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Old 03-30-2023, 09:28 PM   #1
Join Date: Feb 2023
Location: Lynden, WA
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Hydronic heating

Hydro Hot™ Hydronic Heating System w/15,000 BTU A/C Upgrade & Engine Pre-Heat Feature (no heat pumps). What is this option exactly? Is it worth having?
2003 HR Navigator 43PKD 500 Cummins and towing 1995 F150 Super Cab 4WD 5.8 auto w/4.10's and 10.50x33/15 BFG KO2's. 6 years US Navy
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Old 03-30-2023, 09:35 PM   #2
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Not sure how an ac gets added to a water heater.
2004 Dynasty 4
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Old 03-31-2023, 06:14 AM   #3
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Think conjunctions are missing: "hydronic heat system, AND 15k vs 12.5k BTU roof A/Cs [not heat pumps], AND hydronic heat has engine pre-heat." Poorly worded--this is not a single thing or option but separate issues. For Alpines, it means: propane furnace vs diesel boiler, 15k BTU roof AC's vs 12.5k [ACs only vs heat pumps], AND engine pre-heat function in the hydronic system vs intake heater grids or block heater.
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2003 Alpine 40' MDTS [Sold]
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Old 04-01-2023, 10:17 PM   #4
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For Example, our 2009 40' Limited FDQS has AquaHot hydronic heating, with engine preheat mode, PLUS we also have 2 - 15k BTU heat pump systems on the roof. So, duplicate heating systems.

With regards to worth having, I'd say the jury is still out on AquaHot vs. Propane furnace. Although, you'd lose the engine block heating with a furnace. The AquaHot is a bit quieter than a furnace, but requires more maintenance due to the diesel burner. 15k heat pump is a huge advantage, especially with a dark paint coach in the sun.
Scott & Marcia Hicks
2009 Alpine 40' FDQS 425 ISL
Portland, OR
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Old 04-11-2023, 09:29 PM   #5
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The HydroHot system is MUCH quieter than the propane heater.
Dave, Bobbi and Fenway
2005 38' FDTS Alpine Limited, 2016 Jeep Grand Cherokee Limited
Lake Wales, FL
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Old 04-11-2023, 09:34 PM   #6
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We have hydronic heating and hot water in our trailer. It’s nice. Very quiet, endless hot water etc. Works on propane, electric or both at the same time. I’m told it can be more expensive for repairs. Hopefully that won’t happen. Apparently many techs are not familiar with the systems either although that would depend on the manufacture I suppose.

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heat, heating

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