Why don't our MH's have calorifiers as a default?

[RogerIvy]

I recently helped my daughter kit out her Merc Sprinter.
We installed a brilliant DIY LifePO4 power system, and also a calorifier.

According to her within 20mins of driving she has piping hot water. It's still pretty hot after an overnight stay and we plan to insulate it even further.
My brother builds special 4x4 (based on a Fuso) vans in the USA. They only use calorifiers with great success.

So why do our MHs still not use that excess heat from the engine? Probably weight?
I'm thinking of installing one to feed into my Truma heater. I'd build a box around it with even better insulation than it already has.

 

[Ivory55]

Money, how much would people pay. They sell the product at a price they think people will pay and fit equipment to the price.

 

[wiljoy]

They are stripping out everything to charge you for it as an extra so your brilliant idea hasn't a chance of bring a standard fit.

 

[ChrisL]

I recently helped my daughter kit out her Merc Sprinter.
We installed a brilliant DIY LifePO4 power system, and also a calorifier.

According to her within 20mins of driving she has piping hot water. It's still pretty hot after an overnight stay and we plan to insulate it even further.
My brother builds special 4x4 (based on a Fuso) vans in the USA. They only use calorifiers with great success.

So why do our MHs still not use that excess heat from the engine? Probably weight?
I'm thinking of installing one to feed into my Truma heater. I'd build a box around it with even better insulation than it already has.

Some motorhomes with Alde heating have heat exchangers, I'm not sure if these can heat the hot water but they can heat the habitation area so when you stop the heating doesn't have to start from scratch.

 

[Landy Andy]

Many people have motorhomes drive to a site park for a week or two, then use the services there, even carrying their washing up back and forth. To me a calorifier would be of use a we move most days, but many don’t.

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[Jamesh]

I guess they don't want to link habitation plumbing in with the engine plumbing!

Such would cause difficulties if whose responsible for its installation/ maintainance!

 

[DBK]

Some Eberspacher heaters use heat from the engine but they seem to have fallen out of favour to be replaced in some cases by deisel heaters which work when the engine isn't running.

I suspect the reason is the saving in fuel costs provided by using engine heat are not enough to justify the installation costs of adding what is in effect a duplicate heating system as you still need something when you stop.

 

[dash300]

I recently helped my daughter kit out her Merc Sprinter.
We installed a brilliant DIY LifePO4 power system, and also a calorifier.

According to her within 20mins of driving she has piping hot water. It's still pretty hot after an overnight stay and we plan to insulate it even further.
My brother builds special 4x4 (based on a Fuso) vans in the USA. They only use calorifiers with great success.

So why do our MHs still not use that excess heat from the engine? Probably weight?
I'm thinking of installing one to feed into my Truma heater. I'd build a box around it with even better insulation than it already has.

That's a very good point which has never occured to me in relation to a motorhome. Boats have them as common place and they are just so efficient harnessing the heat of the engines.

 

[DuxDeluxe]

I recently helped my daughter kit out her Merc Sprinter.
We installed a brilliant DIY LifePO4 power system, and also a calorifier.

According to her within 20mins of driving she has piping hot water. It's still pretty hot after an overnight stay and we plan to insulate it even further.
My brother builds special 4x4 (based on a Fuso) vans in the USA. They only use calorifiers with great success.

So why do our MHs still not use that excess heat from the engine? Probably weight?
I'm thinking of installing one to feed into my Truma heater. I'd build a box around it with even better insulation than it already has.

Mine has, fitted as standard. Linked in with the Alde heating. I thought that it was common with this system

 

[Otter Spotter]

I recently helped my daughter kit out her Merc Sprinter.
We installed a brilliant DIY LifePO4 power system, and also a calorifier.

According to her within 20mins of driving she has piping hot water. It's still pretty hot after an overnight stay and we plan to insulate it even further.
My brother builds special 4x4 (based on a Fuso) vans in the USA. They only use calorifiers with great success.

So why do our MHs still not use that excess heat from the engine? Probably weight?
I'm thinking of installing one to feed into my Truma heater. I'd build a box around it with even better insulation than it already has.

I asked a similar question last week, I assume Heat exchangers and calorfier are the same thing?
I would love to be able to get one fitted as my current water heater appears to be the tank used

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[Armytwowheels]

Our heat exchanger heats the hot water, but you need to have the central heating too. Which is great if it is cold but God help you if you forget and drive from cold area to warm area, park up and wonder why your van is suddenly like a sauna!!

 

[tonyidle]

I recently helped my daughter kit out her Merc Sprinter.
We installed a brilliant DIY LifePO4 power system, and also a calorifier.

According to her within 20mins of driving she has piping hot water. It's still pretty hot after an overnight stay and we plan to insulate it even further.
My brother builds special 4x4 (based on a Fuso) vans in the USA. They only use calorifiers with great success.

So why do our MHs still not use that excess heat from the engine? Probably weight?
I'm thinking of installing one to feed into my Truma heater. I'd build a box around it with even better insulation than it already has.

Mine does - & it works just as you suggest.

 

[Lenny HB]

I guess they don't want to link habitation plumbing in with the engine plumbing!

Such would cause difficulties if whose responsible for its installation/ maintainance!

Not a problem as the heating would be indirect same principle as a domestic hot water cylinder.

Mine has, fitted as standard. Linked in with the Alde heating. I thought that it was common with this system

Normally an option or included in the winter pack option, often standard on top models in the range.