View Full Version : how much will 1500 watts heat
12-16-2005, 12:42 PM
I am looking to buy something inexpensive to put in my booth at night to keep the temp around 70-75.I have a 28x15x 9 room.I was looking at those heated oil heaters at once place and most said 1500 watts..IM familiar with btu's,but how much heat or what size room can you heat on 1500 watts?
Is the room insulated?
What temperature is it outdoors?
Are you talking about one of those radiator-type heaters?
12-16-2005, 02:55 PM
I have roughly the same size area. Walls and ceiling are insulated with a conventional foam filled metal garage door gasketed when closed. My unit is a small wire coil 1300\1500 watt unit with a good fan. I can easyly maintain 50 degrees with the 1300 watt setting even through the cold snap we're having this week up here in NE.
12-16-2005, 04:42 PM
Chris, last month I purchased one of those 1500 watt oil filled electric radiators for my apartment. The room I wanted to heat is approximately 8' x 13' x 14'
With the heater turned on high, I couldn't get the room temperature to rise over 63 degrees. For what it's worth, the room temp without the heater was about 52 degrees. Also, it's chilly outside, maybe 40 degrees. Insulation is so so in the room.
Couldn't you just purchase the thing, try it out, and return if it didn't meet your expectations? That's what I did.
12-16-2005, 05:05 PM
Like Len said, it'll really depend on what the outside temps are where you are. If it's really cold like it is where I am right now (below 32), 1500 may not do a heck of a lot. I have a 25x25 shop, no insulation, and a 15Kw electric furnace. I can get it up to 70 or so in these sub freezing temps.
12-16-2005, 08:50 PM
Just another idea, not sure whether you already have a 240 Volt outlet setup, but if you already do, then using a 4000 Watt heater can deliver quite a bit of adequate heat.
If your inclined to wire it up yourself, or know a buddy who can, the cost in parts and picking up a used 4000 watt heater are fairly inexpensive (and certainly less so that buying a new oil warmed heater).
I have come across several of the same sort of 4000 watt heaters, used, for $20-$40 (sure you can spend more, but 4000 Watts of power being used, all the same way, means for putting out the same heat)...I set a few fans at the ceiling to circulate the warmer air down, and can maintain a pretty comfy temp in a single bay (tented off in an uninsulated 2 bay garage, holds about 75 when it 30 outside).
12-16-2005, 09:24 PM
Again, without knowing outside temp and degree of insulation, one can only guess, but I would highly recommend a 220V, 4800 watt construction heater. They have a thermostatically regulated dial, so they will shut off when desired temp is reached. We use them up here in the frozen north of Canada (Winnipeg) where it's not uncommon to see -35 to -40 temps. It will maintain room temp in a 1400 sq ft home that is insulated to local standards (r20 walls, r40 ceilings and tripane glass). They are cheap, around $60 Cad, safe and flexible. Use it to take the chill off on a cool 32 above day, heat the shop to shirt sleeve temp on a -40 degree day.
12-16-2005, 09:40 PM
Yes my shop is insulated on the walls..and for the ceiling,i actually have insulated 16 ft garage door panels that work quite well.With the booth open and sharing heat from the oil furnace,it will stay about 50,no matter how cold it gets.I'd like to have it up around 70 tho so it would help the curing process.RIght now at night its anywhere from 20-30 F typically.
12-16-2005, 09:41 PM
Not too mant shops are insulated with R20 walls and R40 ceilings .A 4800 watt heater is only putting out 16,382 btus. So unless your shop is really insulated and air tight it isn't going to do the job. Unless i'm missing something here. Mooch
12-16-2005, 10:00 PM
Nice job and detail on your project. I didn't see what was wrong with the right side sail fin. When was the last pic taken? Looks good. Nice to have a partner too. Henry
12-17-2005, 02:56 PM
In a previous repair the quarter was gas welded on (with a crude overlap seam across the sail panel) then beaten down so that bondo could be applied. Last pic was taken a few months ago.
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