
Serving Mount Horeb, WI and surrounding areas
Approved
In business since 1987
Free estimates
Emergency services offered
"Always great work, very thorough for our summer tuneup to get the air conditioning season started"





+8


Serving Mount Horeb, WI and surrounding areas
Approved
In business since 1987
Free estimates
Emergency services offered
"Always great work, very thorough for our summer tuneup to get the air conditioning season started"





+8

Serving Mount Horeb, WI and surrounding areas
Approved
In business since 1985
Free estimates
Emergency services offered
"This was my first time using Cardinal Heating & Air Conditioning, and it was a fantastic experience. I received a phone call asking me if I wanted to schedule my annual air conditioning check, and when I said yes, the scheduler informed me that she could have a technician come out that day. The technician arrived within a couple of hours and did a thorough check. Everything checked out, and I am ready for the hot summer months."
Serving Mount Horeb, WI and surrounding areas
Approved
In business since 2014
Free estimates
Credit card accepted
We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! \nBook with us online or feel free to give us a call today!\n

Serving Mount Horeb, WI and surrounding areas
Approved
In business since 2005
Free estimates
Emergency services offered
At Southport Plumbing, Heating & Cooling, we're A+ rated by the BBB. Our technicians are NATE certified to meet national standards of excellence, and we're a Carrier® Factory Authorized Dealer, recently cited as the #1 medium-sized business to work for by the Milwaukee Journal Sentinel. We treat our team well and hold them to high professional standards. Our up front, transparent pricing, great customer service, and honesty in our business practices make us the plumbing and HVAC company that you'll feel good working with on a regular basis, with 100% satisfaction guaranteed.





+11

Serving Mount Horeb, WI and surrounding areas
Approved
In business since 1985
Free estimates
Customers say: Quality work
"Quick and easy. I've used him before because of great service. Already had everything because my other one broke and drained all over the floor. Probably would have been at least 3-4 hours if I was replacing one that broke because of just not functioning."





+1

Serving Mount Horeb, WI and surrounding areas
Approved
Super Service Award Winner
Warranties offered
Customers say: True professional
"I don’t think there is anything Oscar can’t do. He put up screens, fixed electrical issues, installed an air conditioner, fixed door jams so that our doors would lock, added a handrail to the basement and sanded and painted holes on the wall. I can’t say enough good things about Oscar’s work. He is very personable too. I highly recommend Oscar for any job you might need done."





+15

Serving Mount Horeb, WI and surrounding areas
Approved
Super Service Award Winner
In business since 2017
Free estimates
Emergency services offered
When your pipes freeze or furnace quits, our work begins. Hooper’s service technicians arrive equipped with fully stocked service vans and are ready to roll at a moment’s notice. We’ve been caring for customers in the Madison area since 1913 and offer 24-hour residential and commercial service. You can rely on Hooper for all your plumbing, heating and cooling, and fire protection needs. When you need a trusted service partner, Hooper is here.





Serving Mount Horeb, WI and surrounding areas
Approved
In business since 2007
Free estimates
Emergency services offered
Aire Serv is a full-service HVAC company dedicated to providing exceptional heating, ventilation, and air conditioning solutions for both residential and commercial clients. We specialize in a wide range of services, including regular maintenance, expert repairs, and same-day service for all types of HVAC systems. Whether you need a quick repair, a complete HVAC replacement, or are embarking on a new construction project, our team of highly trained professionals is here to ensure your systems run smoothly and efficiently.\n\nOur services also include comprehensive duct cleaning, dryer vent cleaning, and ductwork modifications to enhance air quality, system performance, and energy efficiency. We understand the importance of a comfortable indoor environment, and we are committed to delivering prompt, reliable, and affordable solutions tailored to meet your specific needs.\n\nWe pride ourselves on customer satisfaction, ensuring that every job is completed to the highest standards.





+17

Serving Mount Horeb, WI and surrounding areas
In business since 1949
Free estimates
Emergency services offered
"We tend to try and have the heating inspection and the air conditioning every year. We don't always quite accomplish that and we've had other people do it but I thought their prices were fair. They were prompt in getting here and answered whatever questions I had. It took them about 2 hours to do the work."



Serving Mount Horeb, WI and surrounding areas
In business since 1985
Free estimates
Emergency services offered
"Professional, down to earth, natural, true, anything good you can think about, describes Dale's Heating & Air Conditioning, LLC. GOD bless the employees and owner(s) of Dale's Heating & Air Conditioning, LLC."
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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