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88% positive over last 12 months
Mr. Heater F260560 Big Maxx MHU80NG Natural Gas Unit Heater,Black, 80,000 BTU
Delivery & Support
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- This item is non-returnable, but if the item arrives damaged or defective, you may request a refund or replacement.
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Delivery & Support
Select to learn moreAmazon
Amazon
- You will be able to track your Amazon order from point of shipping to your doorstep in your orders. If you need more help with tracking your package, please visit Track Your Package.
- Learn more
- This item is non-returnable, but if the item arrives damaged or defective, you may request a refund or replacement.
Our specialist Customer Support for large items dispatched from Amazon is on hand to help with your order. Contact us via phone or chat 7 days a week.
Purchase options and add-ons
Brand | Mr. Heater |
Special Feature | High temperature safety shut-off |
Color | Black |
Product Dimensions | 22"D x 30"W x 27"H |
Mounting Type | Ceiling Mount |
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About this item
- Your purchase includes One Mr. Heater Big Maxx Natural Gas Heater with 2 angle brackets & Liquid Propane conversion kit | Thermostat, hose & regulator not included
- Heater dimensions – 29.33” L x 15.50” W x 26.37” H | Coverage area – 2000 Sq. Ft. | Performance – 80,000 BTU | Amps – 2.3 | Voltage – 120 V | Min 8 ft. clearance from floor to base of unit
- For use with natural gas | Category 1 vertical, category 3 horizontal venting
- Powered exhaust allows for vertical or horizontal venting | Spark ignition features self-diagnostic control module
- This heater offers the operating versatility and safety that you have come to expect from Mr. Heater | Limited 3 year warranty on parts and burners
Customer ratings by feature
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This Item Mr. Heater F260560 Big Maxx MHU80NG Natural Gas Unit Heater,Black, 80,000 BTU | Recommendations | dummy | dummy | dummy | dummy | |
Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | |
Price | -38% $608.49$608.49 List: $985.58 | $649.99$649.99 | -46% $178.60$178.60 List: $329.99 | -15% $364.60$364.60 Typical: $429.00 | $219.99$219.99 | $596.63$596.63 |
Delivery | Get it as soon as Wednesday, Mar 27 | Get it as soon as Wednesday, Mar 27 | Get it as soon as Wednesday, Mar 27 | Get it as soon as Wednesday, Mar 27 | Get it as soon as Wednesday, Mar 27 | Get it Mar 29 - Apr 2 |
Customer Ratings | ||||||
Easy to install | 4.2 | — | 4.1 | 4.3 | 4.1 | — |
Value for money | 4.0 | — | — | 4.3 | 4.2 | — |
Comfort | 3.6 | — | — | 4.4 | 4.2 | — |
Sold By | Amazon.com | Amazon.com | Amazon.com | Amazon.com | Amazon.com | Michaelsons |
power source | Gas Powered | Gas Powered | Corded Electric | propane | Corded Electric | Corded Electric, Gas Powered |
heating method | Forced Air | Convection | Convection | Forced Air | Forced Air | Forced Air |
heating coverage | 2,667 sq ft | — | 170 square feet | 1250 sq ft | 1250 sq. ft. | 700 square feet |
heat output | 80000 btus | 80000 btus | 20000 btus | 50000 btus | 25600 btus | 50000 btus |
weight | 88 pounds | — | 17 pounds | 63 pounds | 23.6 pounds | 63 pounds |
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From the manufacturer
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Air louvers with 3 locking positions |
Easy outside access to thermostat and A/C terminals |
High powered fan |
Powered exhaust allows for vertical or horizontal venting |
Learn More | Learn More | Learn More | |
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Customer Reviews |
4.5 out of 5 stars
1,334
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4.5 out of 5 stars
660
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4.3 out of 5 stars
114
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BTU | 50,000 | 80,000 | 125,000 |
Heats up to | 1,667 sq. ft. | 2,667 sq. ft. | 4,167 sq. ft. |
Fuel type | Set for NG - Includes LP conversion kit | Set for NG - Includes LP conversion kit | Set for NG - Includes LP conversion kit |
Includes brackets | ✓ | ✓ | ✓ |
WIFI/Digital thermostat compatible | ✓ | ✓ | ✓ |
Product guides and documents
Product information
Brand | Mr. Heater |
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Special Feature | High temperature safety shut-off |
Color | Black |
Product Dimensions | 22"D x 30"W x 27"H |
Mounting Type | Ceiling Mount |
Room Type | Home Office |
Heating Coverage | 2,667 sq ft |
Burner type | Radiant |
Voltage | 120 Volts |
Item Weight | 88 pounds |
Department | Unisex Adult |
Manufacturer | Mr Heater |
ASIN | B00KRFVJ4Y |
Country of Origin | China |
Item model number | F260560 |
Customer Reviews |
4.5 out of 5 stars |
Best Sellers Rank | #96,483 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden) #106 in Outdoor Heaters |
Is Discontinued By Manufacturer | No |
Care instructions | See product manual |
Assembly required | Yes |
Number of pieces | 1 |
Warranty Description | 3 year limited on heater parts; 10 years limited on heat exchanger. |
Batteries required | No |
Included Components | heater, natural gas to propane conversion kit, and ceiling mounting brackets |
Import | Imported |
Warranty & Support
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Mr. Heater Review After 1 Year! Why We love it!
