Commercial Buildings
Industrial Manufacturing
Pharmaceutical Facilities
Healthcare Facilities
Government Buildings
Educational Facilities
Hospitality Buildings
Clean Rooms


“Tustin Mechanical has managed and serviced our HVAC system for more than 15 years. During that time we have found Tustin to be a reliable partner providing maintenance, repair and replacement services. Tustin’s design and engineering team has consistently provided effective solutions and project management. We are glad to have the Tustin Group as our HVAV partner.”

Vice President of Operations —Pharmaceutical


“Since I have signed my first contract with Tustin some 17 years ago, soliciting bids for our HVAC work has become a thing of the past. Tustin is my first call when we build or acquire another property or simply need to update aging units. Years of experience has proven there is no need to look elsewhere. The Staff and technicians have demonstrated time and again that they are dedicated to doing their best.”

Property Manager—Real Estate Developer


“Since switching to Tustin Mechanical Services, our HVAC routine preventative Maintenance is performed on schedule with no effort from my part. Calls for emergency service are handled promptly and courteously, regardless of weather or work load and I’m kept informed as work progresses. Their customer service is truly top notch!”

Facilities Director—Manufacturer


“We are very pleased with the quality of service The Tustin Group Provides. We seriously appreciate their responsiveness and way they conduct business. We continue to recommend their service because of our level of satisfaction. We look forward to doing business with Tustin for years to come.”

Director of Operations—Biotechnology


“Since switching to Tustin Mechanical Services, I have been very pleased with the level of knowledge their technicians offer when it comes to my HVAC equipment. Tustin is reliable, knowledgeable, and extremely responsive to the needs of my facility. Since we are a 24 hour; 7 day a week operation, it is imperative to work with contractors who understand our urgency during emergency situations. The wellbeing of the animals that are housed in our facility depends on it.”

Owner – Veterinary Hospital