Air-source heat pump outdoor unit beside a house in the snow

Generic photo: PeterEastern · CC BY-SA 4.0

Field pattern: 'heat pump air feels cold' (normal 90-110°F supply air vs a real fault)

A properly working heat pump typically supplies air around 90-110°F, while a furnace delivers much hotter air. Air below skin temperature moving across a hand feels cool even though it is heating the house. Measure supply/return and watch whether the house reaches setpoint before chasing refrigerant problems.

Cross-checked ~30 min easyBrands: All

Before you start

Charge and pressure checks are BLOCKED (EPA 608): refer if the heat pump is truly not heating
Outdoor unit has line voltage: CAUTION

Diagnostic steps

Unlock all 6 steps with expected values

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