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What the eligibility rules actually require, and what the survey checks.", "datePublished": "2026-09-12", "dateModified": "2026-09-12", "author": { "@type": "Person", "name": "Adam", "url": "https://alliantenergy.co.uk/about-us", "jobTitle": "Certified Installer" }, "publisher": { "@type": "Organization", "name": "Alliant Energy", "url": "https://alliantenergy.co.uk" }, "mainEntityOfPage": { "@type": "WebPage", "@id": "https://alliantenergy.co.uk/guides/old-property-boiler-upgrade-scheme-eligibility" } }, { "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "Does an old or poorly insulated house qualify for the Boiler Upgrade Scheme?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. There's no minimum EPC rating or insulation standard in the scheme's eligibility rules — you need to own the property and be replacing a fossil-fuel heating system. A heat-loss survey then sizes the heat pump to suit your property's current condition." } }, { "@type": "Question", "name": "Do I need cavity wall or loft insulation before applying for the Boiler Upgrade Scheme?", "acceptedAnswer": { "@type": "Answer", "text": "No. Gov.uk's guidance explicitly confirms you remain eligible even if you've already had energy-efficiency funding, and sets no separate insulation requirement to qualify for BUS itself." } }, { "@type": "Question", "name": "Can a listed building get a heat pump and the BUS grant?", "acceptedAnswer": { "@type": "Answer", "text": "Yes, though listed building consent may affect which insulation measures are practical. The grant eligibility itself isn't affected by listed status — only the practical design of the insulation and heat pump installation." } }, { "@type": "Question", "name": "What does the MCS heat-loss survey check?", "acceptedAnswer": { "@type": "Answer", "text": "It calculates room-by-room heat loss based on the property's actual current construction, insulation and glazing, then sizes the heat pump and emitters (radiators or underfloor heating) to heat every room adequately — it doesn't set a pass/fail insulation bar for grant eligibility." } }, { "@type": "Question", "name": "Can I keep an old range or wood burner and still get the Boiler Upgrade Scheme grant?", "acceptedAnswer": { "@type": "Answer", "text": "Often yes, provided its fossil-fuel heating function is genuinely and verifiably disconnected — for example, used only as an oven or for supplementary heat, with the heating pipework and controls physically disconnected by your installer." } }, { "@type": "Question", "name": "Is there a grant that combines insulation and a heat pump for older properties?", "acceptedAnswer": { "@type": "Answer", "text": "ECO4 Flex can fund insulation alongside a heat pump and BUS grant as a single project for households that include someone on a qualifying benefit or with a relevant health condition — worth checking if you may be eligible." } } ] } ] }, { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://alliantenergy.co.uk/" }, { "@type": "ListItem", "position": 2, "name": "Guides", "item": "https://alliantenergy.co.uk/guides" }, { "@type": "ListItem", "position": 3, "name": "Old Property Boiler Upgrade Scheme Eligibility", "item": "https://alliantenergy.co.uk/guides/old-property-boiler-upgrade-scheme-eligibility" } ] }, { "@context": "https://schema.org", "@type": "Article", "headline": "Will an Old or Hard-to-Heat House Qualify for the Boiler Upgrade Scheme?", "description": "Yes — there's no minimum EPC rating, insulation standard, or property age requirement to qualify for the Boiler Upgrade Scheme. Eligibility comes down to owning the property and replacing a fossil-fuel heating system; a heat-loss survey then sizes the heat pump to fit your home as it currently is, however hard it is to heat.", "image": "https://alliantenergy.co.uk/__l5e/assets-v1/b1c94da8-87b2-46f5-b2de-7afd64b90c74/old-property-bus-eligibility-hero.webp", "author": { "@type": "Person", "name": "Adam", "url": "https://alliantenergy.co.uk/about" }, "reviewedBy": { "@type": "Person", "name": "Adam, Certified Installer", "jobTitle": "MCS Registered Engineer" }, "publisher": { "@type": "Organization", "name": "Alliant Energy", "url": "https://alliantenergy.co.uk", "logo": { "@type": "ImageObject", "url": "https://alliantenergy.co.uk/logo.png" } }, "datePublished": "2026-09-12", "dateModified": "2026-09-12" }, { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "Does an old or poorly insulated house qualify for the Boiler Upgrade Scheme?