How Will the Ultra-Low NOx Requirement Affect Colorado Homeowners?
The state of Colorado has set new standards designed to phase out fossil-fueled heating systems, effective January 1, 2026. The legislature’s stated purpose of this move is to further reduce carbon emissions by lowering the amount of nitrogen oxide (NOx) in the air.
Wondering how the new ultra-low-NOx furnace requirements will affect you? This new law will cause furnace prices to increase in 2026. Many homeowners could find the sticker price hard to swallow. If you’re thinking about getting a new furnace, now is the time before prices rise in the new year.
Learn how Sanders & Johnson can help you tackle complex HVAC challenges like air quality regulatory changes. Our comprehensive services include furnace and heat pump installation and repair throughout our service areas, including Lakewood, Denver, Castle Rock, Frisco, Littleton, and many more Colorado communities.
Colorado’s New Ultra Low-NOx Furnace Requirement
The new ultra-low-NOx furnace requirements in Colorado have been set by the Colorado Air Quality Control Commission, which is part of the Department of Public Health. Effective January 1, 2026:
- 10 ng/J limit = gas inputs ≤ 75,000 BTU/hr or
- 14 ng/J limit = gas inputs between 75,000 BTU/hr and 2,000,000 BTU/hr
In short, these formulas mean the furnaces can only produce a certain amount (nanograms) of NOx per Joule of energy produced. No other state in the country has set such stringent standards.
When you choose Sanders & Johnson to perform your heater upgrade, you can trust us to find the perfect low-emission heater to suit your home. You don’t have to worry about calculating emissions vs. energy yourself — we’ll do it all for you, meeting the state’s high standards.
Why Homeowners Should Act Now
Scheduling your furnace replacement now is the best way to avoid higher unit costs in the future. If your furnace is nearing the end of its lifespan or experiencing age-related issues, it’s worth planning ahead and considering a replacement soon. These furnaces may cost more to install, especially if you need to retrofit the new unit into your existing system. Act now to take advantage of current furnace prices and available rebates and incentives.
Should You Replace Your Furnace Before the Deadline?
Yes! Spaces are booking up fast. Schedule your consultation to replace your old HVAC unit before the January 1, 2026, deadline to get your place in line and take advantage of savings sooner. By upgrading now to a low-emission furnace, you can also lower your environmental impact.
Call Sanders & Johnson today to learn more about your options. We have easy financing available, with a fast application process, easy-to-use online account management and bill payment options, and convenient monthly payment plans. We’ll help you get the high-quality heater you want while staying within your budget.
Benefits of Replacing Your System Now
The biggest benefits of replacing your current heating system now include:
- Rebates and tax incentives: You may be able to take advantage of local and federal tax rebates to save money on your new heating system.
- More features: Modern heating systems often offer modern features, such as smart-home integration and advanced air filtration.
When you opt for Sanders & Johnson, you can trust your heating installation appointment to go as smoothly as possible with the following steps:
- Step one: We check out your current system and evaluate your unique needs.
- Step two: A friendly HVAC technician talks with you about your preferences and budget, then suggests a range of available heating options that’ll work for your lifestyle.
- Step three: Schedule an installation appointment time that works best for you.
- Step four: We install the heater with safety and precision in mind, following the manufacturer’s requirements and local building codes. This includes ensuring your ductwork aligns with the new system.
- Step five: Before we leave, we calibrate and test everything and set up the system, so it’s ready to heat your home.
Call Sanders & Johnson for Expert Heating Services in Colorado
At Sanders & Johnson, we believe in providing high-quality technical services you can count on. We aren’t just here to make money — we’re here to give our customers the best solution to their heating concerns. We provide expert analysis, reliable problem-solving, and local knowledge, with premium care every step of the way.
We’re boiler experts, making us unique in the area, and our family-owned business hires skilled, qualified technicians who stay up to date on the latest technologies and methods, including furnace installation and replacement services.
Whether you’re just curious about how the new ultra-low-NOx regulations may affect your home or you’re ready to book your furnace replacement, we’re here to help. Contact us today to schedule an appointment.
Frequently Asked Questions
Will contractors still be able to install regular furnaces after the deadline?
No, contractors have to follow the law. All standard efficiency (80%) furnace installations must be ultra-low-NOx models that meet the new Colorado emissions standards. This is mandatory throughout the entire state, starting January 1, 2026. High efficiency furnaces, which are defined as furnaces with an efficiency rating of 96% or higher, will still be legal after January 1st, 2026. However, not all single-family homes can accommodate a high-efficiency model. One of our friendly technicians can help you determine the best option for a new furnace installation when you are ready to move forward. We can identify the optimal solution for almost any Colorado home.
What is the difference between a low NOx and an ultra-low NOx furnace?
The difference between a low and ultra-low NOx furnace is the amount of harmful emissions each produces. A low-NOx furnace emits 40 ng/J (nanograms per joule) of nitrogen oxides, while their ultra-low NOx counterparts emit just 14 ng/J.
Are ultra-low-NOx furnaces better for the environment than traditional heaters?
Yes. Ultra-low-NOx furnaces produce fewer emissions and might benefit local air quality. These systems are a more environmentally friendly choice, according to the Colorado legislature.
