I can’t give zero! If you are a Homecare customer, BG may fix it. I am a customer who due to age of boiler pays £60pm and they can’t fix it as don’t actually stock parts. Absolute rip off service. Use at your risk, in future I’d get a contract elsewhere. As a result of this I also had hot water pouring from my boiler (in loft) damaging my property while we were in dispute about the repair. I also had an engineer arrive once and because it was a lot to do he wasn’t allowed to spend enough time onsite to fix it. He said he had to go and rebook so the time was spread over two visits 🙈😂 I’ll never use British Gas Homecare again.