Serving Berkeley, IL and surrounding areas
Approved
In business since 2009
Free estimates
Emergency services offered
"Repairing Central Air Conditioning System"
Serving Berkeley, IL and surrounding areas
Approved
In business since 1972
Free estimates
Emergency services offered
"We purchased a new central air conditioner and a 2-stage furnace. In addition, they needed to update the air circulation to and from the system, which was nicely done. Needed a little tweaking, and one of the owners came out to perform the simple task himself."
Serving Berkeley, IL and surrounding areas
Approved
Super Service Award Winner
In business since 2014
Free estimates
Emergency services offered
"This business is the company that bought the older Barrington Heating and Air Conditioning. I have relied on Barrington to service my house furnace and A/C for more than 50 years. They have come to my rescue more than once. My service technicians have become friends, not just repair people."
+1
Serving Berkeley, IL and surrounding areas
Approved
In business since 1911
Free estimates
Emergency services offered
"The air conditioner is working fine."
+10
Serving Berkeley, IL and surrounding areas
Approved (Corporate)
In business since 1971
Free estimates
Emergency services offered
"We had a great experience with Four Seasons Heating & Air Conditioning during our recent replacement of our furnace and AC unit. They were very professional and completed the job on time and answered all of my questions. Would recommend them for our Heating, Air Conditioning, Plumbing and Electrical needs."
Serving Berkeley, IL and surrounding areas
Approved
Super Service Award Winner
In business since 2017
Free estimates
Emergency services offered
"Francisco of United Heating and Air Conditioning is the greatest, and I will hire him again happily and hope to have him service my system yearly going forward. He came today as promised and found that my thermostat only needed batteries, but my system was otherwise fine. He is very good and extremely honest and informative."
+25
Serving Berkeley, IL and surrounding areas
Approved
In business since 1992
Emergency services offered
Warranties offered
Precision Today is a trusted multi-trade contractor with a expert technicians specializing in HVAC services for residential properties. We deliver fast, safe, and reliable solutions—backed by same-day service.\n\nOur HVAC services include heating and cooling system installation, furnace and AC repair, seasonal maintenance, ductwork services, thermostat upgrades, and energy-efficient system replacements. Whether you need a quick repair or a full system upgrade, our technicians work with precision and attention to detail to keep your home or business comfortable year-round.\n\nWith locations in Carol Stream, West Chicago, Grayslake, Palatine, Franklin Park, and Naperville, we provide efficient coverage across the surrounding Chicago suburbs—allowing us to respond quickly and keep your project moving.\n\nIf you’re looking for a responsive, professional contractor who prioritizes safety, speed, and quality, Precision Today is ready to help—often the same day you call.
+49
Serving Berkeley, IL and surrounding areas
Approved (Corporate)
Super Service Award Winner
In business since 1922
Free estimates
Emergency services offered
"Issac was here to chemically clean the air conditioning unit. I've never seen such a dirty unit! He came out and did a great job even though he wasn't feeling well. I'm a nurse, and he decided to stay and complete the job, even though I told him we could reschedule so he could go home and get some rest."
Serving Berkeley, IL and surrounding areas
Approved
In business since 2015
Free estimates
Emergency services offered
"I cannot recommend Hot Cold Air enough! Their dedication to customer service is truly outstanding. From the moment I called, they showed complete respect for my time and scheduled the appointment at my convenience. They arrived right on time, and their team was not only professional but also incredibly courteous and clean, leaving no mess behind. What impressed me the most was their communication. They kept me informed every step of the way, providing updates on the progress and making sure I understood what was being done. Their honesty and transparency were refreshing—they honored every coupon without hesitation and offered fair pricing for top-notch service. It’s rare to find a company that combines timeliness, cleanliness, and a genuine commitment to customer satisfaction so seamlessly. I will definitely be calling Hot Cold Air again for any HVAC needs. Highly recommend!"
+17
Serving Berkeley, IL and surrounding areas
Approved
In business since 2012
Warranties offered
Credit card accepted
We specialize in Heating /Air conditioning and all kitchen and laundry appliances and. We are familiar with all the new high tech appliances and new heating and ac systems, as we are constantly attending continuing education seminars for all the latest products.\n\nAlliance Repair Services fully stocks our vehicles as our goal is to repair every appliance upon on our first visit to save you both time and money. Most of our repairs are completed on the same day of call.\n\nWe pride ourselves on offering customer service unparalleled in the industry. Our staff is both knowledgeable and helpful. Our goal is to schedule prompt and on time scheduling. We recognize the value of time, and created scheduling windows to help better serve our clients’ diverse lives.
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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