Heat Pump Cost in Reading + BUS Grant Explained
Reading heat pump installation costs, the £7,500 Boiler Upgrade Scheme, running cost vs gas, and payback timing — every figure sourced from gov.uk, Ofgem, the Energy Saving Trust, or Checkatrade. This is the cost-attribution page for the whole site; numbers elsewhere on the site refer back here.
Last reviewed: 13 May 2026
Content reviewed against gov.uk Boiler Upgrade Scheme documentation, Ofgem grant administration guidance, and Energy Saving Trust 2026 heat pump cost figures.
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£7,500 BUS grant
for eligible Reading homes installing an MCS-certified air source heat pump (gov.uk statutory).
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£8,000–£14,000 typical install
before grant (Energy Saving Trust, 2026). Net £500–£6,500 after BUS for most Reading retrofits.
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7–15 year payback
typical range for well-designed Reading installations. Strongest on off-gas-grid (oil/LPG) properties.
The £7,500 BUS grant — what it covers
The Boiler Upgrade Scheme (BUS) is the UK government's primary subsidy for residential heat pump installation in England and Wales. It pays up to £7,500 toward an MCS-certified air source heat pump installation (£7,500 also applies to ground source heat pumps; biomass boilers receive £5,000). The grant is administered by Ofgem and authorised by the Department for Energy Security and Net Zero (DESNZ); the scheme is currently funded to 31 March 2028.
Eligibility
Eligibility under the BUS is set out on the gov.uk Boiler Upgrade Scheme page. The core conditions are:
- The property is in England or Wales (Scotland operates a separate scheme; Northern Ireland operates a separate scheme).
- The property is owner-occupied or privately rented (not new-build).
- The heat pump replaces an existing fossil-fuel heating system (gas, oil, LPG) or an off-grid electric system.
- The installer is MCS-certified.
- The property has an Energy Performance Certificate (EPC) issued within the last 10 years. EPC recommendations relating to loft and cavity wall insulation should be addressed before or alongside the heat pump installation (though specific exceptions apply — discuss with your installer if the EPC flags items that don't apply to your property).
Most Reading properties currently heated by gas, oil, or LPG meet the criteria. The most common edge cases relate to EPC age (a 12-year-old EPC needs renewing before the BUS application) and EPC recommendations (cavity wall insulation flagged on properties with already-insulated cavities). Your installer handles these checks as part of the pre-survey work.
How the application works
Your MCS-certified installer submits the BUS application on your behalf, before the installation begins. Ofgem's standard processing window is 14 days, and approval is typically received within that timeframe. The grant amount is paid directly to the installer; your installation quote shows the price after the grant has been deducted, so the figure you sign for is the net amount.
The installer is responsible for confirming MCS certification, gathering the supporting documentation (EPC, evidence of existing heating system, property ownership confirmation), submitting the application through Ofgem's portal, and presenting you with the post-grant quote.
What's covered and what isn't
The £7,500 grant is a fixed contribution. It is not a percentage of the installation cost — every eligible installation receives £7,500, regardless of whether the total installation is £8,000 or £14,000. The grant covers:
- The heat pump unit itself (outdoor unit, controls, refrigerant cycle)
- Labour for installation and commissioning
- Materials required for installation (pipework, fixings, isolation valves, hot water cylinder where included in the installer's quote)
- MCS certification paperwork and the BUS application processing
The grant does not cover:
- A new electrical consumer unit (sometimes needed if existing capacity is insufficient)
- Extensive structural alterations (new plant rooms, major pipework reconfiguration)
- Fabric-first insulation upgrades (these fall under separate schemes — ECO4, Home Upgrade Grant 2)
- Ongoing maintenance (annual service, contracts, repairs)
Combining BUS with other support
BUS can be combined with several other UK support schemes where eligible:
- ECO4 (Energy Company Obligation 4) — funds fabric improvements (insulation, draught-proofing) for lower-income households. Where ECO4 supports the insulation work and BUS supports the heat pump, the two schemes complement rather than overlap.
- Home Upgrade Grant 2 (HUG2) — funds heat pumps and insulation for low-income off-grid households (typically oil-heated rural properties). HUG2 can fund the heat pump fully in some cases, in which case BUS is not required.
- Local council schemes — Reading Borough Council and West Berkshire Council periodically operate targeted retrofit funding. Schemes change year-to-year; the installer checks for active funding as part of the survey.
