Kelso Building Services of Phoenix optimizes building performance with expert Commercial HVAC and Mechanical Services, plus advanced Building Automation Services. Established in 2005, our team engineers reliable comfort, clean air, and efficient operations for offices, retail, healthcare, education, and industrial facilities. Preventive maintenance, rapid diagnostics, and compliant retrofits reduce downtime and energy spend while extending equipment life. Controls integration delivers real-time monitoring, smarter scheduling, and measurable savings. From rooftop units and chillers to VAV boxes and kitchen make-up air, projects are scoped clearly, priced transparently, and executed safely with minimal disruption. Need a system assessment, upgrade, or ongoing service plan? Call 623-306-7769 to schedule a consultation.