A cracked heat exchanger is labour intensive but still much cheaper than upgrading to a HE furnace. I had to have mine replaced a number of years ago and while I don't recall the exact price, it wasn't much over $1000.
Every single HVAC person I have talked to has said, in no uncertain terms, keep your current furnace as long as you can. Even strongly advised against tankless water heaters.
**edit**
Actually, it was $600 so waaaaaay cheaper than a new furnace. This is a no brainer IMO. Furthermore, I think some furnace manufacturer had a recall on heat exchangers? May get a new one for free!
Last edited by GoinAllTheWay; 11-02-2017 at 11:12 AM.
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