ECO4 Closes 31 December 2026 · Warm Homes Plan from 2027 | 7,000+ Installations
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💰Earn £100 Per ReferralBy Peter Davies, ECO4 Analyst
Reviewed
Yes — if you live in S1–S36 and either receive Universal Credit, Pension Credit, PIP or another qualifying benefit (EPC band D–G), or your gross household income is under £31,000 through Sheffield City Council's LA Flex route, you can apply for a 100% free ECO4 boiler replacement. Sheffield is on the Cadent gas network and the council delivers referrals through Warm Homes Sheffield.
Pillar guides: Free boiler upgrade · ECO4 eligibility · LA Flex grants
S1–S36
Postcode coverage
Cadent
Gas Distribution Network
LA Flex active
Sheffield City Council
£0
Cost to qualifying households
There are two routes for Sheffield households. Pick whichever applies — you don't need both.
Per gov.uk's Energy Company Obligation page, you qualify if you receive any of:
No qualifying benefit? Sheffield City Council runs its own referral route through the LA Flex Statement of Intent.
Bottom line: If your address is in S1–S36, you claim a qualifying benefit or fall under Sheffield City Council's LA Flex criteria, and your EPC is D-G, the eligibility check is a 49-second form.
Sheffield's dwelling stock is dominated by pre-1919 stone-built terraces clustered in the hilly inner west (Walkley, Crookes, Hillsborough, Heeley, Sharrow, Nether Edge) and red-brick Victorian and Edwardian terraces along the industrial valley floors east of the city centre (Darnall, Tinsley, Attercliffe, Burngreave). A distinct second tier is the post-war and 1960s/70s system-build estates — Park Hill (now Grade II*-listed and partially refurbished), Gleadless Valley, Norfolk Park, Wybourn, Manor Top — many of which retained electric storage heaters or non-condensing combi boilers well into the 2010s. The leafy south-west (Ecclesall, Ranmoor, Dore, Totley) is largely owner-occupied stone-built villas and inter-war semis with higher EPC bands. For ECO4 the strongest scoring measures in Sheffield are A-rated condensing boiler replacements in S2/S5/S6/S9 pre-1980 terraces and First-Time Central Heating where storage heaters or back boilers are still in place on the older estates.
Total dwellings
232,000
as of 2021 Census
Private sector
195,500
owner-occupied + rented
Social housing
36,500
registered providers
Bottom line: Sheffield's mix of pre-1919 and post-war stock is exactly the catchment ECO4 targets. The mandatory PAS 2035 retrofit assessment will confirm the SAP uplift for your specific address.
Cadent is the Gas Distribution Network operator for the North-West (and much of the Midlands and East England) — that includes every S1–S36 postcode.
~10 m connection
£500–£800
50 m+ connection
£1,500–£2,500
If your property is already on the gas main — most Sheffield addresses are — there is nothing to pay. ECO4 funds the boiler, internal pipework, controls, meter installation, and safe removal of the old system.
Cadent's indicative pricing toolBottom line: Almost every Sheffield address (S1–S36) is already on the Cadent gas main, so the connection cost is £0. The rare off-main cases sit on the outer fringes and pay Cadent separately for the new connection.
You may have seen the successor scheme called "ECO5" online — there is no ECO5. The government has abolished the Energy Company Obligation model and replaced it with the Warm Homes Plan — a £15 billion programme funded by public investment rather than levies on energy bills. ECO4 still runs until 31 December 2026, so Sheffield households should apply now while the scheme is open.
Low-income grants
£4.4 bn
Warm Homes Social Housing Fund + Local Grant
Boiler Upgrade Scheme
£7,500
per household, clean-heat grant
Delivery moves from Ofgem to a new Warm Homes Agency, with the Social Housing Fund and Local Grant consolidating into a single low-income capital scheme by 2027/28.
Sources: gov.uk — Warm Homes Plan (updated 18 March 2026); Ofgem response to the Warm Homes Plan.
Bottom line: ECO4 closes 31 December 2026. The Warm Homes Plan replaces it from 2027 — apply now while the current scheme is still open and the £4,000–£8,000 install value is fully funded.
Property
Pre-1919 mid-terrace, three-bed
Existing system
EPC band F — 1990s back boiler with non-condensing replacement combi, single-glazed sash to the front
Measure installed
Boiler replaced with A-rated condensing combi + loft insulation top-up to 270mm under ECO4
Outcome
EPC uplift to band D; estimated heating bill cut of £620–£780 per year. £0 paid by the household.
Time on site
Boiler swap completed in one day; loft top-up the following morning
Illustrative — based on typical S1–S36 installs, not a single named customer.
Bottom line: Typical Sheffield installs deliver a two-band EPC uplift in a single intervention at £0 to the qualifying household. Your individual case depends on the PAS 2035 assessment, but the S5 Firth Park pattern above is representative.
