Approved Comfort is a family-owned an operated HVAC company, and we’ve been serving homeowners in Lake in the Hills since 1993. In over two decades of service, we’ve satisfied thousands of customers, and new loyal clients and partnering with us everyday. We’re proud of our reputation and of the service experience we offer homeowners in Illinois. Call Approved Comfort for home HVAC service you know you can rely on!

Want to know more about our quality standards? Why not find out from the customers themselves!


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Hear what our customers have to say!

“Technicians were prompt, courteous and efficient. We needed work completed quickly and the technicians worked overtime to complete the work to fit our schedule. We are very satisfied”

-Gary Mellini

“We had Approved Comfort install our brand new furnace and air conditioner. Both units look and work great, I must say Approved Comfort did an amazing job. My husband and I are so happy with the job that was done, it was just as we expected. I recommend that everyone uses Approved Comfort!!”

-Mary Westenberger

“We had Approved Comfort come out to do our annual spring cleaning on our air conditioner last month. They did a great job and after they left I told my husband that it’s working like it’s brand new. It’s always great service with Approved Comfort.”

-Fran Korzen

“When Approved Comfort came out to do my annual cleaning on furnace they did a fantastic job. Not only did they clean the furnace but they also replaced my filter and humidifier pad. They always have excellent service and are very helpful.”

-L. Queen

“OMG!!! Jorge showed high levels of Professionalism while he was here working on our building. He walked me through step by step on what he was doing and I really felt taken care of. I am very happy that Jorge is part of your team.”

-Marco Silva El Caf

“Jorge who serviced my furnace and air conditioner is a very polite, kind and most of all an honest man. You guys always do a nice job cleaning and maintaining my furnace and air conditioner. I will refer Jorge and Approved Comfort to everyone I know.”

-Alma Johnson

“We had our new furnace installed by Approved Comfort and the job they did was amazing. They quoted everything for me one day and installed the next. My family and I are very pleased with how professional everyone was and how great our furnace looks. Thank you Approved Comfort!”

-Steve Hunter

“Originally the filter rack was installed underneath my furnace. When I recently had my furnace replaced by Approved Comfort and they set up my filter rack above the furnace so I wouldnt have to bend over every time I needed to replace them. They redid my duct work above and under my furnace and I must say it looks great. Another fantastic job done by Approved Comfort!”

-Mr. Powell

“Approved Comfort is my heating and air conditioning company of choice. They are always on time, they do a fantastic job and everyone is always so helpful. The technician took the time to explain to me everything I could do to help keep my furnace running smoothly. The cleaning not only makes my furnace run great it also looks nice. Thank you Approved Comfort”

-Linda Williams

“I am very impressed with how quickly Approved Comfort not only quoted a new furnace but how fast they got the ball rolling to have it installed in my home. The installation went smooth and the furnace works perfectly.”

-Woosoo Chun

“We shopped around for weeks for prices on a new furnace and air conditioner for our home. Approved Comfort not only had the best price around but also could install the systems the very next day. We got such a great deal that we decided to have them install a humidifier as well. All three systems are working great and we couldnt be any happier. Two thumbs up to Approved Comfort and all their employees.”

-Mary Westenberger

“I called Approved Comfort as soon as I noticed there was something wrong with my furnace. The technician came out to my house and noticed that my control board was bad. He replaced it and now my furnace is running great. The technician was very nice and helpful. Thanks!”

-Agnieszka Dzwinacka

“I scheduled my annual furnace cleaning with Approved Comfort and I must say my furnace looks and runs great. Excellent job!”

-Mr. Ohlson

“When my humidifier wasnt working correctly I had Approved Comfort come out and take a look at it. After only five minutes the technician noticed that there was a broken water feed tube at my solenoid valve. I had no idea what any of that even meant so the technician explained it to me. I gave him approval to fix my system and it has worked perfectly ever since. I only call Approved Comfort for all my heating and air conditioning needs. You guys rock!!!”

-Sheva Wohlhart

“When I needed my furnaces cleaned in my home I called Approved Comfort. I was put on the schedule that very same day and the service was EXCELLENT. The technician came out cleaned both my furnaces and did a free dryer vent inspection. Both of my furnaces are looking and running great and I would recommend Approved Comfort to everyone. Thank you!”

