Air Source Heat Pump Sizing & Cost Calculator

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    What type of house do you live in?

    How many bedrooms does your home have?

    What is your homes current EPC rating?

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    6kW Aurora II

    10kW Aurora II

    14kW Aurora II

    14kW + 6kW Aurora II

    14kW + 10kW Aurora II

    14kW + 14kW Aurora II

    120L Fjord Cylinder

    200L Fjord Cylinder

    300L Fjord Cylinder

    Standard Installation

    £0

    Our standard installation package criteria are as follows;

    • Aurora II floor mounted <5m away from existing boiler flue. External pipework in trunking.
    • Fjord Cylinder location in existing cylinder cupboard with hot & cold feeds and pressure release drainage already present.
    • 160mm cylinder ventilation already present.
    • All electrical works included.
    • No radiator or emitter upgrades.
    • Grant Approval.
    • Adlår’s team undertake the home energy assessment and heat loss report.

    Any additional works are subject site survey and heat loss results. Conditions Apply

    Air Source Heat Pump Cost FAQs

    The average cost of an air source heat pump in the UK ranges from £10,000 to £14,000, including installation. However, with Adlår’s direct-to-consumer model and the £7,500 BUS grant, your total cost could be significantly lower.

    Our calculator provides a personalised estimate based on your property size, insulation, and heating demand. While it’s a strong starting point, a free home survey is the best way to confirm final pricing and savings potential.

    A sizing calculator estimates the heating output (in kW) your home requires. This helps ensure the system is neither too large (wasting energy) nor too small (underperforming). Our calculator includes sizing analysis to ensure your Adlår system is just right.

    Running costs depend on:

      • Electricity prices
      • System efficiency
    • Your heating habits

    On average, an Adlår heat pump could cost £500–£900 per year to run, compared to £1,500+ for oil or electric systems — a potential saving of £1,000+ per year.

    The BUS grant provides £7,500 off the installation cost of an air source heat pump for eligible homes. Adlår handles the entire application on your behalf — reducing hassle and speeding up approval.

    Not at all. Heat pumps require less maintenance than boilers, usually just one annual service. Adlår offers affordable maintenance plans and priority servicing from our in-house team.

    Not always. Many homes can install a heat pump without major upgrades. During your consultation, we assess your home's insulation and radiators to determine what’s needed, if anything, to ensure peak performance and short ROI.

    Absolutely. Our air source heat pump cost calculator is designed for homeowners at any stage. Whether you're comparing systems, checking eligibility, or just exploring options — it's a great way to understand your potential costs and savings.

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    Want a Fully Funded Heat Pump?

    Want a Fully Funded Heat Pump?