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Find Air conditioning pros in Deerfield

Avatar for All Temp Heating & Air Conditioning
All Temp Heating & Air Conditioning
4.5(
2,814
)

Serving Deerfield, IL and surrounding areas

Approved (Corporate)

In business since 1938

Free estimates

Emergency services offered

"I was very happy with this company. They did not try to over sell me stuff I did not need. This is a real plus. They were friendly professional and cleaned up after themselves. All my questions about the unit were answered so I understood what they were talkin about. Their pricing is reasonable. They promptly provided info I needed to get the permit from the village for install. There is nothing negative about my experience with them. I believe from my experience with ALL TEMP Heating and Air Conditioning was fair and honest. I will be recommending them to others as they were recommended to me"
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100% Customer Satisfaction

+6

Response time10 hrs
88 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for G & R Heating and Air, LLC
G & R Heating and Air, LLC
4.6(
1,131
)

Serving Deerfield, 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."
New 16 seer A/C
Old A/C
Old furnace
New Furnace
Water heater Installation

+1

Response time2 hrs
Response rate91%
316 neighbors recently requested a quote
Avatar for CR Mechanical Services, LLC
CR Mechanical Services, LLC
4.7(
53
)

Serving Deerfield, 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."
Office furnace
Furnace for office
Office ac coil with damper
Shah furnace
Shah furnace

+8

Response time6 hrs
2 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Four Seasons Heating & Air Conditioning
Four Seasons Heating & Air Conditioning
4.3(
3,279
)

Serving Deerfield, IL and surrounding areas

Approved (Corporate)

In business since 1971

Free estimates

Emergency services offered

"Excellent. Technician arrived timely. Tech was extremely courteous, professional and gave detailed explanation of central air system operating status. We have had Four Seasons perform seasonal check up on our heating and air conditioning system, and repairs when required, for over ten years."
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Response time9 hrs
28 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for Cahill Heating, Cooling, Electric, Plumbing & Sewer
Cahill Heating, Cooling, Electric, Plumbing & Sewer
4.8(
33
)

Serving Deerfield, 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."
Furnace Installations
Heat Pump Installations
Furnace Installations
Additional Photos
Additional Photos

+7

Response time8 hrs
11 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Lifeline Plumbing Heating & Cooling
Lifeline Plumbing Heating & Cooling
4.6(
2,422
)

Serving Deerfield, IL and surrounding areas

Approved

In business since 2011

Emergency services offered

Warranties offered

"Thought it was a plumbing issue, but turned out to be an issue with air conditioner. They were prompt in responding to the emergency call. HVAC responder was knowledgeable. Price for furnace and AC was horribly overpriced!"
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+15

Response time5 hrs
30 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Full Efficiency Heating And Cooling
Full Efficiency Heating And Cooling
4.9(
29
)

Serving Deerfield, IL and surrounding areas

Approved

In business since 1998

Free estimates

Emergency services offered

"Full Efficiency heating and cooling has maintained my home AC and heating for many years. The reason why, I trusted my technician Carlos to install a new HVAC service at my new office in Waukegan. He is amazing, always listens to my concerns, educates me, and builds my trust. An amazing team, focused on delivering trusting customer service. A debt of gratitude to Full Efficiency heating and cooling."
Remodel
Condensers
Installed furnaces
Response time10 hrs
2 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Phoenix HVAC, LLC
Phoenix HVAC, LLC
4.8(
64
)

Serving Deerfield, IL and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"I used Phoenix HVAC last week for some maintenance and to help improve the air flow in the house. They are so reliable and easy to work with. The technicians were friendly and efficient and were open to all of our questions about the work they were doing. Since they came, we have definitely noticed a good change in the amount of air circulating on our top floor. I would definitely recommend them!"
Staging and Wrapping Ductwork
Staging and Wrapping Duct Work
Installation
OUR WORK
OUR WORK

+21

Response time9 hrs
Response rate92%
Recommended by96%of homeowners
Long Shun HVAC and Refrigeration Inc.
4.3(
126
)

Serving Deerfield, 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"
Response time3 hrs
Response rate95%
7 neighbors recently requested a quote
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Showing 1-10 of 516

FAQs for air conditioning projects in Deerfield, IL

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.

The Deerfield, IL homeowners’ guide to air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.