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Mavec Heating, A/C & Refrigeration

"No Service Is Too Small"

About Us

Founded in 2000, Mavec Heating, A/C & Refrigeration has built a strong reputation as the go-to provider for dependable climate control and refrigeration services across Marseilles, Morris, Seneca, Ottawa, and surrounding areas in LaSalle and Grundy counties. We proudly serve both residential and commercial clients, offering expert solutions for projects of all sizes.

Our licensed, bonded, and insured team is equipped to service all makes and models, ensuring your systems run efficiently and reliably. From heating and cooling repairs to rooftop units, park model systems, and commercial refrigeration, we deliver quality workmanship with every job. As proud American Standard dealers, we offer top-tier products known for performance and durability. Plus, with emergency service available on weekends, we’re always ready when you need us most.

Experience 25 years of trusted service—choose Mavec for comfort that lasts.

Areas Served

Our Certifications

Licensed, Bonded and Insured

What We Offer

Our Specialties include:

At Mavec Heating, A/C & Refrigeration, we pride ourselves on being a versatile and dependable service provider for both residential and commercial clients. Our team is trained to service all makes and models, ensuring that no matter your system’s brand or complexity, we have the expertise to keep it running smoothly. We understand that heating, cooling, and refrigeration issues don’t always happen during business hours—that’s why we offer emergency service on weekends, providing fast, reliable support when you need it most. Whether it’s a home comfort system or a commercial refrigeration unit, Mavec is your trusted partner for quality and responsiveness.

Our Services include:

Cooling Services: We provide expert air conditioning services for residential, commercial, and park model properties, including rooftop unit installations and maintenance. Our team is equipped to service all makes and models, ensuring reliable comfort during the hottest months.
Heating Services: From residential heating systems to commercial rooftop units and park model heating, we offer comprehensive heating services tailored to your needs. Our technicians handle repairs, maintenance, and installations with precision and care, keeping your space warm and energy-efficient.
Refrigeration Services: We specialize in servicing and installing commercial refrigeration systems, including walk-in coolers, reach-in units, beer coolers, and ice machines. Whether you're running a restaurant, bar, or retail space, we ensure your equipment operates at peak performance.
Repair & Maintenance: Our skilled technicians provide prompt heating and cooling repairs across all system types and brands. With emergency service available on weekends, we’re here when you need us most to restore comfort and functionality to your home or business.

Our Brands include:

American Standard
Trane
RunTru
Ameristar

Our Products include:

Furnaces
Commercial Refrigerators

Testimonials

On 8/18/2025 Sarah Schopp had this to say:
John has always been AMAZING when it comes to fixing heat, a/c, & refrigeration units at the businesses I've worked for, for the past 15+ years. He received a call this morning from the owner, and was here to fix our a/c within an hour. He spotted the issue right away & had it fixed shortly after. HIGHLY recommend always!!! Best around, hands down.

On 8/18/2025 Sarah S. had this to say:
John has always been AMAZING when it comes to fixing heat, a/c, & refrigeration units at the businesses I've worked for, for the past 15+ years. He received a call this morning from the owner, and was here to fix our a/c within an hour. He spotted the issue right away & had it fixed shortly after. HIGHLY recommend always!!! Best around, hands down. Testimonial written by Sarah S. on this site.

On 7/28/2025 Anonymous had this to say:
Came home from vacation and our air conditioner stopped working. John came out the next day and got it working no problem! We had another local company out a few months ago and they told us we need a whole new unit and that it would be $6,000. They didn’t even try to fix it. John is honest and good at what he does! Would highly recommend. Testimonial submitted anonymously directly to this site.

On 7/25/2025 Mike Thorp had this to say:
John has been a lifesaver. He has fixed several cooling and heating units in our rental apartments. He shows up when he says he will and completes the job in a timely manner. Testimonial written by Mike Thorp on this site.

On 7/7/2025 Mike Vanderhei had this to say:
John did an excellent job on our heater, he was prompt and fixed it quickly. We will be calling him for any of our needs. Thanks! Ralph

Contact Us

Mavec Heating, A/C & Refrigeration
Marseilles, IL 61341
Phone: (815) 955-1379
Email: mavec@mtco.com

Where To Find Us

Payment Types Accepted

American Express, Cash, Discover, MasterCard, Personal Checks, Square Accepted, Visa

Our Hours

24 Hour Emergency Service

Holiday Hours May Vary. Please Call For Details.

Monday: 8:00 AM - 5:00 PM
Tuesday: 8:00 AM - 5:00 PM
Wednesday: 8:00 AM - 5:00 PM
Thursday: 8:00 AM - 5:00 PM
Friday: 8:00 AM - 5:00 PM

News

☀️ Summer is in full swing! Ensure your home is a cool oasis with Mavec's professional heating and cooling repairs. We’re available even on weekends for emergencies. Enjoy summer without worrying about the heat! 🏠

🔥 Summer's arrived! Is your A/C ready to keep you comfortable? Trust Mavec Heating, A/C & Refrigeration for efficient solutions and weekend support. Beat the heat with our top-notch cooling services! 🌡️

❄️ Mavec is here for all your air conditioning needs, offering emergency service on weekends. Make sure your home is a cool refuge from the summer sun. Call us today for a check-up! 📞