Commercial Vehicle HVAC Systems for Trucking, Bus, Emergency and Rail

In 1965, Red Dot got its start building rugged heaters for mail trucks traveling the Alaska Highway.

Today, we supply heating and air conditioning systems and components, including distribution unit kits, condensers and all-makes replacement parts for medium and heavy-duty trucks, step vans and work vehicles within a broad range of vocations. 

Heavy-Duty HVAC Parts, Support, and Thermal Management Expertise

Our diverse product and service portfolio, coupled with our expertise in thermal management, allows us to offer components, modules and product distribution support to help equipment owners and technicians operate and maintain heavy-duty mobile HVAC systems.

Medium and heavy-duty vocational vehicle climate systems

Red Dot works with several manufacturers of no-idle auxiliary bunk heating and cooling products to help improve product performance, durability, return on investment and driver satisfaction. Whatever your fleet runs, we have the depth of inventory and technical expertise to keep it moving.

Red Dot ProTecht: Refrigerant monitoring and system protection

Our diverse product and service portfolio, coupled with our expertise in thermal management, allows us to offer components, modules and product distribution support to help equipment owners and technicians operate and maintain heavy-duty mobile HVAC systems. This includes Red Dot technology like ProTecht, which monitors refrigerant pressures, protecting the compressor and other components.

Motor coach and transit bus HVAC systems for large interiors

Looking for a complete heating or A/C kit for your UTV? Offroad Arctic by Red Dot kits are compatible with Polaris Ranger, Polaris RZR and Bobcat UV34, with new compatible models on the horizon. Offroad Arctic by Red Dot delivers rugged, plug-and-play climate systems designed for the way you ride and work.

Purpose-built emergency vehicle HVAC systems for ambulance and fire

Emergency vehicles don’t get time-outs. Red Dot delivers purpose-built HVAC solutions for ambulances and fire apparatus—including patient compartment cooling, cab climate systems and custom-engineered modules developed in direct collaboration with OEM upfitters.

We understand the unique requirements of emergency vehicle operation: fast deployment, extreme temperature ranges, continuous duty cycles and the regulatory specifications that govern every component on a first-responder vehicle. Our engineers work directly with your team to spec the right solution from the ground up.

Climate control for passenger rail, locomotive cabs and maintenance vehicles

Red Dot delivers heating and climate control solutions for passenger rail cars, locomotive cabs and rail maintenance vehicles. Working directly with OEM engineers and transit authorities, we develop systems that meet the specific thermal management requirements, duty cycles and safety standards of the rail environment.

Heat pump technology for EVs and commercial vehicles

As a leader in the development of HVAC systems for electric vehicles, Red Dot looks to continue to innovate as the world moves toward a sustainable future with electric vehicles.

Red Dot heat pump HVAC for maximum performance, minimized footprint

Our heat pump HVAC system, reverse-cycle air conditioning, was developed on the premise of reversing the function of both the evaporator and the condenser between cooling and heating. Red Dot’s electric vehicle HVAC system delivers maximum heating and cooling performance with a minimized carbon footprint. Compact design, advanced PTC and heat pump proprietary technology makes Red Dot the leader in electric heating and cooling systems.

Let’s Build What's Next

Tell us about your platform, your fleet, or your market. We’ll bring ideas, process, and the ownership mindset that keeps partnerships thriving for decades.