Detached property, hosted by David

Mitsubishi air source heat pump in a 1983 - 2002 property

David

It all started with buying a fully electric car followed by solar PV and a domestic storage battery. My wife and I are very keen to reduce our carbon footprint and stop burning stuff. There is a lot to understand which is not helped by some sections of the general media repeating misleading information about renewable energy. I believe that there is no substitute for speaking directly to owners who have already tried out renewable technology. We are very happy to share our knowledge and experience.

Joined the network in 2025

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About this property

HEATHFIELD, TN21

4 bedrooms

Air source heat pump

Installed by Ohm Energy Ltd

EPC rating: B

Cost of energy bills per year: £1,000

Installing the system

The install took about 10 working days as we needed a new water cylinder and 10 larger radiators. Our home was already well insulated and has UPVC double glazing. It is quite disruptive but was made easier with the polite and thoughtful installers from Ohm who kept to schedule. We already had a 6 kWp solar PV system and a Tesla Powerwall 2.

Components installed:
- 1 x Mitsubishi Ecodan Ultra Quiet W850 (8.5kW) Air Source Heat Pump
- 1 x FTC6 System controller
- 210 litre pre plumbed pressurised hot water cylinder (high efficiency)
- Grade A Flow circulating pumps
- Central heating filtration unit
- Anti-vibration feet
- Nest Digital Learning Thermostat
- Electricity Meter
- Magnetic lime scale reducer
- Inhibitor solution
- All associated pipe work and fittings
Included:
- Installation of all the above components
- Signing the system off to MCS standards to enable you to benefit from the BUS
(worth £5000) which OHM energy claim on your behalf
- 5-year Mitsubishi Warranty included (2 year extension to 7 years at £300)
- 2-year warranty on all works carried out by Ohm Energy Ltd

Living with a heat pump

We have lived with the new system for three winters now and it has worked very well and been most worthwhile. Our gas meter was removed and we estimate our annual total energy cost at £1,000. This includes heating, hot water, cooking, lighting and running two battery electric vehicles.

Our ASHP set cost £15k in total before deduction of the grant. Ohm were very good indeed and the whole system is working very well. The Nest heating system is controlled by the Nest app but there is no app to control the heat pump itself. There are plenty of geeky adjustments that can be made to the ASHP settings to maximise efficiency but probably too complicated for the average consumer to fiddle with. It can take a couple of months to optimise everything but once done, the entire system is best left alone.

We can recommend this podcast to help you learn more about air source heat pumps: The Happy Heat Pump Podcast.

Hosted by David

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Street parking outside of house is no problem. https://w3w.co/permanent.walled.mason