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Old 01-04-2013, 09:51 AM   #1
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HELP building garage heating system


Alright Im new here, Got this idea in my head of how to heat my garage just want to run it by some people that know what they are doing to point out any flaws in my design so I dont blow something up or catch something on fire.

got a 25x30 non insulated garage. does have a second floor which is insulated will help a little due to heat rises but yeah. I am not looking for 70 degree garage here just 40 maybe 50 enough to take the chill off work with no gloves n the winter type deal.

Looking for very lost cost here.

plan is to strip down a electric water heater and modify the inside metal tank into a wood burner, put a door, some air vents and chimney on it. done it before thats how i heat my shed. Then want to run some copper tubing around the inside top of it. not for sure what size yet. Run it out a few inches 90 it towards the ground and then run pex with the pieces of black pipe insulation on it down into the ground around foot foot and a half deep and to the garage. 2 lines in and out. Plan on putting 3 maybe 4 inch pvc in the ground and sticken up around a foot to run the pex and insulation threw to keep it dry. (going to do a metal box around the wood burner out of sheet metal for a pole barn make it look better and keep the wind from hittin the pipes and wood burner directly) The wood burner be around 15 to 20 feet from the garage.

then inside have a line that runs up the wall 10' walls and about 10 feet from the wall where I want to do a fan and a radiator out of a car run it threw that then back and down the wall to a couple gallon tank which will then go into a water pump with 1" in and out 60 gallons per minute (opinions on that will be welcomed) and then connect to the line that goes to the wood burner. My theorys on the tank is to make sure the pump always see's liquid and figure it will pump it threw and keep any air out of the lines since its just 1 line. and half about 1/2 to 3/4 of the tank air to help allow some expansion due to expansion from heat. Do plan on doing a pressure release valve near the wood burner outside. I am thinking box fan for the radiator. IF this idea works decent might do a duct work idea going accross the ceiling with the fan blown threw the radiator into it have it go side to side of the garage then down and blow out near the floor. Also want to use maybe antifreeze in this instead of water since it wont be going all the time and will freeze up if its just water. Had a friend mention to me just mix water and vodka since antifreeze is toxic (still need to do research on antifreeze and see whats all available) do have a pet dog and dont need a leak or a pressure release blow out and end up with a dead dog. Also figure if the water is 2 hot and not heating the garage enough can always get a second radiator T it and run 2 radiators and 2 fans.

I DO NOT have the money to put pex n the floor and pour a layer of cement over it. Wish we would of thought about it and run pex n the floor before pouring the cement.

ANY thoughts, comments, flaws, you wanna post feel free dont worry about hurting my feelings about this. I got a 80 gallon hot water heater already and lined up a radiator for a camero for cheap. got a extra box fan to use.

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Old 01-04-2013, 11:31 AM   #2
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HELP building garage heating system


While that amount of thought is admirable, it appears to be a whole lot of work and "back yard" engineering with potential pitfalls.

Having spent time in a similar sized garage, detached mind you, I know how cold it can get. With the/a unheated slab, it's a losing battle once the surface temps fall....

The heating source for the one I was in was nothing more than one of those torpedo style kerosene heaters. After the owner cleaned all the gunk out of it ( tank and filter ), that thing got it warm enough in there for short sleeves, albeit after running for about an hour. Cost is initial price of the heater, then the kero....

Another option for you, if the garage has decent electric, is for a wall hanging heater, like a Dayton. Then you have initial cost of the heater, but no consumable ( kero ) expense, only an increase in the electric bill. Both have positives and negatives, and you need to be aware of doing anything with volatile chemicals.

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Old 01-04-2013, 11:32 AM   #3
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HELP building garage heating system


Seriously, Vodka? I have had some bad ones that were probably better suited for that but there are antifreezes out there that dogs won't drink due to the taste.
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Old 01-04-2013, 11:43 AM   #4
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HELP building garage heating system


You really have to watch out for Gasoline fumes if you are working with open flame. This is dangerous. I think you should insulate the walls and your Overhead Doors before doing anything else. A Convection type Kerosene heater gives off a lot of heat.

Nice idea with the water heater though, I admire the approach.

I am using one for a batch solar tank in the spring to temper my incoming well water prior to HWH.
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Old 01-04-2013, 12:44 PM   #5
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HELP building garage heating system


Insulating it is possibly in the future. but not this winter. $$$ shortage reasons. the garage has new wiring but will rather stay away from electric and fuel heaters due to haven to pay for them. electric is not cheap. I figured if i do my idea between the pump and fan im only using maybe 500 watts of electric compaired to 1 or 2 1500 watt electric heaters. have no 220 outlets for the heavy duty garage electric heaters.

torpedo are nice but loud and the open flame I dont like. really if im in there building something and got saw dust floating around. Plus fuel costs. Figure even if i spend $500 in materials it SHOULD be a one time thing and be done with it. the amount of work it takes to make and install this does not bother me. IF it saves me money im not afraid to do work I try to do everything myself. Cheaper, I know exactly how it was done, and learning experiences then i can charge others to do it for them after i trial and error on my own. BUT with this, theres not much trial and error I want it to be a 1 time deal.

