Cracked Heat Exchanger: Symptoms and How It's Confirmed
Signs of a cracked furnace heat exchanger, how a technician confirms it with a camera and CO readings, what to do after a red tag, and repair vs replace.
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Furnace Repair in Chanhassen, MN
Furnace repair in Chanhassen starts with a $79 trip charge, waived when you approve the repair, on original 1990s and 2000s furnaces. Many 1990s and 2000s homes still run their original high-efficiency furnaces, now 20-plus years old.
Furnace repair calls in Chanhassen homes
Most Chanhassen homes went up in the 1990s and 2000s, and plenty still run the furnace the builder put in. At that age the repairs are the high-efficiency kind: a condensate trap that clogs and trips the pressure switch, an inducer motor that starts to rattle, a flame sensor that needs cleaning, a control board that loses a relay. Two-stories with a finished lower level also produce calls about a furnace that can't keep up, which often turn out to be the bonus room over the garage rather than the furnace.
In the newest neighborhoods near Highway 212, furnaces are tied to air exchangers and sometimes zoning panels, so a fault can live in the controls rather than the burner. Walkout lower levels near Lotus Lake and Lake Minnewashta usually put the furnace in an unfinished corner with good access. Keep the PVC terminations outside clear of drifting snow, since a blocked intake is an easy lockout to prevent.
Updated November 10, 2026
What do common furnace repairs cost in Chanhassen?
National averages (HomeGuide, 2026), not our prices: a flame sensor $80–$250, a pressure switch $150–$400, a limit switch $100–$375. More in the furnace repair cost guide.
Symptom guides: Blinking light codes · Pressure switch trips · Strange noises · Leaking water · Signs your furnace needs a technician
Furnace repair in Chanhassen: questions
Our Chanhassen house has a zoned system and one zone stopped heating. Is the furnace bad?
Probably not, if the other zones still heat. A dead zone usually means a damper motor that failed closed, a thermostat that lost power, or a fault at the zone control panel. We check the panel's indicator lights and test each damper before looking at the furnace. If the furnace short-cycles when only one small zone calls, the bypass or the furnace's staging may need adjusting too.
Water is pooling under the furnace in our 2000s Chanhassen home. What causes that?
A high-efficiency furnace makes water, which drains through a trap and tubing to a floor drain or condensate pump. After 15 or 20 years the trap clogs, a hose cracks or the pump's float sticks, and water backs up. Often the pressure switch trips at the same time and the furnace quits. It's usually a modest repair, but shut the furnace off if water is reaching the burner compartment or the control board.
More in Chanhassen
- Furnace replacement in Chanhassen
- AC repair in Chanhassen
- AC replacement in Chanhassen
- Heat pumps in Chanhassen
- Mini-splits in Chanhassen
- Tune-ups in Chanhassen
- All HVAC service in Chanhassen
Furnace repair near Chanhassen
- Eden Prairie, MN furnace repair · 3 mi
- Excelsior, MN furnace repair · 3 mi
- Minnetonka, MN furnace repair · 4 mi
- Shorewood, MN furnace repair · 4 mi
- Deephaven, MN furnace repair · 4 mi
- Shakopee, MN furnace repair · 4 mi
Brands we repair
Guides on furnace repair
Goodman Furnace Error Codes and Blinking Lights
Goodman and Amana furnace error codes from Goodman's own service manuals: how to read the display safely, what E0, E1, E2 and others mean, and when to call.
Read the guideHow Long Does a Furnace Replacement Take?
Most furnace replacements take one day; venting, a chimney liner, gas line or duct work can add a second. Ours run $4,500–$9,500 installed. Call 612-429-3465.
Read the guideContact Us
Heat out? AC quit? Call or send a request.