Master Kerosene/Diesel Forced-Air Heater, 3,500 sq. ft., 140,000 BTU

Works well. Delivered FAST! Best price at the time of purchase

After 1st fill up the tank started leaking at the seam

Has to be plugged in. Works great , goes through diesel fast. Pointless in a power outage

We had to buy a new Heater during our recent cold snap to keep the pipes from freezing in the old milking parlor. It works great and has no trouble keeping the room warm.

Even with layers of thermal, the brutal sub-freezing temps we’ve been getting this winter in the Northeast are too much to safely and efficiently work in. We have a 2,000 square foot garage on the end of a multi-unit building, with a bay door on either end, and it’s poorly insulated. Anything liquid freezes, you can see your breath any time of day. Today I finally broke down and got this heater - it had great reviews and it wasn’t much more than the used ones I was looking at on FB. Right out of the box I filled it with clean pump kerosene, brought it to our shop, and set it up “unassembled” (no wheels or handles) on a Homer bucket. Fired up first try, and after 10 minutes I could feel it on the other side of the shop. I’ve had to work in hats and winter gloves until today - I even took my sweatshirt off and could have skipped a layer of thermals. I turned it off after a few hours and was fine for the rest of the evening. Worth every penny of the asking price - trust me. I don’t usually do reviews but I’m that impressed.

Worked great from Nov 1 to Jan 25 then started spitting fuel but not igniting. Will try to return under the Neighbors Rewards. Will see how that goes.

Needed heat to start my frozen compact tractor. Carefully aimed it at the injection pump for ten minutes and it stated right up! Assembly is fast with no tools needed except axle nuts. So far it’s a great investment around the farm.

Bought this item today so this review might be premature but I was impressed by this heater. I used premium diesel to run it. Adjusted the screw on the back to decrease the fuel pressure because factory it is designed for kerosene. I didn’t have any issues with odors or fumes. You do get some when starting it or if it cuts off and comes back on. The thermostat does run a little high. I’d say about 10 degrees higher than the normal temp. I put 3 gallons in. I ran it for about 1.5 hours and still had about a gallon left. So I say the capacity and run time is about accurate to what the manufacturer claims. No issues with leaking and fueling was easy. Recommend getting a flex nozzle. It heated up a large uninsulated pole barn fairly quickly. Raised the temps over 20 degrees in the 1.5 hours it was ran. No issues with condensation or the building “sweating” but also need to run it more. Build quality appears good but room for improvement due to the thin sheet metal. The added wheels and handles make for easy mobility. It is loud but I did expect that when purchasing. Overall and for the affordable price I recommend!

The auto on and off with the thermostat use does not work the greatest. Otherwise I love it

I absolute best fuel heater I have owned. I am 50 yrs old and I figure I had had ten of them over the years!!! This is a beast , not bad on fuel either. Shuts off at desired temp never had any issues at all!!10 rated!!!!

Wonderfull product. Great buy

Heats shop up fast does burn a lot of fuel but worth it also it is loud

Heater is used in a 500 square foot area. Works great.

Great heater, easy to put together, burns clean, thermostat works great, keeping my 20 x 50 greenhouse nice and toasty for the cooler months

The store cancelled my order no call. I paid for it why would they cancel my purchase????

Just purchased this Master Diesel heater for our house that is under construction. The drywall contractor wanted the heat on in the house but the HVAC guy said No Way! So, we purchased this 140,000 BTU heater to get the job done. It works great! The temps have been well below freezing at this heater keeps the house nice and toasty. It is a bit loud but it works great and heats wonderfully. Tractor Supply had it in stock and on sale to boot! It was a better price for similar units from other stores. And, from what I read, Master heater parts are readily available and not so much from the other brands. Great Purchase!

This is my 2nd heater the first was purchased in 2018 and still works great

Perfect for shop use. Bought to keep shop warm till furnace was installed and it workds great with the thermostat.

This is my 2nd Master heater. I have a 1700 block building that i work out of, making custom cabinets. This heats up my space well, and there is alot of dust and this heater stands up to the dust . I use off road diesel for my fule. Again i recommend this product

Just added fuel, plugged it in, and turned it on. It's loud (like all heaters of this design), but it does a great job.

Well your timing is perfect. As a brand new unit, out of the box, it runs for about 20 seconds and shuts off. Error code E1. Didn’t burn one tank of fuel yet.

Could not purchase in the store. The heater had taken a very hard drop and the fan was grinding on the housing. I found the fan motor mounting bracket badly bent. Remove and hammered back straight. Reinstalled and the heater is working very well. A good heater but is a bit on the noisy side. I would recomend to my friends. Diwn graded 2 stars for having to work on and repair a brand new product. It was very well packed, so that had to ve a very hard drop.

Great working heater. Keeps shop warm

Awesome heater works great and pumps heat

junk right out of the box . never worked

This heater worked great at taking the cold chill off in our 40’x60’ pole barn garage. It was in the teens outside. Making it more comfortable to get work done.

works like a champ and heats up my 1000 square foot shop quickly.

Easy setup and works great!

Fresh out of the box, would not start. I was on the phone with customer service for over an hour and was told sometimes even new parts would be faulty, great customer service not great product.

Not disappointed in the heat output. Using diesel for fuel, no foul smells like my previous similar heater. Very happy with the price and purchase overall