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Product Description
If you are looking to turn your garage or barn into a work space you can use all year-round, you will have to find a safe quiet and reliable heat source. This 80,000 BTU Natural Gas Unit heater is the way to go. It uses a built-in electric high velocity fan to pull cool air into the rear of the heater, across a heat exchanger, then forcing warm air into the surrounding areas. These heaters only require 115v AC power and can be vented vertically or horizontally - please check local codes and restrictions. With a mounting clearance of only 1 inch, the supplied brackets, external access to power, and thermostat connections - installation is a cinch. With the Durable Spark ignition and robust factory standard self diagnostic control module, we can offer a 3 year factory warranty on all parts and burners and a 10 year warranty on any defects in the heat exchanger. This heater offers the operating versatility and safety that you have come to expect from Mr. Heater.
Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers like the performance, heat, and ease of installation of the space heater. For example, they mention it works well, heats up good, and does a great job of maintaining the temperature. That said, some complain about the quality and noise.
AI-generated from the text of customer reviews
Customers like the performance of the space heater. For example, they say it works well, is easy to install and operate, and the fans work well. Some say the thermostat went out in about a week. However, most are pleased with its performance and value. The heater works great for garages and hunting shacks, and is quiet. Some mention it's efficient and can be used to heat up large spaces.
"...I am very pleased with it's performance and value, you will be too...." Read more
"First, The heater is installed and running great...." Read more
"...The unit is fairly quite and works well. Installed in a 2400 sqft insulated shop and can easily maintain 60F." Read more
"...It has been very efficient...." Read more
Customers like the heat produced by the space heater. For example, they say it's easy to install, heats up good, and does a great job of maintaining the temperature. They also mention that it takes up less space and makes more heat quicker. Overall, customers are satisfied with the performance of this furnace.
"...refill at current prices this beast is both economic and simply keeps me toasty and in my shop a hell of a lot. I’m a happy chappy!" Read more
"Great furnace" Read more
"Great heater, great value. Put it to use in my three car detached garage. The garage is fully insulated and thus the heater warms it easily...." Read more
"...Our shop is insulated and this heater does a great job of maintaining the temperature even in cold Ohio winters. A+A+" Read more
Customers find the installation process of the space heater to be easy. They mention that it comes with straightforward instructions and parts. Some say that the thermostat hook up is easy.
"...Instructions easy to follow for an experienced Do It Yourself. I am very pleased with it's performance and value, you will be too...." Read more
"...The installation was painless and easy and I converted the unit to Propane from the original Natural gas...." Read more
"I had this heater installed in less then a day, very easy to install, the venting and thermostat and other hardware you have to buy separate is..." Read more
"...Seems sturdy and well made. Manual is sufficient. So why only 3 stars? The exhaust temperature is much higher than the others I've had...." Read more
Customers appreciate the value of the space heater. They say it's a good product for the price, easy to install, and heats up well. Some customers also mention that it'll cost less to replace than repair.
"...Around $300 a tank refill at current prices this beast is both economic and simply keeps me toasty and in my shop a hell of a lot. I’m a happy chappy!" Read more
"Great heater, great value. Put it to use in my three car detached garage. The garage is fully insulated and thus the heater warms it easily...." Read more
"...I am however beyond happy with it. It is a great product and is built like a tank. ( Which is a good thing... read the last part of my review.)..." Read more
"...review, but i'm keeping in mind the cost of the unit which is a really good value...." Read more
Customers are mixed about the quality of the space heater. Some mention it's very good quality, well constructed, and reliable, while others say that they are disappointed in the quality control and service to resolve the problem. They also mention that the box was not made properly for the transport of the product and that it was bad out of the box.
