Serving Lake Bluff, IL and surrounding areas
Approved
In business since 1946
Free estimates
Emergency services offered
"Very well. The tech did a thorough job checking both the furnace and air conditioning unit. He answered any questions we had,"
+2
Serving Lake Bluff, IL and surrounding areas
Approved
Super Service Award Winner
In business since 2002
Free estimates
Warranties offered
"Andrew and his assistant were very professional in their approach to cleaning our air ducts and dryer vent. The services they provided were totally consistent with how they describe their approach to the service they provide. This included the very helpful before and after pictures taken which would convince anyone of the need to have this work performed in their homes."
+81
Serving Lake Bluff, IL and surrounding areas
Approved
In business since 2011
Free estimates
Emergency services offered
"My experience working with CR Mechanical Services couldn't have been better. While looking to replace my furnace and air conditioner, I requested quotes from 4 different companies and CR Mechanical Services stood head and shoulders above the others. They provided a thorough HVAC consultation, listened to and answered my questions, and proposed a great new system at an unbeatable price. Rick and Craig just finished the installation today - right on time and right on schedule - and were friendly and professional through it all. My thanks to them, and my highest recommendation to all who are looking for an HVAC company."
+8
Serving Lake Bluff, IL and surrounding areas
Approved
Super Service Award Winner
Free estimates
Emergency services offered
Warranties offered
"Very impressed with their heating and air conditioning maintenance. They explained everything clearly, worked efficiently, and left no mess behind. Our home feels fresher after the air duct cleaning. Definitely a trustworthy team you can rely on."
+20
Serving Lake Bluff, IL and surrounding areas
Approved
In business since 1911
Free estimates
Emergency services offered
"The service was excellent! Josh was professional, knowledgeable and explained everything that he was doing. He was a pleasure to have in the house. We've been using AWE for years for heat and air conditioning and they are great to work with. Would highly recommend!
"
+10
Serving Lake Bluff, 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 Lake Bluff, IL and surrounding areas
Approved
Super Service Award Winner
In business since 2014
Free estimates
Emergency services offered
"They were prompt, friendly and knowledgeable. The problem with my A/C was explained to me clearly and I was back in cool, air conditioned comfort in no time!"
+1
Serving Lake Bluff, IL and surrounding areas
Approved
In business since 1973
Free estimates
Emergency services offered
"Outstanding service!! Cahill has been our heating and air conditions company for over 25 years. Installed two systems over this time. High quality work."
+7
Serving Lake Bluff, IL and surrounding areas
Approved
Super Service Award Winner
In business since 2014
Credit card accepted
Customers say: True professional
"Phil serviced our AC today and he was wonderful. He communicated exactly what what wrong with the unit as well as ways to fix the issue in an affordable manner. He took care of the unit quickly and also installed our new thermostat, without adding the cost to his estimate. I would definitely recommend Phil/One Hour to everyone as everything is working like a charm!"
Serving Lake Bluff, IL and surrounding areas
Approved
In business since 2011
Emergency services offered
Warranties offered
"They looked at our basement shower and weren’t able to replicate the problem. They gave us advice on what could be the issue and assured us it wasn’t air in the lines"
+15
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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