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Old 08-12-2017, 10:49   #1
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Location: Argyll, UK.
Boat: Bruce Roberts 43
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Diesel Central heating

My Bruce Roberts 43 has a heating system consisting of a Mikuni MX 60 diesel heater which supplies hot water from a 70 ltr calorifier and heating through 3 radiators and two towel rails. The Mikuni is 20 years old and is shot. I am looking at replacing it with a 5Kw Webasto Thermo top diesel heater. There are what appear to be good deals on E bay for re-manufactured Webasto Thermo Top heaters. Has anybody taken this route and what is your experience?
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Old 08-12-2017, 11:25   #2
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Boat: Valiant 42
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Re: Diesel Central heating

It depends on your intended cruising grounds. But for a 43 ft boat i would say you need at least 10kW.
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Old 08-12-2017, 12:00   #3
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Boat: 1968 Islander bahama 24 hull 182, 1963 columbia 29 defender. hull # 60
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Re: Diesel Central heating

The mx60 is a 7k unit so going down to any 5k in it would give dismal results and actually cause early failure of the webasto unit. I would have to recommend the thermo 90st or the eberspacher m10 may also be a good fit .
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diesel, heating

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