Where can I Buy an Ultra-low Nox Furnace in Colorado?

by | Apr 21, 2026

You can purchase ultra-low NOx furnaces in Colorado through specialized HVAC service providers and suppliers like One Nation Plumbing, Heating, and Air. They offer compliant models specifically engineered for high-altitude performance in areas such as Denver, Aurora, and Colorado Springs.

Available brands and models that meet Colorado’s strict emission standards include:

  • Compact A801X: An ultra-low NOx model with emissions under 10 ng/J, ideal for high-altitude installations above 5,000 feet.
  • Trane Models: Options like the XC95M (14 ng/J) and the S9X2 or S8X2 are available, offering high efficiency and compliance with state codes.
  • Other Major Brands: Carrier, Lennox, and Amana also provide models that meet the ultra-low nitrogen oxide requirements.

To ensure the unit meets the specific 14 ng/J limit required for the Front Range and Denver metro areas, it is recommended to schedule a home assessment with a licensed professional. Providers in Aurora and Colorado Springs can help verify compliance, handle the necessary permitting, and ensure proper installation for the state’s unique climate.

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