-Marguerite Weadley

“Approved Comfort always comes out and does my annual cleaning on both my a/c and furnace. I always appreciate the job they do when they are out here. Not only did they clean my furnace but they also replaced my filter and humidifier pad for me. Great job Approved Comfort!”

-T. Barrett

“I noticed that I had a gas leak on my furnace so I called the professionals at Approved Comfort. When the technician arrived he noticed that I also had a gas leak on my dryer as well. Both of my leaks were fixed and I feel comfortable knowing my family is safe. Thank you Approved Comfort!”

-Gerald Jonas

“Thank you Approved Comfort for the quick response in getting our new furnace installed.”


“Approved Comfort came out and cleaned our air conditioner and they did a fantastic job. They did such a great job and Tony the technician made such a great impression that we were eager to resign our preferred customer maintenance agreement. Always great service!!!”

-Patricia OToole

“I woke up one morning and it was freezing in my house so I immediately called Approved Comfort. There was a technician in my area and within an hour someone was at my house. In less than fifteen minutes they knew what the problem was. The technician had the part in his vehicle and it was installed in less than thirty minutes. I am very impressed with the service.”

-Tammy Armstrong

“Approved Comfort came out to do a schedule cleaning on my furnace. The technician did an amazing job cleaning my furnace, he also changed my filter and humidifier pad. I was totally unaware of how important it was to change your filters and pad regularly. Joseph our technician took the time to explain to us how to identify the brand, type and size of filters and pads we need. I was so impressed that not only did I become a preferred customer, I also recommend Approved Comfort to everyone I know.”

-J. Kedvesh

“We have been a preferred customer of Approved Comfort since 2010. We love the service and even better we get preferred customer pricing. I also like that we never have to worry about our heating or cooling systems. Much appreciated.”

-Sherman Family

“I recently became a Approved Comfort preferred customer and I must say they do a terrific job. They sent over a technician to clean my furnace and he was very knowledgeable and helpful. He took time to explain everything to me and also made some recommendations to help me keep my furnace in tip top shape. Great service!!”

-Gerald Taylor

“I always appreciate the work Approved Comfort does to my heating and air conditioning units in my home. The customer service is spectacular and their technicians are all great guys. I would definitely trust Approved Comfort with all your heating and cooling needs.”

-Carmelo Palumbo

“I had Approved Comfort come out to my house to do a clean and check on my furnace. I must say the service was excellent. Joe, the technician was very helpful and knowledgeable. I couldn’t be happier with Approved Comfort Heating and Air Conditioning.”

-Bryan Harp

“I have used Approved Comfort for both my air conditioning and heating needs for many years. In addition to keeping me informed on my appointment and sending me reminders, the technicians are very conscientious and thorough in explaining what they are doing and in giving options when required. Our neighborhood has experienced a few crises over the years, and Approved Comfort was able to be available to meet our needs at all hours of the day and night. On several occasions the owner has personally come to follow-up on an installation or service call.”

-Mark Binder

“Approved Comfort has been my HVAC company since 2006. Every year they come out to do the annual maintenance on my furnace and air conditioner, and on occasions they have come out when my furnace or air conditioner have been out, like was the case last month. I called them out because I was having problems with my furnace, they quoted me to repair it but it made more sense to have it replaced, so I decided to have both my furnace and air conditioner replaced. As soon as I made up my mind they scheduled my installation. The installer explained and showed me everything about the furnace and they will be coming back in the spring to start up my air conditioner. He was also very helpful on the things that I will need to do for future maintenance in order to keep my warranty intact.”

-David Siswen

“I was referred to Approved Comfort by a friend of mine and I called to get an estimate. The sales man gave me may different options without being pushy. I thought about it and made up my mind to go with Approved Comfort. A Couple of weeks later my new unit was installed, the installers explained to me how to replace my filter and how to work my new thermostat. A few weeks later Approved Comfort sent a technician to do a Quality Control on my new unit and noticed that a switch was in the wrong position, they changed it to the correct one, cycled my system and made sure that my unit was working properly, very nice people at Approved Comfort!”

