Heating, Ventilation, and Air Conditioning

Diamond Air Services aims to please  with old fashioned, high quality, professional customer service done right the first time to create comfortable, healthy, safe and energy efficient places to live and work.

Diamond Air is locally owned and operated by a family, just like yours. We have over 20 years experience in the industry and we are committed to making our customers smile. We are experts in Residential and Commercial HVAC throughout Ontario, Irvine, and Arcadia. We offer repair of your Heating and Cooling equipment, replacement of your existing system and maintenance to keep your unit(s) working properly. We will thoroughly explain the diagnosis before we make any installations and/or repairs. We want you to be able to make an informed decision after we present all of your options.



We at Diamond Air are dedicated to making sure the environments in your home and business have no such threats to your health, that they are clean and safe. Our trained technicians are specialists in properly maintaining HVAC ventilation systems.


“My heater went out and they quickly scheduled me an appointment. They were extremely accommodating and so helpful. They figured out the problem and had it up and running in no time. They were extremely kind and helpful. I couldn’t be happier with their service and professionalism and would highly recommend them!”

Shelley Kennedy

These guys are truly amazing! Respectful, efficient, and extremely professional. Our newly purchased old home needed some upgrades… they replaced all of our ducts, cleaned every vent, rotated our HVAC compressor (the connections were hanging on the exposed side), and replaced the moldy/rotting plywood beneath the furnace.

Shalia C.

“My air duct were just filthy. Diamond came and spent about 4!hours cleaning the entire vents . They provided me with pics and the difference was amazing. I am definitely going to be call My them in 3 years to come back. Thanks!”

Ericc Aguilar

“Wow… these guys are great. They just completed a big project for me, total HVAC system replacement, heater, ac, new ducts and all. They are very responsive.. Howie is great. They showed up exactly when they said they would, very professional, great communication, courteous, wore booties to keep the house clean, and had the best price.Will definitely use them again and recommend them to anyone needing HVAC work.”

Brian G.

“The guys did a fantastic job. Very thorough and professional. I called to get a quote and they came out the same day. All their equipment was clean and very well maintained. Customer service was outstanding! I will used them again in the future and highly recommend Diamond Air Duct and Vent Cleaning.”

dek deavs

“Steve and the other tech did a fantastic job cleaning our air vents, blower motor, and dryer vent. They are very professional and friendly. They showed me before how dirty everything was before and how clean it was after they finished. I have a 3 bedroom house and the job took about 3hrs to complete. I highly recommend this company to anyone who is looking for air duct cleaning or HVAC work.”

Gavin P.

My experience with these guys were just pleasant to work with. They arrive on time and fixed my ac and replaced my filter. Thanks guys!

Abelardo Z.

My air conditioning went out on me in the middle of thr night. I called Diamond Air Services and they came out in the morning and fix it fast at a resonable price, Thanks Bobby!

Demetri L.

My air duct were just filthy. Diamond came and spent about 4!hours cleaning the entire vents . They provided me with pics and the difference was amazing. I am definitely going to be call My them in 3 years to come back. Thanks!

Ericc A.

Tim and Will did a great job cleaning my air ducts, and dryer vent yesterday. They took pictures of before and after and showed me the difference. They cleaned up any mess that was made, which was very minimal.

Harry C.



Serving Ontario, Irvine & Arcadia & Surrounding Areas

We instill in our highly skilled craftsman a sense of pride in our company and train them to treat you the way they would like to be treated and to go the extra mile to make sure that you are completely satisfied.