2019 New Boiler Installation Costs - How Much to â
2019-10-11 · The cost for replacing a standard gas boiler is about $4,000. A high-efficiency model costs about $7,500. This cost estimate usually includes removal and disposal of the old unit, as well as all necessary lines, ducts and wiring needed for the new system to run properly. Replacing an oil-fired boiler is typically a bit more expensive.