Get Quotes Contact Us Sign In
Website
Call
Miller's Area Heating Is your furnace acting up, blowing cold air, or making too much noise? Don't get left in the cold! Our experienced team of professionals is here to keep your home or business warm and cozy. Miller's Area Heating is the leading company for all of your air conditioning and cooling needs. Our technicians are qualified professionals who will get the job done right for your home or business. Regular HVAC maintenance not only increases the reliability and efficiency of your equipment, it also extends its lifetime.
Follow us
Services
Miller's Area Heating and Air Conditioning was founded in 1948 by two zealous hardworking men known in town as the Miller brothers. Jim and Ray Miller started with just one truck and a truckload of know-how and integrity. They found the town of Grayslake an ideal place to build their dream; so a location in the center of town was chosen as their business location, and after all these years the address is still the same.
Miller's Area Heating proudly provides HVAC service to Grayslake, Libertyville, Round Lake, Wildwood, Ingleside, and the surrounding Illinois communities. Visit our service area page for more coverage details, call us at 847-223-0211, or request service online today.
Miller's Area Heating is your #1 Commercial HVAC contractor in Grayslake, IL, and the surrounding communities. When your air conditioner needs service we are the leading choice for all of your company's cooling needs. If you need repairs, maintenance, or a brand new system installed, the technicians at Miller's Area Heating are the qualified and professional crew for the job. We provide the highest quality service for your commercial air conditioner and beyond. We also aim to educate and inform our customers.
Miller's Area Heating is the leading Commercial HVAC company in Round Lake, IL, for your company's heating needs. We install, service, and repair all commercial makes and models. If you need heating service, we are the company to call. Our skilled technicians are qualified to solve just about any repair or installation that you throw at us.
Reviews (19)
Write a Review
Erin Weber
May 18, 2022
Maria was great at taking the details of my issue, up front about cost, and clear on times for expected arrival. Technician (Josh) was on time, professional, very knowledgeable and happy to explain repairs and cost. I wish their bill was itemized so I can review or ask questions. Overall great service. Would highly recommend! Service: HVAC system repair
Tim Scardina
May 15, 2022
Honestly the best experience I have Ever received from a heating and air company. Local and customer service is amazing. They truly care about the client and do amazing work at a cost effective price. So happy to have found this gem! Services: Installation, HVAC system maintenance
Paula Gill
May 12, 2022
All technicians were on time were very professional. They put down a protective covering for our flooring they all wore masks. They were very responsive and answering our questions and explaining our new system. I would highly recommend this company. Service: Install AC
Aaron Purol
Mar 14, 2022
I'm prefacing this by saying this all took place while I was present, asking quite a few questions, and observing the entirety of the technician's process, without feeling pressured from anything he had offered me. Shane arrived soon after I had called about a leak in my water heater. He was able to deduce the problem and solve it quickly. He then offered to do an inspection and maintenance on my systems, including furnace, water heater, and AC when weather permitted.

I agreed after he had told me cost and an explanation of the savings for bundling them. His furnace inspection was top quality. From cleaning the dust and doing a wiring inspection, to removing and cleaning burners. He had found a water pressure problem in a valve for my humidifier. Shane gave me pricing and the ability to fix it then and there. The fix of this led to another problem, which previously wouldn't of been able to be seen.

This second problem was my solenoid which wasn't functioning properly given the water pressure going through. He was able to price me on that and get it replaced as well. None of the price was hidden, and he had answered all of my questions about his process, and why he was doing everything. I highly recommend Miller's.
Joe Davila
Feb 27, 2022
Woke up to a 60 degree house, checked the boiler and could not keep the pilot lit, I knew it was the thermocoupler but having no parts store nearby, called Miller's. They answered immediately and were able to get a service tech out within the hour which was outstanding. On arrival, the tech, Joe, was very professional and courteous, he looked at the boiler and confirmed what I thought, he replaced it then educated me on how I could save a bit of money by signing up for the annual maintenance versus straight service call. It made sense, he did a great job and got me back up and running in a short period of time. I will definitely use this company again.
Niki M.
Feb 24, 2022
I contacted this company via referral from a neighbor whom had utilized their services for furnace repair in the past. I could not be more thankful for Miller's Area Heating! My newer furnace went out during this freezing weather, and this co. took care of my issues immediately! Not only was the technician, Josh, prompt, he was professional, well-mannered, kind, and extremely knowledgeable!

