Guides
Plain-English, cited explainers for buying and installing a mini-split or heat pump.
R-410A vs R-32 vs R-454B — the refrigerant change explained
What the low-GWP transition means for serviceability and cost, and which brands went which way.
Can you install a mini-split yourself?
The EPA-608 rule, true DIY vs "pre-charged", and the warranty catch.
More guides coming.