Serving Shell Knob, MO and surrounding areas
Approved
In business since 1965
Free estimates
Credit card accepted
"The employees of Paschal were very concerned with my heating and air condition problem and were very cordial to do what I asked of them. They did not pressure me into purchasing something I didnâ t want or need done. Kudos Paschal!!!"
+22
Serving Shell Knob, MO and surrounding areas
Approved
In business since 1985
Free estimates
Emergency services offered
We pride our company on reliability, great communication,\nintegrity, and quality work. We are experts in our trade and will do our best\nto keep you as educated as we can on your particular task or project. We look\nforward to earning your business!
Serving Shell Knob, MO and surrounding areas
Approved
In business since 2024
Free estimates
Credit card accepted
"He was gonna have to order part, he gave me a good quote . I asked him if i could call back. My husband and i needed to mull it over, so i called him bacķ so he wouldnt have to order something that he didnt need. Very pleasant, i would definately use them again. Its good to know he can do anything. Hvac too. I just love it when people know what they're doing , they're honest they're pleasant,and helpful. I trust him."
Serving Shell Knob, MO and surrounding areas
Approved
In business since 2018
Free estimates
Credit card accepted
"He helped replace some windows and did a very good job at it."
Serving Shell Knob, MO and surrounding areas
Approved
In business since 1984
Free estimates
Emergency services offered
"Very nice to work with and very fair on price."
+30
Serving Shell Knob, MO and surrounding areas
In business since 2016
Free estimates
Emergency services offered
"Air Comfort was so easy to hire and get the job done!!"
Serving Shell Knob, MO and surrounding areas
In business since 2025
Free estimates
Emergency services offered
"Vince was great to work with! Professional, thorough and responsive. Appreciate his help. Highly recommend!"
Serving Shell Knob, MO and surrounding areas
In business since 1987
Free estimates
Emergency services offered
"The Bud Anderson technician did a very thorough job of cleaning our HVAC ducts and dryer vent. We're quite pleased with the service."
+25
Serving Shell Knob, MO and surrounding areas
Emergency services offered
"Great experience with Flame Tech. George was knowledgeable and responsive. He provided an accurate estimate over email based on a number of photos and a few phone conversations which streamlined the bid process considerably. They replaced my AC in a few hours for a fair price and educated me on other safety considerations related to my furnace. He also helped me diagnose a rattle in my air ducts that would have given me fits. Good price, know-how, and customer service, I would use Flame Tech again."
+1
Serving Shell Knob, MO and surrounding areas
In business since 2025
Free estimates
Warranties offered
"Matt always does excellent work. He keeps our HVAC in smooth running condition and it is almost 18 years old! When it has an issue Matt has always been there to repair it quickly. He is honest and fair. Highly recommend!"
+31
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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