The good news is that many homes keep most of their existing radiators. Older houses were often fitted with radiators larger than they needed, and rooms that have since been insulated may now need less heat. The only way to know is a room-by-room calculation: the heat loss survey works out how much heat each room loses on a cold day and checks whether the radiator already there can deliver it at the chosen flow temperature.
Many older houses in Northumberland still have their original single-panel radiators, so the survey checks each one against the room it heats. Extensions and kitchen-diners around Northumberland with large glazed areas get their own radiator calculation. In Northumberland, bay-windowed front rooms are often the rooms that need a larger radiator when moving to a heat pump.
Who it suits
- Homeowners who want the lowest practical flow temperature for efficiency
- Rooms that already feel slow to heat, such as bay-windowed living rooms
- Homes switching from a gas, oil or LPG boiler to a heat pump
- Rooms with little wall space, where a fan-assisted radiator fits better
Grants and rules for heat pumps in England
Homes in Northumberland 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.
Heat pump radiators prices in Northumberland
These are guide prices for Northumberland, 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–£4,950 |
| Pipework upgrade (e.g. microbore to larger bore) | £1,500–£3,450 |
Installed, inc VAT. The survey lists which radiators need changing.
Towns we cover in Northumberland
We cover 10 towns in Northumberland for heat pump radiator upgrades. Each links to local guide prices and the grant position for England.
| Town | Postcode district | Nearest town | Midwinter daylight |
|---|---|---|---|
| Blyth | NE24 | Bedlington | 7 h 08 min |
| Cramlington | NE23 | Bedlington | 7 h 09 min |
| Ashington | NE63 | Bedlington | 7 h 08 min |
| Bedlington | NE22 | Cramlington | 7 h 08 min |
| Alnwick | NE66 | Morpeth | 7 h 05 min |
| Berwick-upon-Tweed | TD15 | Alnwick | 7 h 00 min |
| Hexham | NE46 | Prudhoe | 7 h 10 min |
| Morpeth | NE61 | Bedlington | 7 h 08 min |
| Ponteland | NE20 | Cramlington | 7 h 09 min |
| Prudhoe | NE42 | Newburn | 7 h 10 min |
Heat pump radiator upgrades questions
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.
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.
How much does a heat pump radiator cost?
A replacement radiator sized for a heat pump has a guide price of £250–£450 each, installed and including VAT. Upgrading about ten radiators in a typical home has a guide price of £2,000–£5,000. The final price is fixed in your written quote after the survey, once the radiator schedule shows exactly which radiators change.
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.