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Top-Rated Air conditioning pros in Oswego - Updated Nov 2026

Avatar for Home Comfort Systems Inc
Home Comfort Systems Inc
4.9(
315
)
Central A/C - InstallCentral A/C - Service or RepairCentral A/C - Install - For Business+12 more

Serving Oswego, IL and surrounding areas

Approved

In business since 1972

Free estimates

Emergency services offered

"The owner, Steve, came out and explained everything and more that I should be aware of regarding the replacement of the 26 year old furnace and Air conditioning units. He was a pleasure to work with and the price quote was more than acceptable. I did accept and within the week the crew arrived to do the installation. Al and Damien were very professional and the work was extremely well done. They finished that same day and when they left it was if the new units had always been there. I was extremely impressed and will certainly go back to them for future maintenance. You can't go wrong with this company!"
Additional Photos
Response time8 hrs
Response rate100%
10 neighbors recently requested a quote
Avatar for Four Seasons Heating & Air Conditioning
Four Seasons Heating & Air Conditioning
4.3(
3,298
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+12 more

Serving Oswego, 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."
Additional Photos
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Response time9 hrs
34 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for TR Miller Heating, Cooling, Plumbing and Electrical
TR Miller Heating, Cooling, Plumbing and Electrical
4.5(
112
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+12 more

Serving Oswego, IL and surrounding areas

Approved

In business since 2008

Free estimates

Emergency services offered

"We were having issues with our current furnace and decided to purchase new equipment versus putting repair money into an obsolete one. Due to the unreliability of the old unit, we wanted the new furnace/AC installed before we went on vacation.  They arrived on time, and completed the work in the time frame promised. All the work was done to the highest quality, and exactly as promised. This work was done on a cold day, and with over a foot of snow around the house, including around the old air conditioner. With the cold temps, we were very happy the total job was done in about 6 hours. The equipment is working extremely well. TR Miller took away all the old equipment, and did a good job of explaining the operation of the new furnace, thermostat, humidifier, and air cleaner. I would highly recommend this company for any heating and cooling work.
"
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+1

5 neighbors recently requested a quote
Recommended by77%of homeowners
Avatar for Best Rates Heating and Cooling
Best Rates Heating and Cooling
4.8(
144
)
Central A/C - Install

Serving Oswego, IL and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"I needed a new air conditioner for this coming spring and summer I had a couple companies lined up to come to my home here in Bolingbrook, from Best rates heating and cooling from Oswego came out with his daughter, and he noticed that the furnace was giving issues. He asked me if there was anything going on, the amazing part about it is I went down with both of them even his young daughter who is nine years old asked his father and said hey Papa, the furnace is not supposed to be making that booming sound right thatâ s when I knew that I was gonna be going with this company for his daughter to know at such a young age how a furnace should operate he responded with. Itâ s not operating well but weâ re going to figure it out. Keep in mind I had called him for the air conditioner on he checked the age of the unit and the brand-name and he brought me up to speed. My unit was 14 years old after he said what was causing the booming sound was that I had a flexible gas line and he said that he would repair it for me. He also went above and beyond and check the inside of the furnace and the condition with his camera and I saw that it was rusting up in the inside. His professionalism was great he said we can continue to the just AC If you would like to, but you may only have a couple years left. He gave me both options for both. I went forward with him. Right away You canâ t shop that type of customer service. The morning of the install it was raining I thought to myself maybe they will reschedule Shirley enough. They showed up at 7 AM at my doorstep ready to rock â nâ roll. Ish and General Sir good morning and put down flooring cloths and they continue to do the install even in the rain. These guys worked hard and Iâ m excited to use my new Wi-Fi thermostat. They even help me and was patient enough to set it up the WiFi thermostat because I forgot the password and the installation is Came out perfect way better then I expected. Definitely recommend them.! Ask for ISH!!!!! Thanks guys"
Project Photos
Response time10 hrs
23 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for One Hour Heating and Air Conditioning of Naperville
One Hour Heating and Air Conditioning of Naperville
5.0(
10
)
Central A/C - Service or RepairCentral Air Cleaner - Repair or ServiceCentral Humidifier - Repair or Service

Serving Oswego, IL and surrounding areas

Approved

In business since 2022

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! Call Today!

My jobs
My jobs
Response time2 hrs
Response rate96%
3 neighbors recently requested a quote
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FAQs for air conditioning projects in Oswego, 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 Oswego, IL homeowners’ guide to air conditioning services

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