-Jeanie Hohman

“I found Approved Comfort on the internet and scheduled a call on their website because my furnace was not working properly; since they were coming out I also booked a furnace cleaning to be done the same day. The technicians found the issues with my furnace they quoted the parts that needed replacement but they did mention that is would be more cost efficient for me to have the furnace replaced. I scheduled an appointment with Approved Comforts sales man and came over in that same week, l liked what he had to offer, and I loved the fact that he was not pushy so, a couple of days later I had a new furnace installed. The installation went smooth and the furnace works perfectly. Two weeks after Approved Comfort sent a technician to do a Quality inspection on my furnace and everything was good, I was so happy with the service that I purchased a Preferred Customer Comfort Plan. I get 2 cleanings a year, discounts on all equipment and repairs, and emergency calls PLUS if my air conditioner is low on refrigerant, the first pound is free! I will recommend Approved Comfort to my friends and family.”

-Woosoo Chun

“I have nothing but good things to say about Approved Comfort. I called them after having multiple companies coming out to my home and not finding the issue with my system. Approved Comforts technicians tried a few different options that didn’t work but they never gave up. They ask about a possible power surge and I told them that I did have one back in the summer; they pieced everything together and figured out that that power surge was the cause of all my HVAC problems. They worked together with my insurance, billed them for every service ticket that I had paid AND they also paid for a new furnace. The new furnace was installed ASAP and everything was been working great since. I just wanted to thank Approved Comfort for all their help since day one and for getting everything set up with my insurance!”

-Kathy Everly

“The furnace failed in my house in Lake in the Hills. So I called Approved Comfort Heating and Air conditioning. After only 15 minutes, George the technician had diagnosed the problem we had been having since 2007. George is a awesome tech and should be recognized for his outstanding service. I would recommend Approved Comfort to all my friends and family for any heating and air conditioning needs. Two thumbs up!!!!”

-G. Peterson

“I recently called Approved Comfort because I had water leaking from my water heater; they sent some one out right away to look at it and determined that I needed to replace it. I loved the fact that the sales man was not pushy, he gave us options, gave us our time to think, we liked the deal we were getting and had a new hot water heater installed immediately. The installation went great! They sent another technician to do a quality control check to make sure that the installation met their standards. He was very professional as are all the employees at Approved Comfort that is why we have been working with them since 2007!”

-Mr. and Mrs. Small

“I had Approved Comfort come out to clean my furnace and I must say they did a terrific job. My furnace looks and runs great!!! Thanks Approved Comfort!”

-Judy Gilbert

“All of the service technicians over at Approved Comfort are super helpful. Especially Tony, he took the time to explain to me what was wrong with my furnace. The hot surface ignitor needed to be replaced and he had one in his van. He fixed my furnace, replaced my filters and cleaned my dryer vent. Tony is a nice man and I always receive good service from Approved Comfort.”

-Paul Fivelson

“I just wanted to say thank you to Approved Comfort for all their hard work and understanding. You guys do a terrific job.”

-Janice Baker

“I called Approved Comfort for my routine furnace cleaning. During the cleaning George the technician realized that I needed to replace my hot surface ignitor. The furnace was cleaned, a new ignitor was installed and my dryer vent was also cleaned free of charge. My furnace is running great and I have Approved Comfort to thank for it. Thanks Everyone!”

-Vicky Gesinger

“When I needed to replace the furnace in my home I called the guys over at Approved Comfort. They did a wonderful job installing my furnace and it was excellent service. My family and I are very pleased with Approved Comfort.”

-Seth Tapins

“I have been an Approved Comfort preferred customer for years and I think they do an amazing job. I wouldn’t trust anyone else to clean my furnace. Thank you, Approved Comfort!”

-Ralph Wehner

“I needed my whirlpool dryer vent cleaned so I called Approved Comfort. The technician was a pleasure to have in my home and did an excellent job. I would recommend Approved Comfort for all your heating and air conditioning needs.”

-Allan McGlothlin

“Your team was superb, very meticulous while installing new Bryant A/C.”

-Orey & Lucia Buzzelli

“Thank you Approved Comfort. You saved the day. I almost lost all of the food and supplies in my commercial walk-in refrigeration unit. Thanks for repairing it. Dinner is on me.”

