Mavec Heating, A/C & Refrigeration

Mavec Heating, A/C & Refrigeration has served the greater Ottawa/LaSalle County region since 2000, founded and operated by William Brzoznowski. With a 4.8-star average across 95 client reviews, this family-rooted contractor handles residential furnaces alongside commercial refrigeration units for area businesses. Technicians respond to service calls throughout the Illinois Valley corridor, including Ottawa, Marseilles, and neighboring LaSalle County communities.

What distinguishes Mavec is their 'no service is too small' philosophy paired with specialization beyond typical residential HVAC. The company maintains expertise in commercial refrigerators, a trade most residential-focused contractors avoid, allowing them to serve local restaurants, convenience stores, and food-service operators. Their nearly quarter-century track record suggests consistent parts inventory and diagnostic experience that prevents repeat visits and unnecessary delays.

Customer reviews consistently praise technician John for rapid same-day response during emergencies. Multiple homeowners describe calling with dead heating systems during brutal-cold stretches and seeing John arrive within the hour, often the same day, sometimes before the promised window. Yvette Pastirik recalled finding her furnace unresponsive as temperatures dropped, and John diagnosed the problem within an hour of her morning call. John Maher brought a different skillset entirely: he repaired a park-model RV air conditioner that another company deemed unrepairable.