If you are looking for a local business that genuinely cares and is invested in its community, then I strongly recommend using Leith. I had my A/C and humidifier replaced this week. From the moment I submitted a request to talk with someone, I received prompt and clear communication from everyone I worked with at Leith. They stopped by my home to learn more about my home, family, and needs. Jake provided me with clear options, answers to my questions, and recommendations that matched what I was looking for with the project. They gave me options and quotes that let me feel in control of a big purchase. I never once felt pressured into spending more than what I was looking for and they were flexible to my needs instead of the other way around. They completed the project quick and the new unit worked great. Jake, Brian, and the team checked in from start to finish and I won't use any company but them for any future projects! read more

Rip off! Stay away from this company. Charged 500 dollars for a 40 dollar part with labor that took 30 minutes. Takes advantage of elderly people. Also, had them do a furnace cleaning. Just as dirty inside the compartment as before they came. And left dirt on the floor. Vacuum maybe?! read more

Jake came out to give me an estimate on a new furnace. He was very knowledgeable and friendly. He spent atleast an hour going over what would work best in my home. I had the estimate emailed to me within 24 hours There were two choices to choose from. Good and better. I chose the better,and their prices seemed competitive. On the day of the install, the two young men were friendly and knowledgeable. They had my new furnace installed within 3.5 hours, and completely cleaned up everything, and took the old furnace away. It looked perfect, and you'd have never known I just had a furnace installed. I am completely satisfied and would recommend them for any heating or cooling problem that you have. read more

I'm disappointed with my experience with Leith Heating and Cooling. I called them out for what turned out to be a simple capacitor replacement on my AC unit. Yes, the technician was polite, and the ac is working again, but in my opinion the charge for the repair was extremely high ($392 for parts and labor, and $129 for diagnosis $521 total.) I suggest anyone reading this gets a second (or third) quote before letting Leith Heating and Cooling make repairs. read more

My husband and I woke up this morning to find our furnace not working. It's winter, and we have a newborn, so we wanted the issue taken care of quickly. I found this company through their highly rated Yelp and Google reviews. A service rep, Sean, came out to our home within two hours of our call. Fortunately, our issue required only a minor fix. Sean took the time to explain the issue to my husband, and he got the furnace up and running in no time. We will absolutely call Leith if we experience an issue like this again. Great company to work with! read more

Excellent service by technician Sean today. Furnace was not working properly and technician was out 2 hours after call. He diagnosed the problem immediately and fixed the problem with no hassles. Thank you Leith and Sean! read more

Such nice people. The woman who took my call was very kind and helpful and the techs we really nice, professional and quick. A really good experience!! read more

Sam from Leith was very efficient and quickly found my AC issue. I recommend him for your repair issues and maintenance needs.

Where has this place been all my life! I don't know what their strongest suit is, their unbelievable fabulous customer service, their expertise on their profession, the pricing, or their ability to restore my faith in service contractors. I have, and always will highly recomment Leith Heating and Cooling to anyone and everyone who will listen. The comfort zone I have with this company cannot be compared to anyone.. They rock! read more

Just had Leith Heating & Cooling replace my old thermostats with two new Honeywell T4 Pros. Very happy with the service, very happy with the cleanliness of the service professional and VERY happy with his discussion and explanation of the usage. Thank you, Brian ... I know I can ALWAYS trust your company. read more

Been working with Leith H&C for 2 years now and they have been nothing less than spectacular. Friendly, professional, straight shooters. Great during an emergency and for just regular checkups. You can't go wrong with them. Thank you for your entire team!!! read more

I called Leith with a random query about air quality, so owner Brian Leith briefed me on air scrubbing systems. I invested in an "air scrubber" two weeks ago to help kill germs, ordinary household odors, and purify the air. I've often imagined what it would be like to hike in the mountains of Switzerland, deeply breathing in the world's freshest, most pure air. Since Brian's team installed the new air scrubber, "Swiss Air" isn't just an airline --it's the O2 in my home! It's like Leith just piped in our entire air supply directly from the top of the Matterhorn! I highly recommend the air scrubber. Our allergies have improved and we're all sleeping much better. Even better, I received a discount because of the annual HVAC service plan we already had in place with Leith Heating & Cooling. Another bonus: I like supporting veteran owned-and-operated small businesses like Leith Heating & Cooling. read more

Our A/C went out over the weekend and I called Leith at 8:55am this morning and Bryan was out here by 9:30am. After having Bryan come out I would never go with anyone else. Super nice guy and felt he was VERY honest not looking to nickel and dime ya and he explained everything he was doing in a way that it made sense to me and I appreciated that. I understand why they have the reviews they do. If your in need of any heating and cooling issues do not call anyone else you will not be disappointed with Leith. Thank you again Brian for being so wonderful I will be recommending you to everyone! read more

We called at 1 PM and they had it fixed by 6:00. Very responsive, repairmen we're great and great at explaining the problem. They gave us repair options and didn't pressure us. Highly recommend! read more

Leith provides tremendous service. Brian sourced a part for our older furnace, and Rocco's professionalism during the service call was excellent. Great people. Great company! read more

Here is why you want this company for your HVAC repair or replacement needs: They are HONEST. Instead of insisting on replacement immediately as other companies had done. Leith addressed the source of the problem with my air conditioning and repaired it. The unit has been working great. It is so hard to find honest reputable companies these days, so I am writing as a strong testimonial for Leith. Good job guys and keep it up! -Paul Hardt. -East Dundee, IL read more

