Hertfordshire · Heat pump installation
Radlett air source heat pumps
For heat pump installation in Radlett, choose an F-Gas certified, NICEIC approved company. A fixed price before we start, and a 24/7 emergency line.
- Questions about the Boiler Upgrade Scheme
- Radiators that may be too small for a heat pump
- Checking whether planning permission is needed
How we handle air source heat pumps in Radlett
An air-to-water heat pump heats water to a lower temperature than a typical boiler, so radiators may need to be larger to give out the same heat. We check each radiator against the room’s heat loss and anything that needs changing is in the quote. Common call-outs are for no space for a hot water cylinder and working out whether radiators need upsizing, on homes heated by oil, LPG or gas, underfloor heating and air-to-water heat pumps.
Cottages and older homes near Radlett can lose heat faster, which a heat loss calculation will show. Sometimes insulation first is the better investment.
Warranty on the equipment is the manufacturer’s own, on the manufacturer’s terms, and we set them out on your quote. Terms differ from brand to brand, and we are happy to talk you through them.
- Location
- Radlett (WD7)
- Region
- Hertfordshire
- Quote
- A fixed price before any work starts
- Credentials
- NICEIC and F-Gas, MCS
- Replies
- On the working day you ask
- Price guide
- £8,000–£16,000 (0% VAT on homes), before the grant
- Phone
- 07833 053749
- Last updated
- 30 October 2026
Your questions about air source heat pumps in Radlett
Can I get the Boiler Upgrade Scheme grant in Radlett?
Yes, the scheme covers homes in England, including Radlett, if they qualify. The amount depends on the type of heat pump, and the survey confirms which applies. You do not apply yourself: the MCS certified installer does, which is us.
Is Radlett within the area you cover?
Yes, smaller places are covered as well as towns. A few photos and the postcode are enough to get things started.
Do I need to service the system to keep the warranty?
Each manufacturer decides. If servicing is in the terms, missing one could affect a claim, so we explain the terms on your quote.
How much does an air source heat pump cost?
£8,000–£16,000 (0% VAT on homes) for air-to-water, before the grant. Your price depends on the survey, the emitters and the hot water and the quote is fixed.
Can I do the refrigerant work myself?
No, not the refrigerant side. The F-gas rules require certified companies and qualified engineers for it, and a new electrical circuit is notifiable building work unless a registered competent person does it.
Whose job is it to check the system for leaks?
Responsibility is shared between the operator, typically whoever owns or controls the equipment, and the service technicians. The interval depends on the refrigerant charge, measured in tonnes of CO2 equivalent: at least yearly for 5 to under 50 tCO2e, and every 6 months for 50 to under 500 tCO2e.
Can you look at a system you didn’t fit?
Yes. Systems fitted by other companies are fine from all the leading brands. Send us the make and model, and any records you have.
System by system
Outdoor unit position and planning
Flats have tighter limits, and an Article 4 direction can remove permitted development rights. Listed buildings also need separate consent and we check what applies to you.
Heat loss surveys
The survey covers the building fabric and how air moves through it, and the size of each room.
Common problems we fix in Radlett
Homes with electric heating sometimes look at heat pumps as an alternative. A survey shows whether a heat pump suits the property and what would need to change, and we explain the grant position for your home.
If any of these sounds familiar, it’s worth a diagnosis:
- An oil, LPG or gas boiler near the end of its life
- Planning and permitted development questions
- Radiators that may be too small for a heat pump
Period properties close to St John can suit a heat pump, though insulation and any heritage protection are checked first.
What your quote should include
- The make and model of any parts or equipment being quoted
- Whether the quote is a fixed price
- Whether they looked at the job before pricing it
Places near Radlett
Other services in Radlett
What we do, step by step
Every visit follows the same order: agree the plan on site, put the dust sheets down, carry out the job, check the system and explain it all to you. The visit itself 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. Seeing the property in photos first helps us plan the trip to Radlett.
- We talk through your home, your current heating and what you want from a heat pump.
- 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.
- We fit the outdoor unit and connect it to the heating, hot water and controls.
- Commissioning, MCS certification and a handover of the controls finish the job.
Before we arrive
- Keep pets out of the rooms we are working in
- Move furniture away from the wall where we will be working
- Let us know where the consumer unit is
Get a fixed-price quote
Photos are the fastest route to a quote: the room or the existing unit, the outside wall or roof where the outdoor unit sits or would go, and the label on any existing unit. Tell us the address and what you need, and many jobs can be priced from that.
Related advice
What owners can safely do
There are a few things you can safely do yourself: keep the outdoor unit clear of leaves, plants and clutter, check the settings and the remote, and follow the cleaning the manual describes. Opening up the units, the electrics and the refrigerant circuit are a job for us.
Leave the units and pipework where they are. Moving a unit involves the refrigerant circuit, so it needs an F-Gas qualified engineer, and the electrical side needs a competent person. If you need something moved, we can quote for it.
What a heat pump looks like in Radlett
About 71% of households live in detached or semi-detached houses, according to Census 2021 figures. Detached and semi-detached houses usually have room for the outdoor unit and a cylinder. The middle of Radlett is part of the Radlett North Conservation Area. Draw a one-mile circle round the middle of Radlett and it takes in 2 conservation areas. On the National Heritage List, around 7 entries fall within 0.5 miles of the middle of Radlett; Primrose Cottages (grade II) is one. Where a home is affected, the outdoor unit position is settled with Hertsmere council, usually the planning authority here before the heat pump design is finished.
High Elms Manor lies about 3.3 miles west. Owners of listed homes need consent before a heat pump is fitted, so it’s one of our first questions.
Radlett is about 3 miles north-west of Borehamwood, in Hertfordshire. Homes and businesses alike in Radlett, we can help with air source heat pumps. We reply to enquiries the same working day and our emergency line runs 24/7. Our Hertfordshire coverage runs to 381 places, and Radlett is one of them. We also work in London, about 16 miles from Radlett.
Work in WD7 follows the same survey, fixed-price quote and written records as everywhere else we cover. The B462 and A5183 pass through or close to Radlett, which keeps journeys to surveys and visits simple. If you are just outside Radlett, we cover Kemprow (1 mile west), Round Bush (1 mile south-west), Letchmore Heath (1 mile south-west), Aldenham (2 miles south-west) and Patchetts Green (2 miles south-west). Within a short drive, we also cover Watford (4 miles south-west), Hemel Hempstead (8 miles north-west), St Albans (5 miles north) and Welwyn Garden City (10 miles north-east).
Near you in Radlett
In Radlett, that means homes and buildings near The Cat And Fiddle Public House. There’s a railway station in Radlett itself: Radlett station. Well-known places in the area include Radlett and District Museum (under half a mile south-east) and Harlequin Centre (3.7 miles south-west). Not far away are Verulamium Lake and Broad Colney Lakes.
From one of our customers
“Office air con broke down in the July heatwave. Called at 8am, engineer was here by noon and fixed within 2 hours. Brilliant emergency response. They now hold the service contract for the whole building.”
James T., Crawley, office manager