Home Last updated: 29 October 2026
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Written and fact-checked by Jacob Whitmore · Published 29 Oct 2026 · How we work

The short version

  • Installers reported a median of £12,826 for an air-to-water heat pump install under the Boiler Upgrade Scheme in July to September 2026, before the grant. That is £5,326 after the standard £7,500 grant. (DESNZ, published 29 October 2026.)
  • The median advertised starting price from the installers we checked on 29 October 2026 was £4,486 after the grant (three "from" prices). Octopus publishes a typical post-survey price of £4,064.
  • Before the grant, the four advertised prices have a median of £11,793, which is £1,033 (8.1%) below the reported median. All four sit inside the middle half of what installers reported.
  • The cheapest starting price leaves out the most. EDF's £4,100 assumes you reuse your hot water cylinder and need no radiator upgrades, a spec gap score of 2 of 7. Aira's £7,150 includes a cylinder and two radiators.

This tracker records what UK heat pump installers advertise an install for, before and after the Boiler Upgrade Scheme grant, and counts what each headline price leaves out. It is desk research: we read each installer's public price page, kept a screenshot, and set the figures against the government's own record of what installers reported. We did not request quotes or visit homes. This page carries no affiliate links or quote form. It recommends no installer.

Capture 1: 29 October 2026. Four installers priced, two checked but not priced. The government comparison is the DESNZ Boiler Upgrade Scheme statistics release for September 2026, published the same day. Next capture: 26 November 2026.

Prices and specs last checked by Look Into on 29 October 2026 · next check 26 November 2026 · how we picked

Advertised heat pump prices on 29 October 2026

Sorted from the lowest price after the grant. "From" means the lowest price the installer advertises for its smallest standard job. "Typical" is a median of real quotes the installer has issued. Where a page states only one of the two prices, we add or subtract the £7,500 grant and mark the result as derived.

InstallerPrice typeAfter grantBefore grantSpec gap score
Octopus EnergyTypical£4,064£11,564 (derived)0 of 7
EDFFrom£4,100£11,600 (stated)2 of 7
E.ON NextFrom£4,486£11,986 (derived)0 of 7
AiraFrom£7,150£14,650 (derived)0 of 7
Table 1. Advertised air source heat pump install prices, read on 29 October 2026. Grant assumed: £7,500. Source: each installer's own page, linked.

The median of the three "from" prices is £4,486 (£4,100, £4,486 and £7,150, middle value). We do not mix Octopus's typical price into that median, because a median of finished quotes and a starting price measure different things. It is shown alongside instead.

Worked arithmetic for the prices before the grant: EDF states both, £11,600 less £7,500 is £4,100. Octopus £4,064 plus £7,500 is £11,564. E.ON Next £4,486 plus £7,500 is £11,986. Aira £7,150 plus £7,500 is £14,650. The median of those four is the average of the middle two, (£11,600 + £11,986) ÷ 2 = £11,793.

One stated-figure note. Octopus's page body gives £4,064, with the quote window it was measured over. The same page's search description says "around £4,460". We use the body figure because it carries its dates.

What each headline price leaves out: the spec gap score

Headline prices are not comparable as they stand, because each assumes a different job. So we fix one reference install, an air-to-water heat pump replacing a gas boiler in a three-bed home, with seven items. For each price we mark every item as included, excluded or not stated, using only what the installer's page says. The spec gap score is the number of items marked excluded. Items that are not stated are listed but never counted: we score what the page says, not what we suspect.

The seven reference items are the outdoor unit, a new hot water cylinder, at least one radiator upgrade, pipework and any buffer, controls and electrics, MCS commissioning with the grant application, and removal of the old boiler. All four prices include the outdoor unit, so that column is left out of the table below.

InstallerCylinderRadiatorsPipeworkControlsGrantOld boilerScore of 7
Octopus EnergyNot statedNot statedIncludedIncludedIncludedNot stated0
EDFExcludedExcludedNot statedNot statedIncludedNot stated2
E.ON NextIncludedIncludedNot statedNot statedNot statedNot stated0
AiraIncludedIncludedIncludedNot statedIncludedNot stated0
Table 2. Spec gap score per advertised price, 29 October 2026.

