Serving Sonora, KY and surrounding areas
Approved (Corporate)
In business since 2001
Free estimates
Credit card accepted
"Great customer service! Super nice technician and good price! Will continue to use them for our air unit."

Serving Sonora, KY and surrounding areas
Approved (Corporate)
In business since 2001
Free estimates
Credit card accepted
"Great customer service! Super nice technician and good price! Will continue to use them for our air unit."

Serving Sonora, KY and surrounding areas
Approved
In business since 2011
Free estimates
Warranties offered
"Daniel is extremely knowledgeable and efficient when it comes to furnace or air conditioning units. He has been able to fix any problems we have encountered in a timely manner. He was also able to switch our propane fire place to natural gas. He always answers our calls within a day, and his prices are affordable. We would highly recommend Daniel!!"





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Serving Sonora, KY and surrounding areas
Approved (Corporate)
In business since 1956
Emergency services offered
Credit card accepted
"Willing to work in tough crawl space area"

Serving Sonora, KY and surrounding areas
Approved (Corporate)
In business since 1976
Free estimates
Credit card accepted
Respectful. Reliable. Service Reimagined.\nWe are the leading plumbing contractor in Kentucky. Our licensed plumbers serve residential and commercial clients in Louisville and Lexington. Our construction department is among the largest in the state.\n\nWe give each customer and project, regardless of size and cost, the same quality plumbing services while working within the customer's budget. We stand behind our workmanship long after the project is complete. \n\nOur people are what make the difference. Here's what you can expect from your Dauenhauer service technician:\n- Highly skilled and trained to solve any problem\n- Has passed extensive background checks and regular drug testing\n- Identifiable and proud to represent Dauenhauer\n- Professional and neatly uniformed\n- Drives a Dauenhauer service vehicle equipped with a multitude of parts and tools\n- Wears shoe covers inside your home out of respect

Serving Sonora, KY and surrounding areas
Approved
In business since 1990
Free estimates
Emergency services offered
Louisville Mechanical Services is a premier HVAC contractor the state of Kentucky. We specialize commercial boiler, chillers, pumps, custom sheetmetal, industrial piping, pumps, plumbing, building automation, HVAC installs and all the above full service. We take pride in our work and we look forward to doing business with you. Give us a call today to schedule a free quote.
Serving Sonora, KY and surrounding areas
Approved
We are a local veteran owned HVAC/R provider servicing residential homes and businesses. We believe in offering fair prices with the best repairs, no backdoor markups and surprise fees!

Serving Sonora, KY and surrounding areas
Approved
Free estimates
Emergency services offered
Warranties offered
We are a locally owned and operated HVAC company dedicated to providing reliable, honest, and high-quality heating and cooling services. We specialize in residential HVAC service, maintenance, and system installations, with a strong focus on customer satisfaction and long-term comfort solutions.\n\nOur team takes pride in clear communication, fair pricing, and quality workmanship on every job. Whether it’s routine maintenance, system repairs, or a full HVAC system replacement, we take the time to do the job right and treat every home with care and respect.\n\nWe offer prompt service, detailed system evaluations, and straightforward recommendations so our customers can make informed decisions without pressure. Our goal is to build long-term relationships by delivering dependable service you can trust.\n

Serving Sonora, KY and surrounding areas
Approved
Free estimates
Emergency services offered
We offer quality work at an affordable price

Serving Sonora, KY and surrounding areas
In business since 2024
Free estimates
Emergency services offered
"Nick came out, found the problem quickly, replaced the part and had us up and running within 45 mins of arriving. Even hung around to make sure it worked properly. I will use no other company and highly recommend him to anyone."

Serving Sonora, KY and surrounding areas
In business since 2010
Emergency services offered
Credit card accepted
"I had an issue with my computer where it was opening lots of pop ups, ad bars, and windows with ads for games. I had tried several different programs to try to remove it with no luck. I finally decided to call North Alabama Technical Service to see if I he could help. I was expecting to set up a time for him to look at it but he connected to my computer immediately and within an hour had it fixed and running perfect again. Great service at a great price and I didn't even have to disconnect it and carry it somewhere! Would call again if I have another issue I can't resolve myself."


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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