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. There's no minimum EPC rating or insulation standard in the scheme's eligibility rules — you need to own the property and be replacing a fossil-fuel heating system. A heat-loss survey then sizes the heat pump to suit your property's current condition." } }, { "@type": "Question", "name": "Do I need cavity wall or loft insulation before applying for the Boiler Upgrade Scheme?", "acceptedAnswer": { "@type": "Answer", "text": "No. Gov.uk's guidance explicitly confirms you remain eligible even if you've already had energy-efficiency funding, and sets no separate insulation requirement to qualify for BUS itself." } }, { "@type": "Question", "name": "Can a listed building get a heat pump and the BUS grant?", "acceptedAnswer": { "@type": "Answer", "text": "Yes, though listed building consent may affect which insulation measures are practical. The grant eligibility itself isn't affected by listed status — only the practical design of the insulation and heat pump installation." } }, { "@type": "Question", "name": "What does the MCS heat-loss survey check?", "acceptedAnswer": { "@type": "Answer", "text": "It calculates room-by-room heat loss based on the property's actual current construction, insulation and glazing, then sizes the heat pump and emitters (radiators or underfloor heating) to heat every room adequately — it doesn't set a pass/fail insulation bar for grant eligibility." } }, { "@type": "Question", "name": "Can I keep an old range or wood burner and still get the Boiler Upgrade Scheme grant?", "acceptedAnswer": { "@type": "Answer", "text": "Often yes, provided its fossil-fuel heating function is genuinely and verifiably disconnected — for example, used only as an oven or for supplementary heat, with the heating pipework and controls physically disconnected by your installer." } }, { "@type": "Question", "name": "Is there a grant that combines insulation and a heat pump for older properties?", "acceptedAnswer": { "@type": "Answer", "text": "ECO4 Flex can fund insulation alongside a heat pump and BUS grant as a single project for households that include someone on a qualifying benefit or with a relevant health condition — worth checking if you may be eligible." } } ] } ] --- [![Alliant Energy — Renewable Energy Solutions](/__l5e/assets-v1/3bd22195-cc6e-43e6-b5ff-5a808ce292d3/alliantenergyltd-2.svg)](/) [Home](/)[About](/about-us) [Services](/services) [Guides](/guides)[Case Studies](/case-study)[Book a Survey](/book-survey)[![Levelise](/__l5e/assets-v1/59fd362e-361a-47d7-ad1f-65e9beeb5289/levelise-logo.webp)](/guides/levelise-hub-explained) [01282 501589](tel:01282501589)[Get a heat pump quote →](/heat-pump-quote) ![](/__l5e/assets-v1/b1c94da8-87b2-46f5-b2de-7afd64b90c74/old-property-bus-eligibility-hero.webp) Boiler Upgrade Scheme Eligibility · North West England # Will an Old or Hard-to-Heat House Qualify for the Boiler Upgrade Scheme? Yes — there's no minimum EPC rating, insulation standard, or property age requirement to qualify for the Boiler Upgrade Scheme. Eligibility comes down to owning the property and replacing a fossil-fuel heating system; a heat-loss survey then sizes the heat pump to fit your home as it currently is, however hard it is to heat. By **Adam**· reviewed by Adam, Certified Installer Last updated 12 September 2026 [Book your heat-loss survey](/heat-pump-quote) [Request a callback](/request-callback) On this page - [Minimum EPC rating?](#epc) - [What the survey checks](#survey) - [Victorian & solid-wall homes](#victorian) - [Keeping a range or burner](#range) - [Listed or hard to insulate](#listed) - [Insulate before or after?](#order) - [FAQ](#faq) Ready to act? Free quote in one working day. [Get a Quote →](/quote) Key takeaways - Gov.uk's own eligibility guidance states plainly: "You're still eligible if you've already had funding to make your property more energy efficient" — there is no insulation prerequisite, and no published minimum EPC band, to qualify for the grant itself. - What actually varies by property is the heat pump's size and design, decided by an MCS-standard heat-loss survey — not eligibility