40 Watt tube heater (1 Viewer)

Spade

LIFE MEMBER
Aug 5, 2014
211
62
Funster No
32,691
MH
dethleffs
Exp
Still a newbie
I am thinking about buying one of these heaters for frost protection at home for the van, and for use with an inverter when camping.
I have 2 110 AH batteries so am thinking that the battery drain might not be high.
I have looked and am baffled by the online consumption calculators.
There is a larger 80 watt one as well, that might be more powerful.
What would your thoughts be on this type of heater please

 
Feb 22, 2011
9,113
17,766
Newcastle under Lyme
Funster No
15,397
MH
Hymer B544 A Class
Exp
Since 2015
Used for long periods it will kill your batteries, much better to use gas heating if you have it.
In winter, when you'd want to use it, you're probably already giving the batteries a good work out with lights, TV, water pump, charging phones etc and virtually no solar.
Assuming your not on ehu of course
 
Apr 6, 2019
3,459
6,651
Eye, Peterborough, UK
Funster No
59,702
MH
RV
Exp
FourWinds Windsport 6.8L V10
40 watts on 12v is 3.5 amps.
You have 110ah of battery to actually use. 3.5 amps equates to roughly 31 hours.
But that assumed a perfect set up and no losses. So round down to 24? hours of heater before battery bank is at 50% (flat)

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pappajohn

LIFE MEMBER
Aug 26, 2007
42,963
47,023
Dark side of the moon
Funster No
172
Exp
Since 2005
40 watts ....As much use as t!ts on a bull.
They are designed to sit in the bottom of a wardrobe or pantry.
I was in a workman's cabin one winter and they had a 500w version.
Plastic carrier bags were melted to it
 
Jun 12, 2017
1,304
3,244
Telford
Funster No
49,010
MH
A class Pilote
Exp
2017
40 watts ....As much use as t!ts on a bull.
They are designed to sit in the bottom of a wardrobe or pantry.
I was in a workman's cabin one winter and they had a 500w version.
Plastic carrier bags were melted to it
Or mammary glands on a he pig! šŸ˜‚

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Mar 30, 2022
1,198
1,049
Funster No
87,744
MH
Swift Suntor 590RL
Spade I have 2 of the 60 watt ones in the cabin of my boat. I run them in winter on a timer when my boat is on mains hook up in the marina.
They stop condensation forming on the bare fiberglass ceiling.
However my boat cabin is much smaller than a Motorhome.
Personally I don't think even 2 of the 60 watt ones would do anything in a Motorhome and if not on hook up would flatten your leisure batteries pretty quickly.
 

Shrimp

Funster
May 27, 2015
3,882
30,899
Bedfordshire, UK
Funster No
36,573
MH
Hymer B584
Exp
Long time
We had two tube heaters in the van one winter.
One was a 80W and a 40W, ran them alongside a small oil filled rad.
The small one we put in the washroom-it just about took the chill off.
The bigger one went in the cab area-always a cold spot, it did help a bit but without the rad as well we would have been cold!
On its own a tube heater is fine for the area of a cupboard but not much good as heating!

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Mar 23, 2012
9,104
29,710
sleights
Funster No
20,245
MH
c class
Exp
1
The 80w one will be more powerful as it's 80w and the other is 40w so it's twice as powerful!. You could alternatively find an old 40w bulb and use that it will provide just as much heat as the 40w heater. Do you really think a single 40w bulb would make any difference to the temperature in your MH?
 

68c

Oct 22, 2019
1,715
2,561
Southampton
Funster No
65,959
MH
2001 Pilote 270
Exp
Since 2004
Your 40watt energy will be released as light or heat, or split between the two. The light bulb will allow you to see the frost forming as the meagre amount of heat energy fights the cold. The heater will release it's energy as heat alone, except from the glow of its LED.
 
Mar 23, 2012
9,104
29,710
sleights
Funster No
20,245
MH
c class
Exp
1
Your 40watt energy will be released as light or heat, or split between the two. The light bulb will allow you to see the frost forming as the meagre amount of heat energy fights the cold. The heater will release it's energy as heat alone, except from the glow of its LED.
An ordinary light bulb only turns 5% of the energy into light and the majority will fall on the internal walls and be released there. You could also close the blinds to screw the last few drops of energy out in your damp cold cell.

