Most heat pump cylinders are unvented, meaning they run at mains water pressure and give strong flow from every tap without a cold water tank in the loft. Unvented cylinders have safety controls that must be fitted and checked by someone qualified to work on them. We size the cylinder from your household and bathrooms, confirm your mains water supply can support it, and plan the space, pipework and discharge route at the survey.
Many homes in South Yorkshire with combi boilers have no airing cupboard, so the survey looks for the most practical cylinder space. We check mains water pressure and flow at each South Yorkshire property before choosing a cylinder. Cylinder sizes for South Yorkshire homes are based on the people living there and the bathrooms in daily use.
Who it suits
- Homes replacing a combi boiler that need space found for a cylinder
- Households with older vented cylinders and loft tanks who want mains-pressure showers
- Larger families or homes with two or more bathrooms
- Every air-to-water heat pump installation, whatever the existing boiler
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 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.
Heat pump hot water cylinders prices in South Yorkshire
The ranges below are typical installed prices for homes in South Yorkshire, including VAT. A survey sets the exact figure, because two similar-looking houses in South Yorkshire can need quite different radiators and pipework.
| Work | Guide price |
|---|---|
| Heat pump hot water cylinder (supplied and fitted) | £1,150–£2,150 |
Supplied and fitted, inc VAT. Included in every full system price.
Towns we cover in South Yorkshire
We cover 8 towns in South Yorkshire for heat pump hot water cylinders. Each links to local guide prices and the grant position for England.
| Town | Postcode district | Nearest town | Midwinter daylight |
|---|---|---|---|
| Sheffield | S1 | Rotherham | 7 h 29 min |
| Rotherham | S60 | Chapeltown | 7 h 29 min |
| Doncaster | DN1 | Adwick le Street | 7 h 28 min |
| Barnsley | S70 | Darton | 7 h 27 min |
| Chapeltown | S35 | Rotherham | 7 h 28 min |
| Darton | S75 | Barnsley | 7 h 27 min |
| Dinnington | S25 | Rotherham | 7 h 29 min |
| Adwick le Street | DN6 | Doncaster | 7 h 27 min |
Heat pump hot water cylinders questions
Will I run out of hot water with a heat pump?
Not if the cylinder is sized to how your household uses hot water. Unlike a combi, hot water is stored, so very heavy use, such as several long showers back to back, can use up the stored volume before it reheats. Sizing for your busiest period, and timing reheats sensibly, avoids this for most homes.
Can I keep my existing hot water cylinder with a heat pump?
Usually not. Cylinders designed for boilers have a small coil that cannot transfer heat quickly at heat pump temperatures, so the water would reheat slowly and efficiency would suffer. A heat pump cylinder has a much larger coil. The new cylinder can often go in the same cupboard, though, if there is enough height and floor space.
Do I need good water pressure for an unvented cylinder?
Yes. An unvented cylinder runs at mains pressure, so it needs enough incoming pressure and flow to supply your taps and showers well. We measure your mains supply at the survey. If flow is low, options include a different cylinder type or an upgrade to the incoming supply pipe, which we explain before you commit.
Does a heat pump cylinder need servicing?
Yes. An unvented cylinder's safety devices should be checked every year, including the relief valves, the expansion vessel charge and the discharge pipework. This is normally done as part of the annual heat pump service, and it is often a condition of the cylinder manufacturer's warranty. Keep the cylinder paperwork with your heat pump handover documents.