Talk of The Villages Florida - View Single Post - Question about heating and air conditioning unit
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Old 02-05-2021, 01:00 PM
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Quote:
Originally Posted by HJBeck View Post
Most units aren’t going to last 15 years. I would bet your existing unit is a SEER 14. Technology has changed a lot, allowing for optional SEERS of 19 to 21. By upgrading to a 19 SEER UNIT or above you will get your money back over the life time of the unit in electric savings. Bad part is that a 19 SEER UNIT will start at $12K.
In a few words NO, a higher SEER WILL NOT pay for itself in savings. You are the victim of a salesman's bad math

First I know 50 - 60% of an all electric homes electricity usage is hvac. I tracked electricity cost with my a monitor which checked usage 10,000 times a second.

Let's say all of your SECO bill is electricity cost (ignoring service charges), of the annual 1,200 to 1,700 bill is hvac or 600.00 to 1,020. An increase for for a 14 to 19 SEER unit is 26.3% savings of hvac costs, WOOT!

So 600.00 to 1,020 hvac cost equates to 157.80 to 268.26 in savings. Using your numbers a 5,800 upgrade to a 19 SEER unit over the overpriced 6,200 unit will take 21.62 to 36.75 years to pay for itself.

It pays to comfirm the facts.