"...surprised when the heater arrived and I saw the quality of the overall construction. I was afraid with a cheap price I would receive a cheap heater...." Read more
"...It was just cheaply built or assembled. You get what you pay for." Read more
"...The box was in great condition but once I removed the heater it looks like it was damaged at the factory...." Read more
"...The unit is fairly quite and works well. Installed in a 2400 sqft insulated shop and can easily maintain 60F." Read more
Customers are mixed about the noise of the space heater. Some mention that it seems pretty quiet and kicks out the heat, while others say that it creates an unbelievable amount of vibration and noise. Some customers also mention that the fan is out of balance, and the motors squeak and squelch.
"...The unit was fitted initially and vibrated horribly due to a bent fan blade damaged in transit...." Read more
"...This one is quiet, for this type but like all they are a little noisy. Seems sturdy and well made. Manual is sufficient. So why only 3 stars?..." Read more
"...when I went to use it though my second season I noticed it was making a strange sound so I had opened the service book that came with it and learned..." Read more
"...Seems pretty quiet and kicks out the heat. So far, so good!" Read more
Customers are dissatisfied with the damage of the space heater. They mention that the packaging is insufficient, the heater was bent and dented, and the front left edge was smashed. The blower fan is bent and vibrates badly. The box was split open and there were no instructions.
"...The unit was fitted initially and vibrated horribly due to a bent fan blade damaged in transit...." Read more
"...The heater was damaged a bit, cosmetic mostly...." Read more
"...The front left edge was smashed in about an inch which pushed the whole side panel to the rear bending the screws and rear flange...." Read more
"...have been a little more robust as the box was damaged, and the heater had a few dents here and there. Otherwise well worth the investment." Read more
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Keep in mind you will need to pay for a vent whether it is horizontal or vertical. Allow $300 approx for this. You may also need professionally installation as this unit requires connection to a propane tank (recommend at least 120 gal) and a regulator cost. With tank lease, regulator, 2 men to install, gas line, proper gas fittings all up $950.
So the whole investment approx $2k. You could save by having the unit fitted in place with help, but you best be sure of the codes ie distance from walls, roof, floor etc etc because if this baby ignites your garage and burns to the ground and it wasn’t fitted to code and proves it was the cause - then - need I say more.
The unit was fitted initially and vibrated horribly due to a bent fan blade damaged in transit. Picked up the phone and the supplier had a replacement sent in 3 days. Unfortunately, they sent the wrong one. However, 2 days later via FedEx the right one was sent. Fitted and works like a new one should. Some say it’s noisy but I can’t say it is. I can say it belts out some heat and so far economically. I will up date this when I’ve been through a cold season.
Dec 2022 Update: fitted a nest thermostat and have this running at 56F whilst outside sun 30’s. I use around a gallon a day so out of a 120 gallon tank this thing keeps my shop cost for around 2-3 months. Around $300 a tank refill at current prices this beast is both economic and simply keeps me toasty and in my shop a hell of a lot. I’m a happy chappy!
I needed a propane conversion kit, it was not in the box, I think it fell out perhaps because the box showed up pretty beat up. The heater was damaged a bit, cosmetic mostly. But I did call help desk at Mr. Heater and they were very helpful and sent a propane conversion kit within the week. Got it installed without a problem.
Would have given 5 stars if the packaging had been better. Mr heater could design better packaging. Hope they do.
You won't be disappointed.
The only issue I had was with the shipper and not the product or with Northern Tool. I hate pointing fingers but the shipper had beat my heater up to the point where it looked like it had been delivered by airplane and dropped from about a thousand feet! It is a good thing the heater is constructed as well as it is because otherwise it would have been useless! It is a real testimony of how well the unit is constructed because I was able to make repairs and straighten all of the damage. Then after a close inspection of the vital components we fired it up. So far I highly recommend this product and the Mr. Heater brand.
The box was in great condition but once I removed the heater it looks like it was damaged at the factory. The front left edge was smashed in about an inch which pushed the whole side panel to the rear bending the screws and rear flange. Everything inside was untouched so I installed the heater and was able to straighten the side back where it should have been.
Just wanted to update my review, after 2 winters running this heater I have had no issues, when I went to use it though my second season I noticed it was making a strange sound so I had opened the service book that came with it and learned how to do the regular maintenance cleaning etc, once I cleaned the unit the noise went away, I have read all the other reviews and I’m not sure why everyone else is having issues. For me I would recommend this heater I have finally also gotten the chance to insulate my shop doors which has helped so much now I will turn the thermostat to 70 degrees and it’ll the heater will run for maybe 30 min and shit off for probably almost 5 hours if not longer, again this is just my experience with this unit I am very pleased.