What it is
HVAC contractor guide walks through heat pump installation planning, emphasizing load calculations and electrical system checks including panel capacity. Covers system type selection (ducted vs. ductless, air-source vs. geothermal) and installation steps from old unit removal through refrigerant charging and commissioning.
Why it matters
Electrical panel capacity is explicitly called out as part of the pre-installation site check, signaling a common retrofit bottleneck when upgrading from gas to electric heating. HVAC contractors and electricians must coordinate on panel adequacy before equipment install, affecting project timeline and cost. The constraint appears early in the workflow, influencing system selection and scope.
Evidence from source:
- Installation process includes ‘a site check of the air duct layout and the electrical system (including electrical panel capacity)’
- Process starts with load calculation, then proceeds to equipment removal, outdoor/indoor unit install, refrigerant line set, thermostat and electrical wiring, and final commissioning
- References DOE Building America cold-climate installation guidance for sizing and selection
Links
- Canonical source: https://www.superior-service.com/blog/installing-a-heat-pump/
- Player: /players/other/
- Topic: /topics/pathways-install/
- Topic: /topics/code-standards/
Open questions
- What percentage of heat pump retrofits trigger panel or service upgrades?
- How do HVAC contractors currently assess panel capacity—site visit, as-builts, or coordinate with EC?