– Bobby G. Restaurant Owner

“Our service tech was knowledgeable, thorough and explained everything as he went through his 25 point check list. He made sure to check filter, and explain the importance of changing the filter. He checked the wiring, refrigerant, breaker, he left our unit factory fresh! He offered us a free dryer vent inspection and explained the hazards of a dirty dryer vent. Quite impressive knowledge base with the customer’s needs top priority! Thank you!”

-The Larsons

“Approved Comfort heating and air conditioning installed my furnace in one day and I got the best value I could have gotten. I have been doing business with them for over 6 years, and every time someone comes to my home to repaire or install my furnace and or air conditioner, I am treated like a new customer. The office is always professional and courteous, just like the service technicians and even the salesman Dave. The sales aspect was educational and it appeared to be over promised, but to my surprise from the drop cloths on the carpet, to the thank you hand shake at the end, I was under promised and over delivered when it came to my furnace installation. Living in the Boulder Ridge subdivision in Lake in the Hills, I am always sceptical to businesses that want to raise their prices just because of where I live. Approved Comfort Heating and Air Conditioning was priced right. Thank you guys and gals, I will see you for my annual maintenance next year.  Thanks!”

-The Ryans

“I purchased a Comfort Plan which includes my air conditioner maintenance and my furnace maintenance but what I also explained about the plan is that being a preferred customer I save $49 on my cleanings, value rate discounts in all repairs, 5% off any equipment or accessory purchases, $25 off any emergency service calls and my first pound of refrigerant is FREE! I had my air conditioner cleaned under my plan and they also inspected my dryer vent for free! They did find the vent was dirty and I asked them to go ahead with the dryer vent cleaning, since I am a preferred customer I received a discounted rate. Everything about the service was EXCELLENT, Completely Satisfied!”

-Janet Dengler

“I had a service tech come out to inspect my air conditioner because it was not cooling, upon inspection they found the air conditioner low on refrigerant. They installed easy seal to stop the leak, but I was told that if that did not work then the leak was not going be able to be repaired and that I would need a new unit. I had to call them out again because of another problem with my unit, after this we decided that it was best to replace the unit. They scheduled my install same day, everything was great.  As always- the best staff and techs anywhere”

-Kathy J Hendrickson

“From that our AC and furnace were installed in August of 2006, we have been totally satisfied with aspects of your company. Since we have had our yearly maintenance on both of our systems we have had no problems with our warranty when ever something is not working properly they come out and fix it with out us having to pay for parts. We have never had to wait for a technician because they are always on time!We will gladly recommend your company to your all of family and friends!”

-The Farleys

“I called Approved Comfort because I found their ad in the cash coupon book that I get in the mail. I scheduled an appointment with the salesman and he came out right away. He gave me such a great deal that I purchased it on the spot. Approved Comfort sent the installers and they were awesome! We will be talking again because I will be referring you to a lot of people, I am very happy with my purchase, with the service and I am going to spread the news. I just love that Salesman!”

-George Wallar

“I had an Angel at my house for service and his name was Gabriel! I have been an Approved Comfort customer since 2006, they installed new a new air conditioner and furnace in my home and we did have problems with the air conditioner but they replaced it under warranty. They have done the spring and fall maintenance every year since. Any recommendations that they have, I always have the choice to have them done or not, they do not do ay work with out me agreeing to it. The office staff is always courteous and helpful, technicians are prompt and service work is always performed to my expectations.”

-The Reuters

“We have been customers of Approved Comfort since 2008, we have 2 furnaces in our home one was replaced in 2010 and they just replaced our second furnace. We have always been happy with the service, that is why we always have them do the maintenance on all of our equipment and when time comes to replace equipment we have Approved Comfort do the work. They are always very thorough explaining all work that is being performed, always very courteous, neat, prompt and helpful, we even get a call in the spring and fall to remind us to schedule our maintenance! Thanks Approved Comfort!”

-The Debolts

“Our history with Approved Comfort goes back to 1998 when we called them to install our Humidifier and Air Cleaner installed. After that we have had them come to do the yearly maintenance on our air conditioner and our furnace. We signed up for Preferred Customer Plan and we have stayed on it since. In 2006 we needed a new Unit heater, and of course we had Approved Comfort install it, then in 2009 we needed to replace our furnace and they installed it, we got a 5% discount on the equipment just for being Preferred Customers! We have had a very positive experience with Approved Comfort through out the years, we are happy with the service. We just had our furnace cleaned and we just wanted to say what a wonderful technician you sent, thank you!”

