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Question DetailsAsked on 2/20/2015

What will it cost for replacement of heating and air conditioning unit with or without humidifier

Furnace and air conditioning unit very close to life span, (15 yrs ) House is about 65 years old and drafty.

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1 Answer


A couple thousand per unit to over $10,000 - depending on house size, what climate you live in, efficiency of unit you buy, brand, etc.

You said heating and air conditioning unit - basically speaking, unless using a Heat Pump, they are two different systems and do not have to be replaced at the same time - furnaces typically last 2-3 times as long as air conditioners, so replacement cycles can vary. Replacing one without the other is usually not going to significantly impact your cost, if at all. 15 years for an A/C is starting to get into the replacement zone yes, but furnaces commonly go 25-30 years without needing major rebuilds, and some (particularly older, simpler ones) twice that, so don't assume you need both unless having problems or you are shooting for a much higher (which might not be economic) efficiency.

Click on the Home > HVAC link right under your question and you can find a lot of similar questions to yours, with a lot of commentary on general ballpark costs, efficiency issues, types of systems, etc.

You said drafty - you could look at a few of the comments in Home>Insulation link in Browse Projects, at lower left, about insulation and drafts, because drafts generally are not the fault of the HVAC unit - they are insulation and weatherstripping issues, and upgrading them to virtually eliminate drafts can be FAR cheaper than replacing the HVAC unit.

Answered 5 years ago by LCD

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