We cover 17 towns and cities in Hertfordshire, including Hemel Hempstead, Stevenage, St Albans and Welwyn Garden City. Every installation is designed from a room-by-room heat loss calculation, so the heat pump, radiators and cylinder are sized for the house rather than guessed.
Towns we cover in Hertfordshire
Heat pump services in Hertfordshire
Grants and rules for heat pumps in England
Homes in Hertfordshire can use the Boiler Upgrade Scheme, which takes £7,500 off the cost of an air source heat pump when it replaces fossil-fuel or electric heating. Replacing oil or LPG heating qualifies for £9,000 for installations from 21 July 2026 to 31 March 2027, and air-to-air systems for £2,500. The MCS-certified installer named in your quote applies for the grant and deducts it from the price.
There is no VAT on installing a heat pump anywhere in the UK until 31 March 2027. In England most houses can have an air source heat pump under permitted development, provided the unit meets the MCS noise and siting standards; the old 1 m boundary limit was removed on 29 May 2025. We flag listed buildings, flats and sensitive conservation-area positions at survey.
Guide prices in Hertfordshire
| Home | Typical size | Installed guide price | After £7,500 grant |
|---|---|---|---|
| 1–2 bedroom flat or small terrace | 4–5 kW | £10,000–£13,150 | £2,500–£5,650 |
| 2–3 bedroom terrace or semi | 5–7 kW | £11,050–£14,200 | £3,550–£6,700 |
| 3 bedroom semi or small detached | 6–9 kW | £12,600–£16,300 | £5,100–£8,800 |
| 4 bedroom detached | 8–12 kW | £14,700–£18,900 | £7,200–£11,400 |
| 5+ bedroom or larger older house | 11–16 kW | £17,350–£23,650 | £9,850–£16,150 |
Installed, inc VAT: unit, cylinder, controls, minor pipework and commissioning.
Questions
Does my electricity network operator need to know about a heat pump?
Your installer notifies the electricity network operator about your heat pump where this is required, so you do not need to arrange it yourself. The network operator runs the cables and substations that supply your home, and the notification lets it confirm the local supply can handle the added load. We check your incoming supply and main fuse at survey and explain anything that affects the installation before work starts.
What warranty comes with a heat pump?
A new heat pump comes with a manufacturer warranty, which passes to you, and the length depends on the make and model. Our workmanship guarantee is set out in writing in your quote. Manufacturer warranties usually depend on the system being registered and serviced as the manufacturer requires, so keep your handover pack, MCS certificate and service records together. We explain the warranty conditions for your chosen unit before you accept the quote.
How much does a heat pump cost to run compared with gas?
Running costs depend mostly on the system's seasonal efficiency (SCOP) and your tariff. Under the Ofgem price cap for October to December 2026 (Great Britain average), a heat pump with a SCOP of 3.0 delivers heat for about 8.8p per kWh, and at SCOP 3.5 about 7.5p, against about 8.9p from a 90% efficient gas boiler. At SCOP 3.0 that is roughly level with gas; a well-designed system with a higher SCOP, or a heat pump tariff, can bring it lower. If nothing else in the home uses gas, removing the meter also ends the gas standing charge, about £108 a year.
Is the home survey free?
Yes, the home survey and heat loss calculation are free when you are enquiring about an installation. If you only want a heat loss survey and report, for example to plan a renovation, a stand-alone survey is a guide price of £150–£400, including VAT. Repairs work differently: a fault-finding visit is charged at a rate agreed before we attend, and servicing is a paid visit.