- Area
- Hertfordshire
- Postcode district
- AL8
- Nation
- England
- Guide price
- From £2,500 inc VAT
- Survey
- Free for installation enquiries
Before you book: air-to-air heat pumps in Welwyn Garden City
Most homes can run on a heat pump if the system is designed properly, and Welwyn Garden City is no different. The key is matching the heat pump and radiators to the home's heat loss.
Top-floor rooms in Welwyn Garden City that overheat in summer gain from the cooling an air-to-air system provides. Extensions and garden rooms in Welwyn Garden City that are hard to connect to the main heating can have their own air-to-air unit.
An air-to-air heat pump warms rooms directly with air, and can cool them in summer, but it does not heat your hot water.
- Extensions, conservatories and garden rooms
- Flats and apartments with storage or panel heaters
- Households that already have, or will add, a separate source of hot water
What's included
- Electrical supply and controls set up for each room
- Refrigerant pipe runs to each indoor unit, made and charged by an F-gas certified engineer
- Commissioning, MCS certificate and the air-to-air grant claim in England and Wales where eligible
- Outdoor unit and indoor units for each room
- Condensate drains and neat external pipe covers
Flats in Welwyn Garden City on storage or panel heaters can often switch to air-to-air without fitting radiators or pipework.
Grants and rules for heat pumps in England
In England the Boiler Upgrade Scheme gives £7,500 towards an air source heat pump (£9,000 if it replaces oil or LPG, from 21 July 2026 to 31 March 2027), and since 28 April 2026 a valid EPC is no longer needed. The grant is applied for by the MCS-certified installer and shown as a deduction on your Welwyn Garden City quote.
Installing heat pumps is zero-rated for VAT across the UK until 31 March 2027. Since 29 May 2025, permitted development in England allows up to two air source heat pumps on a house, each up to 1.5 m³, with no blanket 1 m boundary rule — the installation must still meet the MCS planning standards, including the noise check. Listed buildings, flats and some conservation-area positions need extra consent, which we check at survey.
What to budget for air-to-air heat pumps in Welwyn Garden City
These are guide prices for Hertfordshire, installed and including VAT. Your final price is fixed in a written quote after the survey and depends on the heat loss of the house, the radiators that need changing and where the unit goes.
| System | Installed guide price |
|---|---|
| Air-to-air heat pump, 1–2 rooms | £2,500–£5,250 |
| Air-to-air heat pump, multi-room 3–4 bedroom home | £4,200–£8,400 |
Installed, inc VAT. Air-to-air systems heat (and can cool) rooms but do not provide hot water. In England and Wales the Boiler Upgrade Scheme gives £2,500 towards an air-to-air system in a home, deducted from your quote where eligible.
Winter daylight and heating in Welwyn Garden City
On the shortest day Welwyn Garden City gets about 7 hours 46 minutes of daylight, with the noon sun around 15° up. The heating season runs from autumn into spring, so a heat pump that is sized correctly and set up with weather compensation does most of its work in steady, cool conditions.
From survey to switch-on in Welwyn Garden City
- Send your postcode and a few details, or use the guide price tool.
- A surveyor visits your Welwyn Garden City home, measures every room and checks where the outdoor unit can go.
- You receive a heat loss design and a fixed written quote, with any grant shown where it applies.
- Installers fit the unit, cylinder and any radiator changes, typically over 2–4 days on site.
- The system is commissioned, set up with weather compensation and handed over with the paperwork.
Air-to-air heat pumps in Welwyn Garden City: questions
How long does installation take in Welwyn Garden City?
Most installations take 2–4 days on site. Jobs with several radiator changes or new pipework take longer, and your quote for a Welwyn Garden City home states the expected time.
Can you service a heat pump in Welwyn Garden City that someone else installed?
Yes. We arrange servicing and repairs for most air source heat pumps in Welwyn Garden City, whoever fitted them. Tell us the make and model when you book.
What size heat pump does a Welwyn Garden City home need?
It depends on the heat loss, not the postcode. As a rough guide, a 3 bedroom semi often needs 6–9 kW, but the room-by-room survey sets the actual size for your Welwyn Garden City home.
How much sound do the indoor units make?
Indoor units are designed to run quietly, with a fan you will hear most when heating or cooling at full output. Lower fan settings and night modes reduce sound in bedrooms. Siting matters for the outdoor unit too: it needs airflow and a position that passes the MCS noise assessment. Ask to see the sound levels of the proposed units at survey.
Can an air-to-air heat pump heat my water?
No. An air-to-air heat pump heats and cools the air in rooms but does not produce hot water. You need a separate source, such as an existing immersion cylinder, a hot water heat pump or an electric water heater. If you want one system for heating and hot water, an air-to-water heat pump with a cylinder is the alternative.