Serving Brookfield, 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 Brookfield, IL and surrounding areas
Approved
In business since 1979
Free estimates
Emergency services offered
"I bought a new (old) house in Brookfield and the air conditioner unit promptly failed. I got bids from three contractors I found via Angie's List. Not only did Jim at Vent give me the most competitive bid, he was hands down the most responsive to questions and phone calls, gave the most thorough inspection, and ended almost every conversation with a very sincere, "let me know if there's anything more I can do to win your business." On install day, his guys were early and ready to work. Jim showed up shortly after to supervise. My wife was there that day and he explained everything they were doing and why. He had budgeted 2-4 hours to do the job, but the previous install had been done so poorly that there was a lot of stuff they needed to fix so the new air conditioner was installed to their satisfaction, so they were there for more than 6 hours and didn't ask for a dime more than their quote. I couldn't recommend these guys more highly."
Serving Brookfield, IL and surrounding areas
Approved
In business since 1911
Free estimates
Emergency services offered
"The air conditioner is working fine."
+10
Serving Brookfield, 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 Brookfield, IL and surrounding areas
Approved
Super Service Award Winner
In business since 2017
Free estimates
Emergency services offered
"Our air conditioning unit went out. They came out immediately. Unfortunately the unit needed to be replaced and they were able to take care of it the next day. Prompt and professional."
+25
Serving Brookfield, IL and surrounding areas
Approved
In business since 2020
Free estimates
Emergency services offered
"ALâ s Cooling and Heating is the only HVAC contractor that I would recommend. The level of knowledge that they show is off the charts. It is obvious that they care about the customer. Value that can not be beat. HIGHLY RECOMMEND."
+2
Serving Brookfield, 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 Brookfield, IL and surrounding areas
Approved
In business since 2013
Free estimates
Emergency services offered
"The man that came out was prompt . He fixed the problem for a fair price.i had a guy come out before him and he told me I needed a new system. It didnâ t make sense because my air system was just installed in 2018. I appreciate his accuracy identifying the problem. I have already reffered him to others"
Serving Brookfield, IL and surrounding areas
Approved
Super Service Award Winner
In business since 1998
Emergency services offered
Warranties offered
"Amer Talla is the best! He knows the industry, he is an expert HVAC person all-around. Actually, he is a general contractor. He diagnosed the problem, provided a detailed solution, and was the consummate professional. He is not just the expert you should call because he is knowledgeable and professional, BUT he is thorough. You can tell he loves what he does and he cares about his customers. He’s the one I will call for future maintenance and anything else HVAC-related. I highly recommend him!"
+9
Serving Brookfield, 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."
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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