Brian and Rocco are the most trustworthy mechanics I have ever hired to do a job. Thorough, Honest and very polity. I was quoted a higher price than the final bill was, who does that? I will only use Leith Heating and Cooling from here on out. read more

We bought a new house and wanted to have the furnace checked out before winter hits and have it serviced if needed. The tech, Matt, they dispatched out was fabulous. He was friendly, knowledgeable, and thorough in his work. Matt explained what he found, offered suggestions, and was proactive. I greatly appreciated it. I will continue to use Leith Heating & Cooling. They have my trust. We plan on having them come back out in the spring to check/service air conditioner. read more

My heat kept shutting on and off, intermittently... tried figuring it out myself, no luck. Thought it was shot. Called Leith expecting to pay $$$ to replace or repair. Turns out, a sensor had some funky buildup on it, and just needed to be cleaned. Leith's honesty and fairness in pricing has made us clients for life. I could have totally been taken for a huge repair bill and not known the difference - but they were HONEST! So thankful to have found a locally owned place to take care of my schtuff in the house!! read more

Well, it has been one year since we had the new furnace installed by Leith Heating and Cooling and our house is toasty warm! Definitely an improvement with furnace efficiency. The service, communication and follow through was great. Thank you! read more

Brian checked my aging AC unit and found it needed to have a capacitor replaced and a bit of coolant. He did the work and now it's almost as good as new! I appreciate the fact that he carefully checked the unit and repaired it rather than just trying to sell me a new unit. He says I could easily get 4 or 5 more years out of this one. Brian and his associate were both friendly, courteous and professional. read more

New customer with Leith. Very responsive and professional and, most importantly, I trust Brian.

Brian has been my HVAC guy for years now and he is as honest as they come he is the only service man I know that shows up on time everytime, I would not do business with any other HVAC Company but Leith. read more

I used Yelp to search for a quick service call to inspect and clean my furnace and used the quick quote feature which works awesome... saves me time and money on guessing which company would be reliable and affordable. Leith HVAC responded quickly and was in-line with other quotes I received. They did a follow-up call the next morning and said a tech can be out there during my window of availability... now that's service. The whole process was under an hour, and the tech was professional and courteous. Quick pay, electronic invoice, the way I like it. I recommend Leith for your HVAC needs! read more

Brian and his team are terrific. I have been using Leith for many years. I was extremely happy when I discovered that they serviced our new home in Naperville. Leith has never left us thinking we were scammed or we paid too much for the service. They always let us know what is going on and are always willing to share knowledge about our current systems. They also are great on sharing options to improve things in the future. When anyone needs HVAC service, I don't hesitate to bring Leith into the conversation. Top notch all the way! read more

Had Rocco and Matt come out to install a whole humidifier for my new home that the builder did not install. Brian gave a great recommendation with a reasonable price. Great communication through the whole process. They also hooked up my fresh air ventilation system that the builder installed but never wired. Rocco and Matt were very clean, efficient and courteous. Would recommend them to anyone. Thank you. read more

If everyone provided the type of service this company provides we would all be happier people. I am compelled to write this review because a stellar service like I experienced today has to be recognized. I only picked Leith Heating and Cooling due to their reviews and now see why everyone ranked them like they did. Rocco was amazing in his advise and meticulous detail to everything, but the amazing experience started before that when I spoke with Chloe at the office, who was very kind and understanding of my haphazard schedule and to try and fit an appointment in. I have used services of several companies over last 15 years for my home and some were good, some were not so good, but I mean it when I say that these guys provide a level of service I have not seen before. read more

Brain is AMAZING!!! Super HONEST & great work!!! I know have a forever Heating & Cooling guy!!!

I used Leith Heating & Cooling in 2008 for a cleaning. They responded quickly and were competitively priced. During the cleaning, I learned that my furnace needed major repairs. Contractor Brain was very professional and suggested several options with one being replacement of the unit. There was no pressure sales but I did chose to purchase a new furnace in the end. Installation was quick and also competitively priced. I would recommend this company to my friends and family. read more

Excellent communication, extremely professional and knowledgeable and very patient. Rocco was great! A customer for life!

I cannot say enough good things about Leith Heating & Cooling. After trying to figure out an HVAC issue for two years, Brian Leith came to our house and spent an hour investigating the problem. He finally figured out a solution that saved us thousands of dollars. He is smart, professional, and creative. This is a knowledgeable and honest company. Very grateful to Leith for their amazing service! read more

Our AC stopped working after long hot summer weeks. Tenant called a service man for emergency check up before reaching us, they found icing on the outdoor unit, quoted two grand to repair and five grand to replace. When we got quote, immediately called Brian Leith because we trusted him over the years, and he installed and maintained two furnaces. He got call and arrived within an hour because it was hot day, tenant need AC. He checked the system completely, measured the pressure, figured out the root cause due to the blockage of the heat exchange, and cleaned up, everything works well and stay there making sure everything was working, explaining it to tenant. He only charged flat fee for this repair, not trying to sell me anything. At the end, he coudl easily charge way more that comparing to the other service guy. Once again, he proved himself, a very honest man. He is very skilled, I saw his work before while he installed and maintained our furnaces in multiple properties since 2004. Service company like this, it is hard to find these days. I wish he could do business beyond just AC, then he can take care all our rental repairs then we have piece of mind. read more