Signs Your Furnace Needs Service
- It's been over a year since the last tune-up
- A dusty or burning smell that doesn't clear
- The furnace runs longer than it used to
- Some rooms feel colder than others
What Heating Maintenance Includes
- Inspect burners, ignition and flame sensor
- Inspect the heat exchanger and venting
- Test safety controls and limit switches
- Check the blower and electrical connections
- Check the filter and airflow
- Verify thermostat operation
Why Choose Zenith?
Diagnosis before recommendations
We find the actual cause — with a camera or test equipment when needed — before suggesting a repair.
Options and pricing up front
You'll hear your options and the price before any work begins, so there are no surprises.
Plumbing and HVAC under one roof
Drains, sewer lines, water heaters, furnaces and AC — one team that knows your whole home.
Respect for your home
Shoe covers, protected work areas and a clean jobsite when we're done.
Heating Maintenance Service Areas
Zenith provides heating maintenance across the Denver metro and Front Range, including:
Frequently Asked Questions
When should I schedule furnace maintenance?
Early fall is ideal — before you need heat every day.
Do heat pumps need maintenance too?
Yes. Because a heat pump runs for both heating and cooling, servicing it twice a year is a good idea.