Heat pump in a modular house – which to choose and how much will you save?
Treevia houses come with underfloor heating distribution and recuperation. The heat source is chosen by the client. But "heat pump" is a broad term – there are several types on the market, differing in price, efficiency and installation requirements.
Air-to-water heat pump (most popular)
- COP: 3.5–5.0
- Cost: PLN 25,000–45,000
- Works with underfloor heating
- Best choice for most modular houses
Ground-source heat pump
- COP: 4.0–5.5 (most stable)
- Cost: PLN 40,000–80,000 (including drilling/collectors)
- Requires ground works
- Best efficiency, but highest investment
Air-to-air heat pump
- COP: 3.0–4.5
- Cost: PLN 8,000–15,000
- Heats air directly, without water installation
- Good supplement, but not as sole heat source in Polish climate
Why heat pump + modular house is a perfect match
A Treevia modular house has low heat demand thanks to:
- Multi-layer wall insulation (U < 0.15 W/m²K)
- Airtight construction (Blower Door test: n50 < 1.5)
- Recuperation recovering 85–95% of heat
- Low U-value windows (0.7–0.9 W/m²K)
How much will you save? Heating cost comparison
For a 120 m² house (BARN 120):
Gas boiler + radiators (traditional):
- Gas consumption: 1,500–2,000 m³/year
- Cost: PLN 7,000–11,000/year
Heat pump + underfloor heating (Treevia):
- Electricity: 3,000–4,500 kWh/year
- Cost: PLN 2,000–3,000/year
Savings: PLN 5,000–8,000 per year
Summary
Treevia prepares your home for efficient heating: underfloor heating distribution, recuperation, and U=0.15 insulation ensure low energy demand regardless of the chosen heat source.