My furnace had so many issues going on with it, but Josh contacted his manager, John, as well, and they worked diligently to get heat running ASAP for my daughter & I! They also teamed up with their office staff, who treated me like family, to get the parts expedited! I'm so grateful and appreciative for this company! If you're ever in need of HVAC, these beautiful, educated, essential workers know how to take care of their customers! Thank you Miller's Area Heating! #imafan
Matt Blair
Jan 08, 2022
I'm very happy with my experience with Miller's. Everyyone I have talked to has been very pleasant, patient, knowledgeable and helpful. From talking with the owner after business hours to pestering Holly with a bunch of questions, they were just great to work with. They were able to get a new furnace installed very quickly and for a fair price. I would HIGHLY recommend Miller's to anyone looking for HVAC needs. Thanks again Miller's!
Jill Rohrer
Jan 07, 2022
The technician was so professional and listened to my concerns about the furnace and about challenges I had with a different heating and cooling company as he was running a test. He didn't react to my concerns but clearly understood. The repair was done well and he did an excellent job! With gratitude!
Russell Tkach
Jan 04, 2022
The best HVAC company in Grayslake area. Absolutely professional install and service departments. Strongly recommend.
Ward Feger
Dec 29, 2021
Based on reviews, I decided to use Miller for my HVAC check ups. First came the A/C check-up last spring. Everything seemed fine until he left and I noticed he left my garden hose unrolled from my back yard to the side where the unit was, and the water still running. I wasn't too annoyed, just thought he forgot. Decided to sign up for one of their maintenance contracts. Called them to come back out in the fall for the furnace and humidifier check.

Also asked them to install a new thermostat (an Ecobee they advertise on the website). I get a call less than 30 minutes before he is supposed to show for my scheduled 8:00 AM appt. Said they are short a technician and wanted to move the appt to a time frame the next day. Felt I had no choice by the callers tone. Same technician as from the spring.

He installs the thermostat but does not clean up the drywall dust from pulling the old one (see picture). I noticed later that he didn't even install the mounting plate so it is secure on the wall. Only used one screw, so now the mounting plate moves back and forth. He put a note on the spring receipt that I needed a new 1/4 turn valve for the humidifier since the current one is not code.

I asked him if he was going to do that and I got "Oh, you want that done today?" in a tone like he was annoyed. Now he had to go back to the shop to get something. Guess they don't look at previous receipts to see what the customer might need. I knew they were going to cost quite a bit but expected better service for as much as I paid.
Naomi Moderson
Dec 27, 2021
We bought our AC from Miller's and have used them for annual maintenance for both our furnace & AC. The technicians have always arrived on time and always have the time to answer any questions. Would recommend. Service: Heating maintenance
Synestraa
Dec 22, 2021
I recently bought an Ecobee 3 Lite during Black Friday sales and we tried installing it ourselves. Unfortunately nothing was labeled on our furnace so we were unable to do it ourselves. We tried hiring a handyman but unfortunately he was unfamiliar with our furnace as well. I work close to Miller's Heating and decided to reach out to them. What I love about that process was that it was all through email.

I am usually busy most of the day and setting time aside for a phone call can be difficult so I loved that email was an option. Other companies I looked up did not give email as an option for communication. I was so happy to find out that email was available for a quote and to set up the appointment. Our technician was also extremely nice and courteous.

Unfortunately neither of us got his name down but he was very nice and knowledgeable and quick with the work as well. Explained the process and how things worked with the furnace plus the thermostat. Super quick and easy. I would definitely recommend Millers Area Heating for any of your HVAC needs. Extremely nice and great people!
Jeff Pritchard
Dec 19, 2021
Joe assisted with identifying a faulty thermostat as the wise our furnace would not start. He offered alternative resolutions and tool the time to explain the furnace configuration/setup in detail. Very professional and friendly local service. Thank you. Service: HVAC repair
Diane Osburn
Dec 05, 2021
Miller's Area Heating was able to help me out right away. They are very friendly and helpful. They always resolve my problems. They do a great job! Service: Heating system repair
Jefferson McMillan-Wilhoit
Nov 23, 2021
While I originally gave Miller's a 5-star rating because of the yearly furnace tune-up they provided, I just had them come back out because our pilot light went out on one of the furnaces. The same technician (Josh) who worked on our system last time was the one who came out this time. He quickly diagnosed and resolved the problem. And, because we had a maintenance contract with Miller's, the service call and repair was covered.

Not saying that will happen for everything (the part that was out was minimal), but I was thankful to have the maintenance contract. Overall, both times Josh has been out, he has been courteous and kind, explained everything well, and took very good care of our system. I am thankful to be able to support this small business of Grayslake, especially one that does such wonderful work. I would highly recommend using Miller's for your next HVAC need.
Ogelini Thirston Iii
Nov 13, 2021
Extremely appreciative of the quick turnaround and repair on my furnace today. Called about Noon, diagnose and repair by 2pm. Knowledgeable staff and techs, so professional and fast! I definitely recommend!
Melissa Leaderman-Pekofsky
Oct 13, 2021
We recently switched to Miller's and they are amazing! Very thorough and great a diagnosing issues! We highly recommend them!
Lisa LoMonaco
Sep 17, 2021
Great service at a fair price. My technician was courteous and honest.
Amy S.
Aug 16, 2021
We were absolutely satisfied with the no pressure estimate and install for replacing our old boiler. Miller's installed a new condensing boiler within our price range and everything was timely, professional, and easy! Miller's answered all of our questions (we had a lot!) and had excellent communication all around. Services: Installation, Heating system installation, Thermostat installation