Switching from LPG to a heat pump
Figures updated 15 November 2026
At 60p a litre, LPG delivers heat for 10.1p per kWh, against 9.5p for a heat pump on the energy price cap. For a detached house in Llandeilo, Carmarthenshire, a heat pump would save £60 a year and cost £3,826 after the grant.
Includes a £9,000 Boiler Upgrade Scheme (off-gas oil or LPG) grant. England and Wales only, for applications made by 31 March 2027. You must own the property (homeowners, landlords and small businesses can apply), be replacing oil or LPG heating, have no mains gas connection, and use an MCS-certified installer, who applies for the grant. GOV.UK
Median heat demand for a detached house (DESNZ). The LPG price is our starting figure, as there is no current published average: enter the price on your bill in the calculator below. About 260 thousand homes in England and Wales heat with LPG only (Census 2021).
Your LPG contract
By law a home bulk LPG contract can't tie you to one supplier for more than 24 months, and the notice to end it can't be longer than 42 days. CMA order
The supplier owns the tank. The rule that stops a supplier charging to take its tank away only covers switching to another LPG supplier, not leaving LPG altogether. CMA order
What leaving costs
Flogas charges £550 plus VAT to remove an above-ground tank and £1,520 plus VAT for one underground, when you leave LPG. Its standing charge carries on until the tank is gone. It buys back usable gas left in the tank at half the price you last paid, set against what you owe. Flogas terms
Calor asks for removal requests in writing and says charges may apply depending on your contract. It doesn't publish a fee. Calor
Give notice so the contract ends around the time the heat pump goes in, and ask your supplier for the removal date in writing.