Fresh water/waste tank heaters? (1 Viewer)

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rf9ridrer

Free Member
Sep 6, 2022
78
38
Funster No
91,133
MH
2007 ACE FIRENZE
Looking at installing heaters for waste and water tanks, looking on the `net, i`ve found a couple of options, both are the stick on pads working off the leisure battery, has anyone used anything similar, any good? Or anything else that will do the job? Any recommendations please?
 
Jun 30, 2011
7,324
20,514
Barnard Castle, UK
Funster No
17,128
MH
Concorde Concerto
Exp
Since 2007
If no EHU is available that’s a lot of unnecessary power, you’re better off with a system that uses the vans own heating system.
 

Two on Tour

LIFE MEMBER
Sep 16, 2016
10,519
52,839
Near the junction of the A14 and A1, Cambs
Funster No
45,145
MH
Elddis Autoquest 175
Exp
Since 2010
I used these as tank heaters stuck to the bottom of both the fresh and grey water tanks.
https://www.ebay.co.uk/itm/12174432...d=link&campid=5338547443&toolid=20001&mkevt=1

To stop the grey waste dump pipe freezing I used trace heating cable from the tank to the dump valve.
https://www.ebay.co.uk/itm/18556399...d=link&campid=5338547443&toolid=20001&mkevt=1

Each tank has the temperature of the heat pads controlled by a digital thermostat with the thermocouple placed on the side of each tank about 60mm from the bottom of the tank.
I have these set to come on at 3 degrees and go off at 5 degrees C.
-Broken Link Removed-

I insulated the tanks with a double layer of bubble wrap insulation which has a foil coating both sides.
https://www.ebay.co.uk/itm/29354780...d=link&campid=5338547443&toolid=20001&mkevt=1

I taped the corners and edges and stuck the top edges of the insulation to the tanks with T-Rex tape which stick like the proverbial sh*t to a blanket.

The grey waste dump pipe I insulated with Armaflex pipe lagging.
https://www.pipelagging.com/pipe-in...ulation-lagging-black-nitrile-foam-class-o-2m

1667200099715.png


1667200121384.png


1667200141732.png
 
Jun 30, 2011
7,324
20,514
Barnard Castle, UK
Funster No
17,128
MH
Concorde Concerto
Exp
Since 2007
Not really a viable option if you have external tanks under your van as ours are.
Possibly not but nevertheless good information to note should the OP ever change his Motorhome and it is one of his requirements.

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TerryL

LIFE MEMBER
Mar 5, 2010
6,245
8,301
North East
Funster No
10,511
MH
Low Profile
Exp
2009
I presume you are intending to travel to areas with continuous sub-zero temperatures, such as skiing. For occasional forays below zero I don't really think it's worth it especially if you've got external tanks, full tanks take quite a long time to freeze - you're more likely to suffer frozen supply pipes.
For your waste tank you'd be better leaving the tap open with a bucket underneath it, easier to empty a "frozen" bucket.
 
Apr 21, 2009
546
35,634
East Cowes, PO32 6RU
Funster No
6,386
MH
Caravan
Exp
Caravan since 1970, motorhome or RV since 1999 then back to a caravan in 2017.
When we had the Hymer I used something like


that worked well through a thermostat. If doing it today I would, of course, buy British but the link gives a good idea of what's available.
 
OP
OP
rf9ridrer

rf9ridrer

Free Member
Sep 6, 2022
78
38
Funster No
91,133
MH
2007 ACE FIRENZE
I used these as tank heaters stuck to the bottom of both the fresh and grey water tanks.
https://www.ebay.co.uk/itm/12174432...d=link&campid=5338547443&toolid=20001&mkevt=1

To stop the grey waste dump pipe freezing I used trace heating cable from the tank to the dump valve.
https://www.ebay.co.uk/itm/18556399...d=link&campid=5338547443&toolid=20001&mkevt=1

Each tank has the temperature of the heat pads controlled by a digital thermostat with the thermocouple placed on the side of each tank about 60mm from the bottom of the tank.
I have these set to come on at 3 degrees and go off at 5 degrees C.
-Broken Link Removed-

I insulated the tanks with a double layer of bubble wrap insulation which has a foil coating both sides.
https://www.ebay.co.uk/itm/29354780...d=link&campid=5338547443&toolid=20001&mkevt=1

I taped the corners and edges and stuck the top edges of the insulation to the tanks with T-Rex tape which stick like the proverbial sh*t to a blanket.