BUS does not combine with the Renewable Heat Incentive (closed to new applicants since 2022) or with any historical legacy scheme — you can claim BUS only once per property.
Heat pump installation cost in Reading
Heat pump installation costs vary significantly with property type, system size, and the scope of any related work (radiator upgrades, hot water cylinder, electrical capacity). The figures below come from published UK sources — each cited in the body so you can verify the range independently.
Typical install £8,000–£14,000
According to the Energy Saving Trust (2026), a typical UK air source heat pump installation costs between £8,000 and £14,000 before grants. Checkatrade's aggregate of UK install quotes shows a wider range (£1,000–£15,000) reflecting variation between small replacement jobs and full new-system installations. Manufacturer-anchored quotes from companies like Stiebel Eltron tend to land in the £10,000–£14,000 range for full retrofit installations including a hot water cylinder and radiator upgrades.
Cost factors
Three main factors drive where your specific Reading quote lands within (or sometimes outside) the typical range:
- System size. A heat-loss-calculated system for a 1990s three-bed semi typically lands at 7–9 kW; the same property's gas boiler is usually 24–30 kW. Heat pumps are sized to the building, not to the old appliance. A 7 kW Daikin or Vaillant heat pump is materially cheaper than a 14 kW unit needed for a larger or less-insulated property.
- Brand and refrigerant. R32 systems are usually slightly cheaper than R290 systems at equivalent kW. Premium brands (Daikin Altherma 3 H HT, Vaillant aroTHERM plus R290, Mitsubishi Ecodan high-end) cost more than mid-market options (Worcester Bosch Greenstar, Grant Aerona³, Samsung EHS) at comparable specifications.
- Scope of related work. Whether you need radiator upgrades on some rooms (typically £300–£600 per radiator), a new hot water cylinder (£800–£1,500), or an electrical supply upgrade (£500–£1,500) materially affects the total. Some Reading properties need all three; some need none.
Net cost after BUS — £500–£6,500
Subtracting the £7,500 BUS grant from the install range above gives a net cost most eligible Reading homeowners pay between £500 and £6,500. Property-type distribution within this range:
- Modern estates (Lower Earley, Woodley, new Caversham builds) — typically £500–£2,500 net. Smaller heat-loss-calculated systems, minimal radiator upgrade work, usually electrical-supply-ready.
- Inter-war semis (Tilehurst, Earley, Whitley) — typically £2,500–£4,500 net. Mid-sized systems, some radiator upgrades on a subset of rooms, occasional cylinder add or electrical upgrade.
- Period properties (central Reading and Caversham Victorian terraces) — typically £4,500–£6,500 net. Larger systems, full radiator review, often a new cylinder and sometimes electrical upgrade.
These are typical distributions, not commitments. Request a free quote for a property-specific figure.
Comparing to gas boiler installation
A like-for-like gas boiler replacement in a Reading home typically costs £2,500–£4,500 installed (range from Checkatrade UK gas boiler cost data). After the £7,500 BUS grant, the net cost of a heat pump installation in many Reading properties is comparable to or only modestly higher than a gas boiler replacement. The cost gap closes further when running costs, lifespan, and electricity-vs-gas-price trajectory are factored in (see the running costs section below).
For off-grid Reading-area properties currently heated by oil or LPG, the cost comparison strongly favours the heat pump even before the £9,000 BUS uplift (DESNZ, April 2026 announcement for July 2026 opening) is taken into account — oil and LPG running costs are materially higher than gas, so the running-cost saving is larger and the payback is shorter.
Running costs and savings
Energy bills vs gas
Heat pump running cost depends on three variables: the heat pump's seasonal efficiency (SCOP), the price you pay per kWh of electricity vs gas, and your annual heating energy use. At a SCOP of 3.5 (mid-range for a well-designed retrofit) and current UK electricity prices, the running cost per kWh of delivered heat is broadly comparable to a gas boiler on a standard tariff.
The picture shifts on a heat-pump-specific tariff — Octopus Cosy, EDF Heat Pump, OVO Heat Pump Plus, and similar. These tariffs offer reduced-rate windows during the periods heat pumps typically run; a well-scheduled heat pump on the right tariff can land 20–40% below gas-boiler running costs. The Energy Saving Trust running-cost calculator shows the current figures reflecting wholesale price movements.
