A hydronic (water-based) heat pump-based central heating system works in a very similar way ... A new boiler will cost between £500 and £3,000, or up to £4,500 including installation. The average cost ...
Your 30kw combi boiler, by comparison, should cost £2.06 to run your central heating for one hour, assuming you are paying 6.24p per/kWh for gas at price-capped rates and your boiler is 90 per ...