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Furnace Installation
Expert Furnace Installation in Castle Rock, CO
Energy-Efficient Heating Built for Colorado’s High Altitude
As of January 1, 2026, Colorado has entered a new era of home heating. At Avalanche HVAC, we specialize in furnace installation that meets the state’s strict new Ultra-Low NOx (ULN) and Energy Star requirements. Whether you are building a new home or replacing an aging unit, our NATE-certified team ensures your system is perfectly calibrated for the thin air and extreme winters of Castle Rock and Douglas County.
Upgrading to a modern, high-efficiency furnace isn’t just about compliance—it’s about slashing your monthly energy bills and ensuring 20+ years of reliable warmth.
Call Now For Same Day Service on Your AC, Heater, Furnace, Boiler or Plumbing Repair In Castle Rock! (303) 736-8151
Colorado’s 2026 Furnace Regulations: What You Need to Know
Starting this year, standard gas furnaces are no longer the norm. All new HVAC installations in Colorado must now feature advanced combustion technology to reduce emissions. We offer two primary paths for your home:
- Ultra-Low NOx (ULN) Furnaces: These units emit less than 14 nanograms of nitrogen oxide per joule, significantly improving local air quality.
- Energy Star Certified (96%+ AFUE): For maximum efficiency, we install 97% and 98% AFUE models that waste virtually zero fuel, qualifying you for the highest tier of 2026 furnace rebates.
The Avalanche Advantage: High-Altitude Specialists
Installing a furnace at 6,200 feet is different than at sea level. Without proper “derating” and calibration, a furnace will underperform and fail prematurely.
- High-Altitude Kits: We ensure every gas furnace installation includes the correct orifice and pressure switch adjustments for Castle Rock’s elevation.
- Variable-Speed Blowers: We recommend systems that adapt to changing air density, providing more consistent airflow and quieter operation.
- Carrier & Champion Experts: As authorized dealers, we provide industry-leading warranties and proprietary components tested for extreme cold snaps.
Your Top Furnace Installation Questions Answered
Explore the most common inquiries about our furnace installation services, designed to help you make informed decisions about your home heating needs.
What is the cost of a new furnace installation in 2026?
In 2026, the cost for installing a new furnace typically ranges between $7,000 and $12,000. This price reflects the advanced technology and efficiency standards required by new regulations, but the investment is offset by long-term savings and potential tax credits.
Are there rebates available for furnace replacements in Colorado?
Yes, Colorado residents can benefit from the 2026 Federal Tax Credits, which allow you to claim 30% of the cost, up to $600, for high-efficiency gas furnaces. Additionally, local utility companies like Xcel Energy offer rebates ranging from $500 to $1,000.
Can I purchase a standard 80% efficiency furnace?
Standard 80% efficiency furnaces are being phased out in favor of models with 95%+ AFUE due to new regulations. While some older models may still be available, we recommend upgrading to ensure compliance and future-proofing your home.
What Our Customers Are Saying
Service Areas
We proudly provide air conditioning installation to:
- Castle Rock, CO
- Parker, CO
- Littleton & Centennial, CO
- Highlands Ranch, CO
- Elizabeth & Larkspur, CO