Serving Dupont, 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 Dupont, 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 Dupont, 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 Dupont, CO and surrounding areas
Approved
In business since 2018
Free estimates
Emergency services offered
"I just needed some simple advice regarding the filter in my central heating and air system. Adrian explained exactly what I needed and why. He saved me from unintentionally restricting airflow and burning out my entire system. He a Very knowledgeable and an all around good guy. Highly recommend this company."
+4
Serving Dupont, CO and surrounding areas
Approved
Super Service Award Winner
In business since 2023
Free estimates
Emergency services offered
"We are so pleased with the work we had done by Habib. Our landlord hired him. His work is impeccable and he took the time to ensure everything was properly installed. His follow through is wonderful and he cares about what he does. Thank you Habib."
+3
Serving Dupont, CO and surrounding areas
Approved
In business since 2014
Emergency services offered
Warranties offered
"Overall great experience with A-Moonlight Heating and Air Conditioning. Affordable, quick, and friendly. Will definitely use it again!"
Serving Dupont, CO and surrounding areas
Approved
In business since 2008
Free estimates
Credit card accepted
"We will hire this company for all HVAC need! great ppl, GREAT JOB! thank-you Marti"
Serving Dupont, 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 Dupont, CO and surrounding areas
Approved
In business since 2020
Free estimates
Emergency services offered
"When our 20 year old air conditioner broke on a 905-100 degree weekend, it was definitely an emergency! I put in a request to HomeAdvisor and Aether responded that day and had someone out the next day! Our new air conditioner was installed the following Monday. Aether was prompt, profesional, and very hard-working. The installers worked all day (until 8 PM) to get us up and running again. I would definitely recommend Aether Mechanical and am very grateful to them for saving me from the heat!"
+1
Serving Dupont, CO and surrounding areas
Approved
In business since 2025
Free estimates
Emergency services offered
"Brian tested and fixed my AC quickly and professionally. He did the job efficiently and for hundreds, not thousands that the big outfits were quoting. He will be doing my HVAC maintenance from now on!"
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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