JML Heating & Cooling

We diagnose and fix furnace issues promptly to restore warmth during cold months. Our technicians handle repairs for gas, electric, and high-efficiency systems, ensuring safe, energy-efficient operation. Serving residential and commercial clients, we prioritize emergency repairs within hours.

Upgrade your summer comfort with expert AC installation from trusted brands. We assess your space, recommend energy-efficient models, and ensure seamless setup for optimal cooling. Backed by warranties and free follow-up inspections, our installations maximize performance and longevity.

Regular boiler maintenance prevents breakdowns and extends system life. Our technicians inspect components, clean burners, and test safety features to ensure efficient operation. Scheduled maintenance plans reduce emergency risks and lower energy costs for homes and businesses.

We replace failed or aging water heaters with durable, energy-efficient models. Offering tank and tankless options, our installation includes proper sizing, venting, and disposal of old units. Emergency replacements ensure uninterrupted hot water access for residential clients.

Our 24/7 emergency service responds to urgent HVAC failures, restoring comfort at any hour. Whether a furnace outage or AC breakdown, we dispatch certified technicians immediately. Guaranteed response within 30 minutes during service windows.

Yes, we provide 24/7 emergency support for urgent heating or cooling issues.

We serve Chicagoland, Northwest suburbs, and surrounding Illinois communities.

Yes, we offer free quotes for installations and major repair services.

All our HVAC technicians are fully licensed and certified.

We service and install major HVAC brands for residential and commercial systems.

Critical: Professionalism Just wanted to Share that I've seen one of their vans cut off incoming traffic from both sides also running their stop sign. Not a good look.

Once again JML did a stand up job! They replaced my old furnace. I have been using them for several years for a few units I own. They are always on time, complete work efficiently, and at a price you feel good about. I will continue to use them, and recommend them to family and friends. Service: Heating system installation

UPDATE #2 after 2months and having the credit card company agree that they overcharged me. The company FRAUDULENTLY RE-CHARGED MY CREDIT CARD. Maybe I need to file a law suit against them for using my card without my permission. UPDATE:: just received a call from JML fasted they have been with service. I was told they saw the reviews and they would be happy to refund me my money but they need to come take the gas valve and thermostat back.

No sorry for your experience. No sorry you feel cheated. No how can we make it better. PURE TRASH! ------------- They charged me $150 for a $50 thermostat and $500 for a $145-$200 gas valve. I had to wait and waste my time because they were not prepared with the necessary parts. A job that should have been started and completed on Thursday was completely Saturday morning. Not to mention they were late consistently.

Never again! I have already requested a refund for the overpayment. Taking advantage of people is not ok. Times are hard enough but the level of deceit lets me know they will never set foot in my house or any of my family in the area.

I was in a real pinch and these group helped me out fast. They were fast, efficient, and fair. Will no doubt use them again.

JML came out on a Saturday to assess my AC issues and replaced my AC soon afterwards. Jon, the owner, is great to work with and the guys who came out to do the work (Rudy and Mike) were also fantastic. Margie in the office returns all calls quickly and was a pleasure to work with. Highly recommend JML and will use again for all of my heating and cooling needs.