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Veteran Contributor
westphaljoe
Posts: 104
Registered: ‎06-11-2011

Re: heaters

A problem you may run into using a 20# cylinder.

 

Depending on how cold it is where you are, or if it's especially humid,you may run into a phenomenon known in the L.P. industry as 'vaporing out".

 

This occurs when an appliance is using vapor pressure faster than the supplying cylinder can produce it.

The most recognizable side effect of this is a frosty cylinder.

When it happens, the appliance stops firing or has difficulty, you shut it down and a little while later it works again, for a while. It gets worse as the cylinder gets emptier.

 

Vapor production within a cylinder or tank is a function of the liquid contents touching the inside walls of the cylinder, the "wetted surface". the more liquid, the more wetted surface = higher vaporization rate.

 

Consider using at a minimum a 100# (23.5 gallon) cylinder,  the usually silver one that is about 4 1/2 ft tall and 12-14" in diameter.

 

A better and more cost effective solution would be a 420# (120 gal) cylinderfrom a propane company. These are large enough that you wont run into the vaporing out issues in all but the coldest weather. ( you probably wouldnt want to be out there then anyway.)

 

These are about 5 ft tall and 30 " in diameter. they are also filled onsite from a tanker truck and the gas is usually sold in bulk at a reduced price compared to 20-100# cylinders. Pricing rates vary from company to company so ask questions.

 

Sorry if i sound like an advertisment for propane, I work as a delivery driver and service technician in northern MN.

Frequent Contributor
Boot Knife
Posts: 38
Registered: ‎11-06-2009
0

Re: heaters

Thanks Westpahljoe. I have noticed the 20# tanks sweating on my small burner. I live in northern IL so I guess I'll be pricing out a couple of 100# tanks.

Apprentice Contributor
grabber
Posts: 11
Registered: ‎12-01-2009
0

Re: heaters -Need helpful input on ventless propane heater for narrow 12X25 basement workshop

I have a 12X30 workshop that gets down to 50 degrees in the winter. I'm in S NY State. Lokkin for a portable propane heater for this space, ventless. I've looked into many types. Any reccomendations that you are personnally using is what I'm lookin for now would be greatly appreciated.
Esteemed Advisor
Larry-Jenkins
Posts: 3,422
Registered: ‎10-23-2009

Re: heaters -Need helpful input on ventless propane heater for narrow 12X25 basement workshop

I think most folks here would not recommend a "ventless" unit.

 

Larry

Larry.. East Central Iowa

Good enough.. Isn't.
Senior Contributor
habitatsupplie1
Posts: 759
Registered: ‎07-04-2011

Re: heaters -Need helpful input on ventless propane heater for narrow 12X25 basement workshop

I use a screw-on unit on top of a large propane tank. Since I have 20" roof, and the fact that I don't run it for an extended time, I have had no issues. You need more input on this. Could you call your local building and codes to find out what they say. They have been very helpful to me over the years. They are working for your safety.

Old Woodie
Apprentice Contributor
grabber
Posts: 11
Registered: ‎12-01-2009
0

Re: heaters -Need helpful input on ventless propane heater for narrow 12X25 basement workshop

I understand where you're coming from, but I've been using for years a kerosene heater that just heats the area above it and takes a loooong time to bring temps up in the rest of the room. CO detectors present and this is not the most air tight space. Thanks for the input, it's appreciated.

Frequent Contributor
kwhit1902111
Posts: 36
Registered: ‎12-24-2009

Re: heaters

  When I built my shop that is attached to my house's garage I insulated the walls & the ceiling. Then I put in a 220VAC electric heater in the ceiling. If I put the stat up to position 9 it's really toasty in there. Now, my shop's not that big, it's just 12 x 25 but it serves me ok. I can't go the kerosene way, I got a "THING" about kerosene. When I was a young pup we use to have a cabin up in the sticks. I was the second child & I got to sleep on the top bunk. Mom & Dad had a kerosene stove & furnace. I can remember laying up on that bunk nice & toasty & not being able to breath to a hoot. When I went into the USAF I had a hard time for awhile working around JP-4. It's kerosene, too. I just can't go the fire for heat routine in a wood shop. I've seen dust explosions & their nothing to laugh about.

Veteran Advisor
rfcomm2k
Posts: 1,640
Registered: ‎11-03-2009

Re: heaters

When you say you do not want it to cost too much are you implying to install, operate, or both?

 

Quartz style electric space heaters are one of the cheapest to purchase, but are fairly expensive to operate.

 

Propane portable heaters are not too expensive. I was cleaning up a 30' x 50' x 16' high workshop last winter and the only heat I had was from two of these attached to two grill type propane tanks. They did not make that large cavernous space warm, but they definitely took the chill out of the air! In a garage these should serve you better.

 

Another thing you can do to creates comfort is to lay down electric radiant floor pads like this and cover the shop floor with mats. This serves two purposes. The radiant pads create some heat that will rise up to meet you, and the mats make the floor more comfortable to stand on. A more expensive option but speaking from experience it is a lot more comfortable after it warms up.

Click for rfcomm2k's, PA Forecast

"If you don't have time to do it right, when will you have time to do it over?" Ira Zolper, 1970
Apprentice Contributor
grabber
Posts: 11
Registered: ‎12-01-2009
0

Re: heaters

I'm looking for efficiency more so than cost up front. If it costs a few bucks more but costs less to operate, so much the better. Radiant floor heat would not be feasible in my shop and you mentioned a 30' X 50' work shop. I have a pole barn that big with 16' ceiling and I tried to heat it with a very good size wood furnace. Talk about inefficiency !!

Thanks for your input, it is appreciated.

Honored Advisor
stick48668
Posts: 11,522
Registered: ‎01-15-2010

Re: heaters

water heater powered radiant floor heat...

comfy, comfy and more comfy...

 

more up front and very very good in the long run....



this would have been the week that I'd have finished chewing thru the restraints...
if only new layers hadn't been added....

Stick....

 

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