EDF is the only installer whose price says it leaves something out, and it is also the lowest "from" price. Its page states that the £4,100 "assumes reuse of a suitable existing hot water cylinder", that homes needing a new cylinder will pay more, and that the price requires no radiator upgrades. Aira's £7,150 is £3,050 higher and states a cylinder and two radiator upgrades are included. E.ON Next says its typical three-bed figure includes the hot water tank and radiators. None of the four pages says whether removing the old boiler is in the price.

A score of 2 is not a criticism of EDF. Its page says exactly what the price assumes, which is why it can be scored at all. The score tells you which questions to ask when the quote arrives.

Advertised prices against what installers reported

Every install paid under the Boiler Upgrade Scheme needs an MCS certificate, and installers record the cost on it. DESNZ publishes the median, lower quartile and upper quartile each quarter. For July to September 2026 the median for an air-to-water heat pump was £12,826, the lower quartile £10,717 and the upper quartile £15,461, with a median capacity of 8kW. A year earlier, July to September 2025, the median was £13,000, so it is down £174, or 1.3%.

DESNZ notes that these costs are self-reported, include VAT and labour, and "should also include the grant value, but this may be subject to interpretation by different installers". They also exclude the top and bottom 10% of reported costs.

Median reported cost of an air-to-water heat pump install under the Boiler Upgrade Scheme, by quarter, 2022 to 2026, with the interquartile range shaded, and the median advertised price before the grant on 29 October 2026 £9k£11k£13k£15k£17kAdvertised29 Oct: £11,793ReportedQ3: £12,8262022 Q22023 Q22024 Q22025 Q22026 Q3Middle half of reported installs (lower to upper quartile)Median reported cost
Chart. Median reported cost of an air-to-water heat pump install under the Boiler Upgrade Scheme, England and Wales, by quarter, with the middle half of installs shaded. Orange dot: median of the four advertised prices before the grant on 29 October 2026. Source: DESNZ BUS statistics September 2026, table Q1.1A (nominal pounds); Look Into capture.

The gap is £12,826 less £11,793, which is £1,033, or 8.1% of the reported median. All four advertised prices before the grant sit between the lower and upper quartile, from £11,564 to £14,650. In other words, the advertised prices are not outliers. Three of the four sit below the reported median, and Aira's sits above it.

QuarterMedianLower quartileUpper quartile
2026 Q3£12,826£10,717£15,461
2026 Q2£12,900£11,125£15,636
2026 Q1£13,103£11,348£15,789
2025 Q4£13,437£11,459£16,030
2025 Q3£13,000£10,863£15,580
2025 Q2£12,500£10,029£15,246
2025 Q1£12,082£9,835£15,000
2024 Q4£12,500£10,177£15,199
2024 Q3£12,599£10,313£15,300
2024 Q2£12,800£10,385£15,500
2024 Q1£13,000£10,731£15,778
2023 Q4£13,600£11,200£16,170
2023 Q3£13,495£11,190£15,995
2023 Q2£13,400£11,056£15,940
2023 Q1£13,256£10,880£15,800
2022 Q4£12,969£10,794£15,132
2022 Q3£12,860£10,976£15,000
2022 Q2£13,182£10,913£15,205
Table 3. Median, lower quartile and upper quartile reported cost of an air-to-water heat pump install under the Boiler Upgrade Scheme, England and Wales, nominal pounds, newest first. Source: DESNZ, Boiler Upgrade Scheme statistics September 2026, table Q1.1A.

Installers checked but not in the median

  • British Gas. Its heat pump page shows a representative finance example with a cash price of £6,699 over 120 months at 9.9% APR. The page does not say whether that cash price is before or after the grant, so we cannot place it in either column. Recorded, not counted.
  • OVO. Its heat pump cost guide gives no OVO price. It quotes the Energy Saving Trust's estimate of around £14,000 before the grant. Recorded as no price.

