Greater London · Heat pump installation
Heat pump installers in Isleworth
Our engineers work in Isleworth on air source heat pumps. Diagnosis first, a fixed price and proper paperwork when we finish.
- Moving away from fossil-fuel heating
- Deciding which kind of heat pump suits the home
- Working out whether radiators need upsizing
About our air source heat pumps in Isleworth
Every installation starts with a heat loss survey. It shows how much heat each room needs on a cold day so the system is sized to match. Sizing by rule of thumb is not good enough. If you are dealing with an oil, LPG or gas boiler near the end of its life and replacing a combi boiler with a heat pump, we can sort it out.
In a flat in Isleworth, the lease and the freeholder usually decide where a heat pump can go. Permitted development limits are different for flats, so we check the position before we design.
The records are your system’s health record: what was fitted or found, what was done and when. It makes the next visit quicker and any warranty question simpler and it’s worth keeping safe.
- Location
- Isleworth (TW7, TW1, TW3)
- Region
- Greater London
- Price guide
- £8,000–£16,000 (0% VAT on homes), before the grant
- Quotes
- Fixed, in writing
- Response
- Answered the same working day
- Credentials
- F-Gas certified company, NICEIC approved, MCS
- Call
- 07833 053749
- Reviewed
- 30 October 2026
Landlords, agents and facilities managers
The F-gas rules share responsibility for leak checking between the equipment’s operator and the service technicians. Where a building is let or managed, the lease or contract should make clear who looks after the system and we’re happy to deal with whoever it is.
Portfolio owners often want one contractor and one number. Our area covers Greater London and the South East, so a run of properties can go into one programme and kept to a regular schedule.
System by system
Heat loss surveys
The survey covers the building fabric and how air moves through it along with the room sizes.
Hot water cylinders
An air-to-water heat pump heats hot water through a cylinder. Space for the cylinder is part of the survey particularly in homes with a combi boiler.
Air source heat pumps in Isleworth: the local picture
About 51% of households live in flats, according to the 2021 Census. For flats, the first questions are where an outdoor unit could go, whether a cylinder fits and what the lease allows. In London, outside space and the rules for flats often decide which kind of heat pump suits.
If your home is near Isleworth station and heated by a gas boiler, an air-to-water heat pump can replace it where the survey shows it suits. Syon House lies about 0.9 miles north-east. Owners of listed homes need consent before a heat pump is fitted, so it’s one of our first questions.
Isleworth is about 2 miles north of Twickenham, in Greater London. Wherever you are in the TW7 postcode area, we can help with air source heat pumps. In Greater London alone we list 764 places and Isleworth is among them. London, roughly 10 miles off, has its own page on this site.
Our nearest recent job to Isleworth was on Richmond Hill, Richmond (TW10), about 2 miles south-east: installing a Mitsubishi Electric Zubadan multi-split system serving four bedrooms, the study and the living room: six indoor units in total.
Postcode districts we cover here: TW7, TW1 and TW3. Local streets include Upper Square, London Road and Shire Horse Way, and we cover them all. Places around Isleworth that are also on our list: Woodlands (1 mile west), St Margarets (1 mile south-east), Ivybridge (1 mile south-west), Spring Grove (1 mile north-west) and Hounslow (1 mile west). Further out, we also cover London (10 miles east), City of Westminster (8 miles east), Marylebone (9 miles north-east) and Kensington (6 miles east).
Local landmarks in Isleworth
In Isleworth, that means homes and buildings near The George Inn, Kneller Hall Junior School and Gumley House RC Convent School, among other places. Isleworth has its own railway station: Isleworth station. Well-known places in the area include West Middlesex University Hospital (under half a mile north-east) and Museum of Army Music (1.4 miles south-west). Green spaces nearby include Richmond Hill and Kew Gardens Lake.
Towns and villages near Isleworth
Also in Isleworth
Questions from Isleworth
Is the heat pump grant available in Isleworth?
Yes, if the home and the heat pump meet the scheme’s rules: Isleworth is in England, where it applies. Whether your home qualifies, and for how much, depends on the type of heat pump and the heating it replaces. As an MCS certified installer, we apply for it on your behalf.
Can I have air conditioning in a flat in Isleworth?
Often, yes, but the lease and the freeholder typically have a say. Permitted development rules for flats are tighter than for houses, so we check the outdoor unit position and give you the details to send to the freeholder or managing agent.
Do you work on systems someone else installed?
Yes. We work on systems fitted by other installers as well as our own, on all the main brands. Send us the make and model, and any records you have.
Can you come out in an emergency?
Yes, any time. If something urgent happens, like water coming from a unit or a critical room overheating, call our 24/7 line and we will tell you what to do first.
Who is responsible for leak checks?
Whoever operates the equipment, together with the technicians who service it. Systems below 5 tCO2e fall outside the set leak check intervals, while larger ones need checks at least every 12 months, or every 6 months from 50 tCO2e. We can tell you which band your system falls into.
Will my radiators work with a heat pump?
Some radiators may be fine as they are, and some may need to be larger. Heat pumps run at lower flow temperatures, so radiators give out less heat, and the survey checks each one.
What’s the difference between air-to-water and air-to-air heat pumps?
It depends on your home, your heating and whether you want cooling. Air-to-water can attract a £7,500 grant where eligible; air-to-air only qualifies for £2,500 under strict conditions, and we set out the options after the survey.
What happens on the day
Protection comes first: sheets over the floor and any furniture nearby and nothing is moved without asking you. Then the electrics are made safe and the work begins. It takes a few days for most air-to-water installations, with air-to-air systems often quicker, and we clear up before we go. Managed buildings in London often need contractors booked in, and we can deal with the agent for a job in Isleworth.
- First, a chat about the property and your goals for the heating.
- A survey covers heat loss, radiators, hot water and where the outdoor unit could sit.
- We recommend air-to-water or air-to-air and check the grant position.
- We install the heat pump and connect it up.
- We commission it, complete the MCS certificate and show you how to use it.
Before we arrive
- Clear the space around the indoor unit, or where it will go
- Tell us about any building rules, permits or sign-in
- Make sure we can reach the consumer unit or fuse board
Ask for a quote
For air source heat pumps in Isleworth, phone 07833 053749 or fill in the contact form. Let us know the type of property and what you need, plus some photos if they’re to hand. Enquiries get a reply the same working day.
Read more
Why act early in Isleworth
Permitted development rules can change, and conditions vary between properties. We look at the planning position early, so there are no surprises, including conservation areas, listed buildings and Article 4 directions. Getting the work done in Isleworth before summer avoids the busiest weeks.
Leaving a fault or an overdue service rarely makes the work cheaper. Faults and wear in a system tend to grow, and a struggling system uses more electricity to do less. If you are unsure, call 07833 053749 or send an email for straight advice and a fixed price.
Why book with us
- F-Gas company certification
- Manufacturer’s warranty terms explained on your quote
- One contact for properties across the South East and London
- Fixed-price quotes after a survey or photos
Take a look at what air conditioning costs and how to check a contractor.
What a customer said
“Excellent service from start to finish. Two wall-mounted units installed in our home. Clean, tidy work: they protected all the floors and left no mess. The systems work brilliantly. Would highly recommend.”
Sarah M., East Grinstead