The Fix-It Playbook — Heat Pump in Winter: Ice, Defrost & "Emergency Heat"

A heat pump works in winter as far south as the Gulf Coast and as far north as the outdoor unit can handle a hard freeze — but it behaves differently than a furnace, and a little frost on the coil isn't the same thing as a real problem.

Inside: Normal frost vs. an actual ice problem · Aux Heat vs. Emergency Heat, and why confusing them is expensive · The honest cost comparison · When to stop and call a pro · Troubleshooting · Printable heat-pump winter checklist.

Doing it yourself: free — understanding these settings costs nothing, and the difference in a mistaken week left on the wrong one can be substantial on the electric bill.
Calling a pro: a heat pump service call runs $75–200, with repairs averaging $150–650 (national average around $400). A defrost control board replacement, a common winter-specific failure, runs $200–500.

6 pages of labeled diagrams, parts lists and real numbers — no filler, no 40-minute video. Temperatures and measurements in both Fahrenheit/Celsius and feet/meters, so it works wherever you are. Ends with a printable checklist.

Instant PDF download: print it for the garage or follow it on your phone with the parts in hand. Yours to keep, no subscription.

Need more than this one job? The Heat Kit bundles all 5 furnace and heating-system guides — 25 pages — for $14.