Serving Fenton, MO and surrounding areas
Approved
In business since 2000
Emergency services offered
Credit card accepted
"They were on time, efficient. Quality was excellent with a couple of hiccups, which they resolved the same when it failed inspection on hwh. I fixed furnace air leak myself with metal tape."
+14
Serving Fenton, MO and surrounding areas
Approved
In business since 2003
Free estimates
Emergency services offered
"A-ok! Dunn OneHour HVAC is always top notch!"
Serving Fenton, MO and surrounding areas
Approved
In business since 2020
Free estimates
Emergency services offered
Adams Air Conditioning & Heating LLC has over 30 years professional experience. We can service any AC unit and have you up and running. servicing the St. Louis area, we take pride in always being prompt, punctual and professional with every project that we complete. Free estimates, please call anytime - offer emergency service. \n
Serving Fenton, MO and surrounding areas
Approved
In business since 1947
Free estimates
Emergency services offered
"Great Experience. I was concerned about the 22 yr age of our air conditioner able to keep working and wonder if a long wait time to get a product shipped like refrigerators last year, I called for a quote and within a week it was installed and working! Installers worked tirelessly until their work was done, clean and neat!"
+2
Serving Fenton, MO and surrounding areas
Approved
In business since 1982
Emergency services offered
Warranties offered
Founded in 1982. Team members that are drug tested and background checked insuring that the people in your home are safe. We specialize in repairing and replacing residential heating and air conditioning systems. "Fixed Right or It's Free"\nTechs available Sat & Sun call for appointment.
Serving Fenton, MO and surrounding areas
Approved
In business since 2014
Free estimates
Emergency services offered
"Customer service was very helpful, tech was able to quickly diagnose the problem and solve it. We signed up for their preventative service HVAC."
Serving Fenton, MO and surrounding areas
Approved
In business since 2017
Free estimates
Emergency services offered
"Wow, they connected me to this guy in 5 mins and he got out to us the next mourning at 7am to look at our hot water heater. He didn't have to make us first and it only took him less than 30 mins and on $130 to replace the thermocouple, had two other company's call wanted to charge 150 and up for service call and parts. Thank you Jedediah for fast service and if you read this give me a call about a quote for replacing my furnace and AC. Give this company a call for quick and good service."
Serving Fenton, MO and surrounding areas
Approved
In business since 1993
Free estimates
Emergency services offered
"Bernie is incredible- no, really. I could not have asked for a better technician today. After a month of no A/C and getting the run around with our warranty company (besides the point), Bernie showed up and saved the day. He took the time to really explain the problem, the steps he took to fix it, and some helpful tips for the future. After repairing our AC unit he walked around the house upstairs and down in the basement to show me how to control the force of air coming out of the vents. He is so friendly and so great. We will definitely reach out to him again in the future if we ever have issues. Thank you Bernie."
Serving Fenton, MO and surrounding areas
Approved
In business since 2017
Emergency services offered
Warranties offered
"Our AC went out on a Sunday afternoon and John was able to help us within a couple of hours. Identified our problem quickly, was upfront about costs, which were reasonable, and had us back in cool air before the day was done!"
Serving Fenton, MO and surrounding areas
Approved
In business since 1993
Free estimates
Emergency services offered
"Installed new a/c, furnace, air filter, humidifier, and water heater. Very professional and helpful group."
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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