Advice on Shop Heater

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Forum topic by docspencer posted 04-01-2013 12:32 AM 1186 views 0 times favorited 11 replies Add to Favorites Watch
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291 posts in 1368 days

04-01-2013 12:32 AM

I’m looking at ceiling mount electric heaters for my shop. The shop is about 15 X 20, pretty well insulated.

Any thoughts on this one? Is it overkill?

NewAir G73 Electric Garage Utility Heater Shop Shed 5,000 W Unit Model G 73

BTW – I can get it for around $275 with free shipping via ebay.

11 replies so far

View woodbutcherbynight's profile


2302 posts in 1832 days

#1 posted 04-01-2013 01:04 AM

I looked at both the G73 and the G70. Both require 240 direct wired boxes but I bet a electrician tells you it can be done with a drier plug just to make it easier to put in, and remove if you had to. Both have plenty of heat capability. I see you are in Indiana and it gets under 32F for long periods of time so I will not recommend a heat pump as you would not be happy. Down south here in Ga I have a heat pump and it works well for both seasons. My friend has a G70 in his 20×20 shop and it does keep it nice and warm, warm enough he works in shorts and a tee shirt year round.

-- Live to tell the stories, they sound better that way.

View RogerInColorado's profile


321 posts in 1377 days

#2 posted 04-01-2013 04:21 AM

Go to a BTU calculator such as this one: and load your data. It will tell you the BTU range you need, then see if the heater you are looking at will do the job you want.

View TopamaxSurvivor's profile


17577 posts in 3099 days

#3 posted 04-01-2013 05:20 AM

Rule of thumb i learned as an apprentice is 10 watts per square foot. It should be plenty.

-- Bob in WW ~ "some old things are lovely, warm still with life ... of the forgotten men who made them." - D.H. Lawrence

View AlaskaGuy's profile


2398 posts in 1732 days

#4 posted 04-01-2013 08:51 AM

Here’s a pretty nice calculator that converts BTU to Watts. You don’t want you heater undersized or oversize.

-- Alaskan's for Global warming!

View Mark Davisson's profile

Mark Davisson

597 posts in 2740 days

#5 posted 04-01-2013 11:46 AM

woodbutcherbynight, I’m in Indiana, as well, and I heat my home with a heat pump. I am happy with it.

-- I'm selfless because it feels so good!

View Fred Hargis's profile

Fred Hargis

3848 posts in 1916 days

#6 posted 04-01-2013 11:56 AM

I have one of those heaters (Dayton label) and it works fine. When I bought this place, the shop was 16×24 and it heated fine (we’re about the same latitude, I’m just a little east of you).

-- Our village hasn't lost it's idiot, he was elected to congress.

View MrRon's profile


3898 posts in 2666 days

#7 posted 04-01-2013 08:08 PM has baseboard heaters, 2500watts, 10’ long for 35.99, brand new made by Raywall and Markel and 2000watt heaters, 8’ long for $24.99. Good price if you can use them.

View DrDirt's profile


4143 posts in 3165 days

#8 posted 04-01-2013 08:19 PM

I got a Farenheat unit from Northern Tool for 299. (was cheaper 4 years ago) but is still their #1 seller for garage heating.

My shop is 14X21 with 12 foot ceiling, and I have never run the unit more than 50%.

I SPECIFICALLY chose a unit that did NOT have any exposed heater filament wire that would be a fire danger. The elements are fully enclosed, so won’t ignite any vapors or sawdust. So look at the filaments in whatever you choose.

Product Details

Heats things up fast AND saves floor space! No blast of cold air at start-up — automatically delays fan action until the long-life heating element is warm. Fan continues until the heating element cools off. Built-in thermostat. Powerful heater delivers up to 17,065 BTU/hr. Horizontal heat flow and adjustable downflow positions allow it to distribute heat evenly throughout the room. Plated fin heating element provides uniform heated air discharge. 14in.L x 12 1/2in.W x 12 3/8in.H. 240 Volts, 5000 Watts at 17,065 BTU/hr. 21 Amps. Ceiling mount bracket included. U.S.A.

-- 'Political correctness is fascism pretending to be manners' ~George Carlin

View docspencer's profile


291 posts in 1368 days

#9 posted 04-01-2013 08:35 PM

Ron – I thought about baseboard heaters, but was worried about sawdust – I don’t have a collector and am VERY bad about sweeping up.

Nice tip, DrDirt. I guess I look at this model about a year ago and forgot about it. Looks like a good price and gets great reviews.

View DrDirt's profile


4143 posts in 3165 days

#10 posted 04-01-2013 08:41 PM

Yeah doc – - I chose this because contrary to some recomendations, I spray with an HVLP gun sometimes.

Just usually the little boxes and such, and open the garage door, but try to avoid having a hot ignitions source.

-- 'Political correctness is fascism pretending to be manners' ~George Carlin

View Manitario's profile


2393 posts in 2306 days

#11 posted 04-01-2013 09:01 PM

I have the Farenheat model as the main source of heat for my 17×30 shop; it keeps the shop comfortable even on the -30 days…

-- Sometimes the creative process requires foul language. -- Charles Neil

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