Furnace Repair in Plano, TX

What I See in Plano Furnace Calls

About 80% of the furnace calls I get in Plano are one of two things: a dirty flame sensor that needs cleaning ($150-$200) or a bad ignitor that needs replacing ($200-$350). These are quick fixes that get your heat running the same day.

The tougher calls come from Willow Bend and the Spring Creek neighborhoods where many homes were built in the 1990s. Those original furnaces are now 25-30 years old, and I'm finding more cracked heat exchangers every winter. A cracked heat exchanger is a carbon monoxide risk — it's serious. Replacing just the heat exchanger runs $1,500-$2,500, but at that age, you're usually better off replacing the entire furnace rather than putting that kind of money into a system that's past its life expectancy.

On the other end, Legacy West and the newer Plano developments have furnaces that are barely broken in — maybe used 60-90 days a year in our mild winters. But here's the thing: most of these furnaces are installed in attics, and the extreme temperature cycling up there (140°F in summer, near freezing in winter) causes premature component failure even on newer equipment.

Most Plano homes run gas furnaces at 80% AFUE, which is still the federal minimum. Going to 96% AFUE cuts your gas use for heating by about 17% — that's the honest arithmetic, 1 minus 80 over 96. On a Plano winter where we only really lean on the furnace from December through February, that works out to roughly $90-$190 a year. You'll see much bigger numbers advertised; they assume a heating bill we don't have down here. The payback on a condensing furnace is long in this climate, so I'd rather tell you that up front than sell you one on a number that doesn't hold.

If your Plano furnace is over 15 years old and needs a $500+ repair, I'll be honest — it's usually smarter to replace it. You'll get better efficiency, a full warranty, and peace of mind instead of wondering what breaks next.