Maintenance costs (~£100–£200/year)
Annual heat pump servicing in Reading typically costs £100–£200 (Energy Saving Trust, 2026). Maintenance contracts that bundle the annual service with interim visits and priority response typically cost £200–£400 per year. See our servicing page and maintenance page for what each covers.
Heat pump maintenance cost is comparable to gas boiler annual servicing (£80–£150 typical) — slightly higher on average reflecting the specialist F-Gas qualifications required.
SCOP/COP and how they affect bills
SCOP — the Seasonal Coefficient of Performance — is the single biggest variable in your running cost. A SCOP of 4.0 uses 25% less electricity than a SCOP of 3.0 for the same heat output. The MCS minimum SCOP for a BUS-grant-eligible installation is 2.8; the UK fleet average is around 3.87 (per HeatpumpMonitor.org's 2026 monitored installation data); premium installations regularly hit 4.5 or higher.
Where a heat pump lands within this range depends on design and commissioning quality more than on the brand. A well-installed heat pump at the upper end (SCOP 4.0–4.5) delivers the running-cost case the marketing claims; a poorly-installed system at the lower end (SCOP 2.5–3.0) costs more to run than a gas boiler. The single biggest predictor of where your system lands is whether the installer carried out a proper heat-loss calculation, sized radiators for the design flow temperature, and tuned the weather compensation curve at commissioning.
Payback period
Payback (the time it takes lower running costs to recoup the higher net upfront cost vs a gas boiler counterfactual) is typically 7–15 years for well-designed Reading installations. Payback is shorter for:
- Off-gas-grid households replacing oil or LPG (both significantly more expensive per kWh than gas — typical 3–7 year payback)
- Households on heat-pump-specific tariffs with good schedule alignment
- Households with higher-than-average heating demand (more annual savings to amortise the upfront)
Payback is longer for:
- Households on the most efficient gas tariffs already
- Smaller homes with lower heating demand (less annual saving to amortise)
- Installations that landed at the upper end of the cost range without a corresponding efficiency case
Heat pumps typically last 15–20 years (vs 10–15 for gas boilers), so even at the longer end of the payback range, the equipment is still delivering running-cost savings for several years after payback completes.
Other grants and funding options
Beyond the £7,500 BUS grant, three other UK schemes can support a Reading heat pump installation or the wider retrofit it sits within.
ECO4 (Energy Company Obligation 4)
ECO4 is the current UK Energy Company Obligation scheme (April 2022 – March 2026, with consultation underway on ECO5). ECO4 funds fabric improvements — cavity wall insulation, loft insulation, internal/external wall insulation, draught-proofing — for low-income households or those with low-energy-rated properties. Where ECO4 supports the fabric work and BUS supports the heat pump, the two schemes complement: insulating first reduces the heat-loss demand the heat pump has to meet, lowering the kW size needed and the running cost.
Home Upgrade Grant 2 (HUG2)
HUG2 funds heat pumps, insulation, and other low-carbon technologies for low-income, off-grid households — typically oil-heated rural properties. Where HUG2 fully funds the heat pump, BUS is not required. HUG2 funding is allocated through local authorities, so eligibility and application processes vary by council. Reading Borough Council and West Berkshire Council each have HUG2 allocations.
Local council schemes
Reading Borough Council periodically operates targeted retrofit funding — typically pilot schemes covering specific neighbourhoods or property types. West Berkshire Council operates similar pilots. Active schemes are listed on each council's website; your installer checks for active schemes during the survey.
Reading neighbourhoods we cover
Our Reading-area installer network covers the major Reading neighbourhoods. Property-type distribution affects which end of the cost range typically applies — see the cost section above for typical net-cost distributions by area.
Frequently asked questions
How much does a heat pump cost in Reading after the BUS grant?
Most eligible Reading homeowners pay £500–£6,500 net after the £7,500 BUS grant has been deducted, against a typical install range of £8,000–£14,000 before grant (Energy Saving Trust, 2026). The inter-war and modern-estate retrofits common in Reading typically land in the middle of this range at £2,500–£4,500 net. Period properties at the upper end may pay £4,500–£6,500 net after grant, reflecting more radiator upgrade work.
Who is eligible for the £7,500 BUS grant?
Eligibility under the Boiler Upgrade Scheme is set by gov.uk: the property must be in England or Wales, owner-occupied or privately rented, and not new-build. The heat pump must replace an existing fossil-fuel system (gas, oil, LPG) or off-grid electric heating, and the installer must be MCS-certified. Most Reading properties currently heated by gas, oil, or LPG meet the criteria. The full eligibility rules are on the gov.uk Boiler Upgrade Scheme page.
