Serving Dacono, CO and surrounding areas
Approved
In business since 2001
Free estimates
Credit card accepted
"Very Professional and did not hesitate to explain everything in detail. It is hard to find an HVAC company you can trust to show up and do it right the first time and I believe this is one. Will recommend for future jobs!"
Serving Dacono, CO and surrounding areas
Approved
In business since 2023
Free estimates
Emergency services offered
"Not only did the crew of Behold, Tristan and Kendrick, install a new furnace, but they also installed the Air Conditioning unit, all in one day! They were professional, thorough, friendly and diligent workers. Would hire them any time."
+35
Serving Dacono, CO and surrounding areas
Approved
In business since 2015
Emergency services offered
Warranties offered
"Mariano came out and prepared the estimate for my new furnace and air conditioner. He, his dad and brother installed both units, repaired some of the ducts and configured the electronic. All the while he kept me informed on the status. They cleanup nicely at the end of the day. Excellent to work with. I highly recommend their work and integrity."
+47
Serving Dacono, CO and surrounding areas
Approved
In business since 2008
Free estimates
Emergency services offered
"We had two AC units and a new furnace installed they were prompt, efficient, very respectful and great customer service! Dean was an absolute pleasure to work with, they have earned my business for life on any HvAC services I might need! Highly recommend"
+3
Serving Dacono, CO and surrounding areas
Approved
In business since 2017
Free estimates
Small jobs welcome
"We had 1st Action Plumbing, Heating & Air Inc install a new furnace and A/C system in our home about three years ago, and we couldn’t be happier with it! The system has worked amazingly well and has been reliable ever since. We had a great experience with the installation and would definitely recommend 1st Action to anyone looking for quality HVAC work and a company they can trust!"
Serving Dacono, CO and surrounding areas
Approved
In business since 2014
Emergency services offered
Warranties offered
"Brent was absolutely professional and awesome, he did a great job repairing our furnace in a timely manner, I highly recommend A Moonlighting Heating and Air Conditioning, thanks again Brent!"
Serving Dacono, CO and surrounding areas
Approved
In business since 2025
Free estimates
Emergency services offered
"Technician was extremely knowledgeable. He was also determined to find a solution to my problem. Fortunate for me he was able to resolve my heating and air flow issue. Thanks again!"
+209
Serving Dacono, CO and surrounding areas
Approved
In business since 1983
Free estimates
Credit card accepted
"I had AAA out twice; once to clear clogged drains and again to service a toilet. Both technicians, Andre and John J, were highly knowledgeable, professional, on time, and extremely honest. Honesty goes a long way with me so I will gladly use AAA for all my plumbing & heating needs! I really appreciate getting a text message with the technicians photo prior to the appointment as well. Great company!"
Serving Dacono, CO and surrounding areas
Approved
Super Service Award Winner
In business since 2020
Free estimates
Emergency services offered
"Colorado Mechanical Service & Repair. Came out to my house beat two other quotes that I had from 2 other air conditioning companies by $3500 they showed up on time they were very punctual they had the job done with in 5hrs every thing was done to code. They also cleaned up their mess behind there selfs.. and I had cold air flowing in to my house as soon as they were done. I would recommend them to anyone that's looking for Hvac work that needs to be done I will be using them again in the future."
Serving Dacono, CO and surrounding areas
Approved
In business since 2007
Free estimates
Emergency services offered
We pride our company on reliability, great communication, integrity, and quality work. We are experts Woelfel Heating & Air is a trusted, family-owned HVAC company proudly serving Northern Colorado. We specialize in heating and air conditioning repair, installation, and maintenance for all major brands. Known for our honest pricing, dependable service, and personal approach, we help homeowners stay comfortable all year long. Whether you need a quick fix or a full system replacement, our experienced team is ready to help with prompt and professional service.in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!
+7
Most professional HVAC technicians require two to three hours to complete an expansion valve replacement. The timeframe depends on your unit's accessibility and whether additional repairs are needed. The process involves recovering refrigerant, removing the old valve, installing the new component, and recharging the system. Scheduling during less busy seasons may result in more convenient appointment times.
Operating your air conditioner with a malfunctioning expansion valve isn't advisable. Continuing to run the system could potentially damage other components, particularly your compressor, which is significantly more expensive to replace. If you notice performance issues like inconsistent cooling or unusual noises, it's best to have your system inspected before continuing regular use.
Expansion valves don't have a standard replacement schedule, as their longevity depends on system usage, maintenance frequency, and environmental factors. Regular professional maintenance helps identify potential valve issues before they cause system failure. Having your HVAC system serviced annually allows technicians to monitor component condition and recommend preventative replacements when necessary.
Refrigerant leaks require prompt professional attention. If your expansion valve is leaking, you'll likely notice reduced cooling performance and possibly hear hissing sounds near the unit. Addressing leaks quickly prevents further system inefficiency and avoids the environmental impact of released refrigerant. Your HVAC technician will need to repair the leak and recharge the system with the proper refrigerant type and amount.
Because many AC issues present similar symptoms, professional diagnosis is recommended. Problems like inadequate cooling, inconsistent temperatures, or strange noises could indicate expansion valve issues, but might also stem from refrigerant leaks, electrical problems, or airflow restrictions. A qualified HVAC technician has the tools and expertise to accurately identify the root cause and recommend appropriate repairs.
From average costs to expert advice, get all the answers you need to get your job done.
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