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Varcoe Air Conditioning and Heat Pumps Auckland · Published for Auckland homeowners

Sizing a heat pump for your room

A heat pump that is too small runs flat out and never warms the room; one too big short-cycles and wastes power. As a rough guide, a 3.5kW unit suits a bedroom or small living space, while an open-plan lounge in a typical Papakura home usually needs 6kW to 8kW. Room size, ceiling height, insulation, and window area all shift the number, so measure before you buy.

Ducted vs high-wall vs multi-split

High-wall units are the common choice: one indoor head, one outdoor unit, warm one room well. A multi-split runs several indoor heads off a single outdoor unit, handy when you want heating in three or four rooms without four separate compressors. Ducted systems hide in the ceiling and heat the whole house evenly, but cost more and need the space to run ducting.

Which one fits most Auckland homes

For a two or three bedroom home where the lounge is the main space, a single high-wall in the living area plus a smaller unit in the master covers most needs. Bigger homes and new builds lean toward ducted or multi-split.

What a proper install includes

A good install is more than screwing a unit to the wall. It covers correct pipe runs, a vacuum-pumped and pressure-tested refrigerant line, secure mounting, tidy drainage that will not drip inside, and an electrical connection that meets code. Cutting corners on any of these shows up later as leaks, noise, or a unit that underperforms in winter.

Running cost in an Auckland winter

Heat pumps are the cheapest way to heat most Auckland rooms because they move heat rather than make it. A well-sized unit run on a timer, at a steady 20 to 21 degrees, costs far less than blasting it to 26 in short bursts. Keeping filters clean and the outdoor unit clear of leaves keeps efficiency up through the wet season.

Booking an assessment

The reliable way to get the right unit is an on-site assessment. We look at the room, insulation, and where the outdoor unit can sit, then recommend a size and model that matches how you actually use the space. Call Varcoe Air Conditioning and Heat Pumps Auckland on +6498027006 to book a visit.