Booth heating

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PostPosted: Fri Nov 26, 2021 8:24 pm
Hi Guys,

Started to heat my shed "booth" today. Started out at 38' and after an hour it was up to 89' with the use of a bigger space heater and an oil filled radiant heater--both 110 volt. Not sure of the wattage of both of them right now. Turning off the space heater and only using the radiant one, I was able to keep 80' while I sprayed primer with the exhaust fan running--outside air was 30'. I was surprised that I could maintain those temps. I guess my insulation is working.

So......I am wondering if the combined wattage is similar, would a single 5000 watt 220 volt heater be more efficient than my 2 110 volt heaters? Saving floor space would be nice since I have only a 8x10 shop I am working in. The 220 volt unit I am looking at claims it will do a 500' ft. space so I could probably crank it up and sorta bake the paint for an hour or so. Thoughts?

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PostPosted: Fri Nov 26, 2021 10:06 pm
I use this to heat my 14 x 28 booth:
Space Heater.jpg
Space Heater.jpg (28.99 KiB) Viewed 1517 times


Here is a newer version of it: https://www.northerntool.com/shop/tools ... _200605393
1968 Coronet R/T


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PostPosted: Fri Nov 26, 2021 10:59 pm
'68 Coronet R/T wrote:I use this to heat my 14 x 28 booth:
Space Heater.jpg


Here is a newer version of it: https://www.northerntool.com/shop/tools ... _200605393
Similar numbers to the one I am looking at. Since my "shop" is only 80 sq. feet, I bet I could get it up to around 100' or so to sorta bake the paint. The Wife is all about saving $$ but I think 1 220 volt heater would be cheaper to run than 2 110 volt space heaters--what do I know though LOL.



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PostPosted: Sat Nov 27, 2021 6:08 am
I put elect heat in my Booth worked great for curing BUT the Bill was outrageous.
I also been looking at Propane with using a small Torpedo furnace for general shop heating again outrageous but if he two were combined ?

Still wish I could get Coal in my area.

There is also The Used Oil Furnace deal, Which you have to build yourself as Manufactured units are still very expensive.
Dennis Barnett
A&P Mechanic, FCC General radio Telephone Operator
Line Maintenance A&P Mechanic and MOC Tech specialist.



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PostPosted: Sat Nov 27, 2021 9:01 am
Doright wrote:I put elect heat in my Booth worked great for curing BUT the Bill was outrageous.
I also been looking at Propane with using a small Torpedo furnace for general shop heating again outrageous but if he two were combined ?

I have a torpedo unit that I thought I may use to get the temp up first but yesterday the combined radiant/space heater got it up real quick. I may try the torpedo first and then just the oil filled radiant to maintain.

Last winter I ran my space heater set at 50' in my car and a half garage. I wanted to have it take the chill off. I let it run for a month and it added about $80 to the electric bill. I'm hoping that the 5 hr. or so a couple times a month that the booth heat will be on that it won't be crazy $$.

I just fond this calculator.... https://learnmetrics.com/how-much-does- ... ic-heater/ I plugged in a 5000 watt heater and my price of power and got just under a dollar/hr. to run it. Not a big deal for the time I will be running it but stupid expensive if I let it run for days on end!

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PostPosted: Sat Nov 27, 2021 11:11 am
I heat my mine garage area with a wall furnace running on propane.
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PostPosted: Sat Nov 27, 2021 11:18 am
'68 Coronet R/T wrote:I heat my mine garage area with a wall furnace running on propane.
Yep, that would be the ticket. Our next place will either have a propane or (most likely) a gas heater in the shop area. A buddy of mine ran a gas line out to his shop and when he is not using it he sets it to 40'--he barely notices a difference on his bill.

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PostPosted: Sun Nov 28, 2021 9:27 am
So I am in Ohio and we have to take old man winter seriously at times. My workshop building is a pole construction with ribbed metal on the side walls and roof just at 1100 square feet. When I had it built I had my builder install 6 inch thick continuous fiberglass pack with fireproof inner sleeving. It was the same stuff he was using in his northern Indiana building and he said, "I can put a 5 gallon bucket of water in the building with NO heat in the winter and it will never show any signs of icing." Good enough for me. I run a simple unvented 30,000 btu (with auto fan) natural gas unit and have it set for roughly 45 degrees since we use it for storage and working on cars as needed. When we want to be in there for work we crank it up late the night before and we are at 65 to 70 on most average winter days here. I also have a portable 20,000 btu propane unit we can move around for concentrations of heat in areas. We have had recoreded temp.s outside my home here of 22 degrees below zero at night..... and yes, all was well in that building.....
Metal, wood, fiberglass, we work it all... www.furniturephysicians.com We can restore the irreplaceable!



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PostPosted: Mon Nov 29, 2021 5:35 am
Thats my problem right their! I never sprang for insulating my building when I built it now its so full of junk their is no way to do it easily, I have often thought about Spray foaming the whole place. My neighbor did his with it and it stays cool in summer and holds heat easily in winter. I have to just do it! it sure cure a lot of evils.
Dennis Barnett
A&P Mechanic, FCC General radio Telephone Operator
Line Maintenance A&P Mechanic and MOC Tech specialist.

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PostPosted: Mon Nov 29, 2021 9:06 am
Yeah, spray foam....it's huge around here. A lot of older converted buildings will have this done. They even go in and do it to older home with injection.
Metal, wood, fiberglass, we work it all... www.furniturephysicians.com We can restore the irreplaceable!
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