Hertfordshire · Heat pump installation
Air Source Heat Pumps in Sarratt
Expert air source heat pumps for Sarratt: a survey or diagnosis, a fixed price, careful work and proper paperwork. Call for a fixed-price quote.
- Deciding which kind of heat pump suits the home
- Checking whether planning permission is needed
- An oil, LPG or gas boiler near the end of its life
Air source heat pumps in Sarratt
For an air-to-water heat pump, the price is £8,000–£16,000 (0% VAT on homes), before the grant. The Boiler Upgrade Scheme can provide £7,500 towards an eligible air-to-water system in England and Wales, and as the installer we apply for it on your behalf. Eligibility depends on the property, so we confirm it before anything is agreed. Typical jobs include finding a place for the outdoor unit and questions about the Boiler Upgrade Scheme, on air-to-air heat pumps, radiator systems and homes heated by oil, LPG or gas.
Older and listed homes in villages like Sarratt need extra care, and permitted development does not cover listed buildings, so we check consent first.
Some warranty terms depend on the system being serviced regularly by a qualified engineer. Where yours does, a regular service with us keeps that side in order and each visit is recorded.
- Location
- Sarratt (WD3)
- Wider area
- Hertfordshire
- Certified
- NICEIC approved, F-Gas certified, MCS
- Quotes
- Fixed-price quote after a site survey
- Prices
- Air-to-water £8,000–£16,000 before any grant (0% VAT for homes)
- Response
- On the working day you ask
- Phone
- 07833 053749
- Last updated
- 30 October 2026
How the visit works
Every visit follows the same order: agree the plan on site, put the dust sheets down, do the work, test what we have done and talk you through it. The visit itself takes several days for an air-to-water system with a new cylinder, less for an air-to-air system. A few photos help us make the most of a visit to Sarratt.
- It starts with a conversation about the home, the existing heating and your plans.
- A heat loss survey works out how much heat each room needs, and we look at the radiators, the cylinder space and where the outdoor unit could go.
- The price comes back fixed and in writing, with the grant and VAT shown line by line.
- We fit the outdoor unit and connect it to the heating, hot water and controls.
- Once it’s running correctly, the MCS certificate is issued and we show you the settings.
Before we arrive
- Mention any managing agent or landlord rules we need to follow
- Clear the space around the indoor unit, or where it will go
- Plan for pets to be kept clear during the visit
How to get a quote
Want a quote for air source heat pumps? Please phone us on 07833 053749 or use the quote form with a few details about the property. We’ll explain what we’d recommend and why, then send a fixed-price quote before anything is booked.
Related advice
Do you need air source heat pumps in Sarratt?
Extensions, renovations and loft conversions are a natural time to rethink the heating. It’s simpler to plan radiators, pipework and a cylinder while the builders are in.
The things we’re asked about most include:
- Moving away from fossil-fuel heating
- Not knowing whether a grant applies
- Questions about where the outdoor unit can go
Period properties close to Church of the Holy Cross can suit a heat pump, though insulation and any heritage protection are checked first.
What to look for in a quote
- What happens if the job turns out to be different on the day
- Whether they hold F-Gas company certification, not just individual qualifications
- The make and model of any parts or equipment being quoted
Sarratt questions
Do you cover smaller places like Sarratt?
Yes. Sarratt is within the area we cover across London and the South East. Visits to smaller places are planned so the engineer arrives with what the job needs.
Is a heat pump in Sarratt permitted development?
It depends on the property. Central Sarratt sits inside the Sarratt, The Green Conservation Area. On a house, an air source heat pump can often go ahead under permitted development, with an outdoor unit of no more than 1.5 cubic metres and an installation that meets MCS 020(a), which includes a noise check. Those rights don’t reach the grounds of a listed building, and conservation areas rule out walls or roofs facing a road. If that might affect you, we ask the local planning authority (for Sarratt, typically Three Rivers council).
Is there a Boiler Upgrade Scheme grant for air-to-air?
There is a £2,500 grant for air-to-air, but only under strict conditions. It has to replace the fossil-fuel heating, meet the full heating demand, be fitted by an MCS certified installer, and be in a home.
Do you survey before quoting?
Yes. Every job is looked at first, either on a site survey or from pictures and details for simple jobs. Then you get a fixed-price quote.
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.
Do you work on all makes?
We work with the leading brands, from Mitsubishi Electric, Daikin and Fujitsu to Panasonic, Toshiba, LG, Samsung, Mitsubishi Heavy Industries and Hitachi. Tell us the make and model and we’ll take it from there.
Do I need to service the system to keep the warranty?
For some brands, yes. Read the manufacturer’s terms, or send us the make and model and we’ll explain them and stick to the interval they set.
Air source heat pumps in Sarratt: the local picture
The last census (2021) found about 64% of households in detached or semi-detached houses. Detached and semi-detached houses normally have room for the outdoor unit and a cylinder.
With Chenies Manor House about 1.8 miles west, it’s worth asking whether your own home is listed before planning a heat pump.
Sarratt is about 3 miles north of Rickmansworth, in Hertfordshire. Our engineers cover Sarratt for air source heat pumps, along with the rest of Hertfordshire. Sarratt is one of 381 towns, villages and districts in Hertfordshire where we work for homes and businesses. The nearest of our city pages is London, around 21 miles from Sarratt.
From Alexandra Road, Downer Drive and The Briars to the smaller roads in between, the whole area is covered. All of WD3 is covered. We also cover the places around Sarratt: Micklefield Green (1 mile south-east), Bucks Hill (1 mile north-east), Chandler's Cross (2 miles south-east), Loudwater (2 miles south) and Chorleywood West (2 miles south). Further out, we also cover Watford (4 miles east), Hemel Hempstead (5 miles north), St Albans (8 miles north-east) and Welwyn Garden City (15 miles north-east).
Around Sarratt
We fit and service air conditioning in homes and premises around The Boot Public House and St Clement Danes School and the streets around them. Sarratt’s nearest station is Chorleywood station, roughly 2.3 miles south-west. Well-known places in the area include Chiltern Open Air Museum (3.8 miles south-west) and Leavesden Hospital (4 miles east). Green spaces nearby include Sarratt Bottom nature reserve and Tumbling Bay.
Nearby places to Sarratt
Also in Sarratt
What air conditioning will not do
An honest diagnosis matters more to us than a booking, so here’s what this work cannot put right:
- Formal advice on VAT for your situation
- Draught-proofing and insulation upgrades
- Getting planning permission or listed building consent on your behalf
If in doubt, ring 07833 053749 or drop us a line and we’ll say what we think before you book.
Parts of the system we cover
- Radiator systems
- Hot water cylinders
- Underfloor heating
- Homes heated by oil, LPG or gas
- Air-to-water heat pumps
- Air-to-air heat pumps
Fixed-price quotes for air source heat pumps in Sarratt
Some jobs are bigger than they look, and some smaller. What affects the quote:
- How far the pipework has to run, and where
- Whether it’s a simple split or a larger system
- Whether it’s a one-off job or part of a maintenance contract
The cost depends on the type of system and how many units are involved, how easy the units are to reach and what the work involves. You get a fixed price before any work starts, so there are no surprises.
Asking for a quote
What to send for a quote:
- Any error code or flashing light on the display
- A photo of the consumer unit with the cover closed
- A few photos of the room and the wall the unit is on, or will go on
Every quote shows the VAT clearly, with the rate that applies to your job. VAT can differ between homes and businesses and between kinds of work, so we confirm it on the quote. To get one, call us on 07833 053749.
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