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27 Years
experience
Emergency
services
Your Trusted HVAC Partner in McHenry, IL
Founded in 1999, McHenry Heating & Air has established itself as the leading HVAC service provider in northeastern Illinois. Our team of licensed technicians brings decades of combined experience in heating, air conditioning, and indoor air quality solutions, serving residential and commercial clients across McHenry, Crystal Lake, and surrounding areas. We specialize in 24/7 emergency repairs, system installations, and preventive maintenance, ensuring reliable comfort for every client.

With a commitment to excellence, we employ Trane Comfort Specialists and maintain rigorous licensing, bonding, and insurance standards. Our family-owned business prioritizes personalized service, competitive pricing, and community involvement, earning an A+ BBB rating and a loyal customer base through over 24 years of dedicated service.
Services
HVAC Repair Air Conditioning Services Heating Services Furnace Repair Boiler Services Indoor Air Quality AC Installation AC Maintenance Emergency AC Repair Trane Products
Details
  • Year established: 1999
Highlights and features
  • Over 24 years of experience in HVAC services
  • Licensed technicians with expertise in all makes and models
  • 24/7 emergency service available
  • Family-owned and operated since 1999
  • Competitive financing options with approved credit
Associations and certifications
  • Better Business Bureau (BBB)
What people say
Exceeded expectations Prompt service Professional technicians Saved money Honest pricing
Services
HVAC Repair
Our licensed technicians provide rapid diagnosis and repair for all HVAC systems, including furnaces, air conditioners, and heat pumps. With 24/7 emergency availability, we minimize downtime during critical failures. Our expertise spans both residential and commercial systems, ensuring efficient solutions for urgent heating or cooling needs.
Air Conditioning Services
From maintenance to emergency repairs, we service all AC makes and models. Our team installs energy-efficient units and offers preventive care to extend system lifespan. Trane product specialists ensure optimal performance, while 24/7 emergency service addresses urgent cooling failures during peak summer months.
Heating Services
We maintain and repair gas, electric, and radiant heating systems, including boilers and heat pumps. Emergency services restore warmth during winter outages, while annual maintenance improves efficiency. Our technicians handle installations of high-efficiency furnaces and boilers for residential and light commercial properties.
Indoor Air Quality
Our solutions include whole-house air filtration, humidifiers, and UV light systems to improve respiratory health. We install Trane CleanEffects technology, removing 99.98% of airborne allergens. Custom solutions address specific needs like static reduction, wood preservation, and allergy relief for homes and businesses.
Emergency AC Repair
Available 24/7, our technicians respond promptly to AC failures, even on holidays. Rapid diagnosis and repair services restore comfort during extreme weather. We stock critical parts for same-day fixes and provide transparent pricing for emergency service calls across McHenry County.
Questions
What HVAC services do you offer?
We provide 24/7 emergency repairs, installations, and maintenance for furnaces, air conditioners, boilers, heat pumps, and indoor air quality systems.
Do you offer emergency HVAC service?
Yes, our 24/7 emergency service responds to urgent heating and cooling failures, including holidays and weekends.
Are financing options available?
We offer competitive financing plans with approved credit for HVAC system replacements and major repairs.
What areas do you serve?
We serve McHenry, Crystal Lake, and surrounding areas in McHenry and Lake Counties, Illinois.
Are your technicians licensed?
All our technicians are fully licensed, bonded, and insured with expertise in all major HVAC brands.
Do you work on weekends?
Emergency service is available weekends, but regular appointments require advance scheduling during weekday business hours.
Reviews (7)
Lisa G.
May 10, 2022 Report
Put Air and Heating ducks in parents attic. Half of our suitcases and belongings are stuck in part of our attack that we can't get to. Never asked us to get them out before installing! Left pieces of metal and wall all over in attic. Left my parents with no heat in the winter for 2 days! After they were done we could not believe the mess they left! Very unethical.
Cindy C.
Oct 26, 2021 Report
Best quote for the job - polite efficient customer service - the men on the job Jay and Nate outstanding work - pleasant individuals. From sales Eric P. to customer service to job completion - standing ovation and high recommendation.
Rich L.
Jan 07, 2021 Report
These guys were great, Jeremy came out within 2 hours and was very honest and knowledgeable. Very reasonable prices. Great local business
Michael P.
Nov 06, 2020 Report
We've been using MH&A for at least 10 years. They've been great. Responsive, diligent and friendly. Most people don't know, they do plumbing too. Quick to respond when I was across the pond waking to a 3am call for a burst pipe when the Misses could not find the water shut off valve (dig at wife for good measure)! Sure miss Dan the Man, our original tech, he was a fantastic human being, RIP!
Karen P.
Jun 03, 2020 Report
This is my first Yelp message ever. I just want to applaud McHenry Heating and Air Conditioning. We have used their Service for more than 15 years and I've never been disappointed. Every technician that has ever been in my home has been well trained, knowledgeable, and efficient. They're always professional, neat, and on time. They have never tried to "push or sell" product. They are honest.

The office personnel are always ready to assist and find a way to fill the need with a smile and desire to help. I have them come for my yearly cleaning and call to trouble shoot when necessary. We also bought a furnace and they helped us make the right decision about a year ago. I pray they stay in business forever or till I'm dead. --Karen P
John W.
Dec 10, 2019 Report
If your looking for a reliable company for heating & air then this is your company! With so many companies out there it's important to find one that understands your issue(s) and never gives up in finding out what's wrong. Our friendly service guy Jeremy has been the best! He found and fixed our issue and explained to us all the way through the process. I've used this company for years and have always been treated with great customer service and prompt service calls by all there employees. Please give Mike and his team a call, Spring/Fall whatever you need they'll take care of you. Satisfied Customer John & Jo Williams
Todd H.
Dec 08, 2018 Report
McHenry HVAC has been maintaining and has also done new unit installations on two of my homes across almost 15 years. They came recommended to me and I would not hesitate to recommend them to anyone needing reliable and honest HVAC or plumbing work. I have 3 HVAC units and a boiler system in my home in Woodstock, all seasonally serviced my McHenry. Zero complaints. They take their business very seriously and customers are treated fairly and with respect year after year.