Hertfordshire · Heat pump installation
Air Source Heat Pumps in Frithsden
Air source heat pumps across Frithsden and nearby, from a site survey or diagnosis to sign-off and a fixed price agreed before we start.
- Wanting to stop using oil, LPG or gas for heating
- Working out where a cylinder could go
- Checking eligibility for a heat pump grant
What we do, step by step
Where something has to be switched off during the work, we agree it with you first so it does not catch you out. In a business, work can often be done one area at a time. The work takes several days for an air-to-water system with a new cylinder, less for an air-to-air system. A note on how to find the property and where to park makes a visit to Frithsden easier.
- We talk through your home, your current heating and what you want from a heat pump.
- We survey the home room by room for heat loss, and check the emitters, hot water and outdoor unit position.
- A fixed-price quote follows, setting out the system, any grant that applies and the VAT.
- The outdoor unit, the indoor equipment and the controls are installed and connected.
- The system is commissioned and registered under MCS, and we show you how to use it.
Preparing for the visit
- Plan for pets to be kept clear during the visit
- Let us know if the units are on a roof, a high wall or in a locked area
- Tell us about any building rules, permits or sign-in
Get a fixed-price quote
Photos are enough for some jobs; others need a visit first. Multi-room systems, commercial buildings and anything with a long or hidden pipe route are normally surveyed first. Either way, you get a fixed price before any work is booked.
Advice
Air source heat pumps in Frithsden
Air source heat pumps collect heat from outdoor air and bring it inside with electricity running the compressor and fans. It works on the same principle as air conditioning, run the other way and the Energy Saving Trust notes that air-to-air heat pumps are sometimes referred to as air conditioning. The work covers air-to-water heat pumps, air-to-air heat pumps and underfloor heating, and common reasons people get in touch are replacing a combi boiler with a heat pump and checking whether planning permission is needed.
In a place like Frithsden, some homes are listed, and permitted development doesn’t cover listed buildings, so we check consent first.
If a fault appears while the equipment is under the manufacturer’s warranty, tell us the make, model and installation date. We’ll explain how the manufacturer’s terms are likely to apply before any chargeable work goes ahead.
- Place
- Frithsden (HP1)
- Wider area
- Hertfordshire
- Approvals
- F-Gas certified, NICEIC approved, MCS
- Prices
- £8,000–£16,000 (0% VAT on homes), before the grant
- Quote
- Fixed-price quote after a site survey
- Telephone
- 07833 053749
- Last updated
- 30 October 2026
Questions from Frithsden
Can I get the Boiler Upgrade Scheme grant in Frithsden?
Yes, the scheme covers homes in England, including Frithsden, if they qualify. The grant is £7,500 for an air source (air-to-water) heat pump and £2,500 for an air-to-air system that replaces the existing fossil-fuel heating. We hold MCS certification, so the application is ours to make for you.
Will you come out to Frithsden?
Yes, and the size of the place makes no difference to how we work. We’re based in East Grinstead and plan each visit so the job can be finished in one trip where possible.
What’s the difference between air-to-water and air-to-air heat pumps?
Air-to-water suits homes with radiators and a cylinder; air-to-air suits rooms that need heating and cooling. The survey helps decide. Both are part of what we install.
What does an air-to-water heat pump cost?
Air-to-water installations cost £8,000–£16,000 (0% VAT on homes), before the grant. Air-to-air systems are priced after a survey, with the VAT confirmed on your quote.
Can I fit air conditioning or a heat pump myself?
The refrigerant side has to be done by a qualified engineer working for an F-Gas certified company. That’s the law, not just our preference, and manufacturers expect it for their warranty too. We are happy to quote for the full job, supply to commissioning.
Will I get records for the system?
Yes. Every visit is written up, including F-Gas records for any refrigerant work. Keep them with the manual and the warranty documents.
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. Tell us the make and model and send any paperwork you have.
Homes in Frithsden and heat pumps
VOA council tax data date about 73% of homes across Frithsden and its surrounding area to the post-war years, 1945 to 1972, and about 52% of households live in terraced houses, according to the 2021 Census. Whether the walls and loft have been insulated makes a real difference to the heat pump size for homes of that period. Terraced houses share walls with neighbours, which helps, but the outdoor unit position needs care with noise next door. Central Frithsden is inside the Frithsden Conservation Area. In the mile around Frithsden’s centre, 3 conservation areas have been designated. Historic England lists about 15 buildings and structures within half a mile of the centre of Frithsden, including Church of St Lawrence (grade II*). So the heat pump survey asks two extra questions here: is the home listed, and is it inside a conservation area?
Sizing comes from the heat each room loses on a cold day, not from the size of the old boiler. Period properties close to Church of St Lawrence can suit a heat pump, though insulation and any heritage protection are checked first.
Frithsden is about 2 miles north-east of Berkhamsted, in Hertfordshire. Whatever kind of property you have in Frithsden, our engineers can help with air source heat pumps. You will hear back from us the same working day, and there’s a 24/7 emergency line. Frithsden is one of 381 towns, villages and districts in Hertfordshire where we work. For properties nearby, see our London page, about 27 miles away.
If your postcode is in HP1, you are inside the area we cover. Places around Frithsden that are also on our list: Nettleden (1 mile north-east), Potten End (1 mile south), Great Gaddesden (1 mile north-east), Fields End (1 mile south-east) and Ashridge (2 miles north-west). Larger places within reach include Watford (10 miles south-east), Hemel Hempstead (3 miles south-east), St Albans (9 miles east) and Welwyn Garden City (14 miles east).
Local landmarks in Frithsden
Typical jobs here are in properties near John F Kennedy Catholic School and the streets around them. Frithsden’s nearest station is Berkhamsted station, about 1.8 miles south-west. Well-known places in the area include Hawridge Court (4.9 miles south-west) and Hemel Hempstead Hospital (3.1 miles south-east). Green spaces nearby include Long Deans.
Aftercare tips
Here’s the after-treatment advice, short and simple:
- Book a yearly service
- Keep the outdoor unit clear all year
- Leave indoor units unobstructed
Once commissioned, we register the installation with MCS and give you the certificate. Keep it with the manufacturer’s paperwork, as you may need it later.
Let the heat pump run steadily rather than switching it on and off, using the settings agreed at handover.
What happens if it’s left?
Planning rules have specific conditions. Checking the position for your home at the survey stage avoids surprises later covering listed buildings, conservation areas and any Article 4 direction. A dirty or faulty system works harder and costs more to run.
A single unit or a whole estate, the quote is built the same way: what needs doing, how we get to it and what it needs. The price is fixed before we start, and the quote sets out the VAT.
Why choose AirCon Doctor in Frithsden
- Listed on Checkatrade
- Covering London and the South East
- F-Gas company certification
- Electrical work covered by our NICEIC approval
See what air conditioning costs or how to check a contractor.
Fixed-price quotes for air source heat pumps in Frithsden
We quote each job individually. These are the things that affect it:
- Whether the existing supply is suitable
- Access, including height, roofs and ladders
- A single visit or a regular plan
The price reflects the work, not guesswork. That’s why every job is looked at first, and the price is agreed before work begins.
Before you get in touch
Before you ask for a quote, gather:
- The address and the type of property
- Where the outdoor unit is, or where you’d like it
- Any previous service or F-Gas records
To get a fixed-price quote, ring us on 07833 053749 or use the quote form and tell us about the property and what you need. A few photos make it quicker. We reply to enquiries the same working day.
Also near Frithsden
Also in Frithsden
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