Total install value typically £4,000–£8,000.
Most Sheffield addresses are already on the gas main — nothing extra to pay.
Bottom line: If your ECO4 application is approved, the install is £0 — typical install value £4,000–£8,000. The only out-of-pocket case is a brand-new gas-main connection from off-grid, which is uncommon in Sheffield.
Run our wizard or call +44 7375 868046.
A free home survey by an accredited assessor confirms the right measure for your property.
Gas Safe install, building-control sign-off, lodged on the TrustMark Data Warehouse.
Prefer to contact Sheffield City Council directly?
Installer chain verified via TrustMark and Ofgem ECO4 Delivery Guidance v4.0.
Bottom line: From the 49-second eligibility check to a commissioned boiler, a typical Sheffield ECO4 job runs five to seven weeks. The wizard above is the fastest start — or call +44 7375 868046.
Sheffield homeowners and private tenants whose property is EPC band D–G and whose household either (a) receives a qualifying benefit such as Universal Credit, Pension Credit, PIP, ESA, Income Support, Working Tax Credit or Child Tax Credit, or (b) has gross income under £31,000 and is referred via Sheffield City Council's LA Flex Route 2 declaration. A cold-sensitive health condition can substitute for the income test.
Yes. Sheffield City Council's Statement of Intent v2 (published 26 February 2024) declares Routes 1, 2 and 3 of the Ofgem LA Flex framework, using proxies 1 to 4 of Route 2 but explicitly excluding Proxy 5. Referrals are processed through Warm Homes Sheffield on 0800 107 8882.
Cadent Gas's East Midlands network operates the gas mains across all S-postcodes within Sheffield, including the western moorland fringes around Stocksbridge and Stannington. Off-mains rural pockets needing a new connection should request a quote through Cadent's indicative pricing tool — those costs sit with the householder, not the ECO4 grant.
For a typical S2/S5/S6/S7 pre-1919 mid-terrace replacing a back boiler with a modern A-rated condensing combi, expect a one-day install once the survey, EPC assessment and benefits/LA Flex check are complete. From first contact to install is usually 4 to 6 weeks, subject to surveyor availability.
Often yes, subject to a survey. Sheffield's larger 1960s/70s system-build blocks frequently still have electric storage heaters or older non-condensing combis, which makes them strong candidates for ECO4 First-Time Central Heating or boiler replacement — provided the property is EPC D–G and the household meets the benefits or LA Flex route. Some leasehold flats also need freeholder consent before measures can be installed.
Warm Homes Sheffield is the council's signposting and LA Flex declaration service — they refer eligible households to onboarded installers but do not deliver installs themselves. You can also approach an Ofgem-recognised ECO4 broker like Free Boiler Upgrade UK directly; if you qualify on benefits the council referral isn't required, and if you're on the LA Flex route we'll request the council declaration on your behalf.
ECO4 closes 31 December 2026. After that, the £15 billion Warm Homes Plan takes over from April 2027 — funded by public investment rather than energy-bill levies, and delivered by the new Warm Homes Agency rather than Ofgem (gov.uk Warm Homes Plan, updated 18 March 2026). You may have seen the successor scheme called 'ECO5' online — that name is not used by government and no scheme by that title exists. For Sheffield households, the practical effect is straightforward: if you apply under ECO4 before the 31 December 2026 close, the install is funded under ECO4 even if the engineer's visit happens in early 2027; if you start a fresh application after 1 January 2027, you'll be routed through the Warm Homes Local Grant (WHLG), the Warm Homes Social Housing Fund, or the £7,500 Boiler Upgrade Scheme depending on your tenure and property. Your local council's energy team continues to handle the referral throughout the transition.
gov.uk — Energy Company Obligation (ECO4)
Qualifying benefits and EPC band rules
Ofgem — ECO4 Delivery Guidance v4.0 (March 2026)
Scheme closure 31 December 2026, measure rules
gov.uk — Warm Homes Plan
£15bn ECO4 successor scheme, updated 18 March 2026
Sheffield City Council — Energy Company Obligations (ECO4) page
last updated 2024-02-26
Sheffield City Council — ECO Flexible Eligibility Statement of Intent
LA Flex thresholds and vulnerability criteria
Cadent — new gas connection page
GDN-side connection-cost guidance
ONS Census 2021 + Sheffield City Council Housing Strategy 2024–2034 evidence base
Dwelling counts for Sheffield (2021 Census)
Sheffield City Council — Census 2021 evidence base
Regional EPC band distribution
Page reviewed: .
49-second form. No commitment. No cost. S1–S36 households on Universal Credit, Pension Credit, PIP, ESA, JSA, Income Support, Housing Benefit or Child Benefit — start here. Apply under ECO4 now (closes 31 December 2026); the Warm Homes Plan (sometimes searched as "ECO5") replaces it from April 2027.
