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Question DetailsAsked on 6/29/2017

I have a tankless gas hot water heater approximately how much should it cost to install

I have the gas hot water heater all I need is to have it installed

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In my opinion - presuming it is replacing a current water heater at basically the same location, around $600-1000 is what it SHOULD cost provided the gas line run from the outside meter is fairly short (because they commonly need larger piping to the tankless heater). Commonly takes 3-6 manhours to install this type of unit, not including the below if needed.


Perhaps commonly around $500 additional if there is not power there now (as might be the case if you have a current gas water heater) so a new circuit has to be pulled to it from the breaker panel.


And maybe $250-500 additional for typical flue modifications because likely is a high-efficiency direct-vent unit. Can be more for that if removing the existing gas water heater from a combined furnace/boiler and water heater gravity flue now makes that flue pipe too large for the remaining unit, so new gravity flue has to be installed to be right-sized for the furnace/boiler.


What you can EXPECT to pay today with a lot of HVAC firms or plumbers - probably $4000-6000 - because many HVAC contractors and plumbers quote you basically the same price to install a unit you bought as if you had bought it from them, figuring they deserve their profit from the unit sale regardless of whether you bought it through them or not.

Answered 1 year ago by LCD




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