Hertfordshire · Heat pump installation
Air Source Heat Pumps in Old Knebworth
For heat pump installation in Old Knebworth, one call is all it takes: diagnosis, fixed price, work and sign-off. F-Gas certified, NICEIC approved and Checkatrade members.
- Moving away from fossil-fuel heating
- No space for a hot water cylinder
- Checking eligibility for a heat pump grant
About our air source heat pumps in Old Knebworth
Installing an air source heat pump in a home is zero-rated for VAT until 31 March 2027, then 5%. This is HMRC’s energy-saving materials relief, which applies to homes rather than businesses, and for air-to-air systems we confirm the VAT on your quote. Please treat this as general information rather than tax advice. The work covers radiator systems, homes heated by oil, LPG or gas and air-to-water heat pumps, and people most often call us about radiators that may be too small for a heat pump and replacing a combi boiler with a heat pump.
Homes around Old Knebworth usually have room outside for a heat pump, so the design comes down to heat loss, radiators and hot water.
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
- Old Knebworth (SG3)
- Wider area
- Hertfordshire
- Price
- Fixed, in writing
- Accreditations
- NICEIC approved, F-Gas certified, MCS
- Replies
- Answered the same working day
- Prices
- £8,000–£16,000 (0% VAT on homes), before the grant
- Phone
- 07833 053749
- Checked
- 30 October 2026
Do you need air source heat pumps in Old Knebworth?
Many people look at heat pumps when an oil, LPG or gas boiler is getting old. Planning the change before the boiler fails gives you time to survey, design and apply for any grant instead of making a rushed decision when the heating stops.
The things we are asked about most are:
- Working out where a cylinder could go
- Checking whether planning permission is needed
- A boiler that is getting old
Knebworth House lies about 0.2 miles north-west. Owners of listed homes need consent before a heat pump is fitted, so it’s one of our first questions.
Before booking anyone
- Who does the electrical work, and whether they can certify it
- Whether the company is F-Gas certified, and whether you can check it
- Whether the manufacturer’s warranty depends on regular servicing
Towns and villages near Old Knebworth
Other services in Old Knebworth
When it’s something else
We will always give you a straight diagnosis, so here’s what this work can’t put right:
- Any gas work on the existing boiler
- Tax advice on your own circumstances
- Promising eligibility for the Boiler Upgrade Scheme
Not sure which it is? You can give us a ring on 07833 053749 and we’ll tell you honestly.
Parts of the system we cover
- Air-to-water heat pumps
- Radiator systems
- Homes heated by oil, LPG or gas
- Air-to-air heat pumps
- Underfloor heating
- Hot water cylinders
Homes in Old Knebworth and heat pumps
About 64% of households live in detached or semi-detached houses, according to the 2021 Census. Finding room for the outdoor unit and a cylinder is seldom a problem in homes like these.
Live in one of the older houses around Church of St Mary and St Thomas? Expect the survey to look closely at heat loss and at the building’s planning status.
Old Knebworth is about 3 miles south-west of Stevenage, in Hertfordshire. Properties in Old Knebworth get the same service as everywhere we cover: diagnosis first, a fixed price and proper paperwork when we have finished. We cover 381 places across Hertfordshire, large and small. London, roughly 26 miles off, has its own page on this site.
Work in SG3 follows the same survey, fixed-price quote and written records as everywhere else we cover. Old Knebworth Lane and Park Lane and the roads off them are all inside our area. Other places close to Old Knebworth include Nup End Green (1 mile south-west), Driver's End (1 mile south-west), Rableyheath (1 mile south), Pottersheath (1 mile south) and Langley (2 miles north-west). Larger places within reach include Hemel Hempstead (13 miles south-west), Stevenage (3 miles north-east), St Albans (10 miles south-west) and Welwyn Garden City (5 miles south).
Near you in Old Knebworth
In Old Knebworth, that means homes and buildings near Knebworth Park and Robin Hood And Little John Public House and the streets around them. The nearest railway station is Knebworth station, about 1 mile east of the centre. A little further out are Lister Hospital (3.7 miles north) and Stevenage Museum (2.2 miles north). Open spaces near Old Knebworth include Mardley Heath.
Your questions about air source heat pumps in Old Knebworth
Can I get the Boiler Upgrade Scheme grant in Old Knebworth?
Yes, the scheme covers homes in England, including Old Knebworth, if they qualify. Whether your home qualifies, and for how much, depends on the type of heat pump and the heating it replaces. As an MCS certified installer, we apply for it on your behalf.
Will a heat pump in Old Knebworth need planning permission?
There’s no single answer: the building and the outdoor unit position decide it. Central Old Knebworth sits inside the Old Knebworth 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 do not 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 Old Knebworth, normally North Hertfordshire council).
Do you work in Old Knebworth?
Yes. We cover Old Knebworth and across Hertfordshire, as part of our area across London and the South East. For a fixed-price quote, phone 07833 053749.
How much time does a heat pump install need?
It takes from a couple of days to around a week, depending on the system and how much of the heating changes. How much of the heating changes decides most of the time and the timing is set out with your quote.
Is the equipment covered by a warranty?
Warranty is the manufacturer’s own, on its terms. Terms differ by brand, and we set them out on your quote.
Can you come out in an emergency?
Yes, 24/7. When you call, tell us the make, what’s happening and any error code, and we’ll talk you through the next steps.
Do you look at the job first?
Yes. We always look before we price, on a survey, or from your pictures and details where the job is simple. A fixed-price quote follows.
What happens on the day
The first job on site is protection: sheets over the floor and any furniture nearby and nothing is moved without asking you. After that, anything electrical is made safe and we start. The work on site 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, and we clear up before we go. For a village like Old Knebworth, tell us about narrow lanes, gates and parking when you book.
- First we talk through the property and the current system.
- A heat loss survey is carried out, room by room.
- We design the system, check the radiators and cylinder and look at the outdoor unit position.
- You get a fixed price, with any grant and the VAT set out.
- Installation, commissioning and MCS registration complete the job.
How to prepare
- Let us know if the units are on a roof, a high wall or in a locked area
- Plan for pets to be kept clear during the visit
- Give us access to the outside wall, roof or yard where the outdoor unit sits
Ask for a quote
Our prices page gives typical ranges, but your quote is based on your job, because every property is different. After a look at the job, by photos or a survey, the price is fixed. To get going, give us a ring on 07833 053749 or use the quote form.
Advice
Fixed-price quotes for air source heat pumps in Old Knebworth
The price is fixed before any work begins. It takes into account:
- Whether it’s a one-off job or part of a maintenance contract
- What electrical work the job needs
- What kind of system it is
Whatever the property, the quote works the same way: the equipment, the access, the work involved and the time it takes. Call for a fixed-price quote and we’ll go through it with you.
What we need to know
When you call or email, these details help:
- Wide photos of the room or the existing unit
- The remote or wall controller showing any error
- Any previous service or F-Gas records
To get a fixed-price quote, ring 07833 053749 or use the quote form with the address and a few details about the rooms or units involved. Photos help a lot. We reply to enquiries the same working day.
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