Carbon Monoxide Safety Check
Combustion and CO testing, heat exchanger inspection and venting check.
About This Service
What's Included
- Ignition, flame sensor and burner operation
- Blower motor, capacitor and belt
- Heat exchanger visual inspection and carbon monoxide test
- Venting, draft and gas pressure
Signs You Need Carbon Monoxide Safety Check
If any of these sound familiar, it's time to schedule service.
No heat or the furnace will not start
Short cycling
Blowing cold air
Loud banging, squealing or rattling
Carbon Monoxide Safety Check: Photos From Our Jobs
Real photos from MrFixer service calls around the Denver metro — not stock images.
Frequently Asked Questions
Common questions about carbon monoxide safety check in Colorado.
Should I repair or replace my furnace?
We look at age, the cost of the repair, safety and efficiency. If a repair is a reasonable share of a new system and the furnace is safe, we will tell you to repair it.
Does altitude affect my furnace?
Yes. Gas furnaces in the Denver area need to be set up for altitude so they burn correctly. We check combustion during every repair and installation.
Is a furnace emergency dangerous?
If you smell gas, leave the house and call your gas utility from outside. For no-heat calls, we prioritize homes with children, older adults or freezing temperatures.
Our Professionalism Is Reflected in Our Customer's Feedback.
Don't just take our word for it — hear from Colorado homeowners who trust us with their comfort.
Share Your Experience
Your feedback helps us serve Colorado homeowners better.
Our Craftsmanship Is Undeniable.
HVAC emergency? Our team is available 24/7 for urgent heating and cooling repairs across Colorado. Don't wait — call now.
Get Your Free Estimate Today.
Fill out the form below and one of our HVAC experts will get back to you within 30 minutes.
- Free quote in 30 min · no obligation
- Licensed & insured Colorado contractor
- 5★ rated by 1,500+ homeowners
- Same-day service across the Front Range



