Instruction: Output yes if the supporting document can answer the given question. Otherwise, output no.

Input:
Question: can you put a wall switch inline so you can turn it on and off. Also, how long does it take to heat up a 40 degree garage (insulated)
Document: I installed the unit December 20, 2014 in my 30x30 metal building that is well insulated. So far I am satisfied with its performance, and quietness of operation. On cold days it does take a little time to heat up the building. To keep from using my circuit breaker to turn it on and  off or using a latter to turn the thermostat down, I installed a &#34;double-pole double-throw&#34; 30 amp switch in series with the thermostat to cut the unit on and off for my convenience when leaving the building.
It has only half the btu's of the propane unit, but there is no need to open a window or door for ventilation. It also has a thermostat, so you can set it (to a number, not a temperature), and come back 30 minutes later and be in relative comfort. On days in the low 30s, it will keep the garage in the 60s, which is fine for working.. (My attached garage ceiling and 2 walls are insulated.) My heater is mounted high up on a wall, but it can also be mounted to hang from the ceiling, as long as the clearances laid out in the instructions, are followed.
Also bought a 6' 10/2 lead to run from the heater to the junction box ($12). Problem free installation, although the terminal block in the heater is a little too close to the knockout. Thermostat knob has 10 positions. I have it set on 2nd lowest and it keeps my 22' x 24' uninsulated garage at 40 degrees (in Dayton Ohio--outside temps running about 10 degrees at night and 20 degrees daytime). Garage door and one wall are insulated--remainder is drywalled but not insulated.
I ran the same 10/2 wire from the thermostat to the boards the internal thermostat wires were on (put push clips on the ends to match the one I was replacing / bypassing) and it works great - even though the thermostat is of by about 10 degrees, which reviewers of the thermostat indicated. I get about 220 degrees output according to my laser thermometer which I feel is low according to some reviews, but again, does the job. Easy to install using a direct wire. I also installed an inline cut off switch just above my thermostat just because I always seem to go above and beyond....better safe then sorry.
I received this heater as a Christmas present and promptly installed it in my 4 car garage. I live in Chicago, and during this time of year (early January) the outside temperature is ~5-10 degrees when I leave for work. My garage is insulated, located under the first floor of the house, and has an insulated and sealed door. Without heat, the garage will stay around 40 degrees in this weather.I connected the heater to a programmable switch that turns the heater on so the garage is warm when my wife and I wake up and leave for work, turns it off while we're out of the house, then turns it back on before we arrive home.
I bought this heater to heat a 2-car insulated garage in New England. After installation, I found that the fan would constantly cycle on & off every 1-2 minutes, never staying on long enough to really distribute any heat. I spoke with Marley customer service and they explained that this was by design, that a seperate fan control cut out the fan when the temp was too low. Pretty dumb design if you are trying the heat a cold space. They advised me that I could jumper past the fan switch which entailed dismounmting the entire heater element and fan panel from the box....not any easy task when mounted to the ceiling.
I typically work Monday--Friday 7:30am to 5:30pm. During that time I put the thermostat on the heater on full blast. When I quit working I turn temp to lowest setting and when I return next morning my garage is about 50 degrees. My electric bill during the 3 months I run constantly will be about $75 a month higher than normal. This heater mounted conveniently to my celling. It doesn't take a lot of space at all and is very quit when its running
All I can say is this heater is fantastic. I have a non-insulated garage not connected to the house and after only 1 hour it raises the temperature a good 20 degrees. I don't need to work in shorts and a t-shirt so this is plenty to take the nip out of he air and allow me to work in the garage all winter long!
I choose this one as I liked the thought of warm air on the discharge (as opposed to hot air), easy quick installation, lack of an open flame in my garage with gas filled engines, and could always move it to other locations if/after the garage was enlarged.I have had this installed since early Nov 13 in my 13 x 26 garage. One long wall and one short wall are shared by heated rooms on other side, but entire rest of garage is insulated. Everyone that lives in the NE knows that this has been the coldest winter on record; 3 solid months of daily low temps between 0-15F, with daily highs 20-30F.
Purchased this heater for a three car, ~ 700 square foot, insulated garage. Temperatures in the hi plains dip to the 20s and the teens often during the winter, and the wind is always a factor. Also purchased 25' of 10/2 w/ ground via Amazon Prime. Had to get the 30 Amp DPDT circuit breaker from a local big box store - that ran about $9. Figure I'm in it for just under $290.Heater comes wired from the factory to put out 5000W but, from the instructions, I gather that one could change some wiring around to reduce output.
Answer: yes