-Tom & Maria Frankenfield

“Technician did a great job. He cleaned our air conditioner, explained everything he did step by step. He recommended a couple of items to ensure we are getting the max out of our system but he did leave a proposal behind for a new unit. We got a free dryer vent inspection and we were explained the hazards of a dirty dryer vent, when we saw the results of the inspection we decided to clean it right away. Work performed met our expectations!”

-John & Beth Gaudino

“Our technician was punctual very friendly and courteous, in fact he was able to arrive hours before the scheduled time which helped me greatly. The technician recommended that I purchase a Comfort Plan for the maintenance of my air conditioners and in the fall my furnace cleanings which saved me $117 and I get special discounts on repairs and equipment purchases,and I get other bonuses for being a preferred customer. I received my free dryer vent cleaning and they found my vent dirty, I was recommended the cleaning and I agreed. This fall they will be calling me to remind me of my fall maintenance, I dont even have to worry about scheduling that because they are taking care of me.”

-Bo Modzelewski

“I was impressed with the friendly and courteous attitude of my technician. He performed my annual air conditioner cleaning; he explained every thing he did step by step. I asked him to replace my thermostat and he did. He recommended that I replace my air filter because he found it dirty when he inspected it, he explained the importance of a clean air filter and of course I agreed to change it. He performed my FREE dryer vent inspection and told me that I did not have anything to worry about because it was clear.”

-The Iversons

“Last year at the yearly maintenance for my ac unit they discovered that my unit was leaking refrigerant. They added stop leak and added the refrigerant that had leaked, they did warn me that the work performed did not guarantee that my unit would not leak but they would reimburse me for half of the cost so I went ahead and had the work done. My unit worked for the rest of the season but this year when they came out again is was leaking. I decided it was time to purchase a new unit. Everything was great and as always the men are always working and cheerful and nice. I think Ill be happy with the new quieter unit.”

-Betty Borgeson

“We called Approved Comfort to do our annual maintenance on our air conditioner and they sent us an outstanding technician. He started up and tested our system, checked the thermostat for proper operation, checked the compressor and hosed it down,checked for adequate refrigerant charge and he also checked for any refrigerant leaks, he checked electrical components, voltage amp draw to all motors, he had our unit running factory fresh! He also recommended a surge protector and we decided to purchase it and he installed it right away. He checked our system again and had everything running great. Your technician is a real asset to the growth of your business!”

-Bob & Deb Gottschlich

“We had Approved Comfort come out in May to do our annual maintenance. The technician told us that our unit was at the end of its life span and that we would have to be replacing it soon, he also offered to leave us a quote for a new one but we decided to wait on that. In June we heard a loud noise coming from the unit, we called Approved Comfort again and they told us it was time for a new one. We decided to wait to have it installed until we returned from our trip so they ended up installing it in July. They came back to do the Quality Inspection and everything was great, your TEAM IS AWESOME!”

-Orey and Lucia Buzzelli

“I needed a company to come out and service my air conditioner so I went on the internet and I found Approved Comfort, so I decided to call them to have my air conditioner maintenance. My technician was so professional and courteous! He answered every question I had, he mentioned that my air conditioner is old but is still working and looks good. I know that it is time that I get a new furnace and he kind enough to leave me quotes on new furnaces, there was no hard sell and I appreciate that. I have to get that new furnace soon and I will definitely get it from Approved Comfort!”

-Lynne Pirkle

“I have been a customer of Approved Comfort for a few years now; they always do my yearly maintenance and safety inspections on my equipment. This spring when they came out they told me that my equipment was getting to its end life and that I would probably need to replace it soon. When they came out to do the fall maintenance they found 4 cracks in my heat exchanger. The technician had to shut it down due to safety issues. The technician quoted me on a new furnace but I decided to wait a little. I called back a few weeks later and Approved Comforts sales man came over and we purchased a new furnace and it was installed two days later. Thanks Approved Comfort!”

-Diane Flood

“Joe and Adam were very professional. Our chimney liner installation looks great! Thank you & Happy Holidays”

-Bob and Kathi G