The smaller aroTHERM plus on its feet against the house wall.

A heat pump sized to the house,
not rounded up, in Chingford

A renovation in Chingford E4 where the survey showed a smaller Vaillant heat pump would do the job properly. So a smaller one is what went in.

Price my heat pump
  • Our own job, photographed on the day
  • Free survey and a fixed written price
  • MCS certified, NICEIC approved electrics

Accredited, and fitting the brands you know

NICEIC approved contractorGas Safe RegisterMCS certifiedRECC, Renewable Energy Consumer CodeTrustMark, Government Endorsed QualityVaillantClivetSamsungDaikinMitsubishi ElectricBosch

We replaced an old gas boiler in Chingford E4 with a smaller-capacity Vaillant aroTHERM plus air source heat pump, sized to the home's actual heating and hot water demand, during a wider renovation. Three days on site, with the £7,500 grant taken off.

Rounding a heat pump up to be safe is a common mistake. An oversized unit costs more to buy and runs less efficiently.

How the job was done

Step by step, in the photographs taken on site.

  1. The smaller aroTHERM plus on its feet against the house wall.
    1

    Smaller, on purpose

    The heat loss survey showed the house did not need a larger unit, so a smaller one was fitted. It runs in longer, steadier cycles, which is quieter and more efficient than a big unit starting and stopping.

  2. Inside: the cylinder with the controller and the valves in one cupboard.
    2

    Against the house wall

    The unit stands on blocks against the house wall, clear of the ground, with a short pipe run inside.

Every photograph from the job

3 photographs, no faces, nothing staged.

The smaller aroTHERM plus on its feet against the house wall.
The smaller aroTHERM plus on its feet against the house wall.
Inside: the cylinder with the controller and the valves in one cupboard.
Inside: the cylinder with the controller and the valves in one cupboard.
The unit on its blocks, clear of the ground, with the pipe run going into the wall.
The unit on its blocks, clear of the ground, with the pipe run going into the wall.

Thinking about a heat pump?

What this job involved, applied to your own house.

Air source heat pumps

Whole-house heating with the £7,500 grant

Air source heat pumps

What a heat pump costs

Ten real quotations, before and after the grant

What a heat pump costs

Heat pump or air conditioning?

Which one a house actually needs

Heat pump or air conditioning?

Air-to-air heat pumps

Heats and cools, room by room

Air-to-air heat pumps

Chingford E4: questions about this job

Is a bigger heat pump better?

No. A heat pump sized well above what the house needs switches on and off more often, which lowers its efficiency and wears it faster. The right size comes from the heat loss calculation.

Do you work in Waltham Forest?

Yes. Our work in Waltham Forest.

More of our finished work

Other jobs we have photographed. Tap one for the project.

All 34 projects
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Book a free heat pump survey

We measure every room, calculate the heat loss, check the radiators and the space for a cylinder, and send a written price with the grant already taken off. No cost and no obligation.

Call 020 3393 1331

Monday to Friday 9am to 7pm, Saturday 10am to 3pm, Sunday closed

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