A heat pump is an electrical appliance — and a large one
In sales materials, a heat pump is presented as "cheap heating from the air". From the perspective of the electrical installation, it is a device that, on a frosty day — together with auxiliary heaters — can draw several to over a dozen kW. Added to this is the question of single- or three-phase power supply: most pumps of sensible power operate on three phases, and not every older house has them.
What we check in a pre-purchase audit
- connection and contractual power — whether the house can "handle" the pump along with induction, boiler, and the rest; if not, what increasing the power looks like and how long it will take;
- distribution board — space for new circuit protection, condition of devices, surge protection (the pump's inverter requires it);
- dedicated circuit — the pump cannot be on a socket circuit; we calculate the cross-section and route;
- correct RCD type — devices with an inverter require an RCD resistant to currents of a different nature than standard household appliances; a standard RCD may trip for no reason or — worse — fail to operate;
- earthing and equipotential bonding — the foundation of safety for any "electrical" boiler room.
The correct order of decisions
First, assess the installation, then choose the device — not the other way around. Heat pump installers usually assume that "power is available", and deficiencies emerge on the day of installation: lack of a third phase, a full distribution board, insufficient connection. Then the cost increases at the worst possible moment. An electrical audit before signing the contract reverses this order: you know what the house can handle, and you negotiate with the pump contractor with specifics in hand.
Grants — check at the source
The scale of changes is real: for example, in Świdnica alone, by the end of 2025, 287 applications were submitted in the Clean Air programme (according to the city's status report). However, the rules and calls for grant programmes change too often to trust blogs — including ours. Always verify current conditions on the official websites of the programmes (Clean Air, Warm Flat) or at the city office. Status as of publication date: 12 July 2026. We are responsible for the part that does not change: the installation must be safe, measured, and documented — also for the purposes of grant settlement.
Planning a heat pump, photovoltaics, and an electric car? Calculate the power once, for everything combined — instead of three separate approaches. We perform such an audit during one visit: book an appointment or use expert consultation.
