Greater London · Heat pump installation
Heat pump installation in Northwood, Greater London
Air source heat pumps in Northwood from an F-Gas certified company, with the manufacturer’s warranty terms explained on your quote. Enquiries answered the same working day.
- Replacing a combi boiler with a heat pump
- Not knowing whether a grant applies
- Radiators that may be too small for a heat pump
How we handle air source heat pumps in Northwood
Every installation starts with a heat loss survey. That tells us how much heat the home needs, room by room, so the heat pump and the radiators or indoor units can be sized properly. Sizing by rule of thumb is not good enough. Typical jobs include no space for a hot water cylinder and deciding which kind of heat pump suits the home, across underfloor heating, radiator systems and air-to-water heat pumps.
In a flat in Northwood, the lease and the freeholder usually decide where a heat pump can go. The planning rules for flats are stricter than for houses, so we check the position before we design.
Nothing is signed off by word of mouth: commissioning details for an installation, a fault and repair note for a repair, or a record of the service. Keep it with the system’s paperwork, because it helps with any later warranty question.
- Location
- Northwood (HA6)
- Region
- Greater London
- Pricing
- A fixed price before any work starts
- Approvals
- F-Gas certified company, NICEIC approved, MCS
- Costs
- £8,000–£16,000 before the grant, 0% VAT on homes
- Replies
- Answered the same working day
- Phone
- 07833 053749
- Reviewed
- 30 October 2026
Air source heat pumps in Northwood: the local picture
The 2021 Census found about 66% of households in detached or semi-detached houses. Houses typically have space for an outdoor unit and a hot water cylinder. For a London home, the outdoor unit position and the MCS noise check need careful planning.
Historic houses such as Headstone Manor, about 3.3 miles south-east, are a reminder that listed homes need consent before a heat pump goes in. Live in one of the older houses around Emmanuel Church? Expect the survey to look closely at heat loss and at the building’s planning status.
Northwood is about 3 miles south-east of Rickmansworth, in Greater London. If you need air source heat pumps in Northwood, please phone 07833 053749 or write to us at info@aircondoctor.co.uk for a fixed-price quote. We work across London and the South East, including Northwood. Northwood is one of 764 towns, villages and districts in Greater London where we work. London, roughly 16 miles off, has its own page on this site.
Our nearest recent job to Northwood was on King Street, Twickenham (TW1), about 12 miles south: installing a Samsung VRF system serving the restaurant dining area, bar, private dining room and kitchen extraction area: seven indoor units in total.
Every address in HA6 is within our area, from the main roads to the quietest streets. You’ll find streets such as Little Stream Close and Sandy Lodge Way, each of them within reach. Close to Northwood, our area also takes in Eastbury (1 mile north-east), Moor Park (1 mile north-west), Batchworth Heath (1 mile west), Batchworth (2 miles north-west) and Holywell (2 miles north). Larger places within reach include City of Westminster (14 miles south-east), Marylebone (14 miles south-east), Kensington (12 miles south-east) and St Pancras (14 miles south-east).
Landmarks near Northwood
In Northwood, that means homes and buildings near King George V Playing Fields, The Gate Public House and London School of Theology, among other places. Northwood’s nearest station is Carpenders Park station, roughly 1.7 miles north-east. Other landmarks nearby include Harlequin Centre (2.9 miles north-east) and Heath Robinson Museum (2.2 miles south-east). Not far away are Dews Farm Sand Pits and Tumbling Bay.
Towns and villages near Northwood
Also in Northwood
When something else is needed
Not every problem is solved by air source heat pumps, and we’ll tell you before work begins. It will not put right:
- Formal advice on VAT for your situation
- Getting planning permission or listed building consent on your behalf
- Gas boiler work, such as disconnecting the old boiler, which needs a Gas Safe registered engineer
If you are not sure, just call 07833 053749 or fill in the contact form and we’ll give you a straight answer before you book.
