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Question DetailsAsked on 7/8/2013

What price range should I expect to replace an oil-fired steam boiler for a 1900 sf house in the greater Boston area?

Our ancient oil-fired steam boiler needs to completely replaced. The system has two extensions added which accomodate the forced hot water system used to heat two additions added onto the house. Thank you!

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1 Answer


A new oil-fired steam boiler runs about $2500-5000 purchase cost. Since you say you have a steam boiler and two forced hot water (baseboard) extensions, you will have to decide if you are staying with that system, or going to all steam or all baseboard heating. That could affect your price substantially.

The normal installation cost can run from $500 for the simplest, easiest installation of basically identical sized units (not your case) to as much as $5,000 where a lot of modifications to piping and addition of modern code-required safety equipment, expansion tanks, etc are needed - you are likely closer to the top than bottom end.

Since you say yours is ancient, I would guess your installation cost (with incidental parts) will probably be over $2000 and maybe clsoer to $3000, for a total installed cost of from $4500-8000 depending on how energy-efficient a unit you go for. Most likely in the $5-7000 range in your case.

If it is asbestos insulated, then additional $1000-2000 (usually closer to $1200), and usually that would have to be removed before the plumber will touch it - they will inform you when they give you your bids.

Since your system is complex, you first need an evaluation by the couple of plumbers you choose to get quotes from of what the best solution is, THEN get bids from all of them based on the same solution (i.e. new furnace only keeping the existing basebaord system, go all steam, go all basebaord heat, etc). Of course, if you replace existing baseboard or steam system to make it all the same, that is going to add thousands to the cost - most likely $5K +. Getting rid of the two-system configuarion would help when it comes time to sell the house, but you would never recover all the cost.

Answered 6 years ago by LCD

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