about this date of 2035, which is arguably a bit late. even then there wouldn t be an outright ban on gas boilers, it would be a ban on the installation of fossil fuel heating systems. nobody needs to worry that anything will be mandated for the house, itjust means in 15 years, when you come around to making that next heating decision, it may be that your options are primarily heat pumps. angela, another question on the cost, why is the amount of the grant so low? a heat pump cost at least £20,000 to install in the ground or over £10,000 for a noisy air source heat pump when few people have that sort of money? ok, let s separate those two questions. we have tackled the noise issue, they are not that noisy. in terms of air source heat pumps, they are cheaper than ground source. air source look like air conditioning units. ground source need to have pipework into the ground.