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Question DetailsAsked on 4/7/2015

What is the average cost to replace a 40 gallon gas hot water heater in Houston?

I have a 40 gallon gas hot water heater that is in my attic and needs to be replaced. What should the total cost be to take out the old one and take it with them and install a new one?

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2 Answers


Hi this is Garrett K. with Angie's List. We have a deal in your area for this service. Follow this link to view that deal! Thanks!

Answered 5 years ago by garrettk


Here is a link with 100+ responses to that question -

Because you are in an attic, assuming you want to leave it there (realizing the risks involved if it ever leaks), might run an extra $100 or two to get the new one up in there and the old one out if you do not have regular stairs up to the attic so it has to go through a trap door or hatch - more like $250-500 at times if it is "landlocked" and has to be taken out through a gable vent or a hole cut in the gable wall - up to $500-1000 extra in rare cases if truly locked in and an opening in a ceiling or the roof has to be cut to get it out (and then repaired), at which point finding a new location on the lowest level for the new heater and just leaving the old one in the attic completely drained and disconnected and the piping removed from the attic (to avoid stagnation and freezing) would certainly be a good idea if feasible - or if committed to the attic, perhaps put in a viable lifting blocking and padeye in the rafters and a new hatch for future use too.

Another thing to consider if leaving it in attic - putting in an oversize containment pan under it with a LARGE drain - like 4 inch or larger - with a direct run down to the sewer (though that requires a trap and associated need to refill it with water every few months so sewer gases can't accumulate), or in most code areas the drain can be directed outside and down the outside wall to a point not over 1 foot above the ground, as an emergency drain in case it fails or you get a leak at the pipes on top. Better than a water heater pan just under the heater, if you are in a utility closet or enclosure up there, is a total floor pan over the entire utility closet to catch any water in the area - even if water is spraying against the walls from a broken pipe for instance.

Answered 5 years ago by LCD

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