Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 12-01-2018, 07:45   #61
Moderator Emeritus
 
GordMay's Avatar

Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 31,742
Images: 240
Re: Cabin Heaters: Which is Best and Why?

Quote:
Originally Posted by SaucySailoress View Post
... Has anyone ever used a 12v heater like this in a small space? ...
Not very much heat, at about 150 Watt (or less).
__________________

__________________
Gord May
"If you didn't have the time or money to do it right in the first place, when will you get the time/$ to fix it?"



GordMay is offline   Reply With Quote
Old 12-01-2018, 11:04   #62
********* Emeritus
 
SaucySailoress's Avatar

Cruisers Forum Supporter

Join Date: Apr 2010
Posts: 8,240
Re: Cabin Heaters: Which is Best and Why?

Quote:
Originally Posted by GordMay View Post
Not very much heat, at about 150 Watt (or less).
But enough to take the edge off things?
__________________

__________________

SaucySailoress is offline   Reply With Quote
Old 12-01-2018, 11:19   #63
Moderator
 
Dockhead's Avatar

Cruisers Forum Supporter

Join Date: Mar 2009
Location: Cowes (Winter), Baltic (Summer) (the boat!); somewhere in the air (me!)
Boat: Cutter-Rigged Moody 54
Posts: 20,182
Re: Cabin Heaters: Which is Best and Why?

Quote:
Originally Posted by SaucySailoress View Post
But enough to take the edge off things?
The only edge it will take off is from your batteries.
__________________
"Parce que je suis heureux en mer, et peut-Ítre pour sauver mon ame. . . "
Dockhead is offline   Reply With Quote
Old 12-01-2018, 11:49   #64
Registered User
 
Auspicious's Avatar

Join Date: Jun 2003
Location: Chesapeake Bay
Boat: HR 40
Posts: 1,836
Send a message via Skype™ to Auspicious
Re: Cabin Heaters: Which is Best and Why?

Quote:
Originally Posted by SaucySailoress View Post
But enough to take the edge off things?
I agree with @Dockhead. 150W is not helpful in warming things up. You might as well turn on a couple of light bulbs.

You'll get more useful heat by percing a pot of coffee. Consider a small propane heater. Play "rock, paper, scissors" to see who has to get up and start the engine to get some real heat in the camper. Start a portable generator and run a real heater while you charge batteries and heat water. Stack your clothes close at hand and put on socks and long underwear under the covers. Get a bus heater for whatever fuel you run your camper on.

You wouldn't buy a 150W hair dryer. Don't expect anything useful from a 150W heater.
__________________
S/V Auspicious
AuspiciousWorks
Beware cut and paste sailors
Auspicious is offline   Reply With Quote
Old 12-01-2018, 12:03   #65
Registered User
 
Stu Jackson's Avatar

Join Date: Jan 2011
Location: Cowichan Bay, BC (Maple Bay Marina)
Posts: 6,452
Re: Cabin Heaters: Which is Best and Why?

Quote:
Originally Posted by SaucySailoress View Post
So... we do NOT need heat on our boat - we have no intention of ever leaving the tropics in it! BUT, at the moment we're in the UK and travelling a lot in the campervan. And it's winter here. And cold at night when the engine (and therefore heater) is off. Not a problem for sleeping we have doubled up the duvets.... but in the morning it's a bit uncomfortable getting dressed.

Has anyone ever used a 12v heater like this in a small space?

I was thinking of wiring it directly into the housekeeping battery... and connecting a switch so we can use it while stationary. Any feedback?
As others have said: Useless. Get a catalytic heater fed by green propane bottles (US). Use the techniques mentioned for getting dressed, then fire it up. It takes but a few minutes to get going. I don't have heat on our boat unless plugged in. Having moved to southwest BC in 2016, that heater has been fine for shoulder season at anchor or on park docks with no electricity. It's equivalent to a 1500 watt electric heater. Nowhere near as good as my friends' diesel heaters, but I haven't gotten there, yet. Good luck.
__________________
Stu Jackson
Catalina 34 #224 (1986) C34IA Secretary
Cowichan Bay, BC, (Maple Bay Marina) SR/FK, M25, Rocna 10 (22#) (NZ model)
Stu Jackson is offline   Reply With Quote
Old 12-01-2018, 12:34   #66
Registered User

Join Date: Jan 2014
Posts: 602
Re: Cabin Heaters: Which is Best and Why?

