Never experienced that BUT when outside temps get to 38-40 I switch to the furnace. The unit is not efficient enough or large enough to maintain 70 in a 43' 5er. I live in the south with a HP and if we get a few days of sustained cold the fireplace and electric furnace is used. It only happens about once a decade but impossible to take enough heat out of 25 degree temps to heat a 3000 sq ft home to 70.
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John & Patty
2022 3855 BR
2019 Lariat F350 4X4 Dually
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