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Bobbydaisy

Free Member
Oct 13, 2021
517
747
Funster No
84,839
MH
Elddis CV20
Got a 40w towel rail, fitted one in every van I ve had , works surprisingly well and is hot to touch , dries dogs towels and coats hung above but I think would do very little other than heat close proximity around its location .
FF745910-EA1D-4FD1-B7CD-E47BF5B63E09.jpeg
 
OP
OP
Spade

Spade

LIFE MEMBER
Aug 5, 2014
211
62
Funster No
32,691
MH
dethleffs
Exp
Still a newbie
Thanks very much for all the helpful answers.
Happy Xmas to all
 

68c

Oct 22, 2019
1,715
2,561
Southampton
Funster No
65,959
MH
2001 Pilote 270
Exp
Since 2004
An ordinary light bulb only turns 5% of the energy into light and the majority will fall on the internal walls and be released there. You could also close the blinds to screw the last few drops of energy out in your damp cold cell.
Did not believe incandescent bulbs only released 5% of energy as light so googled it. Suprised to find it may be as low as 2% with the majority of the rest being in the infra red spectrum, heat. Yet another thread that has threatened my idea of how the world works.

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JockandRita

LIFE MEMBER
Aug 2, 2007
11,162
139,291
Lincs/Cambs border
Funster No
49
MH
N+B Flair 8000i
Exp
Since May 05 (Ex Tuggers).
I am thinking about buying one of these heaters for frost protection at home for the van, and for use with an inverter when camping.
I have 2 110 AH batteries so am thinking that the battery drain might not be high.
I have looked and am baffled by the online consumption calculators.
There is a larger 80 watt one as well, that might be more powerful.
What would your thoughts be on this type of heater please

Martin funflair ?

I've not used them yet, so unable to comment.

Cheers

Jock. :)
 
Apr 27, 2016
6,560
7,425
Manchester
Funster No
42,762
MH
A class Hymer
Exp
Since the 80s
Did not believe incandescent bulbs only released 5% of energy as light so googled it. Suprised to find it may be as low as 2% with the majority of the rest being in the infra red spectrum, heat. Yet another thread that has threatened my idea of how the world works.
To be fair, the 95% of heat is usually not 'wasted', in that it contributes to the heating of the room. Except of course if you are opening the windows to cool, or worse, running air-conditioning to cool the room down.

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Mar 23, 2012
9,104
29,710
sleights
Funster No
20,245
MH
c class
Exp
1
Did not believe incandescent bulbs only released 5% of energy as light so googled it. Suprised to find it may be as low as 2% with the majority of the rest being in the infra red spectrum, heat. Yet another thread that has threatened my idea of how the world works.
That's why LEDs are so much better. Halogen is slightly better than an ordinary tungsten but not much.
 
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Feb 13, 2012
82
224
Cheshire
Funster No
19,811
MH
Elddis 115 Vogue
Exp
Since 2010
Got a 3 foot one in the shed, about 130 watts I think. During the cold spell the other day it was -6 outside and +2 in the shed. Just about keeps the frost out so I don't think a 40 watt one would do much.
 

68c

Oct 22, 2019
1,715
2,561
Southampton
Funster No
65,959
MH
2001 Pilote 270
Exp
Since 2004
Now my inquisitive nature led me to wonder just how hot I am. It seems about 100Watt, so if I can convince SWMBO to sit in our darkened van all winter she should be able stop any condensation. Breathing through a tube to the outside of course.

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Nov 13, 2011
1,452
3,301
Lincolnshire
Funster No
18,889
MH
PVC
Exp
30 years
Now my inquisitive nature led me to wonder just how hot I am. It seems about 100Watt, so if I can convince SWMBO to sit in our darkened van all winter she should be able stop any condensation. Breathing through a tube to the outside of course.
She would be more effective if she ran up and down or press ups. Her heat output would be greatly increased. :rolleyes: :rolleyes:

Geoff
 
Nov 13, 2011
1,452
3,301
Lincolnshire
Funster No
18,889
MH
PVC
Exp
30 years
Perhaps if she was naked it would increase the area outputting heat. Think I will wait until she has cooked my supper before asking her.
Why wait, you already know what the answer will be :xwink: :xwink:

Geoff

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