You may not think it, but many air conditioning systems have to work just as hard in cold weather—especially in well insulated buildings and commercial spaces with lots of heat-generating equipment and machinery. And that’s where head pressure controls come into play: in low ambient conditions, they regulate system pressure in HVAC systems, helping to prevent freeze-ups and low-pressure cutouts. They also fight against liquid-slugged compressors, all of which can lead to the loss of perishable goods and expensive downtime. You can also shop Zoro’s selection of pneumatic, refrigeration, HVAC and appliance controls.