Heater for garage 24x30

[rentonhighlands]

Hello Forum Members
I am thinking this is a good option to heat my shop. What do you think?
Shop is 24x30x10

http://www.qcsupply.com/21021-qmark-muh-electric-unit-heater-75-kw.html#resources

I think I would want to install this in the upper corner on the other side from my man door. I would put this on its own breaker. I currently have open studs but working on the insulation for it. I am thinking it would be a good idea to run the wire before drywall.
Does this have to be hard wired? Or can I install a breaker and run wire to a box?

 

[D45]

Electric is an expensive way to heat your shop

Why not natural gas or propane?

 

[rentonhighlands]

I do not have natural gas at my house. Propane I do not know much about. With propane would I have to install a tank outside?

 

[dandan111]

You will want the heater hard wired. You can run the wire to a box and cover it for now. After you install the heater it can be wired and connected in the junction box. You will want
to make sure you have the correct gage wire and breakers for the unit.
Gas is cheaper to run. I like the electric myself.

 

[Jazz1]

Depending on your location heating electrically could be prohibitively expensive. Propane is your best alternative if thats the case. Propane is about as complicated as your bbq

 

[Longhair]

I just installed one of these http://www.king-electric.com/pdfs/GH.pdf in my wife's she shack 14'x28'. We bought the 5000k unit, Has been great so far. I have a 7500k in my 22'x24' does a decent job.

My local Menards carry's King heaters and they are made in the USA!

 

[rentonhighlands]

Longhair:
Thanks for this information. I too like the King heaters. When you say "decent job" does it heat your space up? about how quickly? And how loud is the fan? Also is it hard on your bill?

7500k is the right size for my space. My space is 30LX24WX10T 10 foot ceilings.

I am looking at this model
http://www.king-electric.com/pdfs/KBECO2S_WEB.pdf model KB2407-1-B2-ECO

 

[Falcon67]

Similar, except mine is only 5kW. 7.5kW IMHO would need a 40A breaker and appropriate wire for the run.

 

[dandan111]

I have one like falcon has. 5000k. I'll run my milk house heater sometimes. I can heat up over 60deg in a half hour or so on a 30deg day. I also have 10 ft
Ceiling. 3 car garage. Big R sells these under the fahrenheat name. Made in the
USA.

 

[Stuart in MN]

Nothing wrong with an electric heater. As mentioned they are more expensive to operate on a per unit basis, but if they are used intermittently (say, a few hours during the week and then again on Saturday afternoon) it's not that big a deal.

However, the original poster really needs to do a heat loss calculation to determine what size heater is required...that depends on their location (Alaska or Arizona), how warm they want to keep it inside the garage (50 or 72 degrees), the size of the garage and how well it's insulated, along with other factors.

 

[rentonhighlands]

Thanks Falcon67

I have changed my mind on the King heaters. The mounting bracket looks very week on the King heaters.
I live in Western Washington State. In the winter it sometimes gets below 32 degrees. This year has been an exception last couple weeks 22 degrees. But when it is that cold I am not going to be in the shop anyways. For my purposes I would turn the heater on when it is 32-40 degrees and want to heat to 65.

I am not looking at this heater.
Fahrenheat FUH724 240-volt Garage Heater, 3750-7500-watt
It has very good reviews on amazon.

What thermostat can I use with this heater. I know there are line voltage and low voltage but I do not know the difference. What way is the best way to go on a thermostat?

7500W / 240V= 31.25A X 1.25= 39.0625A
what size breaker and what size wire will I need?

https://www.amazon.com/dp/B0087FS92Q/?tag=atomicindus08-20

 

[Freddo]

I live in Eastern Washington. It is most likely a good deal colder than where you are at in Western Washington. I have a 22 x 32 x 10' garage. I installed the 5000 W. Fahrenheat heater. It will get my garage warmed up to shirt sleeve temperatures within about a half an hour. I have been running it while we had single-digit temperatures outside this past month and it is done a great job. When I have used it in the past, heating the garage two or three times a week and maybe on a Saturday I did not even notice a change in my bill, but using it 24 hours a day this past month my bill did jump up significantly. (about $90 more) I think it would depend on the insulation you have. My garage is insulated With r19 in the walls and ceiling and I have insulated garage doors. I think a 7500 W heater would do a great job for you. As far as wire size and breaker, I am not sure. I believe we used number 10 wire with a 30 amp breaker on my 5000 W heater.

 

[R_einan]

I live in Eastern Washington. It is most likely a good deal colder than where you are at in Western Washington. I have a 22 x 32 x 10' garage. I installed the 5000 W. Fahrenheat heater. It will get my garage warmed up to shirt sleeve temperatures within about a half an hour. I have been running it while we had single-digit temperatures outside this past month and it is done a great job. When I have used it in the past, heating the garage two or three times a week and maybe on a Saturday I did not even notice a change in my bill, but using it 24 hours a day this past month my bill did jump up significantly. (about $90 more) I think it would depend on the insulation you have. My garage is insulated With r19 in the walls and ceiling and I have insulated garage doors. I think a 7500 W heater would do a great job for you. As far as wire size and breaker, I am not sure. I believe we used number 10 wire with a 30 amp breaker on my 5000 W heater.

I'm in eastern WA also and was planning on installing the king 7500 watt in my 28x28 but money got earmarked for more important projects... glad to hear that the electric won't kill me once I get it installed.