for the grant. A poorly insulated Victorian terrace needs a bigger, carefully designed system; it isn't disqualified for being one. - One real case on r/ukheatpumps involved a Grade 2 listed house with the worst possible EPC rating (G1) — heat loss calculated at 27kW uninsulated, falling to 22kW, then 12kW, then 7kW as successive insulation measures were modelled — and the consensus was that BUS eligibility itself was never in doubt, only the practical sizing and sequencing of the work. - Retaining a secondary heat source (like an existing solid-fuel range or log burner) doesn't automatically block the grant — one homeowner kept their range as an oven only, with its heating function physically disconnected, and still qualified. - For lower-income or vulnerable households, ECO4 Flex can combine insulation, a heat pump, and the BUS grant into a single funded project — worth checking alongside a standalone BUS application. - North West housing stock leans heavily on exactly this profile — Victorian and Edwardian terraces and older semis across Lancashire, Greater Manchester, Merseyside and Cheshire — so this isn't an edge case, it's the typical property a genuinely local installer surveys every week. ## Does my house need a minimum EPC rating for the Boiler Upgrade Scheme? No. There's no published minimum EPC rating or insulation standard written into the Boiler Upgrade Scheme's eligibility rules. [Gov.uk's eligibility guidance](https://www.gov.uk/apply-boiler-upgrade-scheme/check-if-youre-eligible) confirms that a property that's already had energy-efficiency funding remains eligible, and sets no separate insulation bar to clear first. The core requirements are ownership of the property and replacing an existing fossil-fuel heating system (gas, oil, LPG or electric) with a heat pump or biomass boiler. That's a genuine surprise to a lot of homeowners with older housing stock, who assume — reasonably, given how EPC ratings are used elsewhere — that a poor rating rules them out. It doesn't. What changes for a harder-to-heat property isn't whether you qualify; it's the size and design of the system a surveyor will recommend. ## What does the heat-loss survey actually check? Every MCS-certified installer has to carry out a room-by-room heat-loss survey before designing a heat pump system, and it's this survey — not a headline EPC letter — that determines what gets installed. It calculates, room by room, how much heat escapes through walls, windows, floors, the roof and gaps, based on the property's actual current condition, then sizes the heat pump and radiators (or underfloor heating) to comfortably heat every room to the required temperature. What the survey checks What it does not require Actual room-by-room heat loss (walls, windows, floors, roof, air leakage) No fixed minimum insulation standard to pass Existing radiator sizes vs required flow temperature No requirement to have cavity or solid wall insulation already fitted Property construction type and age (solid wall vs cavity, listed status) No minimum EPC band to qualify for BUS funding itself Whether any rooms will be excluded (e.g. some bathrooms, unheated kitchens) No obligation to complete separate insulation work first, unless you choose ECO4 Flex _Source: MCS heat-pump design standard requirements, as described by installers and applicants on r/ukheatpumps, and gov.uk's Boiler Upgrade Scheme eligibility guidance._ ## Can a Victorian terrace or solid-wall house get a heat pump and the BUS grant? Yes, and it happens routinely. One of the more striking real examples came from a homeowner buying a Grade 2 listed house with an EPC rating of G1 — the lowest possible band — heated only by an oil-fired range with radiators running off it and several rooms with no heating at all. Their own heat-loss modelling, shared on r/ukheatpumps, showed just how much room-by-room insulation moves the number: Stage Modelled heat loss Measures 1 · No work 27 kW Single glazed, no insulation — starting point, as bought 2 · Basic measures 22 kW Secondary glazing, ceiling and floor insulation — reversible, listed-building friendly 3 · Airtightness 12 kW Adds MVHR and air-leak sealing — ventilation needed once sealed 4 · Full retrofit 7 kW Adds internal wall insulation — smaller, more efficient heat pump possible _Source: homeowner's own MCS-aligned