DELTA T

Delta T operates out of Anaheim, California, serving residential and commercial customers across the greater Los Angeles metro. The company holds a perfect 5.0-star rating across 4 published client reviews. Their crew works standard business hours Monday through Friday and Saturday mornings, leaving Sundays closed. Delta T specializes in heating system retrofits and relocations, frequently moving equipment into attic spaces where it operates more quietly and efficiently. The company also handles commercial air conditioning and building automation projects throughout the region.

What separates Delta T from general HVAC shops is their focus on building automation and modern smart-technology integration. Their technicians connect heating, cooling, lighting, and ventilation into unified systems designed to reduce energy waste. On the heating side, they service a wide range of equipment including conventional gas systems, heat pump units, hydronic heating setups, and water-source heat pumps. This breadth lets them handle older properties and newer construction alike without subcontracting specialty work to outside firms.

Both Debbie Mulligan and Krista Kazarian described the same outcome: their old outdoor HVAC setup was moved into the attic, eliminating noise and improving cooling performance throughout their homes. Mulligan noted the entire project took two days, while Kazarian mentioned Delta T came in significantly under competing bids. Technician Nick drew specific praise for honesty, fair pricing, and the ability to finish a technically demanding job in tight timeframes. Benjamin Cortez cited getting the work done correctly on the first attempt as the reason he recommends the company. Blake Wampler highlighted the crews prompt arrival and professional demeanor throughout the job.