If you use the propane heater, make sure you have a window(s)/door(s) cracked open to lit in combustion air otherwise bad things can happen.

We used to use a white gas heater years ago when camping but always had windows open in the vehicle or tent. We stayed warm even with the openings.

Later,
Dan
__________________
dannc is offline   Reply With Quote
Old 12-01-2018, 13:16   #67
Moderator
 
Dockhead's Avatar

Cruisers Forum Supporter

Join Date: Mar 2009
Location: Cowes (Winter), Baltic (Summer) (the boat!); somewhere in the air (me!)
Boat: Cutter-Rigged Moody 54
Posts: 20,182
Re: Cabin Heaters: Which is Best and Why?

You don't need heat, camping out in winter in the UK? I'm writing this from one of the warmest spots in the UK, and I am tell you that I sure need heat. It's 6C right now. My Eber is not functional and I've got about 5kW of electric heat going, and it's just about comfortable.

I would sure spring for a small Webasto or something, if I were you. Or one of those inexpensive Russian Planar heaters which are popular in the UK at the moment..
__________________
"Parce que je suis heureux en mer, et peut-Ítre pour sauver mon ame. . . "
Dockhead is offline   Reply With Quote
Old 12-01-2018, 14:05   #68
Marine service provider
 
newhaul's Avatar

Cruisers Forum Supporter

Join Date: Sep 2014
Location: puget sound washington
Boat: 1968 Islander bahama 24 hull 182, 1963 columbia 29 defender. hull # 60
Posts: 4,313
Re: Cabin Heaters: Which is Best and Why?

I agree get a little planar off eBay the 3k unit can be had for $200 USD and it comes with its own 2.5 US gallon fuel tank. In a campervan dead easy install.
__________________
Non illigitamus carborundum
newhaul is offline   Reply With Quote
Old 12-01-2018, 14:07   #69
Marine service provider
 
newhaul's Avatar

Cruisers Forum Supporter

Join Date: Sep 2014
Location: puget sound washington
Boat: 1968 Islander bahama 24 hull 182, 1963 columbia 29 defender. hull # 60
Posts: 4,313
Re: Cabin Heaters: Which is Best and Why?

Quote:
Originally Posted by Dockhead View Post
You don't need heat, camping out in winter in the UK? I'm writing this from one of the warmest spots in the UK, and I am tell you that I sure need heat. It's 6C right now. My Eber is not functional and I've got about 5kW of electric heat going, and it's just about comfortable.

I would sure spring for a small Webasto or something, if I were you. Or one of those inexpensive Russian Planar heaters which are popular in the UK at the moment..
come on 6c that's 43f. Aka tee shirt and shorts weather
__________________
Non illigitamus carborundum
newhaul is offline   Reply With Quote
Old 12-01-2018, 18:27   #70
********* Emeritus
 
SaucySailoress's Avatar

Cruisers Forum Supporter

Join Date: Apr 2010
Posts: 8,240
Re: Cabin Heaters: Which is Best and Why?

We just drove down to the in-laws for xmas. It went down to minus 9 the first night, so the MiL let us and the dogs sleep on a mattress in the basement. I can't tell you what a relief it was....!
__________________

SaucySailoress is offline   Reply With Quote
Old 12-01-2018, 19:21   #71
Moderator
 
a64pilot's Avatar

Cruisers Forum Supporter

Join Date: Oct 2013
Location: Albany Ga.
Boat: Island Packet 38
Posts: 17,560
Re: Cabin Heaters: Which is Best and Why?

