About Service Plus Mechanical Service Plus Mechanical is a family-owned HVAC Company. Owner and operator, Cesar Covarrubias was formerly in the trades. He was always very mechanically inclined and interested in building a legacy for his family and sons, and, inspired by his father who was also an entrepreneur, he furthered his education, became HVAC Certified, and began his business out of his own garage. In only a few short years he was running a crew and had a full blown office, a separate equipment storage and workshop, and several work vans on the road throughout the Fox Valley region to Chicago. The business has been a success because of the simple principles of honesty, integrity, and hard work; the business has never received a bad review. This is because Cesar and his team have dedicated themselves to the most up-to-date training and education, because they are more interested in having long-term, loyal customers than squeezing every person for a profit, and therefore Service Plus Mechanical retains customers, obtains referrals, and continues to grow and prosper. Just this year Service Plus Mechanical became a part of ComEd and Nicor’s contractor’s circle. Service Plus Mechanical also added a whole new service after investing heavily in out-of-state training and top-notch equipment for Duct Cleaning, to add to the air quality services they have been incrementally adding to the company. As Service Plus Mechanical has grown, they have also taken initiatives to give back to the community as well as create their own nonprofit initiative. Please visit our Community Involvement section to learn more about these endeavors.