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Check My Eligibility →The Boiler Upgrade Scheme (BUS) offers Westminster homeowners significant cash grants to replace fossil fuel heating systems with renewable alternatives. If your home currently uses a gas boiler, oil boiler, or LPG heating, you could receive between £7,500 and £9,000 towards the cost of a new heat pump installation.
From July 2026 to March 2027, eligible Westminster residents can apply for grants to install air source heat pumps (£7,500), ground source heat pumps (£7,500), or to upgrade from oil or LPG systems (£9,000). Opennest connects you with MCS-certified local installers like Fixerfox Ltd who can assess your property, prepare your application, and complete the work to the highest standards.
You must own the property (not rent it), have a working fossil fuel heating system (gas, oil, or LPG boiler), and the property must be in Great Britain. Your installer will confirm eligibility during the survey.
You can receive £7,500 towards an air source or ground source heat pump, or £9,000 if you're upgrading from an oil or LPG system. The grant covers part of the installation cost; you pay the remainder.
The current BUS grant window runs from July 2026 to March 2027. Applications must be submitted during this period. Check gov.uk/boiler-upgrade-scheme for any future rounds.
Yes, your installer must be MCS (Microgeneration Certification Scheme) registered to work on BUS grant applications. Fixerfox Ltd and other installers on Opennest meet this requirement.
From initial survey to installation typically takes 4–8 weeks, depending on your installer's schedule and how quickly you submit your BUS application. The scheme administrator aims to decide applications within 8 weeks.
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