Dan Sheer Heating & Air Conditioning brings commercial-grade HVAC, electrical, and contracting expertise to homes and businesses across the Inland Empire. Backed by over 30 years of industrial engineering experience, we go beyond quick fixes to deliver high-efficiency AC replacements, HVAC zoning, heating solutions, 200-amp electrical panel upgrades, and refrigeration services built to last. We hold licenses in four distinct trades (General Building B, Electrical C-10, HVAC C-20, and Refrigeration C-38 | CSLB #876380). Proudly based near UC Riverside, we provide rapid priority service to Riverside, Moreno Valley, Corona, Jurupa Valley, San Bernardino, Fontana, Loma Linda, and Redlands. Fully licensed, bonded, and insured.