Air Conditioning Companies in Glendora, CA

Comprehensive list of commercial and residential air conditioning companies in Glendora, CA offering installation, repair and maintenance services.

Business Listings

CYPRESS HEATING-AIR CONDITIONING & PLUMBING. is a 40 year old, family owned & operated firm, serving the whole San Gabriel Valley and portions of Los Angeles, Orange and Riverside Counties. Specializing in domestic retrofit/replacement market, light industrial and commercial; sales, service and installation.


Due to the recent high demand, we now provide Indoor Air Quality Improvement which includes HVAC Systems Cleaning, microbial decontamination, and sanitation. Crown heating and Air Conditioning installed a new 15 ton Carrier package unit. Have your HVAC system checked is for the heat arrives.


At Air-Tech Heating & Air. we're glad to provide domestic and commercial clients alike with complete sales, service and installation of best quality air conditioning & heating systems. Whether you need a new installation, a complicated design to build, or a simple change out, our completely insured technicians perform all jobs efficiently and safely.



We supply a complete array of air conditioning, heating, and ventilation services. We have in-house design engineers, well equipped field installation crews and our own sheet metal shop for duct fabrication. We provide scheduled maintenance and on-call service to our clients. John Helbing, a chemical engineer with a degree from Marquette and a former naval officer, established Air-Tro in 1969.


Serving the Los Angeles and Orange County areas since 1985 we're glad to serve both our commercial and domestic clients. From the most complex installations to routine maintenance and service, our factory-skilled technicians will supply the expertise your comfort depends on.

  • After having a bad experience with a heating company in Monrovia I called R.D. Smith to

We currently have a Customer is First attitude. When you hire us, you get reliabilty and trust-worthiness, plus the peace of mind that comes with working with solid, experienced specialists in heating and air conditioning. Take a several minutes to read the principles that guide us, every day, and you will agree.


Sinclair Air Systems installs new air conditioning & heating systems, as well as supplies service and repairs in and around Southern California. Sinclair Air Systems supplies quality workmanship and valuable state of the art equipment. Sinclair Air believes in developing a nice foundation with our clients as an important type of our success.

  • I'm not sure what John is talking about, what does an ex-con exacly look like? As one

For over 45 years, Harlan Scroggins / AR Air Conditioning, has built a perfect reputation for the repair, maintenance and design of air conditioning systems. AR Air Conditioning is a Southern California based firm situated in San Dimas, California. AR is an EPA Certified and insured firm.