How is the BUS grant paid?
The grant is paid directly to your MCS-certified installer, not to you. Your installation quote shows the price after the grant has been deducted, so the figure you sign for is the net amount you actually pay. No homeowner paperwork is needed beyond signing the application form your installer prepares.
Can I combine the BUS grant with other funding?
In some cases yes. The BUS grant doesn't combine with the Renewable Heat Incentive (closed to new applicants since 2022), but it can be combined with ECO4 funding for fabric improvements, Home Upgrade Grant funding for off-grid low-income households, and local council schemes where available. Your installer will check the combinations applicable to your property as part of the survey.
Will the BUS grant be extended beyond 2028?
The BUS scheme is currently funded until 31 March 2028 (gov.uk). Whether it's extended or replaced after that date depends on the next government's policy on heat pump deployment. The £9,000 off-gas oil/LPG uplift announced by DESNZ in April 2026 is expected to open in July 2026 and runs to 31 March 2027 — eligible off-grid Reading properties can claim this higher amount during that window.
What does a heat pump cost to run vs a gas boiler?
At a SCOP of 3.5 (mid-range for a well-designed retrofit) and current UK electricity prices, a heat pump's running cost per kWh of delivered heat is broadly comparable to a gas boiler on a standard tariff — sometimes slightly higher, sometimes slightly lower. On a heat-pump-specific tariff (Octopus Cosy, EDF Heat Pump, OVO Heat Pump Plus), a well-scheduled heat pump can land 20–40% below gas-boiler running costs. The Energy Saving Trust publishes updated comparisons reflecting current wholesale prices.
What's the payback period on a heat pump in Reading?
Typical payback (the time it takes lower running costs to recoup the higher upfront cost vs a gas boiler counterfactual) is 7–15 years for well-designed Reading installations. The case is strongest for off-gas-grid households replacing oil or LPG (both significantly more expensive per kWh than gas), and weakest for households on the most efficient gas tariffs with backup heating already in place. The £7,500 BUS grant materially shortens payback by reducing the upfront-cost gap.
How much does heat pump servicing cost annually?
Annual heat pump servicing in Reading typically costs £100–£200 (Energy Saving Trust, 2026). The annual service covers performance check, refrigerant pressure, filter and coil cleaning, condensate inspection, and controls tune-up. See our servicing page for full scope. Maintenance contracts that bundle the annual service with interim visits and priority response typically cost £200–£400 per year.
Are there grants other than BUS for heat pumps in Reading?
Yes — ECO4 (Energy Company Obligation 4) covers fabric improvements (insulation, draught-proofing) for eligible lower-income households and can sometimes fund a heat pump as part of a wider whole-house retrofit. The Home Upgrade Grant 2 funds heat pumps and insulation for low-income, off-grid households (oil/LPG-heated). Reading Borough Council periodically operates targeted retrofit support — current schemes are listed on the council's website. Your installer will confirm which combinations apply.
How do I get a Reading-specific cost quote?
The figures on this page are sourced national ranges. For an accurate figure for your specific Reading property, request a free quote — the survey covers heat-loss calculation (which drives system size), radiator assessment (which drives any upgrade cost), and your existing heating fuel (which determines BUS eligibility). The quote shows the actual figure you'd pay net of grants.
Is the BUS grant taxable?
No — the BUS grant is paid to the installer rather than the homeowner and is not treated as income for the homeowner. The reduced installation cost (after grant deduction) is what appears on your installation invoice. No tax return entry is required by homeowners receiving BUS-grant-supported installations.
What happens if I sell the house — can the new owner claim the BUS grant on a future heat pump?
The BUS grant is per-property rather than per-owner — but it's a one-off grant for the heat pump installation, not an ongoing subsidy. Once a property has been through a BUS-supported installation, that grant has been claimed. A future heat pump replacement on the same property would be a separate decision (a 15-20 year horizon) and would be governed by whatever grant scheme is in operation at that time.
Get a personalised Reading quote
The figures on this page are sourced national ranges. For an accurate figure for your specific Reading property — net of BUS grant, with any radiator upgrade or cylinder costs included — submit the form on the homepage. We'll respond within 24 hours and route to a Reading-area MCS-certified installer who'll arrange a free survey.