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Emergency Issue

Carbon Monoxide Concerns

Signs of possible carbon monoxide from your heating system

Safety Warning

This issue may require immediate professional attention. If you smell gas or suspect carbon monoxide, evacuate immediately and call 911.

Signs You Have This Problem

CO detector alarm sounding
Yellow or flickering pilot light (should be blue)
Soot buildup around furnace
Condensation on windows when furnace runs
Family members experiencing headaches or nausea

What Causes This Problem

1
Cracked heat exchanger
2
Blocked or damaged flue/venting
3
Improper combustion
4
Backdrafting
5
Furnace malfunction

What You Can Check First

Before calling for service, try these simple troubleshooting steps:

1

If CO alarm sounds, evacuate immediately and call 911

2

Never ignore CO symptoms

3

Check that flue/chimney isn't blocked

4

Ensure CO detectors are working and current

When to Call a Professional

ANY carbon monoxide concern is an emergency. If you suspect CO, evacuate first, then call your gas company and an HVAC professional.

Carbon Monoxide Concerns FAQs

Headache, dizziness, weakness, nausea, confusion, and chest pain. If multiple family members feel sick, suspect CO and evacuate immediately.

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