Talk of The Villages Florida - View Single Post - Variable Speed Inverter HVAC Redux
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Old 07-13-2025, 11:26 AM
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Quote:
Originally Posted by elevatorman View Post
I just got an estimate from Sun Kool for the Carrier Infinity Greenspeed 4 ton. $14,951. The same in a 3 ton from Sun Kool $13,146. Manual J is the industry standard for sizing a heat pump. There is free software on the internet like CoolCalc Manual J .

The salesman claimed to me I would save 35% on my heating and cooling portion of my energy bill, not on my energy bill. I spent $103.00 on cooling in June and in October I spent $8.00. This is according to SECO. In the winter months I may not even turn the heat on.

Rule of thumb, The monthly savings per 1.0 unit increase in SEER = 15.6 kWh × $0.14/kWh = $2.20 per month. My present Carrier installed in 2009 is 15 SEER so if I go to a 20 SEER $2.20 X 5 =$11.00 per month. X 12 = $132 per year and for 10 years $1320.00. Is that on the low end or on the high side? I hope that is on the low side.
I'm not sure on the SEER efficiency savings but so far, I'm saving about $50/month over my single speed basic 15 Seer Carrier system installed circa 2016. Your savings will also depend on what temperature you set your thermostat to for cooling and heating and the size of your home.