone that's not also trying to sell me something. I'm down to a 4 ton 16 seer single stage Carrier or a 4 ton 17 Seer 2-stage Carrier.
I live in Memphis so humidity in the summer is a thing. My current A/C is single stage and it's done fine, but I am interested in two stage. If I understand right, two stage compressors can run at 60-70% to 100% instead of full 100% on then off. Two stage compressors run longer so they pull more humidity out of the air. And even though they run longer, since they can run at a reduced power it would also be cheaper on energy bills than a single stage. And also since they run longer they can keep the house temp closer to what I set the thermostat at?
The downside is the increased cost up front? I'm ok with paying a little more for a 2 stage system if it means reduced energy bills vs a single stage month to month. I just don't want to increase my month to month costs to increase comfort. I'm not really uncomfortable, but I like the idea of reduced energy useage when not needed if it really does translate to lower bills month to month.