Our Services

  • Control Specialists

    Our technicians are knowledgeable and experienced with both digital and pneumatic system controls.

  • HVAC/R Systems

    We work on and install heaters, boilers, furnaces, heat pumps, air conditioning units, chillers, walk-in coolers & freezers, refrigeration systems, process cooling, restaurant equipment and split systems.

  • Retrofits

    Adding new parts to an older system can improve performance and energy efficiency. This is a much more cost-effective option compared to buying new, with the same benefits of improved efficiency and lowered energy bills.

  • Preventative Maintenance

    Keep your machines from looking like this!

    We perform regularly scheduled checks and maintenance to keep everything in working order.

  • 24/7 Service Response

    When your heating or air conditioning goes out, it’s never convenient. We are here for all of your HVAC/R needs, regardless of the time.

    Call 406-652-9333

ABOUT

In 1996, John Berns established Conditioned Air Systems (CAS) with the clear goal of ensuring that all his clients HVAC/R systems run as efficiently and smoothly as possible.

Guided by this simple directive, our technicians understand the importance of comprehending all the variables in a HVAC/R system. Our technicians work to provide the best solution for the customer.

Over the last 30 years, this attention to detail and ability to learn, grow, and adapt is a small part of why CAS is not only one of the top commercial HVAC/R providers in the Billings area, but they’re also the HVAC/R service company for some of the largest telecommunications companies in Montana.

CAS provides service for Billings and its surrounding communities.

TESTIMONIALS

Commercial Client

“Thank you for your service! We own 6 properties and plan on using you for our service.”

Residential Client

“I tried two other companies to get my heater fixed. With no luck. Contacted CAS and had heat within a week.”