
Serving Lone Tree, CO and surrounding areas
Approved
Free estimates
Emergency services offered
Warranties offered
"Went great! I can breath easier now that the ducts and vents are clean. Thank you for your awesome service!"





+26


Serving Lone Tree, CO and surrounding areas
Approved
Free estimates
Emergency services offered
Warranties offered
"Went great! I can breath easier now that the ducts and vents are clean. Thank you for your awesome service!"





+26

Serving Lone Tree, CO and surrounding areas
Approved
In business since 2002
Free estimates
Warranties offered
"Don was excellent. He performed a very thorough inspection of my system and clearly explained all his findings. My furnace is 20 years old, and despite finding many smaller issues he was not pushy about replacing the entire thing. He just gave an honest assessment of the condition. Don correctly found the issue with the blower (bad controller board) and fixed the cause of the failure (plugged drain pipe, causing water damage). After replacing the board the furnace is back up and running. I'll be giving them a call when it is time to replace the furnace."


Serving Lone Tree, CO and surrounding areas
Approved
Super Service Award Winner
In business since 2004
Free estimates
Offers commercial services
"I had the AC person out who had been servicing my AC as well as my mom’s for years and he told me the unit was shot and I needed to replace the whole thing. I called Pacific Air this morning, they came at noon, had it up in running 20 minutes later. Only charged me the service fee. While I am sad about the other guy trying to rip me off, I am so happy I called Pacific Air. An honest, fair, professional company."





Serving Lone Tree, 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 Lone Tree, CO and surrounding areas
Approved
In business since 2017
Free estimates
Emergency services offered
Heating, Cooling & Electrical Services Emporia is committed to keeping you comfortable in your own home with expert service, quality parts and equipment, as well as unique technology designed and assembled with care by our own engineers right here in Colorado. Emporia proudly serves Littleton, Lakewood, and the Denver Metro area with quality Heating, Ventilation, and Air Conditioning (HVAC) solutions. Our goal is to ensure that every customer receives best-of-class service and reliable products, all at the lowest possible price we can offer.





+11

Serving Lone Tree, CO and surrounding areas
Approved
In business since 2018
Free estimates
Emergency services offered
"Great service and came out the same day to winterize the swamp cooler and sell me a cover. I will be calling them again!"





+4

Serving Lone Tree, CO and surrounding areas
Approved
Super Service Award Winner
In business since 2020
Free estimates
Emergency services offered
"Lou was extremely helpful and knowledgeable. His service was incredible and he got my furnace working in no time. Hands down best HVAC experience Iâ ve ever received! Definitely recommended."





+7

Serving Lone Tree, CO and surrounding areas
Approved
In business since 2015
Free estimates
Emergency services offered
"Our experience was incredible! They were in and out in 3 hours and even went out to drive to Denver and back to get the very unique part we needed for our very old air conditioner. He was very professional and got right to work. No haggling or excessive pricing. He also worked long after the end of the work day. Very clearly committed to excellence and getting the job done quickly and accurately."





+21

Serving Lone Tree, CO and surrounding areas
Approved
Super Service Award Winner
In business since 2023
Free estimates
Emergency services offered
"So happy with my new furnace! Habib was super responsive and squeezed me in right after our first cold snap, right before Christmas. Did a great job explaining things both about the new unit and the concerns about my old/broken. Very competitively priced. His whole team was professional and respectful. They left my place spotless after the install. Will be contacting ComfAir again when my 30 year old AC inevitably bites the dust!"





+3

Serving Lone Tree, CO and surrounding areas
Approved
In business since 1988
Free estimates
Emergency services offered
"Working with Nate was great. We spoke with consultants from three different companies, but Nate was the only one that brought along a notepad and tape measure to take detailed notes to ensure that the system he would later suggest was actually compatible with our house layout. One of them didn't even bother to go outside and look at the space the air conditioner would ultimately go! He gave his own suggestion for the system he thought we'd like, but also helped us understand all of our options through their company. We ultimately agreed with his opinion, but never felt forced into going that route. I was particularly impressed when he decided to take an extra day or two to consult with his boss and do a second walkthrough to nail down the fine details. Our home wasn't structured with air conditioning in mind, so he wanted to make sure the ducts and vents were planned to get the best result. Nate also stayed in close contact throughout the entire process and even after the install to make sure we were completely satisfied. Which we definitely are."





+14
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.
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