Hertfordshire · Heat pump installation
Leavesden air source heat pumps
Air source heat pumps for Leavesden and the surrounding area: diagnosis first, then a fixed-price quote, the work and written records. Ask us for a fixed-price quote.
- Questions about the Boiler Upgrade Scheme
- Comparing heat pump types
- A boiler that’s getting old
Air source heat pumps for homes and businesses in Leavesden
An air-to-water heat pump costs £8,000–£16,000 (0% VAT on homes), before the grant. In England and Wales, the Boiler Upgrade Scheme offers a £7,500 grant towards an eligible air-to-water installation and the installer makes the application. Eligibility depends on the property, so we confirm it before anything is agreed. The work covers hot water cylinders, underfloor heating and air-to-air heat pumps, and people most often call us about replacing a combi boiler with a heat pump and deciding which kind of heat pump suits the home.
If your home near Leavesden has no mains gas, the grant can be bigger. Homes heated by oil or LPG with no mains gas can get an extra £1,500 on the Boiler Upgrade Scheme until March 2027, for an air source or ground source heat pump.
Each manufacturer sets its own warranty period. Daikin, for example, gives a standard 2 years on split air conditioning, with longer extensions only on its air-to-water heat pumps. For any other brand, we explain the manufacturer’s terms on your quote.
- Location
- Leavesden (WD25, WD5)
- Region
- Hertfordshire
- Pricing
- Fixed, in writing
- Costs
- £8,000–£16,000 (0% VAT on homes), before the grant
- Approvals
- F-Gas certified, NICEIC approved, MCS
- Response
- On the working day you ask
- Call
- 07833 053749
- Checked
- 30 October 2026
How the visit works
The first job on site is protection: sheets over the floor and any furniture nearby, and we ask before moving anything. After that, anything electrical is made safe and we start. The work on site takes a few days for most air-to-water installations, with air-to-air systems often quicker, and we tidy up before we leave. We load the van from the survey notes so the work in Leavesden can be done in one go where possible.
- First we find out about the property, the heating you have now and what you’re hoping for.
- On the visit we calculate what every room loses on a cold day, then check the radiators, room for a cylinder and outdoor unit options.
- We send a fixed-price quote that shows the equipment, the grant position and the VAT.
- Fitting day: the outdoor unit is placed, the indoor side connected and the controls set up.
- Once it’s running correctly, the MCS certificate is issued and we show you the settings.
Getting ready for the visit
- Tell us about access, such as roof hatches, high walls or locked plant areas
- Make sure someone can let us in at the agreed time
- Have the make and model of any existing unit to hand
How to get a quote
Every quote shows the VAT clearly, and the rate that applies to your job is stated. VAT can differ between homes and businesses and between kinds of work, so we confirm it in writing rather than guess. To get one, ring us on 07833 053749 or send an email.
Advice
Other services in Leavesden
Air source heat pumps in Leavesden: the local picture
About 19 miles out from central London, Leavesden is part of the South East area we work across.
Live in one of the older houses around Church of All Saints? Expect the survey to look closely at heat loss and at the building’s planning status. With High Elms Manor about 0.4 miles north-east, it’s worth asking whether your own home is listed before planning a heat pump.
Leavesden is about 2 miles north of Watford, in Hertfordshire. Whatever kind of property you have in Leavesden, our engineers can help with air source heat pumps. You’ll hear back from us the same working day, and there’s a 24/7 emergency line. Across Hertfordshire, we cover 381 places, Leavesden among them. London, roughly 19 miles off, has its own page on this site.
We cover every part of WD25 and WD5 for air source heat pumps and the streets around it. The A405 serve Leavesden, which keeps journeys to surveys and visits simple. Nearby, we also cover air source heat pumps in Garston (1 mile south-east), Meriden (1 mile south-east), North Watford (2 miles south), Watford (2 miles south) and Aldenham (2 miles south-east). Within a short drive, we also cover Hemel Hempstead (5 miles north-west), St Albans (5 miles north-east), Welwyn Garden City (11 miles north-east) and Harpenden (9 miles north).
Landmarks near Leavesden
Around Leavesden, our work takes us to homes and businesses near Woodside Playing Fields and Francis Combe Academy, among other places. Leavesden’s nearest station is Garston station, about 1 mile south-east of the centre. Well-known places in the area include Hertfordshire Fire Brigade Museum (3.1 miles south) and Hilfield Castle (4.1 miles south-east). For a walk, there’s Longspring Wood and Verulamium Lake.
What owners can safely do
Refrigerant is off limits for anyone without the right qualifications. Under the F-gas rules, engineers need their own qualifications and the company must be certified, and refrigerant lines can cause cold burns. A suspected leak is our job, not yours.
Leave the units and pipework where they are. Disconnecting a system means dealing with refrigerant, which only a qualified engineer can do, and the electrics need care too. If you need something moved, we can quote for it.
Looking after your system
To keep the system working properly:
- Don’t block radiators or indoor units with furniture
- Keep to regular servicing
- Know the servicing conditions in your warranty
After commissioning, the installation is registered under MCS and you receive the certificate. Keep it with the manufacturer’s paperwork, as you may need it later.
Have the system serviced regularly. Check the manufacturer’s terms, as they may include servicing conditions.
What the work involves, system by system
Outdoor unit position and planning
Permitted development conditions in England include an outdoor unit of no more than 1.5 m³ and must meet MCS 020(a) and not be used solely for cooling. Listed building curtilages are excluded.
Hot water cylinders
An older cylinder may not suit a heat pump and we tell you if it needs replacing.
Common questions in Leavesden
Is planning permission needed for a heat pump in Leavesden?
It comes down to the building and the spot chosen for the outdoor unit. The half-mile around the middle of Leavesden holds about 3 listed buildings and structures. Heat pumps on houses are often permitted development, but listed buildings need consent and conservation areas restrict outdoor units facing a road. Where it’s needed, we check with Three Rivers council, which is typically the planning authority for Leavesden.
Is the heat pump grant available in Leavesden?
Yes, if the home and the heat pump meet the scheme’s rules: Leavesden is in England, where it applies. For an air-to-water heat pump the amount is £7,500; an air-to-air system can get £2,500 if it replaces the fossil-fuel heating outright, meets the home’s full heating demand and isn’t an add-on to a boiler. As an MCS certified installer, we apply for it on your behalf.
Do I get paperwork after the visit?
Yes. You get a written record of every visit, including F-Gas records for any refrigerant work. File them with the system’s paperwork.
Do you have a 24/7 line?
Yes. Our emergency line runs 24/7 for breakdowns that can’t wait. Ring 07833 053749 any time and explain the problem.
What does F-Gas certified mean?
Companies working on equipment that contains F gas must be certified by an approved body, and the engineers need their own qualifications. It’s how you know the refrigerant is being handled legally and safely.
Is there a survey before the work?
Yes. Every job is looked at first, on a survey, or from your pictures and details where the job is simple. A fixed-price quote follows.
Can landlords and managing agents book you?
Yes. From one rented home to commercial buildings, we work the same way: survey or diagnosis, a fixed price and proper paperwork.
A customer’s words
“Very professional from the initial survey through to installation. The engineer explained everything clearly and the quote was exactly what we paid. Would not hesitate to recommend AirCon Doctor.”
David W., Haywards Heath