Other national installers will be checked at the next capture and added only if they show a price without a postcode, email address or phone number.

What this means for your quote

  • Ask for the cylinder and radiator lines in writing. They are the two items the cheapest starting price leaves out.
  • Compare your quote before the grant with the reported median of £12,826 and the middle-half range of £10,717 to £15,461. A quote above £15,461 is dearer than three in four installs reported to the scheme in July to September 2026.
  • Check which grant applies. The standard grant in England and Wales is £7,500. Homes replacing oil or LPG heating may get £9,000 from 21 July 2026, which E.ON Next expects to run until March 2027. Scotland has its own Home Energy Scotland grant and loan.
  • Running costs are a separate question. The heat pump flow temperature cost index and the heat pump versus gas boiler cost page work those out at the current price cap.

How we worked this out

  • The basket. National installers that show a heat pump price on a public page, readable without entering a postcode, email address or phone number. Fixed at this capture. A new installer joins only at a later capture and is excluded from month-on-month change until it has two captures.
  • The capture. On 29 October 2026 we opened each page in a browser, read the price text from the page itself, and kept a screenshot. We record the headline exactly as written, whether it is a starting or typical price, which grant it assumes, and the small print.
  • The government comparison. DESNZ Boiler Upgrade Scheme statistics, September 2026 release, published 29 October 2026, table Q1.1A, row "Air-to-Water Heat Pump". Cost figures are updated quarterly, in January, April, July and October.
  • Missing data. A page with no price, or a price behind a form, keeps its row with that status and is left out of the median. Nothing is carried forward or filled in. A missed month is shown as a gap.
  • Revisions. Captures are never edited. A correction is added as a new, dated entry in the change log below.
  • Cadence. Monthly, on the day DESNZ publishes its Boiler Upgrade Scheme statistics, usually the last Thursday of the month. Extra captures run within seven days of any grant change.

What this tracker cannot tell you

  • These are advertised prices, not prices anyone paid. Most installers price after a survey, so a starting price may rarely be the price you are quoted.
  • We cannot see individual quotes, regional price differences, or any price that sits behind a quote form.
  • The spec gap score only counts what each page states. An item marked not stated may well be included.
  • The government figures are self-reported by installers, cover England and Wales only, and cover only installs paid under the grant.
  • With four installers priced, one change can move the median a long way. We always give the count with the figure.

Change log

DateChange
29 October 2026Capture 1 published. Four installers priced (Octopus Energy, EDF, E.ON Next, Aira), two checked but not priced (British Gas, OVO). DESNZ comparison from the September 2026 release.
Captures and changes, newest first.

Frequently asked questions

How much does an air source heat pump cost to install in the UK in October 2026?
Installers reported a median of £12,826 for an air-to-water heat pump installed under the Boiler Upgrade Scheme in July to September 2026, before the grant, in DESNZ statistics published on 29 October 2026. Take off the standard £7,500 grant and that is £5,326. The median advertised starting price from the installers we checked on 29 October 2026 was £4,486 after the grant.

Why are advertised heat pump prices lower than what people pay?
Starting prices assume a particular job. The lowest one we found, EDF's £4,100, assumes your existing hot water cylinder can be reused and that no radiators need upgrading. Across the four installers with a price, the median price before the grant was £1,033 below the median installers reported to the scheme.

What is the spec gap score?
It is a count Look Into uses in this tracker. We fix a reference install of seven items, from the outdoor unit to removing the old boiler, and count how many of them an advertised price says it leaves out. Items the page does not mention are reported separately and are not counted.

How often is this tracker updated?
Monthly, on the day DESNZ publishes its Boiler Upgrade Scheme statistics, which is usually the last Thursday of the month. The next capture is due on 26 November 2026. Earlier captures are never edited.

Sources

Popular guides

lookinto.co.uk publishes dated UK household cost research: what things cost to buy, install and run across home energy, mobility, later-life care and home improvement. The only quote form on the site is for stairlifts and home lifts. Every index states its method, capture date and sources on the page it appears on.