MSI Heating & Air has over 20 years of experience. You can always trust us for exceptional workmanship and the highest quality services. We're open from Monday to Saturday,8:00 AM to 8:00 PM.You can always expect our service call charges to be lower than others. At MSI Heating & Air, our overall prices are negotiable too. To discuss your heating system installation needs with our locally owned and operated team, give us a call at 888-822-8679.We are located in San Bernardino, CA and we are serving entire area - Arrowhead CA, 92405 Del Rosa CA, 92404 Shirrells CA, 92411 Rancho West CA, 92376 North Norton CA, 92410 North Park CA, 92407!Residential Air Conditioning, Commercial Air Conditioning, Professional Air Conditioning, HVAC Repair, HVAC Service, Air Conditioning Installation, Heating Repair, Air Conditioning Maintenance, Residential Heating, Commercial Heating, Heating Company