Is the Boiler Upgrade Scheme Worth It? UK Guide 2026
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Quick answer: is the Boiler Upgrade Scheme worth it?
For many eligible homeowners, yes, the Boiler Upgrade Scheme can be worth using because £7,500—or £9,000 for certain off-gas oil and LPG properties—can remove a large part of the cost of installing a heat pump.
The strongest cases are usually homes already needing a new heating system, properties replacing expensive direct electric heating, and qualifying oil or LPG homes receiving the temporary £9,000 grant.
However, BUS does not guarantee lower energy bills. A homeowner replacing an efficient modern gas boiler may still pay more upfront than for another boiler, while heat-pump running costs depend heavily on system efficiency and electricity tariffs.
Is the Boiler Upgrade Scheme Worth It in 2026?
If you are considering a heat pump, the Boiler Upgrade Scheme can remove a substantial part of the upfront cost. However, receiving a large grant does not automatically make every installation a good financial decision.
In England and Wales, the standard Boiler Upgrade Scheme (BUS) grant is currently £7,500 towards an eligible air-to-water or ground source heat pump. Eligible off-gas-grid properties replacing oil or LPG can receive £9,000 until 31 March 2027. Residential air-to-air heat pumps can receive £2,500, while qualifying biomass boilers receive £5,000.
Whether the Boiler Upgrade Scheme is worth it depends on what you would pay after the grant, what heating system you are replacing and how efficiently the proposed system will operate.
This guide focuses on those questions rather than repeating the full eligibility rules. For those, see our Boiler Upgrade Scheme 2026 updates.
Considering a heat pump? Compare properly surveyed quotes after the BUS discount rather than choosing on the headline grant alone.
What does the Boiler Upgrade Scheme give you?
The grant is an upfront contribution to an eligible installation, not cashback after you have paid the full price. BUS is installer-led: an MCS-certified installer submits the application, and the property owner confirms consent. Ofgem then pays the successful grant to the installer.
| System | Current BUS support | Where the financial case can be strongest |
|---|---|---|
| Air-to-water heat pump | £7,500 | Most homes replacing a wet central-heating system |
| Ground/water source heat pump | £7,500 | Properties where higher installation costs and site conditions still make ground source viable |
| Eligible off-gas oil/LPG replacement | £9,000 | Particularly attractive while the temporary uplift applies |
| Residential air-to-air heat pump | £2,500 | Smaller properties or homes without wet central heating |
| Eligible biomass boiler | £5,000 | Limited rural, off-gas situations |
The £9,000 heat-pump rate applies to qualifying oil- and LPG-heated properties without a mains gas connection and is currently scheduled to run until 31 March 2027.
How much could you actually pay after the grant?
Energy Saving Trust gives an indicative typical air source heat-pump installation cost of around £11,000, although individual projects vary. Meanwhile, analysis of Boiler Upgrade Scheme installation data by Nesta put the 2025/26 median air source installation cost at £13,041.
That demonstrates why the grant should not be considered in isolation.
An £11,000 installation with a £7,500 grant leaves £3,500 to fund. A £13,041 installation leaves about £5,541. An eligible £13,041 off-gas installation receiving £9,000 would leave around £4,041.
These are illustrations rather than quotations. Radiator changes, a hot-water cylinder, electrical work, pipework and unusual access can move the final figure significantly.
Some suppliers can also be materially cheaper than the national median. Therefore, comparing several complete, post-survey quotations matters more than relying on an average.
For a wider technology-level assessment, see whether air source heat pumps are worth it.
Does BUS make a heat pump cheaper than a gas boiler?
Sometimes, but there are two separate comparisons: purchase price and running cost.
BUS dramatically reduces the purchase-price gap. Government analysis used in the scheme’s 2026 business case estimated a gas boiler at about £3,500, while BUS-supported air-source installations remain considerably more expensive before the grant.
After £7,500 support, a straightforward heat-pump installation may therefore become reasonably close to the cost of a replacement boiler. A complex retrofit can still cost substantially more.