heat-loss calculations, shared on r/ukheatpumps. Every property differs — this shows the pattern, not a universal figure._ Every stage in that ladder is still eligible for the Boiler Upgrade Scheme grant — what changes is simply which size of heat pump the survey recommends, and how well the system will perform. A 27kW heat-loss property can still get a heat pump and the grant; it just needs a system, and installer, capable of handling that load properly (or a decision to insulate first, discussed below). > "You can't get BUS \[without\] an MCS registered installer... Apart from a handful of exclusions (bathrooms, kitchen to an extent), you must get a heat pump and heating system capable of fully heating all rooms to 21-18°C depending on the purpose of the room. If you're going down the route of professional installation, document extensively... all of the insulation work you are undertaking that will then be hidden out of direct sight. If you don't, they will assume it doesn't exist on the heat loss survey."— comment on r/ukheatpumps, "Any advice on getting a Heat Pump on a very old property" ## Can I keep my old range or log burner and still get the grant? Often, yes — with the right paperwork. In the same real case, the homeowner planned to keep their oil-fired range purely as an oven, with a wood-burning stove supplementing heat in one room. Another poster in the same thread who'd done exactly this confirmed it worked: "the installers physically disconnected the pipes to the heating side of the Rayburn and unwired the heating side of the controller so it couldn't accidentally start up and run dry." The key requirement is that the fossil-fuel heating function is genuinely and verifiably disconnected — not simply left in place unused. ## What if my house is listed or hard to insulate? A listed building doesn't disqualify a property from the Boiler Upgrade Scheme, though listed building consent can constrain which insulation measures are practical (internal wall insulation is often more achievable than external cladding or replacing original windows). Two things are worth doing in parallel: get listed building consent guidance early if any fabric changes are planned, and ask your MCS installer to document any insulation work thoroughly — including photos taken before it's covered up — so the heat-loss survey correctly credits work that's no longer visible. If a household includes someone on a qualifying benefit or with a health condition affected by cold or damp, it's also worth checking eligibility for ECO4 Flex, which can fund insulation alongside a heat pump and BUS grant as a single combined project — a route one r/ukheatpumps poster used successfully to insulate a solid-wall 1840s house before their heat pump was even designed. ### Get a heat-loss survey built for older North West homes Alliant Energy surveys Victorian terraces, solid-wall semis and older properties across Lancashire, Greater Manchester, Merseyside and Cheshire every week. [Book your heat-loss survey](/heat-pump-quote) [Request a callback](/request-callback) ## Should I insulate before or after getting a heat pump? Practically, insulating first (or at least mapping out a realistic insulation plan) tends to produce a better result, even though it isn't a BUS eligibility requirement. Installers and experienced heat-pump owners on r/ukheatpumps were consistent on this point: fitting an oversized heat pump sized for an uninsulated home, then insulating later, risks the system short-cycling — running in inefficient on-off bursts because it's now too powerful for the reduced heat loss. The heat-loss survey can only size a system for the property as it exists on survey day, so a phased "insulate as you go" plan needs to be discussed openly with your installer, not left as a surprise for later. - **Document insulation work as you do it.** Photos of exposed insulation before it's covered protect your heat-loss survey figures and your grant claim. - **Ask whether phased insulation is realistic for your system.** A modern heat pump modulates down reasonably well, but a large gap between "now" and "after insulation" heat-loss figures increases the risk of short-cycling. - **Check ECO4 Flex if you may be eligible.** It can fund insulation and a heat pump together rather than insulating first out of your own pocket. - **Get a heat-loss survey from an installer experienced with older or listed properties.