Diamond Air Services is a local HVAC company serving the San Gabriel Valley with maintenance, repair, installation, and duct cleaning. Office hours are Monday–Friday 7:00 AM–6:00 PM and Saturday 8:00 AM–3:00 PM.
Customers often note responsive scheduling, thorough system checks, and polite technicians who explain findings before work begins. Jobs are completed with attention to cleanliness, including shoe covers and post-work cleanup. The office team provides regular updates so homeowners know what to expect at each step.
Serving Azusa, Irwindale, and nearby cities across the San Gabriel Valley.
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Heating and air conditioning maintenance, diagnostics and repair, new HVAC installation and replacement, thermostat setup, and air duct cleaning.
Reviews consistently highlight friendly, professional technicians who explain issues clearly and answer questions. Many customers mention timely arrivals, thorough maintenance, and careful cleanup, including wearing shoe covers. Communication from the office about scheduling and updates is frequently praised. Several reviewers note smooth system replacements and ongoing satisfaction with recurring maintenance.
I hired Diamond Air over other HVAC companies to replace my old outdated equipment and not only were they professional and courteous, but they went above and beyond what I expected. I have zero complaints, all positives. The crew was very experienced and Jose their lead was exceptional and answered every question I asked. I would not hesitate to recommend them to any family member or friends.
Baran from Diamond Air Services came to do our HVAC maintenance. He has done the maintenance for us several times and always does a fantastic job. He is very thorough in checking our system to ensure that it is operating at optimal levels and that anything concerning is remedied immediately. He is timely and efficient and friendly. We are very happy with our continued services from Diamond Air
Communication from Howie Vo, the Ops Mgr from Diamond Air, was excellent. They also have payment plans for these unexpected expenses. Salvador, the HVAC tech from Diamond Air, is a true professional. He answered all my questions, was friendly, and very polite. He tested everything and provided some tips on maintenance before he left. I would recommend this business to friends and family.
Hired Diamond Air to come to duct cleaning and unit maintenance. Baran and Christian were the techs who came out to service my home. They were super friendly and professional. They cleaned up after themselves and didn’t leave a trace that they were here. They wore covers over their shoes throughout my house so they didn’t track any dirt inside. Highly recommend them for your HVAC needs!
I have been using Diamond Air Services since 2021. I can’t say enough great things about this company! The team is amazing, from Anthony, Howie, Bobby, Tiffany, etc. They are quick to respond and extremely friendly. You can count on VIP service from Diamond Air. They treat their customers like family. They will not upsell you. As a matter of fact, Anthony will come up with proposals to save you money. I recently had my annual maintenance service and again, was very pleased with the service. My technician Sal arrived on time, carefully explained everything, and took care of everything. Thank you again, Diamond Air Team!
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