A heat pump radiator upgrade means replacing only the radiators that are too small to heat their room at the lower water temperatures a heat pump runs at. A gas boiler usually sends water to radiators at 60–75°C, while a well-designed heat pump system typically runs at around 35–50°C. Cooler water gives out less heat from the same radiator, so some rooms need more radiator surface to stay comfortable.
Radiator fitting in Lincolnshire is scheduled with your heat pump installation so the system is drained only once. Extensions and kitchen-diners around Lincolnshire with large glazed areas get their own radiator calculation. For period homes in Lincolnshire and across Lincolnshire, column radiators can keep the character of a room while giving enough heat at low temperatures.
Who it suits
- Rooms with little wall space, where a fan-assisted radiator fits better
- Homes switching from a gas, oil or LPG boiler to a heat pump
- Rooms that already feel slow to heat, such as bay-windowed living rooms
- Homeowners who want the lowest practical flow temperature for efficiency
Grants and rules for heat pumps in England
Homes in Lincolnshire 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.
Heat pump radiators prices in Lincolnshire
These are guide prices for Lincolnshire, 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.
| Work | Guide price |
|---|---|
| Replacement radiator, sized for a heat pump (each, fitted) | £250–£450 |
| Upgrade of about 10 radiators | £2,000–£5,000 |
| Pipework upgrade (e.g. microbore to larger bore) | £1,500–£3,500 |
Installed, inc VAT. The survey lists which radiators need changing.
Towns we cover in Lincolnshire
We cover 14 towns in Lincolnshire for heat pump radiator upgrades. Each links to local guide prices and the grant position for England.
| Town | Postcode district | Nearest town | Midwinter daylight |
|---|---|---|---|
| Lincoln | LN6 | Gainsborough | 7 h 31 min |
| Grimsby | DN32 | Cleethorpes | 7 h 27 min |
| Scunthorpe | DN16 | Brough | 7 h 27 min |
| Boston | PE21 | Spalding | 7 h 34 min |
| Grantham | NG31 | Sleaford | 7 h 35 min |
| Cleethorpes | DN35 | Grimsby | 7 h 27 min |
| Spalding | PE11 | Bourne | 7 h 36 min |
| Skegness | PE25 | Boston | 7 h 32 min |
| Stamford | PE9 | Bourne | 7 h 37 min |
| Gainsborough | DN21 | Retford | 7 h 29 min |
| Louth | LN11 | Horncastle | 7 h 29 min |
| Sleaford | NG34 | Grantham | 7 h 34 min |
| Bourne | PE10 | Stamford | 7 h 36 min |
| Horncastle | LN9 | Louth | 7 h 31 min |
Heat pump radiator upgrades questions
Will new radiators be much bigger than my old ones?
Sometimes, but not always. Swapping a single-panel radiator for a double or triple-panel model of the same height and width can raise output substantially, adding only depth from the wall. Where that is not enough, a longer or taller radiator, or a second radiator in the room, may be needed. We agree sizes and positions with you before anything is ordered.
Can I keep my radiators and just run the heat pump hotter?
You can, but it usually costs more to run. Every extra degree of flow temperature reduces a heat pump's efficiency, so a system designed at 55°C uses noticeably more electricity than one at 45°C for the same heat. A few well-chosen radiator upgrades often let the whole house run cooler, which is the better long-term trade.
Can radiators be changed without draining the whole system?
Radiator changes normally mean draining the heating system, which is why they are usually done as part of the heat pump installation. The system is then refilled, flushed, treated with inhibitor and balanced. Doing the radiators at the same time avoids draining twice and means the new radiators are commissioned with the heat pump.
Do I need new radiators for a heat pump?
Not necessarily: many homes keep most of their radiators and replace only a few. The heat loss survey checks each room against its existing radiator at the planned flow temperature. Rooms with large windows, high ceilings or extensions are the usual candidates for an upgrade, while bedrooms often need no change. Your radiator schedule lists every decision.