Oh yeah and welcome, Canada Ehh. (Bad Canandian joke - LOL).
Does the engine seem to run Okay? Im sure you talking about the RV engine heater core? Are the hoses hot to the touch? They must be. Perhaps blockage in heater core? Defective thermostat - replace again?
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2017 Axis / 25.4: Big Foot Levelers, Aims 1200 Watt inverter, Ceramic Window Tint, Full River AGM 6V batteries, Front Hellwig Sway bar / Rear Track Arm, Safe T Plus Steering Stabilizer, PD 4655 converter, Hard Wired Surge Guard, WEboost + WiFi Ranger, LED Headlights/Driving lights, TPMS, Surge tank, Tornado flush, Viair Compressor
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