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Mr. Heater Big Buddy Portable Indoor Propane Heater
Item No. 34073
Mr. Heater Big Buddy Portable Indoor Propane Heater is rated 4.3 out of 5 by 23.
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Mr. Heater Big Buddy Portable Indoor Propane Heater
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Mr. Heater Big Buddy Portable Indoor Propane Heater

Mr. Heater Big Buddy Portable Indoor Propane Heater is rated 4.3 out of 5 by 23.
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Item No. 34073
$114.97 $169.99
Save $55.02 ( 32% Off )
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Perfect for staying warm indoors, the Mr. Heater Big Buddy Portable Indoor Propane Heater combines safety with high-performing and adjustable warmth. The single control start knob lets you light the unit with a simple push and rotation, while the built-in Piezo sparking mechanism takes care of the rest. Additionally, the knob lets you switch between the 3 output settings: 4000 BTU/hour (low), 9000 (medium), or 18000 (high). This adjustable 4,000 - 18,000 BTU/hr output offers up to a 450 sq. ft. area of heated coverage, making the Big Buddy perfect for heating up enclosed spaces like a cabin.

Ensuring years of safe and comfortable indoor heating, the Big Buddy features an Oxygen Depletion Sensor (ODS) and accidental tip-over safety shut-off. For operating power, the unit connects to two 1 lb. cylinders with the 2 swivel regulators (1 on the left, and the other on the right side of the unit), or to a 20-lb. cylinder with optional hose and filter (not included)*. Furthermore, a Quick Connect fitting on the left side of the unit can connect to a remote gas supply with a single hose and filter (not included)**. Note from manufacturer: Propane tanks larger than 1 lb. must be kept outdoors.

*Hose + Filter Combos for Connecting to Larger Cylinder
• Hose F273701 + Fuel Filter F273699
• Hose F273702 + Fuel Filter F273699
• Hose F298802 + Fuel Filter F273699
• Hose F273704 (fuel filter not required)
• PROPANE TANKS LARGER THAN 1 LB. MUST BE KEPT OUTDOORS

**Single Hose & Filters for Connecting to Remote Gas Supply
• F271802: connects to Quick Connect fitting at heater, and to 3/8" female flare connection on a regulated, 11" water column propane source (fuel filter not required)
• F271803 connects to Quick Connect fitting at heater and to bulk tank up to 40 lbs. (no fuel filter required)
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  • 3 BTU settings: 4000, 9000, & 18,000 BTU/Hour
  • Up to 450 sq. ft. area of heated coverage
  • Powered by two 1-lb. propane cylinders
  • Can use remote gas source & tanks up to 40 lbs.
  • Oxygen Depletion Sensor & tip-over safety shut-off
BTU 18,000
Heater Type Propane
Unit Weight 17.00 lb
Brand Mr. Heater
MFG Part No. F274805
Rated 5 out of 5 by from Toasty Warm with the Big Buddy We had to travel to Ohio this winter. The temperatures reached 7 degrees, yet we were toasty warm with the Big Buddy Heater. It worked like a charm. We had it hooked up with the adapters to a regular size tank and didn't have to deal with frequent changes of propane bottles. We especially liked the 'fan' feature which kept our motor home warm even during an ice storm. The safety features are great and give you great peace of mind. Most of all... THEY WORK. We tried to move it slightly to adjust it... and the unit turned off immediately. Our family members in Ohio are going to purchase one for their garage. We highly recommend this unit.
Date published: 2008-03-05
Rated 5 out of 5 by from Excellent extreme cold RV undercarriage heater! I use this to heat the entire underside of my 35' 5th wheel when temps drop below freezing. I am a full time RV'r living in Montana where winter temps drop to NEG 40 at times. My RV is skirted entirely during winter. I place the heater below the king pin and feed it with a 40# propane cylinder. I place a small electric fan behind and above the heater to push the hot air under the entire RV bottom. The 40# can will last 10 days when heater on low. Another plus is it keeps things dry underneath and stops condensation from occurring. This heater keeps everything toasty warm underneath and the entire interior comfortable with less need for furnace. It has cut my winter heating propane cost dramatically!
Date published: 2015-08-02
Rated 5 out of 5 by from works great in class A We have two big buddies set up while fixing our suburban 42,000 btu furnace. I actually like the big buddies BETTER because there is no noise, they are very efficient, and use radiant heat. The hose hook- ups work great (must be the specific hose--don't buy the wrong ones twice like we did). You can go on just the little bottles, but be sure to buy a mr heater propane adapter to use your big bottles to fill your little bottles. Enjoy!!!
Date published: 2007-12-14
Rated 4 out of 5 by from Great little heater Purchased this heater to supplement main heater for faster warm up in winter months. Unit works great and have also used it as a stand alone heater. Would of been 5 stars but the disposable cans don't last very long. We have been using a 20 lb bottle (get the filter and power adapter too while purchasing the hose) and it alone has kept our 36' fifth wheel warm all night with outside temps in the teens. As with any propane appliance make sure the RV Co2 and propane detectors are functioning properly.
Date published: 2013-01-19
Rated 3 out of 5 by from okay i really am happy with the heater but all literature stated 120hours from one 20 lb tank on low setting. to date I have used 3 tanks and on the low setting the heater burns for 68 hours. rather disappointing, don't you think?
Date published: 2016-01-24
Rated 5 out of 5 by from Need portable heat - this is the answer We dry camp in the Smoky Mountains in our Coleman popup in fall and early spring and you always need heat. With no utilities in their camp grounds this was the answer for us. Lots of heat when needed and can also just knock off the chill. Use the bulk propane tank as it will go through the small bottles quickly on high. I like the battery powered fan as well. It also has an optional AC adapter for the fan. Bottom line, lots of heat, low cost and great for emergency heat anywhere, anytime.
Date published: 2007-02-10
Rated 4 out of 5 by from Throws some good heat. Bought one last year and used in the fall. Can buy alot cheaper at Tractor Supply or even cheaper online from Northern Tool.
Date published: 2016-10-02
Rated 5 out of 5 by from Works Great I have used this in my pop-up camper when camping at or below freezing. Had a propane company modify one of the Mr Heater hoses so i could connect it to my stove quick connect inside the camper. I have only used it above low a couple of times, usually when coming back to a camper aroundfreezing to warm it up. I would advise getting the adapter for the fan because it eats the batteries if you use it. I have found it helps the air flow. It also doubles as my emergency home heater if the power goes out for an extended period of time when very very cold. I have a Carbon Monoxide detector in both home and camper and the catalytic heat has never set it off. It was well worth the money I paid and was a cheaper choice than installing a furnace for those few times I need a heater in the camper and the heat strip in the AC unit is unable to do the job.
Date published: 2011-01-02
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Can I buy a replacement control knob?

