Serving Bellvue, CO and surrounding areas
Approved (Corporate)
Super Service Award Winner
In business since 1978
Free estimates
Emergency services offered
"They have service my furnace and air conditioner for years"
Serving Bellvue, CO and surrounding areas
Approved
In business since 2017
Free estimates
Small jobs welcome
"The service man arrived on time and fixed the air conditioner. Zach explained what the problem was; what the solution was and what it would cost. He did the repair that moring. Our air conditioner is working. The job site was left clean and tidy. Great group of people to work with."
Serving Bellvue, CO and surrounding areas
Approved
Free estimates
Warranties offered
Small jobs welcome
"Dillan framed and poured my patio and it turned out great! Highly recommend"
+4
Serving Bellvue, CO and surrounding areas
Approved
In business since 2025
Free estimates
Offers commercial services
"Nice guy, did a great job repairing my furnace. Quick and reasonable on the price."
Serving Bellvue, CO and surrounding areas
Approved
We provide complete HVAC solutions for both residential and commercial projects throughout Denver and all of Colorado.\n\nWe specialize in the installation, maintenance, and repair of:\n✔ Central air conditioning systems\n✔ Mini split systems\n✔ Furnaces (heating systems)\n✔ Full HVAC systems\n\nOur team is committed to delivering accurate diagnostics, efficient solutions, and high-quality workmanship on every job. Whether it’s a small residential service or a large commercial project, we have the experience and capability to get the job done right the first time.\n\nWe focus on comfort, energy efficiency, and long-term system performance, adapting every installation to meet Colorado’s climate demands.\n\n✔ Residential & Commercial Work\n✔ Reliable and Professional Service\n✔ Fast and Efficient Response\n\n📍 Serving Denver and all of Colorado\n📞 Free estimates available\n
Serving Bellvue, CO and surrounding areas
Approved
In business since 2023
Free estimates
Warranties offered
Northern Mechanical is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customer's interests, and make their concerns the basis of our business.
Serving Bellvue, CO and surrounding areas
In business since 2015
Free estimates
Emergency services offered
"Rubin is awesome he doesn't leave till the jobs done and fixed . Heater went out he made sure"
Serving Bellvue, CO and surrounding areas
In business since 2021
Free estimates
Emergency services offered
"I received excellent service from pro heating and AC. The price was excellent. The way the team presented themselves was very professional. These guys really care about their customers. Everybody needs to hire these guys. The air conditioning that they installed works very good, and I could not be happier."
Serving Bellvue, CO and surrounding areas
In business since 1989
Free estimates
Emergency services offered
"They were super! We wanted a mini split air conditioner and they gave us sound advice about the types and prices. They sent reminders and information about the staff, and they arrived on time and did excellent work!!"
Serving Bellvue, CO and surrounding areas
In business since 2009
Free estimates
Emergency services offered
"We had Lions Home Service come out and give us a quote on duct cleaning. Doug was prompt and considerate of our needs. He gave us a quote for duct cleaning and mentioned a few add ons and a flyer explaining those. We never felt pressure to get any add ons. Very considerate, friendly and prompt."
+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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