Replies

1. 
   WayneL5 | Jun 08, 2006 03:58am | #1

   Your welder can run on two different voltages.   Since the power is the same regardless, the current is different for each voltage.  At 220 volts your welder draws 144 amps, at 440 volts it draws 72 amps.  Double the voltage and the amperage draw drops in half.

1. 
   KylefromKy | Jun 08, 2006 04:16am | #2

   Excellent! Thanks for the information.

2. 
   chile_head | Jun 08, 2006 06:40am | #3

   Kyle:

   I have a 20ft square garage in the Detroit metro area, and a 20 to 30k btu kerosene heater that theoretically should be adequate. It isn't.

   The heater will easily keep the garage at a comfortable temperature, but it takes forever to get it there. Unless the workshop will be continiously heated, I'd look at something significantly larger than 30k.

   Oh, and fifty degrees isn't too cold. Fifty degrees, when everything you touch is 19 degrees, is absolutely freezing.

3. 
   Tim | Jun 08, 2006 03:59pm | #4

   "..the gas company says I need to use more to help them out.."

   Tell them they need to charge less to help you out!

   If you had the heat well distributed, 30,000 should cover the shop, more or less. If the shop is used intermittantly, like most home shops are, consider a little more for quicker heat up when you need it. Detroit Radiant, under the trade name of Re-Verber-Ray, makes an excellent residential product in the form of a low temp infrared tube heater, that can be mounted with limited clearance.

   Take a look at http://www.reverberray.com/products/ld.html

4. 
   LeeGrindinger | Jun 08, 2006 04:22pm | #5

   I've got a Reverberay heater in my shop, it's 25 X 50 with a 14 foot ceiling at the peak. It's a great, I mean really great, way to heat a space. My heater is 30 feet long.

   Be aware that it's hotter closer to the burner. The heat tapers off as it runs the length of the tube. I'd suggest you position the burner away from the main workspace if this is possible.

   I would strongly recommend the dual BTU one, the LS series, http://www.reverberray.com/products/ls.html Mine is 50,000 or 75,000 BTUs and rarely do I use the higher setting because it's uncomfortably warm. The 50,000 setting is very comfortable, I live in Montana. They have a 25,000/50,000 that would be great for you. I'd guess the 25,000 setting is where it would work best for you.

   I trashed the line voltage thermostat that came with the unit and replaced it with a household type mercury one. I also just put in a switch to flip it from 50,000 to 75,000 at the thermostat.

   It's a great heat, very comfortable, efficient and quick.

   Lee

1. 
   KylefromKy | Jun 09, 2006 06:13am | #6

   The tube heaters look interesting. No prices on the website. How much do they run?

1. 
   LeeGrindinger | Jun 09, 2006 04:42pm | #7

   Mine was around $900, about the same cost as a unit heater. Find a distributor near you and check it out.Lee

5. 
   GaryGary | Jun 11, 2006 02:34am | #8

   Hi,

   Your heat loss with 65F inside and 30F outside, and R13 walls, R19 ceiling, 40 sqft of R2 windows, a slab floor with perimeter insulation, and one air change per hour infilatration is just over 15,000 BTU per hour. If you have big shop doors that are not well insulated or leaky that could go up quite a bit.

   If you have colder outside temps, the loss is linear with the difference between inside and out side, so going down to -5F would make the heat loss 30,000 BTU.

   As has been mentionded, some margin for starting up with a cold shop might be a good idea -- although, I'd think the radiant heating provided by this heater would produce at least some instant heat.

   Don't know if you have a big south facing rollup door or not, but this is the only heat I have in my shop -- on sunny days its good down to -20F -- great lighting.
   http://www.builditsolar.com/Projects/SpaceHeating/SolarGarageCollector/garcol.htm

   Gary

1. 
   KylefromKy | Jun 11, 2006 05:15pm | #9

   Looks cool! I mean warm!
   It won't work for me, though. I'm building insulated shop doors that open outward. The shop has a cathedral ceiling with a clerestory overhead and I wouldn't want a roll up door jutting into the airspace.
   However,I might use that technology on a rental house, someday. Thanks for the response.

   
6. 
   sundirect | May 13, 2022 05:39am | #10

   Infrared heating panels are the best heating solution for every home, they will help stay warm without the great expense. Infrared heaters are considered the best energy-efficient heating solutions. They don’t waste energy, and heat is not retained in the air, but in the structure of a living space, which allows infrared heaters to maintain a comfortable temperature