My landlord has had to replace our boiler after years of issues. He was unwilling to do this but was forced to by environmental health. He now wants to increase our rent specifically because he has claimed that the boiler has cost him “thousands”. Bearing in mind we have gone 6 weeks with no boiler in winter and have still been paying him rent is he allowed to do this? The new boiler was delivered on Saturday the 11th and has still not been completely installed regardless of us been informed it would be finished yesterday.