Buy Switches

We stock pneumatic and industrial controls to regulate and maintain HVAC systems and components. Quality temperature control is achieved with wall and unit mounted thermostats. Microprocessors, circuit breakers and boards, damper actuators and defrost timers allow for constant system management.

On/off and changeover switches, valves in all sizes and for all applications, controllers, solid state relays and control panels allow for auto and manual change over capability for low and high pressure control of air or liquid. Manufacturers include Sporlan, Erie, Alco, Asco, Honeywell, Ranco, Barber Coleman, belimo, Robertshaw, Whiterodgers, Staefa Controls, Siemens Valves and Actuators, Inventsys and Controls.


When most people think about HVAC systems, they think about tanks, tubes, motors and other components used to move air and liquids around. However, it is often the components that help control the flow of air and liquids that truly make a difference. Switches are some of the unsung heroes of the HVAC industry, and choosing the right switch to make the difference between a great system and one that fails to meet expectations. Here are a few facts about switches and other components used in HVAC installations.

Pneumatic controls are popular in HVAC systems, and they continue to be the workhorses of the industry. While they lack some of the advanced features of switches developed more recently, they provide top-notch performance and dependability. While efficiency and power are important HVAC installations, some HVAC owners prefer the dependability of older, tested technology.

Many who own HVAC systems want their components run as efficiently as possible. Fortunately, years of engineering has led to the development of a number of ways to meet optimal temperatures. However, these techniques require microprocessors and other digital technology. Combined with circuit breakers, circuit boards, defrost timers and damper actuators, it is possible to run a system using a fraction of the powers that had to be used in the past. Combined with zone control, modern HVAC installations can perform tasks once thought impossible.

At HVAC Plus, we offer on and off switches along with changeover switches. We also offer valves in all size ranges and for all tasks. We stock controllers, solid-state relays and control panels, which can be used to automatically or manually change how a system is operating. Whether used in high-pressure or low-pressure environments, these new components are beginning to find widespread use in the HVAC industry.

We also understand how important it is to use reliable parts. As a result, we offer parts from Ranco, Barber Coleman, Robertshaw, White Rodgers, Siemens, Invensys, Sporlan, Alco, Erie, Asco and Belime. We also carry parts for smaller manufacturers, and our customer service representatives can help you determine the best parts for your needs. Whether you are maintaining an existing system or installing a new one, we have to parts and spares you need.

To find out how we can help you get your HVAC system up and running optimally, sends a fax, give us a call or send us an email. Our customer service representatives can help guide you toward making the best decisions for your needs.