Read our detailed air source heat pump vs gas boiler comparison if you are choosing between those systems rather than assessing the grant itself.
What about the running costs?
BUS reduces capital cost. It does not subsidise the electricity you subsequently use.
For 1 July to 30 September 2026, Ofgem’s average Direct Debit price-cap rates are 26.11p/kWh for electricity and 7.33p/kWh for gas.
As an illustration, a 90%-efficient gas boiler turns gas costing roughly 8.1p into one useful kWh of heat. At the current electricity rate, a heat pump would need seasonal efficiency of roughly 3.2 times, or a SCOP of about 3.2, to reach similar energy-only costs.
That comparison excludes standing charges and individual tariffs. Ofgem only requires eligible air-to-water and ground-source BUS installations to achieve an in-situ SCOP of at least 2.8, so BUS eligibility itself does not guarantee running-cost parity with gas.
Energy Saving Trust similarly warns that a heat pump on a standard electricity tariff can cost slightly more to run than a new gas boiler. Heat-pump or time-of-use tariffs can materially improve the comparison.
See our guides to air source heat-pump running costs and heat pump vs gas boiler running costs for the detailed calculations.
When is the Boiler Upgrade Scheme most worth it?
| Situation | Likely BUS value | Main reason |
|---|---|---|
| Oil/LPG home qualifying for £9,000 | Very strong | Larger temporary grant and existing heating already needs replacing |
| Direct electric heating | Strong | A heat pump can use substantially less electricity to provide the same heat |
| Old, inefficient boiler due for replacement | Strong to moderate | You need to spend money on heating anyway |
| Efficient modern gas boiler | Property-specific | Running-cost and capital savings may be limited |
| Expensive or difficult retrofit | Property-specific | Extra works can consume much of the grant's financial benefit |
Government evaluation provides useful real-world evidence. After at least one heating season, 89% of surveyed BUS participants were very or fairly satisfied with their low-carbon heating system, while only 3% were dissatisfied.
However, bills were not universally lower. In the same research, 37% reported lower total energy bills, 13% reported increases and other respondents reported no change, lacked a previous bill or said it was too early to tell. Direct-electric users were particularly likely to report a decrease.
That is a much more useful picture than claiming every BUS installation produces an immediate payback.
When might BUS not be worth it?
The grant is less compelling when the system only becomes attractive because of the word “£7,500” in the sales pitch.
For example, think carefully if you already have a relatively new and efficient gas boiler, your property needs extensive heating-system alterations, you expect to move soon, or the quoted heat pump has weak projected seasonal performance.
You should also question a proposal where the installer cannot clearly explain annual heat demand, expected seasonal efficiency, flow temperature, radiator requirements and estimated electricity consumption.
Online homeowner discussions repeatedly raise another concern: some customers receive unexpectedly high prices even after BUS has been deducted. Those anecdotes do not prove installers generally “absorb” the grant, but they reinforce the value of comparing multiple like-for-like quotations rather than assuming the discounted price is automatically competitive.
What can reduce the value of the grant?
A £7,500 grant looks substantial, but the net economics can change quickly.
A £4,000 package of additional radiator, cylinder, pipework or electrical work is still £4,000 you must fund. Finance interest can add further cost. Retaining a gas connection for cooking or another appliance also means continuing to pay the gas standing charge.
The government’s BUS evaluation found supplementary works were common. It also found that understanding controls matters: among surveyed owners who felt completely confident about programming their system to reduce running costs, 53% reported lower bills, compared with only 14% among those who were not at all confident.
The lesson is simple: judge the complete heating system, not the grant amount or heat-pump unit alone.
How to decide whether BUS is worth it for your home
Use this six-step test before accepting a quotation:
- Find the true post-grant cost. Confirm exactly what is included and what you will personally pay.
- Compare it with the alternative. If your boiler needs replacing anyway, compare the extra cost of the heat pump rather than its entire price.
