Serving Boulder, CO and surrounding areas
Approved
Super Service Award Winner
In business since 2004
Free estimates
Offers commercial services
"Shane and PAC Air tech, Ray were both great. Job was well done and done quickly despite Summer crush!"
Serving Boulder, CO and surrounding areas
Approved
In business since 2001
Free estimates
Credit card accepted
"M&H Air helped upgrade Gas furnace/ Forced air heating system, by adding new ducts and vents in basement to help create more comfortable living space. Also has provided great preventive maintenance service to my Heating and A/C system!"
Serving Boulder, CO and surrounding areas
Approved
Super Service Award Winner
In business since 2023
Free estimates
Emergency services offered
"We had an outstanding experience with Behold Heating & Cooling Services! Our HVAC blower (squirrel cage) failed on Thursday evening, just before a weekend with temperatures expected to reach 102 degrees. After calling multiple HVAC companies and being told no one could come out until the following week, Behold was able to schedule Erfan Azimi to come out right away. Erfan quickly diagnosed the problem, picked up the necessary parts, and had our air conditioning back up and running before the weekend. He was personable, knowledgeable, efficient, and took the time to explain everything clearly. We truly appreciated the prompt service and professionalism, especially given how busy HVAC companies are during this heat. I highly recommend Erfan Azimi and Behold Heating & Cooling Services. They turned what could have been a miserable weekend into a comfortable one!"
+67
Serving Boulder, CO and surrounding areas
Approved
In business since 2008
Free estimates
Emergency services offered
"Am so impressed with his skills he saved me so much money I added air had some problems it was operate error he talk me through lt late at night and got it going"
+3
Serving Boulder, CO and surrounding areas
Approved
In business since 2014
Emergency services offered
Warranties offered
"Very happy with the service, he fixed our air conditioner instead of trying to sell us a new one. When it comes time to replace our air conditioner we will hire A Moonlight"
Serving Boulder, CO and surrounding areas
Approved
In business since 2017
Free estimates
Small jobs welcome
"I actually had my furnace and my air conditioner replaced. I found Brandyn, Curtis and Rob all to be very professional and informative. (It was my choice to replace both, no pressure to upsale) Furnace was pushing 30 and air was not far behind. Rob and Curtis answered all my questions and left my house and yard exactly as they found them. I was very pleased to have chosen 1st Action to handle my job. Jan H."
Serving Boulder, CO and surrounding areas
Approved
In business since 1983
Free estimates
Credit card accepted
"Very professional work under trying conditions!!! Loved this professional!!!"
Serving Boulder, CO and surrounding areas
Approved
Super Service Award Winner
In business since 2019
Free estimates
Emergency services offered
"The installers were very efficient and professional. The attic was very hot when they were installing the fan. They seem to be just fine with those conditions."
+24
Serving Boulder, 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
Serving Boulder, CO and surrounding areas
Approved
In business since 1993
Free estimates
Emergency services offered
"Oswaldo and his crew were fantastic installing our brand new A/C unit. Our home is older and was never equipped with air conditioning or any cooling. After the install was completed, Oswaldo showed and explained to me everything that was done and also helped setup the smart phone app to control the new thermostat. Everything from arrival and covering up their work area to protect my belongings to their final walk thru and clean up was top notch. Couldn’t be happier."
+10
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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