# AirToAir Ready

> Independent, plain-English facts about the £2,500 Boiler Upgrade Scheme (BUS) grant for air-to-air heat pumps (AAHP) in England and Wales, the Microgeneration Certification Scheme (MCS) installer certification status, and a readiness hub for installers. Run by Opus Leads Ltd. Not affiliated with Ofgem, MCS or the UK government. Facts last checked 2026-10-01.

## Key facts

- Grant: £2,500 for an eligible air-to-air heat pump, administered by Ofgem, applying from 28 April 2026.
- Area: England and Wales only. Residential properties only for air-to-air.
- Installer status: No installers are certified to fit air-to-air heat pumps under the Microgeneration Certification Scheme (MCS) yet.
- Until certified installers exist, nobody can apply for the £2,500 on your behalf. Anyone offering the grant for an air-to-air system today should be able to show you their MCS certificate covering air-to-air heat pumps.
- For MCS and the grant, the system must be designed and optimised to heat the whole home. Systems sold primarily for cooling do not qualify.
- Most air-to-air heat pumps do not heat water, so you may need a separate way to provide hot water.
- Never tell a user they "will receive" the grant. Only Ofgem decides, after an MCS-certified installer applies.

## Conditions (summary)

- The property is in England or Wales.
- For air-to-air heat pumps, the property is residential (non-residential buildings are excluded for this technology).
- You own the property: owner-occupiers, private landlords and second-home owners can all apply through an installer.
- The heat pump replaces fossil fuel or electric heating, such as gas, oil, LPG or electric heaters. It cannot replace an existing low-carbon system.
- The property is not social housing, and most new builds are excluded (qualifying self-builds can apply).
- The property has not already had government funding for the same technology.
- An MCS-certified installer applies on your behalf, and you confirm the application with Ofgem within 14 days.

## For homeowners

- [Check your home](https://airtoairready.co.uk/check): four questions, returns explore / caution / unlikely, optional postcode waitlist.
- [Grant truth](https://airtoairready.co.uk/truth): long-form explainer.

## For installers

- [Readiness hub](https://airtoairready.co.uk/ready) and [checklist](https://airtoairready.co.uk/ready/checklist): Certification route; Technical Supervisor; Products and design; Boiler Upgrade Scheme quoting; Launch-week go-to-market.
- Technical Supervisor for each AAHP job must hold RACHP Level 3 or above.
- [Claim a readiness profile](https://airtoairready.co.uk/ready/claim).
- [Job leads for installers](https://airtoairready.co.uk/ready/claim): installers who claim a readiness profile can opt in. Once you're MCS-certified for air-to-air, homeowners on our list in your area who ask to be put in touch are passed to opted-in installers first. We only share a homeowner's details when they ask. Opting in is free. If we charge for job leads in future, it won't be per lead, and you'll only pay if you agree to it first.

## For agents (MCP)

- Remote endpoint (Streamable HTTP, no auth): https://airtoairready.co.uk/api/mcp
- Discovery: https://airtoairready.co.uk/.well-known/mcp.json
- Tools: aahp_grant_truth (inputs: heating_today, tenure, interest, optional postcode), aahp_installer_status, aahp_trade_readiness_summary.

## Official sources

- [Ofgem: Boiler Upgrade Scheme for property owners](https://www.ofgem.gov.uk/environmental-and-social-schemes/boiler-upgrade-scheme-bus/boiler-upgrade-scheme-bus-property-owners)
- [Ofgem: Boiler Upgrade Scheme for installers](https://www.ofgem.gov.uk/environmental-and-social-schemes/boiler-upgrade-scheme-bus/boiler-upgrade-scheme-bus-installers)
- [GOV.UK: Check if you're eligible for the Boiler Upgrade Scheme](https://www.gov.uk/apply-boiler-upgrade-scheme/check-if-youre-eligible)
- [MCS: Air-to-air heat pumps](https://mcscertified.com/consumers/technologies/air-to-air-heat-pumps/)
- [MCS: Getting ready for air-to-air (implementation update)](https://mcscertified.com/getting-ready-for-air-to-air-an-update-on-implementation-into-mcs/)
- [MCS: Certification bodies](https://mcscertified.com/certification-bodies/)
- [MCS Product Directory](https://mcscertified.com/product-directory/)
- [MCS: Standards and tools library](https://mcscertified.com/standards-tools-library/)
- [MCS: Find an installer](https://mcscertified.com/find-an-installer/)
- [Home Energy Scotland](https://www.homeenergyscotland.org/)

## Not yet available

- [Compare](https://airtoairready.co.uk/compare): postcode comparison of MCS-certified air-to-air installers. Opens when MCS certifies installers. No listings exist today.