Mr. Heater 50,000 BTU Forced-Air Unit Heater (Propane or Natural Gas)

Update April 19, 2026 Alright guys, forgot to update you all last fall. I got frustrated last fall when I hit the switch and got the clicking to fire up the gas and nothing.. Turns out there was a little piece of fuzz or spiderweb plugging up the vacuum line that that needs to be clear to engage the solenoid that opens the gas valve. Cleared out the fuzz from the line and BOOM, it fired right up. So mechanically it was fine, just a little cleaning required. Still love this heater, it’s April in upstate NY and it’s snowing..So had to fire it up to work on my lawn tractor (a different issue, always something required to keep life moving forwards) and it reminded me I hadn’t posted an update. I still highly recommend this heater.. Update Feb 9. 2024 Still going strong. Absolutely NO issues.. Update: October 17, 2023 I flipped the heater on today after leaving it off since sometime in April.. Its been in the low 50's so I just wanted to take the chill out of the garage and sort out my tools for a fall project. The unit fired right up, warmed up the garage, no issues, just did its job. This unit has been very reliable for me, and I continue to recommend this heater for a garage. ------------------------------------------- I bought this heater in September of 2019 when I retired. I live in western NY where the winters are long, dark and cold. Since the wife doesn't want to snowbird in the south, I figured I better heat the garage, so I had a place work on projects. If you can run some natural gas lines and stick a vent through the roof, you will love this heater. I stuck a cheap thermostat on it from one of the big box stores, a separate house switch on it to flip it off for the summer months. I have had NO problems with it. It runs for 6 months during the cold months, then I flip it off at the end of April, when October comes, I flip it back on and it fires right up. It doesn't make any vibrating noise like some have said, vents out the garage roof using the double wall vent duct with a hat to keep the snow out. I insulated my garage walls and ceiling with standard R19 from HD, and drywalled it as well. My garage is 24' x 24' x 10' with concrete floor. This unit heats it with no problem. I should have installed one years ago. Also, I did not use an isolation relay to isolate the unit that protects the house wiring from "a pulse" from the unit when the solenoid kicks on and I have experienced no issues with the unit interfering with the house electric. I have broadband internet, smart switches, smart lights, Alexa, etc.. and have experienced no issues. If you're like me, live in the north and have some DIY skills and are sitting on the fence, just pull the trigger and buy it. You'll get a whole new play area for the winter months. :-)

So worth the price, and very easy to install. Yeah the exhaust duct work costs almost as much as the unit itself. But We'll Worth It!!! Heats up the Garage almost instantly, my Garage is a 1 1/2 car garage. It's 12°outside currently in Buffalo NY. 01/20/2020. Turned the heater on and it was warm in 7 minutes, about 60°. The fan is quiet, don't listen to the other reviews. Not saying that their unit was loud but maybe they had something wrong with their fan?? My garage is a Gym and to work out in the winter it's great to have the Garage Heated. This unit goes ABOVE and BEYOND my EXPECTATIONS. Im VERY PLEASED with the performance, the ONLY advice i can give is that THE DIRECTIONS SAY TO pitch the duct work UP a quarter inch per foot. DO NOT pitch it UPWARD!! the CONDENSATION will run right into the heater. Their is a Fan their inside the unit that will get wet and ruined. I had to fix this because for 1 i could not find a 4" piece that's shown in the instructions that had that DRIP HOLE where you have to attach a drip hose to. I don't know why you would want a hose hanging down from your exhaust anyway with nowhere to drain it to... "PRO TIP" So angle the duct work downward and this way the sweat/ Condensation will run outside - out of the exhaust. If not you're going to have sweat and condensation running towards the heater ruining and rusting the inside of the heater. That's the only thing that I seen in the instructions that were horribly wrong. Everything else was a breeze. The gas line, the electrical, the thermostat simple work. I am installing a smart thermostat so I can control it from my phone, So when I wanna go out there and work out I will turn to thermos son 5 minutes before I go out their. Thank you, hope this review helps someone.

This is amazing. Wish they would stop raising the price. Would be nice to get another one. Everything works great on it. Auto shutter-off works, heat feels great, airflow is perfect. Looks good and is stable hanging up.

After hanging the unit and running the exhaust pipe out, gas piping, electrical wiring and low voltage wiring to the thermostat I was now ready to flip the switch and energize the unit. NOTHING?....just as I expected the 3 amp fuse on the control board was blown, replacing it was an easy fix turned the power back on, venter blower came on and unit shutdown....Now what? upon looking I quickly noticed that the clear tubing hanging down was not connected to the pressure switch so I pushed it on and tried again. This time it fired right up and performed as expected! It is a quiet running unit, unlike my other one that I paid a lot more money for. Lack of Quality Control at the factory is why I am only rating 4 Stars instead of 5. I am happy with the purchase and would recommend at this point. I will give update if there is any changes.

