A homeowner called after their furnace kept cutting on and off and the house never reached the set temperature. With rainy, chilly nights already here, they were worried about both comfort and safety as the unit got older.
1. What the Homeowner Was Experiencing Before the Call
- Furnace short cycled, running for a minute or two then shutting off repeatedly
- Thermostat setpoint not being reached across multiple rooms
- Unusual sounds during startup and a slight odor when the burner ran
- Unit is about 14 years old and had not been replaced or fully inspected recently
Short cycling and inconsistent heating are especially frustrating during Snohomish and King County winters when homes need steady, reliable heat. Besides comfort, these symptoms can point to problems that reduce efficiency and, in older gas furnaces, create safety concerns that should be addressed quickly by a professional.
2. What Our Inspection Revealed on the Unit
- Visual inspection showed a crack in the heat exchanger on the 14-year-old gas furnace
- The unit was indeed short cycling, and flame behavior suggested combustion instability
- Combustion and ventilation checks indicated potential for combustion gases to leak where they should not
- Overall system wear consistent with age and lack of recent major repairs
A cracked heat exchanger is a serious finding because it can let combustion gases, including carbon monoxide, mix with the air circulated through the home. That is why a professional diagnosis matters: only trained technicians can safely confirm the source of symptoms, measure combustion gases, and explain the real options based on the unit condition and local winter needs.
3. What We Did to Secure the Home and Plan Next Steps
- Performed immediate safety measures to limit operation until a full decision could be made
- Conducted combustion gas checks and documented the heat exchanger damage
- Discussed repair versus replacement options with the homeowner, considering age and safety
- Scheduled a follow-up visit for a full assessment and to review replacement options if needed
Professional service in situations like this focuses on safety first, then on clear recommendations. That means temporarily securing the system, verifying hazards with proper testing, and helping the homeowner choose the best long term path for a dependable heating system during our wet Washington winters.
Stay Warm with Altitude Heating and Cooling
If your furnace is short cycling, not keeping your home warm, or you suspect an older unit may be unsafe, call Altitude Heating and Cooling. We’ll make safety our first priority and help you decide what’s best for your home. Reach us at (425) 201-1998 or altitudeheating.com.
