The operating efficiencies of any APU depends on a number of factors, including the size and shape of the sleeper, insulation R-value built into the sleeper cab, windows, door seals, and the ambient temperature outside. With the PowerCube’s high 24,000 AC & 30,000 Heating BTU’s the unit will provide even temps without partitioning space to isolate air flow in the truck cab. There are a few things that you can do to help maximize the heating and cooling processes even more, with some good planning and awareness.
For cooling, park in sheltered areas when possible and reduce or eliminate reflective heat sources, such as glass and electronic appliances that generate heat.
For heating, check to see that your window and door seals are tight, plus make sure that you have an appropriate cold air return (inside the cab) flowing under the bunk into the HAVC unit.
In both cases, proper airflow is paramount. So, take regular precautionary steps to ensure that lint or debris doesn’t accumulate and prohibit evaporator/blower performance.
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