When to Replace Your Furnace
- The furnace is 15–20 years old
- A cracked heat exchanger has been found
- Repairs are frequent or costly
- Uneven heating from room to room
- Heating bills keep rising
Our Furnace Installation Process
- Perform a load calculation to size the system
- Review efficiency options and venting requirements
- Remove the old furnace
- Install with proper venting, gas piping and high-altitude setup
- Test combustion and performance
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.
Furnace Installation Service Areas
Zenith provides furnace installation across the Denver metro and Front Range, including:
Frequently Asked Questions
What does AFUE mean?
Annual Fuel Utilization Efficiency — the percentage of fuel that becomes heat for your home. A 95% AFUE furnace turns about 95 cents of every gas dollar into heat.
Do furnaces need high-altitude adjustments?
Often, yes. Gas furnaces installed at Colorado elevations typically need to be configured for altitude so they burn correctly.