** Not every installer is comfortable quoting for a Victorian terrace or solid-wall home — ask directly about their experience with your property type before booking. From our own installer "We survey a lot of Victorian terraces and older semis across Burnley, Nelson and the surrounding towns — it's the normal housing stock round here, not a special case. The heat-loss survey just tells us what size system to design; it's never been a reason to turn someone away." — Adam, Certified Installer at Alliant Energy ## Old property Boiler Upgrade Scheme eligibility questions, answered ### Does an old or poorly insulated house qualify for the Boiler Upgrade Scheme? Yes. There's no minimum EPC rating or insulation standard in the scheme's eligibility rules — you need to own the property and be replacing a fossil-fuel heating system. A heat-loss survey then sizes the heat pump to suit your property's current condition. ### Do I need cavity wall or loft insulation before applying for the Boiler Upgrade Scheme? No. Gov.uk's guidance explicitly confirms you remain eligible even if you've already had energy-efficiency funding, and sets no separate insulation requirement to qualify for BUS itself. ### Can a listed building get a heat pump and the BUS grant? Yes, though listed building consent may affect which insulation measures are practical. The grant eligibility itself isn't affected by listed status — only the practical design of the insulation and heat pump installation. ### What does the MCS heat-loss survey check? It calculates room-by-room heat loss based on the property's actual current construction, insulation and glazing, then sizes the heat pump and emitters (radiators or underfloor heating) to heat every room adequately — it doesn't set a pass/fail insulation bar for grant eligibility. ### Can I keep an old range or wood burner and still get the Boiler Upgrade Scheme grant? Often yes, provided its fossil-fuel heating function is genuinely and verifiably disconnected — for example, used only as an oven or for supplementary heat, with the heating pipework and controls physically disconnected by your installer. ### Is there a grant that combines insulation and a heat pump for older properties? ECO4 Flex can fund insulation alongside a heat pump and BUS grant as a single project for households that include someone on a qualifying benefit or with a relevant health condition — worth checking if you may be eligible. **Methodology:** Eligibility claims are drawn directly from gov.uk's published Boiler Upgrade Scheme guidance. The heat-loss reduction figures and Grade 2 listed property example are drawn from a real, dated homeowner post and its comment thread on r/ukheatpumps discussing an actual live application; individual figures are that homeowner's own calculations, not a universal benchmark, and illustrate the pattern of how insulation stages affect heat-loss sizing. North West property type context reflects Alliant Energy's own published case studies and service area. Figures checked September 2026. Related: [Boiler Upgrade Scheme 2026](/guides/boiler-upgrade-scheme-2026) · [Is the Boiler Upgrade Scheme a scam?](/guides/is-the-boiler-upgrade-scheme-a-scam) · [Is my heat pump quote inflated?](/guides/is-my-heat-pump-quote-inflated) Three ways to get started ## Older home? It still qualifies. Book an MCS heat-loss survey with an installer who works on Victorian terraces and solid-wall homes every week. [Book your heat-loss survey → ](/heat-pump-quote) [Request a Callback →](/request-callback) [Download Brochure →](/brochure) Accreditations ## Certified, registered, and insured. Every time. MCS certification isn't a box-ticking exercise — it qualifies your system for Smart Export Guarantee payments and government grants. Our installers are also NICEIC-approved and TrustMark-registered, and every install is fully insured. ![Citation ISO Certification: ISO 9001 quality management, ISO 14001 environmental management and ISO 45001 occupational health and safety](/__l5e/assets-v1/180183cd-e6fd-4b0a-984c-83e6a41390d7/accreditations-iso.jpg) ![Alliant Energy — Renewable Energy Solutions](/assets/logo-IFrgP5Dc.png) Renewable energy & energy-saving specialists. 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