- Area
- Merseyside
- Postcode district
- WA10
- Nation
- England
- Guide price
- From £9,200 inc VAT
- Survey
- Free for installation enquiries
What to know about replacing an oil or LPG boiler with a heat pump in St Helens
Every property in St Helens is different, so the design starts from measurements rather than a rule of thumb. That keeps the system the right size and the running costs predictable.
Bungalows and detached houses near St Helens running on LPG can move to a heat pump, with the tank collected by the supplier. If your home near St Helens is off the mains gas grid, a heat pump removes the need for oil or LPG deliveries.
Off-gas homes have a lot to plan when switching to a heat pump: the fuel tank, older walls, rural power supplies and higher heat loss.
- Older oil boilers nearing the end of their life
- Detached houses and bungalows with garden space for the unit
- Owners tired of fuel deliveries and tank maintenance
What's included
- Free survey with a detailed heat loss calculation for older construction
- MCS certificate and grant application in England and Wales where eligible
- Help arranging LPG tank collection with your supplier
- Oil tank draining and removal or making safe, as set out in your quote
- Outdoor unit, heat pump cylinder, controls and radiator changes
Owners across Merseyside can have oil tank removal arranged alongside a heat pump installation in St Helens.
Grants and rules for heat pumps in England
Homes in St Helens 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.
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.
Guide prices for replacing an oil or LPG boiler with a heat pump in St Helens
Here are typical prices for replacing an oil or LPG boiler with a heat pump in Merseyside, installed and including VAT. Use the guide price tool for a figure based on your home, then a survey confirms it in writing.
| Home | Typical size | Installed guide price | After £9,000 grant |
|---|---|---|---|
| 1–2 bedroom flat or small terrace | 4–5 kW | £9,200–£12,150 | £200–£3,150 |
| 2–3 bedroom terrace or semi | 5–7 kW | £10,200–£13,100 | £1,200–£4,100 |
| 3 bedroom semi or small detached | 6–9 kW | £11,650–£15,050 | £2,650–£6,050 |
| 4 bedroom detached | 8–12 kW | £13,600–£17,450 | £4,600–£8,450 |
| 5+ bedroom or larger older house | 11–16 kW | £16,000–£21,850 | £7,000–£12,850 |
Installed, inc VAT: unit, cylinder, controls, minor pipework and commissioning. The £9,000 Boiler Upgrade Scheme figure applies to oil and LPG replacements in England and Wales installed from 21 July 2026 to 31 March 2027.
Winter daylight and heating in St Helens
On the shortest day St Helens gets only about 7 hours 29 minutes of daylight and the noon sun sits around 13° above the horizon. Northern winters tend to be longer, so a well-designed, efficient system matters more here because it runs for more of the year.
How installation works in St Helens
- Tell us about your home: postcode, property type and current heating.
- We book a survey in St Helens; the surveyor measures rooms, windows and radiators and looks at cylinder space.
- The design and quote arrive in writing, including radiator changes and the outdoor unit position.
- On installation days the old system is removed and the new one fitted and filled.
- We commission the heat pump, show you the controls and register the installation.
Replacing an oil or LPG boiler with a heat pump in St Helens: questions
How long does installation take in St Helens?
Most installations take 2–4 days on site. Jobs with several radiator changes or new pipework take longer, and your quote for a St Helens home states the expected time.
How soon can you survey a home in St Helens?
Survey dates depend on how busy installers are in Merseyside. We offer the next available dates when you enquire and confirm them in writing.
Do you cover Prescot as well as St Helens?
Yes. We arrange surveys and installation in Prescot, which is about 3 miles south-west of St Helens, and across Merseyside.
What happens with a leased LPG tank?
Leased LPG tanks belong to the supplier, so the supplier arranges collection. Check your contract for notice periods and any charges before you fix a date. We time the switchover so you are not left without heating, and once the heat pump is commissioned the supplier can empty and remove the tank. Bottled LPG cylinders are simply returned.
Is a heat pump cheaper to run than oil?
It depends on oil prices, your home's insulation, the flow temperature and your electricity tariff, so there is no single answer. At the October to December 2026 price cap, a heat pump with a seasonal efficiency of 3.0 delivers heat for about 8.8p per kWh, and at 3.5 about 7.5p. Compare that with your oil cost per kWh of heat, allowing for your boiler's efficiency; the survey estimate gives a figure for your home.