Creepy
Administrator 
Dartmouth
Posts: 18,718
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Post by Creepy on Nov 26, 2008 11:21:21 GMT -4
i'm sick of the torpedo kerosene heater, and want to keep the shop above freezing all winter. does anyone have a link to a good heat load calculator? does anyone have experience with electric unit heaters? sometimes called construction heaters. they look soo small. i got a 4000W one for free. just looking for info....  here's a bit i found: approx 30BTU/ft^2 required- is this too low for our climate? 3.4 BTU/Watt for conversions I'm looking at these: www.stelpro.com/en/produits.php?prod=RUH |
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Post by tothewall on Nov 26, 2008 11:51:20 GMT -4
I looked into baseboard heaters and learned that there is a rule of thumb of Sq footage x 10 to give the number of watts required to heat a given space... My garage is approx 600 sq ft, so I need 6000W. I am thinking that baseboard heaters to that amount along with a thermostat set to 7C will keep everything from freezing and I will be able to turn the heat up as needed over the winter.
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Post by ©Big6™ on Nov 26, 2008 11:53:41 GMT -4
Put in floor Radiant in the old mans garage....
1300' of Pipe was $500
Electric Boiler and all the fittings, expansion tank, circulator, etc was $1200
I was able to get the glycol for free (about $100 value).
Haven't hooked it all up yet, but will report the cost in a year to heat a 28 x 40 space....
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Post by tothewall on Nov 26, 2008 11:56:58 GMT -4
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Roy & Charlene
Jeeper
"Gettin' Older: It's no place for sissies"
Posts: 3,745
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Post by Roy & Charlene on Nov 26, 2008 11:59:30 GMT -4
My garage is only 22' x22' insulated. I got a small oil furnace in it and it's set at 41deg. Last year it cost me $150 to heat it. and it has two big doors on the front. Roy  |
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Post by tothewall on Nov 26, 2008 12:02:13 GMT -4
I knew Roy would be the resident expert...
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Post by Ken McIntosh on Nov 26, 2008 12:18:55 GMT -4
I'm no expert,by anybody's standards but I picked up a 4800 watt constuction heater at Kents a couple of weeks ago because Im moving my propane furnace to the other end of the garage.
The heater needed 20 amp service so I called Tdog to come over and set it up for me.
This thing works great. So much so that furnace lost it's priority in the things to do yesterday list. ;D
Heater was around $80.00 tx in
I was working in a t-shirt last week in -9 days.I still don't have my 10x10 door insulated either.
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Post by tothewall on Nov 26, 2008 12:23:13 GMT -4
Well then... There may be a run on those... Da Dog may be busy... BTW... I think he should change his handle to DoggyStyle. |
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Roy & Charlene
Jeeper
"Gettin' Older: It's no place for sissies"
Posts: 3,745
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Post by Roy & Charlene on Nov 26, 2008 12:24:44 GMT -4
I knew Roy would be the resident expert... LOL ;D It's the cheapest way I found to heat my garage  |
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Post by mostheman on Nov 26, 2008 13:37:53 GMT -4
Jan we used those 220v beige cube construction heaters at my old job. We woorked it out to about 20 bucks a day per heater in energy consumption. They ran full bore all night from 6 Pm to 7 Am. Must be a cheaper option. Buy lens old wood Stove......
I have a kerr Scotty furnace in my garage. We had it hooked up for a while and would feed it lumber scraps and anything else that would burn, not premium fuel wood anyways. We could go out before supper Light it and get it going then go eat supper. Come back out after you were done eating it would be 20+ and tshirt weather. a 20x30 space with 12 foot ceilings. Outside walls insulated and no insulation on sliding doors or man door.
Furnace is now disconnected because of insurance. we need a 7" selkirk put in. Its a $1200-1500 and we have been procrastinating for 7 or 8 years.
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Jeepy
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Posts: 1,216
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Post by Jeepy on Nov 26, 2008 13:54:18 GMT -4
I use a kerr scotty for the house, garage has a forced air propane, i tried a couple winters ago to keep it above freezing ( garage is well insulated) but 20lbs of propane would not last a week. When my addition is done i will be moving the heater and looking at a large propane tank.
Other than ground source heat pump or wood scraps all other sources of heat are $$ and probably fairly close in cost, convenience is another thing, electric is easiest to install, baseboard is quietest, forced air dries best but is noisy.
$20 a day for one of the 4800 watt construction heaters is a lot to pay over a month.
I guess if i were in your shoes the baseboard would be what i'd look at, just make sure the thermostat will go low, many do not.
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Creepy
Administrator
Dartmouth
Posts: 18,718
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Post by Creepy on Nov 26, 2008 13:57:35 GMT -4
Moe, do you know the wattage on those suckers? that's outlandish. $20/day? they are availiable in a wide range of sizes.
I don't want a woodstove, even tho i already have the Selkirk installed. insurance hates them, i don't want to load it or deal with firewood or wait for it to warm up.
Roy - where did you find a "small" oil furnace? can you grab a pic of the size of it if you get a chance? what are you using for an oil tank? got a plenum and ducting? how does it vent?
running heating oil or diesel? does insurance bother you?
Ceiling fans - who is using them? I will definetly be adding one or two. heat rises, i have open span trusses.
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Jeepy
Jeeper
Posts: 1,216
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Post by Jeepy on Nov 26, 2008 14:01:17 GMT -4
A popular choice for a small oil furnace is out of a mobile home, about 2.5' x2.5' x 5' high and the air blows out of the bottom.
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Post by tothewall on Nov 26, 2008 14:01:40 GMT -4
Thats why I am thinking of going with baseboard heaters and a digital thermostat. I want to do like Roy and just keep it a few degrees above freezing with the option to warm it all up in the event I have work to do.
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Post by mostheman on Nov 26, 2008 14:05:58 GMT -4
No I dont know the wattage on the suckers....was a bulk purchase from a Richie Brother Auction.....might have been a high wattage mother....they sure cracked out the heat we ran 6-10 of em.
Selkirk isin't a 7" is it LOL.......
I don't mind hardwood its free for me, we sell 200 ish chord a year anyways and we burn it in the house. I guess I'm just used to it. I wouldn't want to heat any other way. But the insurance company does make it a royal pain to deal with.
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