The grey waste dump pipe I insulated with Armaflex pipe lagging.
https://www.pipelagging.com/pipe-in...ulation-lagging-black-nitrile-foam-class-o-2m

View attachment 683247

View attachment 683248

View attachment 683249
Thanks for that, i`ll have a look at the links.
 
OP
OP
rf9ridrer

rf9ridrer

Free Member
Sep 6, 2022
78
38
Funster No
91,133
MH
2007 ACE FIRENZE
When we had the Hymer I used something like


that worked well through a thermostat. If doing it today I would, of course, buy British but the link gives a good idea of what's available.
Thanks for that
 
OP
OP
rf9ridrer

rf9ridrer

Free Member
Sep 6, 2022
78
38
Funster No
91,133
MH
2007 ACE FIRENZE
I presume you are intending to travel to areas with continuous sub-zero temperatures, such as skiing. For occasional forays below zero I don't really think it's worth it especially if you've got external tanks, full tanks take quite a long time to freeze - you're more likely to suffer frozen supply pipes.
For your waste tank you'd be better leaving the tap open with a bucket underneath it, easier to empty a "frozen" bucket.
We have external tanks, was looking at possibly protecting them for when we return to the UK as we intend to go full time in the MH

Subscribers  do not see these advertisements

 
Jul 2, 2023
35
14
Macclesfield, UK
Funster No
97,043
MH
Don’t own one yet
Exp
I’m a newbie
I used these as tank heaters stuck to the bottom of both the fresh and grey water tanks.
https://www.ebay.co.uk/itm/12174432...d=link&campid=5338547443&toolid=20001&mkevt=1

To stop the grey waste dump pipe freezing I used trace heating cable from the tank to the dump valve.
https://www.ebay.co.uk/itm/18556399...d=link&campid=5338547443&toolid=20001&mkevt=1

Each tank has the temperature of the heat pads controlled by a digital thermostat with the thermocouple placed on the side of each tank about 60mm from the bottom of the tank.
I have these set to come on at 3 degrees and go off at 5 degrees C.
-Broken Link Removed-

I insulated the tanks with a double layer of bubble wrap insulation which has a foil coating both sides.
https://www.ebay.co.uk/itm/29354780...d=link&campid=5338547443&toolid=20001&mkevt=1

I taped the corners and edges and stuck the top edges of the insulation to the tanks with T-Rex tape which stick like the proverbial sh*t to a blanket.

The grey waste dump pipe I insulated with Armaflex pipe lagging.
https://www.pipelagging.com/pipe-in...ulation-lagging-black-nitrile-foam-class-o-2m

View attachment 683247

View attachment 683248

View attachment 683249
I like the look of that👍🏻, off topic though I see you have self levelling? Is that E&P? Is it a good system?
 
Jul 2, 2023
35
14
Macclesfield, UK
Funster No
97,043
MH
Don’t own one yet
Exp
I’m a newbie
Yes, it is the E&P system and has been great, we hummed and harred over the cost of the system before we had it fitted, but we would never have another MH without a self-levelling system on it now.
That’s good to know, I’m considering getting it fitted but have read some have had issues with rams dropping on their own ? Possibly a bad batch though
 
May 29, 2021
138
236
Kotka, Finland
Funster No
81,581
MH
Hymer Van
If no EHU is available that’s a lot of unnecessary power, you’re better off with a system that uses the vans own heating system.
Not really a viable option if you have external tanks under your van as ours are.

Sure it is. Our previous Hymer Ducato PVC (2011) had just that. The grey water was boxed (and most likely insulated) and one of the Trumatic heater ducts was blowing inside the box. The boxing had had (??) some damage before our time and wasn't repaired that good (gaps in the boxing) but it still worked up to -10c if it wasn't very windy.

The 2023 updated 'national park series' (Grand Canyon, Ayers Rock etc) Hymer Fiat PVC's have also fresh water under the belly and they promise it's 'winter proof', so guess they are satisfied with it. Although must admit, slightly worrying having the fresh 'on the outside' when the temperature starts to drop below -10c - if then van even ever arrives.
 

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