The next Prime Minister will inherit a climate target that bites hardest where households live: the energy bill. Andy Burnham, the Greater Manchester mayor now seen as a contender for Labour leadership, has built a reputation on green infrastructure, but his record on home energy efficiency is mixed, and the stakes for UK homeowners are rising fast.
As reported by The Guardian, the question “How green is Andy Burnham?” is not academic. It will determine whether millions of households face compulsory heat pump installations by 2035, or whether the state underwrites the cost of upgrading Britain’s draughtiest homes. The difference between ambition and delivery is measured in pounds, not promises.
Who qualifies, and who doesn’t
Burnham’s record in Greater Manchester offers a preview. His “retrofit revolution” aimed to insulate 30,000 homes by 2024. The actual number is closer to 6,000. That gap matters because the next government’s EPC targets, likely C by 2030 for rented homes, and possibly for owner-occupiers, will require similar scale. Ofgem data shows the average 3-bed semi needs about £8,000 in insulation and draught-proofing to move from EPC D to C. Without a national programme, that cost falls on the household.
The Great British Insulation Scheme closed on 31 March 2026. It funded insulation measures only and never covered windows or glazing. For the 60% of UK homes built before 1980, the gap between grant and reality is wide.
What it costs a typical 3-bed semi
Heat pumps are the centrepiece of Burnham’s green vision. The Boiler Upgrade Scheme offers £7,500 off installation, but the total cost for a typical 3-bed semi in Manchester is around £12,000 to £15,000. That leaves a household paying £4,500 to £7,500 upfront. The Energy Saving Trust estimates a well-installed heat pump can cut heating bills by 20-30% compared to a gas boiler, but only if the home is well insulated first. For a household using 12,000 kWh of gas per year, that saving is roughly £150 to £250 annually, a payback period of 18 to 30 years on the upfront cost alone.
Yet the alternative is worse. Gas boilers will be banned in new homes from 2025, and the phase-out for existing homes is likely by 2035. Homeowners who delay risk a fire-sale market where uninsulated, gas-heated homes sell at a discount.
What this misses, the installer bottleneck
Burnham’s plans assume a workforce that doesn’t yet exist. The UK has about 3,000 certified heat pump installers. To meet the government’s target of 600,000 installations per year by 2028, that number needs to triple. The Guardian analysis notes that training schemes are underfunded and slow. For a homeowner in Stockport or Salford, the practical question is not whether to get a heat pump, but whether any installer will quote within six months.
The same bottleneck applies to insulation. Cavity wall insulation takes a trained crew of two about two days. Loft insulation is quicker. But the supply chain for mineral wool and rigid foam boards has been erratic since 2022. The price of polyurethane board has risen 40% in two years.
What homeowners should do now
The next election is likely within 18 months. Burnham’s green agenda, if he becomes PM, will accelerate the timeline. Homeowners on standard variable tariffs should act before policy uncertainty becomes policy mandate. Get an EPC assessment now, it costs £60 to £120. Identify the cheapest upgrades: loft insulation (£500-£1,000), draught-proofing (£200-£500), and smart thermostats (£100-£300). These pay back within three years.
For those considering a heat pump, apply for the Boiler Upgrade Scheme now, eligibility closes on 31 March 2028, but installer slots are already tight. The Energy Saving Trust recommends getting at least three quotes and checking MCS certification.
Burnham’s green record is a work in progress. But for UK homeowners, the work cannot wait.
Frequently Asked Questions
No mandate exists yet, but the phase-out of gas boilers by 2035 is government policy. Burnham supports this timeline, so homeowners should plan for a heat pump or alternative low-carbon heating within the next decade.
Loft insulation (typically £500-£1,000) and draught-proofing (£200-£500) are the most cost-effective upgrades. They can improve an EPC rating from D to C and reduce heating bills by 10-20%.
