Hertfordshire · Heat pump installation
Walsworth air source heat pumps
Air source heat pumps in Walsworth from an F-Gas certified company, with warranty terms explained brand by brand. Enquiries answered the same working day.
- Deciding on the outdoor unit position
- Questions about the Boiler Upgrade Scheme
- Checking emitters for a heat pump
Air source heat pumps in Walsworth
Air-to-water heat pumps heat your hot water through a cylinder. If you have a combi boiler and no cylinder, the survey looks at where one could go. Air-to-air systems don’t heat hot water, so you will need another way to do that. If the problem is ageing boilers that will need replacing and deciding on the outdoor unit position, we can help.
For a house near Walsworth, space outside is rarely the problem, so heat loss, radiators and the electrics are what we check.
AirCon Doctor is an F-Gas certified company and NICEIC approved for electrical work, with MCS certification for heat pumps and Checkatrade membership. Our engineers hold the F-gas qualifications needed to work on refrigerant.
- Where
- Walsworth (SG4, SG5)
- Wider area
- Hertfordshire
- Response
- We reply the same working day
- Quotes
- A fixed price before we start
- Certified
- F-Gas certified company, NICEIC approved, MCS
- Price guide
- £8,000–£16,000 (0% VAT on homes), before the grant
- Call
- 07833 053749
- Page updated
- 30 October 2026
Before you call an engineer
Don’t move, re-route or disconnect units or pipework yourself. 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.
For air conditioning, cleaning the indoor unit’s filters is the main job owners can do where the manufacturer’s manual explains how. With the power off, they lift out, can be vacuumed or rinsed and must be fully dry before they go back. On a heat pump, the equivalent is keeping the outdoor unit clear and checking the controls.
System by system
Radiators and underfloor heating
Underfloor heating suits a heat pump’s lower flow temperature and we look at it during the survey.
The Boiler Upgrade Scheme
There’s one grant per property, and you cannot get a grant to replace a low-carbon system. Hybrids are excluded.
Towns and villages near Walsworth
What else we do in Walsworth
The process
If the system has to be off for part of the visit, we tell you before work begins 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. Photos of the room and the outside wall help us plan a job near Walsworth.
- First, a chat about the property and your goals for the heating.
- The survey checks heat loss, emitters, hot water and the outdoor unit position.
- You get our view on the right type for the house, and on whether the Boiler Upgrade Scheme applies.
- We install the heat pump and connect it up.
- We commission it, complete the MCS certificate and show you how to use it.
How to prepare
- Tell us about access, such as roof hatches, high walls or locked plant areas
- Mention any parking restrictions near the property
- Clear access to the fuse board
Get a fixed-price quote
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. For a fixed-price quote, call 07833 053749 or drop us a line.
Related advice
Common questions in Walsworth
Will you come out to Walsworth?
Yes. Walsworth is within the area we cover across London and the South East. We are based in East Grinstead and plan each visit so the job can be finished in one trip where possible.
Does the Boiler Upgrade Scheme cover homes in Walsworth?
Yes, the scheme covers homes in England, including Walsworth, if they qualify. Whether your home qualifies, and for how much, depends on the type of heat pump and the heating it replaces. You do not apply yourself: the MCS certified installer does, which is us.
Do you offer emergency call-outs?
Yes, any time. If something urgent happens, like water coming from a unit or a critical room overheating, call our 24/7 line and we will tell you what to do first.
Do I need new radiators for a heat pump?
It varies from room to room. The survey compares each radiator with the room’s needs, so the quote covers any changes.
Can we book visits on a schedule?
Yes. We offer maintenance contracts, set at the interval the system and the manufacturer’s terms need. Each visit is written up and F-Gas records kept where they apply.
Is a heat pump permitted development?
Under the Planning Portal rules, a heat pump on a house can often be permitted development. Listed buildings are excluded, and listed building consent is separate, so we check for your property.
Can I fit air conditioning or a heat pump myself?
Anything that involves the refrigerant needs an F-Gas qualified engineer from a certified company. That’s a legal requirement, and it also matters for the manufacturer’s warranty. We are happy to quote for the full job, supply to commissioning.
Heat pumps in Walsworth: local notes
There are 2 conservation areas within a mile of the centre of Walsworth. On the National Heritage List, around 3 entries fall within 0.5 miles of the middle of Walsworth; Church of the Holy Saviour (grade II*) is one. Where a home is affected, the outdoor unit position is settled with the local planning authority (normally North Hertfordshire council) before the heat pump design is finished. Walsworth is about 32 miles from central London, well within the area we cover from our base in East Grinstead.
Homeowners near Hitchin station often ask whether a heat pump can take over from the boiler, and the heat loss survey answers that. If your home is one of the older properties near St Faith's Church, the survey checks whether it’s listed or in a conservation area before the outdoor unit position is chosen.
Walsworth is about 1 mile north-east of Hitchin, in Hertfordshire. Across the SG4 area, we can help with air source heat pumps. Our Hertfordshire coverage runs to 381 places, Walsworth among them. For properties nearby, see our London page (32 miles or so).
We cover every part of SG4 and SG5. Our engineers work on Green Lane, Orchard Road and Purwell Lane and nearby roads. Places around Walsworth that are also on our list: Poets Estate (1 mile south), Benslow (1 mile south-west), Hitchin (1 mile south-west), Bearton (1 mile west) and Great Wymondley (1 mile south-east). Larger places within reach include Stevenage (5 miles south-east), St Albans (14 miles south), Welwyn Garden City (11 miles south) and Harpenden (10 miles south).
Around Walsworth
We fit and service air conditioning in homes and premises around The Millstream pub, Kingshott School and St Mary's Church. You’ll also find Hitchin Girls' School (0.8 miles south-west) and Butts Close (1.2 miles west). Walsworth has its own railway station: Hitchin station. A little further out are Wymondley Castle (1.4 miles south-east) and Lister Hospital (2.9 miles south-east). Open spaces near Walsworth include Markham's Hill and Purwell Ninesprings.
Rented and managed buildings
Bigger systems bring extra duties: systems with an effective rated output over 12 kW need a TM44 inspection by an accredited energy assessor at least every 5 years. We arrange the inspection, get the system ready and put right anything it picks up.
For anyone managing more than one building, we can quote and plan the work across all of them. Every address has its own paperwork, so each one has its own history.
What a customer said
“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