I live in Nothern Ohio BTW detached garage. Wood is easy to come by for me. got a local place that makes pallets and got access to there scrap wood. got drift wood that washes up from the lake and a few other sources just to get scrap junk wood and logs and such

yeah vodka, IDK he said mix it with the water. I figure this set up should only take a couple to a few gallons then w.e size tank I get.
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Old 01-04-2013, 01:09 PM   #6
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HELP building garage heating system


The alcohol in the vodka lowers the freezing point of water....but, it will also evaporate off....while glycol will not.

While the whole thing scares me.....I would like to see pics when it's done.....but I'm inclinded to think that money spent on gloves and warm clothes might be a better value....
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Old 01-04-2013, 01:16 PM   #7
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Alright ill have to look into glycol....it scares me some to thats why I am here so im not just going by whats n my mind the mind that has never done this before LOL.

well gloves are a pain to work in most of the time. I got lots of gloves and warm clothes but to try working in them and if building something it dont matter how well im dressed glue wont dry at 30 degrees LOL or paint wont dry either.
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Old 01-04-2013, 02:05 PM   #8
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Quote:
Originally Posted by ridinloudprod View Post
Insulating it is possibly in the future. but not this winter. $$$ shortage reasons. the garage has new wiring but will rather stay away from electric and fuel heaters due to haven to pay for them. electric is not cheap. I figured if i do my idea between the pump and fan im only using maybe 500 watts of electric compaired to 1 or 2 1500 watt electric heaters. have no 220 outlets for the heavy duty garage electric heaters.

torpedo are nice but loud and the open flame I dont like. really if im in there building something and got saw dust floating around. Plus fuel costs. Figure even if i spend $500 in materials it SHOULD be a one time thing and be done with it. the amount of work it takes to make and install this does not bother me. IF it saves me money im not afraid to do work I try to do everything myself. Cheaper, I know exactly how it was done, and learning experiences then i can charge others to do it for them after i trial and error on my own. BUT with this, theres not much trial and error I want it to be a 1 time deal.

I live in Nothern Ohio BTW detached garage. Wood is easy to come by for me. got a local place that makes pallets and got access to there scrap wood. got drift wood that washes up from the lake and a few other sources just to get scrap junk wood and logs and such

yeah vodka, IDK he said mix it with the water. I figure this set up should only take a couple to a few gallons then w.e size tank I get.
Ayuh,... then put a real woodstove, Inside the garage....

A properly assembled, 'n properly installed barrel stove kit will do what you need,...

Safely....
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Old 01-04-2013, 02:28 PM   #9
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Ayuh,... then put a real woodstove, Inside the garage....

A properly assembled, 'n properly installed barrel stove kit will do what you need,...

Safely....

Wish it was that easy. No room for one. plus the roof peak is 23ft roughly and for a chimney to properly work needs to be higher then the peak.
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Old 01-04-2013, 02:37 PM   #10
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like the wood stove suggestion much better but if you go with original idea check out propolyne glycol..used to winterize plumbing fixtures..non toxic
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Old 01-04-2013, 03:28 PM   #11
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Originally Posted by ridinloudprod View Post
Wish it was that easy. No room for one. plus the roof peak is 23ft roughly and for a chimney to properly work needs to be higher then the peak.
Ayuh,.... Not necessarily,... exit at the eaves....

On my ole barn, I've done it, on the West side, with no problems, 'n Good draft...
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Old 01-04-2013, 03:58 PM   #12
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there is just simply no room for a wood burner. thats another reason im not looking to do a torpedo heater, just no place to have it to saftly run it really.
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Old 01-04-2013, 03:59 PM   #13
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HELP building garage heating system


I know im asking for help. but im looking for flaws and suggestions for my plan. Ive done went over all the other heating suggestions. its pretty much this idea or nothing.
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Old 01-11-2013, 11:29 PM   #14
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Anyone have any info on this for me?
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Old 01-12-2013, 08:08 AM   #15
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Quote:
I know im asking for help. but im looking for flaws
Ayuh,.... Yer firebox will be too tiny to build any heat....

Yer copper wraps will be too small to gather heat....

Yer hot water, will be Cold, as it leaves yer 1st radiator...

Yer "Plan" has No chance of Workin'.... it'll be Wasted money to build it.....

'n I find it Funny, that you seems to think a salamander is gonna light off some sawdust in the air....

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