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Carbon Monoxide Alarm Going Off
CO alarm sounding in a Utah home: get outside, call 911, and have fuel-burning appliances inspected. Facts from CDC and EPA.
Safe things to check
- Get everyone, including pets, outside to fresh air right away.
- Call 911. If anyone has headache, dizziness, nausea, confusion or chest pain, tell the dispatcher you suspect CO poisoning. (Source: U.S. Environmental Protection Agency; U.S. Centers for Disease Control and Prevention)
- Do not go back inside until emergency responders say it is safe.
Stop here
Carbon monoxide is odorless and colorless. Gas and oil furnaces can produce it. Common symptoms are headache, dizziness, weakness, upset stomach, vomiting, chest pain and confusion, often described as flu-like. The CDC says to have the heating system serviced by a qualified technician every year. (Source: U.S. Centers for Disease Control and Prevention)
What a technician checks
The EPA recommends having fuel-burning appliances, including furnaces and gas water heaters, inspected by a trained professional at the start of every heating season, and checking that flues and chimneys are connected and not blocked. (Source: U.S. Environmental Protection Agency) The EPA also recommends a CO alarm on every level of the home, tested monthly. (Source: U.S. Environmental Protection Agency)
Typical cost
Do not delay an inspection over cost. A furnace that set off a CO alarm should not be used until it has been inspected. National figures; not a quote.
Refrigerate LLC in Lindon has HVAC-certified technicians and reviews every request. Prefer to talk? Call or text (801) 899-2171.
FAQ
Can I fix this myself?
Only the simple checks listed above. Gas, refrigerant and electrical work needs a trained HVAC technician.
Can this site tell me what is wrong with my furnace or AC?
No. Utah HVAC Help is general information, not a diagnosis. Gas, refrigerant and high-voltage electrical parts need a trained HVAC technician. If you smell gas or a CO alarm sounds, leave the building and call 911 and your gas company from outside.
Sources
- Carbon Monoxide (CO) Poisoning Basics, U.S. Centers for Disease Control and Prevention
- Protect Your Family and Yourself from Carbon Monoxide Poisoning, U.S. Environmental Protection Agency
- Carbon Monoxide Poisoning: Protect Your Family and Yourself (fact sheet), U.S. Environmental Protection Agency
Last checked October 27, 2026. Prices and rules change; confirm with the source before you rely on them.