Asked by: Anonymous
Replacement parts can be ordered directly from Mr.Heater's <a href=http://www.mrheater.com/parts-and-manuals/>Interactive Parts System</a>.
Answered by: cw_staff
Date published: 2019-03-08

Is this Model #F274825?

Asked by: Anonymous
This heater is model#F274800. F274825 was the CA model that was discontinued when the Big Buddy Heater was updated to be California approved instead of having a separate CA model. Now, this heater is only restricted from sales in Massachusetts and Canada. The Canada and MA approved unit, F274865, is listed as <a href=https://www.campingworld.com/mr-heater-big-buddy-heater-canada-and-massachusetts-approved>#66756</a>.
Answered by: cw_staff
Date published: 2019-03-08

CAN THE FAN BE HOOKED TO A 12V DC BATTERY?

Asked by: Anonymous
This uses optional A/C Adapter Or 4 D-Cell Batteries To Power Blower Fan.
Answered by: cw_staff
Date published: 2019-03-08

hi

do you have the carry bag as well and how much ?
Asked by: kaffi
Yes, we have it listed as <a href=https://www.campingworld.com/big-buddy-heater-carry-bag>item# 75146</a>.
Answered by: cw_staff
Date published: 2019-03-08

vent

To be on the safe side, ---- putting this heater in an 8' x 12' travel trailer, how big a vent should I run from outside to the back of this heater? 2" - 3" ? What do I need to hook this heater to my existing 1/2" black pipe for LP ?.
Asked by: arkieguide
The manual states the required minimum vent area to be 18 square inches (ex. 4-1/4" x 4-1/4" opening). Hose <a href=https://www.campingworld.com/big-buddy-heater-12-rv-hose-assembly>#34464</a> can utilize the quick connect on the heater to a pre-existing regulated (11" w.c.) LP source. Hose #24032 or #24031 can be used in conjunction with the <a href=https://www.campingworld.com/mr-heater-universal-fuel-filter>fuel filter</a> per hose, when direct connecting to a refillable tank. Or Mr.Heater quick connect hose with regulator, #F271803, can be used as well.
Answered by: cw_staff
Date published: 2019-03-08

Can this heater be fitted with a quick connect to work with RV propane tanks?

Asked by: Anonymous
It can, yes, see item 67312.
Answered by: cw_staff
Date published: 2019-12-19
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