Diamond Air Services

Diamond Air Services holds a 5-star rating across 7 homeowner reviews in San Bernardino, California. The contractor operates under California state licenses C-20, C-43, and General B, numbered #1047483, qualifying the team to install, service, and repair both air conditioning and heating systems for residential and commercial clients. Business hours run Monday through Friday from 7 AM to 6 PM, with Saturday service available from 8 AM to 3 PM.

This contractor distinguishes itself through transparent pricing and flexible financing options. Multiple reviewers noted cost savings compared to big-box competitors, with one customer saving thousands on a new air conditioning installation. The team offers in-house financing, making system replacements accessible without upfront full payment. Their service portfolio covers the full lifecycle of HVAC equipment, from new installations to air duct cleaning and indoor air quality solutions.

Customers facing urgent breakdowns highlight the team's responsive service. During an extreme heat event with temperatures exceeding 100 degrees, one reviewer called after the AC failed and reported the technician arrived quickly, diagnosed the issue, and completed repairs the same day. Technician Anthony earned multiple mentions for professional conduct and diagnostic skill, arriving the next day after being called and explaining the problem clearly to the homeowner.