
I’m in the UK, short-term cheaper alternative is keeping your existing gas boiler until it breaks down… so roughly 20-30 years. The government gives £7,500 towards a heat pump but that has resulted in prices staying artificially high and virtually every install for a 3-4 bed home comes in at £10,000. A new gas boiler is around £1,500-£2,000. Due to some other short sightedness, any heat pump which also cools is not eligible for the £7,500 grant, which is really problematic when temperatures keep rising.
I’m not sure this did change, at least I can’t find any reference to it, other than a potential proposal.