From the smallest to the largest job, the result is always the same: High performance, reliable systems with unmatched efficiency and quality.

Brennan Heating & Cooling, Inc. is Northeast Ohio's premier commercial, industrial and residential heating and cooling company. Our expertise is designing, building, retrofitting, fabricating, and installing heating, ventilation and air conditioning (HVAC) systems in medium to large industrial and commercial buildings. We also provide building owners and facility managers with a comprehensive computerized HVAC preventive maintenance program, including fast reliable service and energy management.