14883 E Hinsdale Ave, Unit H Centennial, CO 80112

Hytek Air Systems based in Centennial, CO

How Much Does Furnace Repair Cost in Denver? (2026 Prices)

Real pricing from Hytek Air Systems, based in Centennial, CO. These are actual 2026 numbers — not national averages. What you pay depends on what failed, your furnace age, and parts availability.

Flat-Rate Diagnostic: $89–$129Same-Day ServiceLicensed & Insured
✆ (303) 627-3395Schedule Online

Furnace Repair Cost by Type (Denver, 2026)

Repair Type Parts Labor Total Estimate
Ignitor replacement $30–$80 $80–$120 $110–$200
Flame sensor cleaning/replace $10–$40 $80–$100 $90–$140
Pressure switch $30–$100 $80–$120 $110–$220
Blower motor replacement $200–$600 $150–$250 $350–$850
Control board replacement $200–$600 $150–$300 $350–$900
Gas valve replacement $150–$400 $150–$250 $300–$650
Draft inducer motor $200–$500 $150–$250 $350–$750
Heat exchanger replacement $500–$1,500+ $300–$600 $800–$2,100+
Capacitor replacement $20–$80 $80–$100 $100–$180

The 5,000 Rule — Repair or Replace?

Multiply your furnace’s age in years by the cost of the repair. If the result is under $5,000, repair usually makes sense. Over $5,000, replacement is often smarter.

Examples

  • 8-year-old furnace × $400 repair = $3,200 → Repair it
  • 14-year-old furnace × $450 repair = $6,300 → Consider replacing
  • 18-year-old furnace × $900 control board = $16,200 → Replace
  • 6-year-old furnace × $750 blower = $4,500 → Likely repair, get inspection

Always Replace (No Matter the Math)

  • Cracked heat exchanger — Carbon monoxide risk. Non-negotiable replacement.
  • Repair cost > 50% of new unit — You’re investing in aging equipment
  • Furnace is 20+ years old — Parts availability declining, efficiency badly degraded
  • Multiple failures in one season — Pattern failure, not isolated incident

Frequently Asked Questions

Why does my furnace keep shutting off?

Most common causes: dirty air filter (check this first — free fix), flame sensor needs cleaning, pressure switch failure, or overheating from restricted airflow.

Is a 15-year-old furnace worth repairing?

Depends on what’s wrong. A $150 ignitor on a 15-year-old furnace is probably fine. A $800 control board puts that at $12,000 on the 5,000 Rule — suggests replacement.

Do you charge for the service call if I decide not to repair?

The diagnostic fee covers the visit and assessment. If you proceed with repair, it’s credited toward the total. If not, you owe the diagnostic fee only.

Book a Furnace Diagnosis

Same-day service available. We’ll tell you what’s wrong and give you straight options.

✆ (303) 627-3395Schedule Online

$88 Furnace
Clean & Check 🔥

New customers: get your furnace cleaned and checked for before the first cold snap. When it gets cold, everybody calls at once. Grab a spot now while the schedule is open.

Claim The $88 Special
FAMILY-OWNED IN Centennial Since 2004