A great heater! Good install instructions. Make sure you read them and follow them! Lots of good guidelines. Heater itself is heavy but seems to be built well. I added a nest thermostat. Easy to wire a power cord on and easy to get exhaust and gas line hooked up. This is going to be a game changer for when I get back from plowing in the winter! I have natural gas and it came set for that. They do include the kit to switch to LP. I’ve tested this a few times when it’s been cooler recently and the garage heated up extremely fast! FYI I did a lot of research before install, but as I said the instructions are laid out well.

Interestingly enough this heater can be installed with either the flat side up or the flat side down. And since the centerline of the exhaust duct is not on the center line of the heater this allows you to either have the duct coming to the heater at a higher or lower elevation depending on which way you flip the heater. This is a good thing as it allows the heater to be either lower or higher as required. The spring loaded dampers seemed to work quite well in the sense that they hold their position.. The Garrish Mr. heater sticker can be easily removed if you desire. Apparently the code requires a height of 8 feet clearance under the heater which is as best that I can tell is because they are worried about vehicles moving into a garage and hitting the heater.? So this might not be your concern. Always install a smoke detector and a carbon monoxide detector and have a fire extinguisher in your garage.

I was able to raise this heater to the ceiling and to install it all by myself. I also install the new gas line across my garden and in my shop. The heater works as expected and it i quiet. I love it. Jan 17 2021. 3 days ago my heater died. The heater is warranted for 3 years (36 months) and I have it for just 28 months. So it still is under warranty. My shop was freezing. I contacted the manufacturer by e-mails and phone numerous times. I was never able to talk to anyone and no on answered my emails. No knowing what to do I contacted Amazon customer service ( no an easy thing to do) who told em there is nothing we can do, you are on your own. I have ben a maintenance mechanic all my life. I took the heater apart and I determined that the control board was fried. I called a local gas heater specialist to see if he could do something to help me. He charged me $79.00 to tell met that there was nothing he could do to help me. I find on the Internet a reference number for the faulty C.B and I found one to buy locally. I replaced the C.B and my heater is working again. I also determined that I am able to repair the original C.B to keep it as spare. My total cost for the repair is about $160.00 in addition of my time. I do not expect to ever hear from Mr Heater so before buying on of these heater beware of the total lack of customer service and support.

I waited a month to write this review. Initially after the unit was installed there was a horrendous noise coming out of the heater. Apon further inspection it was determined that the circulation fan was defective. I contacted customer service. Wait times were extremely long. I sent them video of the unit running with the noise. They also concluded it was something with the fan. They do not do overnight shipping. We were in the subzero weather, and I needed the fan to work. I removed the fan and saw where the issue was. The tabs around the collar that slides over the spindle where loose. I used a large deep well socket to clear the fan blades, small hammer and a flat ended punch. I pressed the secondary tabs that were still upright down and used a torpedo level to make sure the fan was level and balanced. I reinstalled the fan and the noise was gone. The heater has worked very well since then. My replacement fan came 5 days later. They need to do better with quality control. It would also be nice if they sold packages which had the heater and the stove pipe included. The stove pipe is a much as the heating unit. That was shocking!

Looks good and works well. Requires venting, mounting bracket and thermostat sold separately.

Great for a shop or an area where heat on demand might be required. Parts are readily available and now they offer a direct vent package a separate cost. I bought this unit with the intention of installing in another building as the one that I purchased in 2012 is still working fine other than a circuit board that I had to replace this year that was also available on here at a fair price just like the heater.

Very good

Became intermittently noisy after about 3 days in operation and very noisy after about a week. Mr.Heater wasn’t much help. Amazon replaced it on the 29th day. New heater was shipped to me but without prepaid return shipping. I had to pay return shipping but was credited the shipping cost onto my account. New heater has been working great since the install. Very quiet. Heats my 24x26 garage nicely. I did find the exact same heater in town on sale for $100 less with a regular price equal to Amazon. Do your homework and check locally first. Edit: September 4/19. Tried to start heater to test for the upcoming season and nothing. Verified 120acv and thermostat to be ok. Will attempt to contact Mr.Heater to resolve this issue.

Had the unit professionally installed in a new workshop space. Went in without problems, worked when first fired up, and ever since. Puts out a lot of heat in a short time, but without scorching its mounting or surrounds.