Maintenance and Repair | Phoenix + Denver

Mechanical Services

From commercial HVAC services to industrial refrigeration, CS Group has your mechanical services needs covered.

Commercial HVAC Services

Experts in Commercial HVAC Building Systems

Dependable Maintenance

Rest easy knowing CSGroup/Chiller Services is keeping your systems running smoothly and economically.

HVAC/R systems

We sell, maintain, service, support and back our new HVAC/R systems with one of the industry’s best warranties.

Emergency Services

Be it 2am in the morning or 8pm at night, our emergency staff is ready to respond.

Welcome to CS Group

CSGroup Chiller Services is an experienced resource that offers turnkey integrated mechanical services maintenance solutions, custom designed to meet our client’s specific needs. Our certified technicians are fully licensed and equipped to respond to all of your mechanical requirements.

On average, our technicians have in excess of 15 years experience working on York®, Carrier®, Trane® and McQuay® equipment as well as a variety of other manufacturers. Multiskilled and cross trained, our mechanical services technicians are able to troubleshoot and carry out solutions to any of your service or repair needs.

“CS Group is a great company. They are dependable, trustworthy, and honest.
I appreciate the Account Manager being thorough and always taking the time to explain how equipment works and go into detail answering questions we have for repair and replacement of equipment. The technicians are very knowledgeable and take the time to review equipment functionality and deficiencies with our building engineers.
I would highly recommend CSGroup’s services for preventative maintenance and
service call work on all our HVAC systems.”

– Allysia
Senior Property Manager


A Regional HVAC/R Leader 10 Years In a Row

CSGroup/Chiller Services is one of the most respected mechanical service organizations in the western United States, with operations in Colorado and Arizona.

What CS Group Clients are
Saying About Our Services

“Amazing turnaround time getting our new roof units installed! CSGroup provided all the coordinated services to get the job done on time — and even under budget!  We will never need another HVAC company.”

Facilities Coordinator

“CS Group has provided us with years of quality service maintaining our HVAC equipment. I just wanted to pass on our appreciation for always being there for us and giving our company peace of mind. CS Group never disappoints!”



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Logo with orange and gray text that reads "CS Group Chiller Services"
Serving the Denver Metro Area, Colorado Springs, Pueblo, Greeley, & Ft. Collins
8250 Park Meadows Drive.
Suite #100
Lone Tree, CO 80124
(303) 781-3030
2840 S. 36th St. E5
Phoenix, AZ 85034
(602) 843-6707
Phoenix, AZ