- Check expected seasonal efficiency. Ask for the predicted SCOP and the assumptions behind it.
- Calculate realistic running costs. Use your heat demand and actual electricity tariff, not a generic percentage-saving claim.
- Include every required alteration. Radiators, cylinders, electrics and pipework belong in the calculation.
- Consider how long you will own the property. A long-term heating decision has a different value from an upgrade shortly before a planned move.
Do not rely on a single “payback period” unless you understand the assumptions behind it.
Should you use BUS now or wait?
There is no general need to rush solely because you believe BUS is about to disappear. The government has committed funding for the expanded scheme through 2029/30, with approximately £2.7 billion allocated to BUS through 2030.
There is, however, a genuine deadline for one group. The temporary £9,000 rate for qualifying off-gas oil and LPG properties currently lasts only until 31 March 2027. Eligible households considering a heat pump therefore have a stronger reason to investigate quotations before that uplift ends.
Current rules also provide 0% VAT on qualifying heat-pump installations until 31 March 2027, adding another timing consideration.
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Frequently asked questions
Find clear answers to common questions about whether the Boiler Upgrade Scheme is worth it in 2026, including grant values, the £9,000 uplift, installer-led payments, income rules, landlords, running costs, EPC and insulation requirements, hybrid systems, efficiency standards and scheme duration.
It can be. The standard £7,500 heat-pump grant can substantially reduce upfront costs, but the final decision should depend on your post-grant price, expected efficiency and running costs.
Eligible air-to-water and ground-source heat pumps receive £7,500. Residential air-to-air systems receive £2,500 and eligible biomass boilers receive £5,000.
Qualifying properties without a mains gas connection that replace oil or LPG heating with an eligible air-to-water or ground-source heat pump can currently receive £9,000.
Under current rules, the temporary uplift ends on 31 March 2027.
Not necessarily. The grant is a fixed contribution. You pay any remaining installation cost after the grant is deducted.
No. BUS is installer-led. The installer applies and the grant is used as an upfront reduction in your installation cost.
The main eligibility conditions published by GOV.UK relate to property ownership, the existing heating system and property/system eligibility rather than household income.
Yes. Owners of eligible rented properties can qualify, subject to the normal scheme conditions.
No. BUS does not fund a replacement fossil-fuel boiler. It supports eligible low-carbon heating technologies.
No. BUS lowers installation cost, not running costs. Energy Saving Trust says a heat pump on a standard electricity tariff can currently cost slightly more to run than a new gas boiler in some circumstances.
A valid EPC is no longer a standing requirement for applications properly made from 28 April 2026. Where necessary, alternative evidence can be used to establish property eligibility.
The previous requirement concerning outstanding loft or cavity-wall insulation recommendations has been removed. Energy-efficiency improvements can still be worthwhile because reducing heat loss can improve heating performance.
A fossil-fuel hybrid system is not eligible for the normal BUS heat-pump grant.
Yes. Eligible air-to-water and ground-source systems must achieve an in-situ SCOP of at least 2.8 under current Ofgem requirements.
The scheme was extended in 2026 and government funding is now allocated through 2029/30. Current grant values or individual temporary uplifts could still change during that period.
So, is the Boiler Upgrade Scheme worth it?
For many households, yes. BUS is one of the most significant ways to reduce the upfront cost of replacing fossil-fuel or direct-electric heating with a heat pump.
The financial case is especially attractive when your existing heating system already needs replacement, when a heat pump should materially reduce energy use, or when you qualify for the temporary £9,000 oil/LPG rate.
However, the grant does not turn every heat-pump installation into a bargain. A modern gas-heated property with a costly retrofit may have a weak short-term financial case even after £7,500 support.
The right question is therefore not simply “Can I get the grant?” It is “What will this complete system cost me to buy and run after the grant?”
Get that answer from properly surveyed, comparable quotations before deciding.
Compare free heat-pump quotes based on your property, expected performance and current BUS eligibility.
