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Aeroterm.
Villa moderne en zone alpine — illustration des projets de pompe à chaleur d'Aeroterm

Service · Heating

Heating &heat pumps

A properly sized heat pump cuts your heating bill by two to three and removes your dependency on oil or gas. We handle the thermal audit, the technology choice, the installation and the cantonal subsidy paperwork.

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  • On-site thermal audit
  • Sizing with a seasonal COP guarantee
  • Cantonal subsidies handled
  • Commissioning & follow-up

Solutions

Several technologies,one study per building.

  • Air-water heat pump (aerothermal)

    The most common retrofit solution: no earthworks, direct connection to the existing heating loop, ideal for replacing a boiler.

    • No earthworks
    • Compatible with low-temperature radiators
    • Annual COP 3.5 to 4.5

  • Ground-source (vertical boreholes)

    Energy is captured through vertical geothermal probes — the most stable year-round performance, particularly suited to well-insulated homes and major retrofits.

    • Seasonal COP 4 to 5
    • 50+ year service life on the probes
    • Passive cooling possible in summer

  • Water-source (groundwater)

    Capture on the groundwater table, exceptionally efficient. Subject to cantonal permit, particularly relevant in some Geneva zones.

    • COP up to 5.5
    • Constant performance year-round
    • Hydrogeological study beforehand

  • Hybrid heat pump

    Combines a heat pump with a backup boiler for cold peaks. Often used as a transition solution to spread the cost over time.

    • Lower upfront investment
    • Automatic switch based on outside temperature
    • Compatible with an existing gas boiler

Process

From the auditto commissioning.

  1. 01

    Visit & audit

    Thermal study of the building, check of the existing loop, heat-loss measurement.

  2. 02

    Sizing

    Choice of technology and capacity, seasonal COP simulation, line-by-line quote.

  3. 03

    Subsidies

    Applications to the canton (buildings programme), full administrative handling.

  4. 04

    Install & commission

    Installation by our team, start-up, hand-over training, warranty.

Questions

What weget asked.

A question that isn't covered here? Ask us directly.

  • What is the budget for a heat pump replacing a boiler?

    Expect CHF 35'000 to 55'000 all-in for an air-water heat pump on a villa, CHF 50'000 to 75'000 for a ground-source system. Cantonal subsidies typically cover 15 to 25 % of the investment.

  • Does a heat pump really work when it gets very cold?

    Yes. Modern units keep a COP above 2 down to −15 °C. For the rare colder days, a small backup resistor takes over without any user intervention.

  • Will my current radiators be compatible?

    In most cases yes — provided the radiators are correctly sized. We verify this during the thermal audit and size the heat pump accordingly.

  • How long does the installation take?

    An air-water installation takes 2 to 4 days in an occupied villa with no heating interruption. A ground-source system requires 3 to 5 additional days for the boreholes.

  • Is the outdoor noise an issue for neighbours?

    The units we install (Daikin, Mitsubishi, Stiebel Eltron) run at 35-45 dB(A) at 3 m. We systematically handle placement and vibration so cantonal limits are easily met.

  • What is the lifetime of a heat pump?

    Compressor 15 to 20 years, hydraulics 25+ years, geothermal probes 50+ years. Annual preventive maintenance is essential to reach the upper end.

Also at Aeroterm

Our other services.

Next step

Free studyand quote within 7 days.

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