Important Notice for Colorado Homeowners
As of January 1, 2026, new state emissions regulations are in effect in Colorado, including updated low-NOx requirements for residential furnaces. Due to these changes, replacement equipment that meets the new standards is more limited and significantly more expensive than prior models.
Because of this, homeowners with older furnaces should be aware that delaying replacement may result in higher equipment costs and longer lead times in the future. Planning ahead can help avoid unexpected expenses and availability issues.
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Ultra-low NOx (nitrogen oxide) furnaces, particularly those found in California, are known to have several common problems due to their more complex and sensitive design. Homeowners and HVAC technicians report issues with noise, ignition, safety switches, and performance.
A piercing, loud harmonic noise is a frequently reported issue with ultra-low NOx furnaces. It can sound like a loud alarm and is caused by the furnace's very precise and low gas pressure settings required to reduce emissions.
An HVAC technician can try adjusting the gas pressure. However, some technicians report that lowering the pressure enough to eliminate the noise can drop the furnace's efficiency significantly, from 80% to as low as 66%. In some cases, the gas valve itself may be the issue and needs replacement.
If your furnace turns on and off too frequently, especially during extremely cold weather, it can indicate a problem.
Possible Causes
A common problem, particularly with certain brands like Goodman, is an "open limit" error indicated by blinking lights on the control board. This is frequently caused by airflow problems.
Causes Include
The furnace may fail to ignite, which can be an intermittent or frequent issue.
Common Causes
Ultra-low NOx furnaces are more prone to part failure due to their finicky nature and more complex components. Some HVAC professionals find the overall quality of parts in these furnaces, particularly those meeting California standards, to be poor.
Don't wait until Colorado's new ultra-low NOx regulations take effect. Secure current pricing and avoid potential cost increases by upgrading your heating system now. We'll help you choose a system that meets the new standards while avoiding the complications of ultra-low NOx technology.
Investing in a new, energy-efficient HVAC system can lead to significant savings through available rebates. As our primary partner, Xcel Energy offers various incentives for qualifying heating and cooling upgrades in Parker, CO. Since rebate programs frequently change, please reach out to our team at Moore Heating & A/C for personalized guidance on current offers, or visit Xcel Energy's website directly for the latest details.
AREAS WE SERVE
From our headquarters in Parker, CO, we provide fast, reliable HVAC service to:
If you're in or around these areas, Moore Heating & A/C is your local expert for heating, cooling, and indoor air quality.
Looking to save on your next HVAC service or system upgrade? Explore our current specials and rebates on high-efficiency heating and air conditioning solutions for your Parker, CO home.
Our maintenance service includes a yearly check up on your air conditioner and any repairs that might be necessary.
(720) 464-3040Coupon must be present at time of service.
Our maintenance service includes a yearly check up on your furnace and any repairs that might be necessary.
(720) 464-3040Coupon must be present at time of service.
Enjoy a free thermostat with the installation of a new system.
(720) 464-3040Coupon must be present at time of service.
MOORE HEATING & A/CāA NAME YOU CAN TRUST
When you need furnace installation in Parker, CO, choose the company that's been keeping families warm since 1993. Moore Heating & A/C combines technical expertise with honest service to deliver heating solutions that last.