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Brian 162 Brian 162 is online now
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Join Date: Sep 2005
Location: Guelph Ontario
Posts: 2,593
Quote:
Originally Posted by cabmandone View Post
Below is a link to a helpful tool for deciding whether to upgrade or not. Keep in mind too that 410a has been phased out and coming across a new 410a unit is a bit difficult. It's more likely you'll end up with R32 or 454b unit which, I think, requires a sensor in the furnace or air handler. At a minimum your system is rated at 10 SEER if it's 25 years old.

https://www.seerenergysavings.com/
You’re correct. There’s a sensor attached to the a-coil for units with the new refrigerant. I think it has butane or propane? A former co-worker keeps me updated with work related stuff.
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Old 07-31-2025, 07:07 PM
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