Where we work
- Air-to-water heat pumps
- Radiator systems
- Homes heated by oil, LPG or gas
- Underfloor heating
- Hot water cylinders
- Air-to-air heat pumps
What we do, step by step
Where something has to be switched off during the work, we agree it with you first so it doesn’t catch you out. For businesses, we can normally work room by room or zone by zone. On site, it takes anything from a couple of days for air-to-air to the best part of a week for air-to-water with radiator changes. Before a visit in Northwood, we ask where the van can stop and how we reach the outdoor unit.
- First we find out about the property, the heating you have now and what you are hoping for.
- The survey measures heat loss room by room and looks at radiators, hot water and the best spot for the outdoor unit.
- A fixed-price quote follows, setting out the system, any grant that applies and the VAT.
- Fitting day: the outdoor unit is placed, the indoor side connected and the controls set up.
- The system is commissioned and registered under MCS, and we show you how to use it.
Preparing for the visit
- Let us know where the consumer unit is
- Move furniture away from the wall where we’ll be working
- Keep pets out of the rooms we’re working in
Ask for a quote
If you need air source heat pumps in Northwood, ring us on 07833 053749 or email us. Let us know the type of property and what you need, and send a few pictures if you can. Enquiries get a reply the same working day.
Read more
What happens if it’s left?
Radiators that are too small for a heat pump’s lower flow temperature leave rooms cool. Checking and upsizing them as part of the installation avoids that. Consents in London blocks can take time, which is another reason to plan the job in Northwood early.
Putting several jobs into one visit often makes better use of the time. Tell us about everything you’d like looked at and we will price it together.
What you get with us
- Warranty terms set out brand by brand
- NICEIC approved for electrical work
- Fixed-price quotes after a survey or pictures
- Diagnosis first, then a fixed price
See what air conditioning costs or our accreditations and certificates.
System by system
Outdoor unit position and planning
Under permitted development, the outdoor unit must be 1.5 m³ or less and must meet MCS 020(a) and not be used solely for cooling. It can’t be within the curtilage of a listed building.
VAT on heat pumps
Heat pumps in homes carry 0% VAT until 31 March 2027, and 5% after that, under HMRC Notice 708/6. Businesses pay the standard rate.
Your questions about air source heat pumps in Northwood
Can I fit a heat pump in Northwood without planning permission?
There’s no single answer: the building and the outdoor unit position decide it. There’s a conservation area, the Frithwood, Northwood Conservation Area, close to central Northwood. The permitted development rules for heat pumps leave out listed buildings and stop outdoor units going on road-facing walls or roofs in conservation areas. Anything outside the rules needs an application, and we raise it with the local planning authority (for Northwood, usually Hillingdon council) first.
Can you fit air conditioning in a London flat in Northwood?
Usually, yes, though leaseholders normally need the freeholder’s agreement. 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.
What does an air-to-water heat pump cost?
Air-to-water work is in the £8,000–£16,000 range (0% VAT on homes), with any grant still to come off. Where you land depends on the size of heat pump, any radiators that need changing and the hot water cylinder. Air-to-air is priced after a survey.
Is there a survey before the work?
Yes. We always look before we price, either on a site survey or from photos and details for simple jobs. A fixed-price quote follows.
Does the grant cover air-to-air heat pumps?
The scheme offers £2,500 for air-to-air, but the conditions are strict. Adding air-to-air alongside a boiler doesn’t qualify, and it must cover the whole heating demand.
Can I do any of the installation myself?
Anything that involves the refrigerant needs an F-Gas qualified engineer from a certified company. That’s the law, not just our preference, and it also matters for the manufacturer’s warranty. We can quote for the whole job, from supply to commissioning.
What VAT do I pay on a heat pump?
Installing an air source heat pump in a home is zero-rated until 31 March 2027, then 5%. Businesses pay the standard rate, and this is general information rather than tax advice.
A customer’s words
“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