The only low wattage thing that will give decent heat is an electric blanket, electric throw or maybe a heating pad.
To get the air warm in the morning a propane heater with a reflector is hard to beat, itís not a leave on kind of thing due to CO and fire danger, but in the Military I carried one and would light it about 20 min before getting up and it would drive off the damp chill.
__________________
a64pilot is offline   Reply With Quote
Old 12-01-2018, 22:41   #72
Registered User
 
SailRedemption's Avatar

Join Date: Feb 2014
Location: New Orleans
Boat: Kaufman 47
Posts: 797
Re: Cabin Heaters: Which is Best and Why?

For a campervan, I would have already installed a remote start. Wale up, reach for your keys, push a button and your van starts up. All from the warmth of your bed. When the van warms up, get up and start your day. We have it on our truck and it's essential when we visit in Massachusetts in winters.
__________________
SailRedemption is offline   Reply With Quote
Old 13-01-2018, 15:23   #73
Senior Cruiser

Cruisers Forum Supporter

Join Date: May 2013
Location: Oregon to Alaska
Boat: Wheeler Shipyard 83' ex USCG
Posts: 1,756
Re: Cabin Heaters: Which is Best and Why?

If you're in a cool/cold climate, a diesel stove is probably the best solution. It gives a lot of heat, you already have the fuel, and by adding a coil, you can make hot water, too. Most new stoves come with a water coil or have the option. In warm weather I have a couple induction hot plates that can work off the inverter. My bbq can double as an oven.
I spent a lifetime on the water and picked a large boat for my last one. An old 83', wood planked hull. I wanted comfort and I spend my time in the North Pacific. I can heat the boat with diesel, wood, wood pellets and electricity. The cheapest way is wood, if available free and I do the work. Otherwise about $150/cord. But storage is a big problem. In really cold weather about 2 cords a month. Adding some coal lumps on overnight burns helps in the morning (about $5/5gallon bucket). Next cheapest is wood pellets. If diesel is cheap ($2/gallon), then it beats electricity, $.07/kwh where I am. Average winter heating, near the Oregon coast is about $7/day for the whole boat. At 0į about $12-15/day using a combination of diesel, pellets, and electricity. With a little thought, I tied it all together with hydronic heating and engine coolant.
Propane would come in between wood pellets and diesel, but I don't use explosive fuels inside the hull. My alternators aren't shielded, etc., and I've had enough of that kind of excitement.
Todays diesel doesn't burn well. Some complain of soot. Using #1 diesel or adding a catalyst to #2 solves the soot problem with a proper stack.
__________________
Lepke is offline   Reply With Quote
Old 14-01-2018, 17:06   #74
********* Emeritus
 
SaucySailoress's Avatar

Cruisers Forum Supporter

Join Date: Apr 2010
Posts: 8,240
Re: Cabin Heaters: Which is Best and Why?

Quote:
Originally Posted by a64pilot View Post
The only low wattage thing that will give decent heat is an electric blanket, electric throw or maybe a heating pad.
To get the air warm in the morning a propane heater with a reflector is hard to beat, itís not a leave on kind of thing due to CO and fire danger, but in the Military I carried one and would light it about 20 min before getting up and it would drive off the damp chill.
I guess we'd better just keep putting the kettle on in the morning then!
__________________

SaucySailoress is offline   Reply With Quote
Old 14-01-2018, 18:25   #75
Moderator
 
a64pilot's Avatar

Cruisers Forum Supporter

Join Date: Oct 2013
Location: Albany Ga.
Boat: Island Packet 38
Posts: 17,560
Cabin Heaters: Which is Best and Why?

We have an electric throw, on the sticker it says 130 Watts.
I have measured close to 100W on high with a Kill-A-Watt meter, but whatís interesting is when you turn it down, it then pulses that 100W on and off, the lower the setting the longer time between pulses and I assume the shorter the on pulse, but Iíve not really studied it. I ought to leave it on the kill a watt as it will tell me the cumulative draw.

Meaning we can stay toasty warm in the bed for I think about 50W or less which is about a 5 amp draw on battery, or say 40 AH for an eight hour night. It may well be less.
That ainít bad.
We put a light blanket on top of the heated throw to hold in its heat.
__________________

__________________
a64pilot is offline   Reply With Quote
Reply

Tags
cabin

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 00:55.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.