How Many BTUs Do I Need for My A/C System?

A/C cooling capacity is measured in British thermal units or BTUs per hour. An undersized system won’t keep the cab sufficiently cool, while an oversized system will cycle on and off more than necessary, wasting fuel and straining the compressor and other components. Talk to a Red Dot distributor to determine how much capacity you need, taking into account the interior dimensions, insulation, windows, typical climates, and any heat-generating or heat-absorbing features of the cab.