Cost of our air source heat pump install

You can get a heat pump installed for around £500 from Octopus, if you have a straightforward job. Our was deemed to be more complicated, and it cost us £1,940 after the £7,500 government boiler upgrade scheme (BUS). 

That covered all the main steps: surveys and re-surveys, handling the planning permission, decoding the structural engineer report, replacing five radiators, removing the old system, carrying out an asbestos survey, applying for the BUS, and of course supplying and fitting the heat pump, cylinder and other tech.

We were allocated five engineers for five days, plus some other gas engineers, and the job went to plan, finishing early afternoon on the Friday. I count it as being slightly over 22 person days of effort in the week.

There were pre-install requirements we had to deal with and pay for: 

1. Clearing space in the loft, around the garden, and around the radiators (cost: sweat, some swears, trips to the tip).
2. Drilling a hole to create a drainage channel for the pump: we found a builder to do that.
3. Finding a structural engineer to assess the cylinder location, instructing them, and paying them.
4. Upgrading our loft insulation. I’ve not included that in the cost here, because that’s just a good thing to do regardless.

The total then is £3,728.

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Here’s our referral link for Octopus which gives you £100, and us £100 in energy credits. If you’re not using Octopus, I’m told Heat Geek are very good.