Local HVAC contractor providing heating, cooling, and duct services with a focus on clear communication, punctual appointments, and clean workmanship.
Clear explanations, responsive scheduling, and careful workmanship stand out in local feedback. Projects are completed efficiently with attention to cleanliness and follow-through, including coordination for inspections when required.
Ontario and nearby Inland Empire areas. Call to confirm service to your address.
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Heating and cooling system installation and replacement; AC and furnace repair; diagnostics and maintenance; air duct repair and replacement; system upgrades and thermostat installs.
Reviews frequently highlight quick response times and thorough diagnostics, with technicians explaining issues in plain language and avoiding unnecessary upsells. Homeowners mention clean, efficient installations and tidy work areas. Several comments note fair or reasonable pricing and smooth coordination from consultation through inspection. Follow-up support on prior installations is also mentioned positively.
We are extremely happy that we chose Diamond Air Services. From start to finish, the entire experience was outstanding. Their level of professionalism, attention to detail, and quality of work truly exceeded our expectations.The technicians were knowledgeable, punctual, and took the time to thoroughly explain everything they were doing. It’s clear they take pride in their work, and the quality of the installation/repair reflects that. They made sure everything was completed properly and left the area clean and organized.
I called to have my AC unit inspected because my lower AC unit stopped cooling, and I’m so glad I found this company. From the moment I reached out, the response time was impressively quick.Howie was friendly, professional, and really knew his stuff. What I appreciated most was the honesty. He walked me through exactly what was found during the diagnostic, explained everything in plain language, and didn’t try to upsell me on repairs or parts I didn’t need. That kind of transparency is so rare and refreshing.The pricing was fair. no surprise charges or hidden fees and best of all, he got it right the first time.If you’re looking for an AC company you can actually trust, these are the guys to call. Already recommended them to my neighbors!
Howie and his team did an excellent job installing our new heater and removing the old one. From consultation to installation to city inspection, everything was completed so quickly and efficiently. The entire process was smooth from start to finish. The price was very reasonable, and the service and communication were clear and easy throughout. They were professional, clean, and respectful of our home, making sure everything was tidy when the job was done. We also appreciated the helpful recommendations they provided. Highly recommend Howie and his team!
This team from Diamond Air is the best! I purchased a full HVAC system 5 yrs ago. My heater suddenly stopped working and they came out the next business day. They diagnosed my system and determined that I had a bad gas valve. They were able to obtain the part I needed and quickly installed it that same day. The best part that I didn’t expect was they did not charge me a single penny! Yes it’s true! Thank you Diamond Air you’re the best!
We recently needed to have a complete air duct replacement of our HVAC system. Baran and Oscar did an amazing job for us. They were professional and very knowledgeable…completing the job in half a day. We were impressed with their professionalism and the steps they took to keep our home clean during and after their work was completed. Would highly recommend Diamond Air for any heating/AC needs.
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Preventive maintenance for better cooling performance.
Get options and pricing for a replacement system.
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