

Hero image 0 of Flame King 20,000 BTU Propane Space Radiant Portable Heater for Camping, Garage, Ice Fishing, Patio, 0 of 17
Flame King 20,000 BTU Propane Space Radiant Portable Heater for Camping, Garage, Ice Fishing, Patio
Key item features
- Safety Features: Equipped with a built-in safety fuel shutoff, Oxygen Depletion System (ODS), fire detection system, safety tilt shutoff, and an exterior grate guard for user protection.
- Comfort Controls: Features auto-ignition and a thermostat dial for precise heat management, alongside a molded handle for easy portability.
- Efficient Heating: Utilizes advanced thermostatic technology, recognized for its efficiency in industrial gas heating, making it a versatile and reliable choice.
- Extended Operation: Operates for up to 2 hours on two 1LB propane cylinders at 20,000 BTU output, with options for continuous use via standard BBQ propane tanks.
- Indoor Suitability: Safe for indoor use in small recreational enclosures with proper ventilation, such as cabins, tents, and vans, and for emergency indoor heating with a 1LB propane cylinder.
Generated by AI
Specs
- Fuel typePropane
- Space heater typeInfrared Heaters
- Power typeGas
- Maximum room size400 sq ft
- Rec. useCamping, Outdoor
- FeaturesPortable
Current price is USD$104.64
Price when purchased online
Out of stock
How do you want your item?
Out of stock
About this item
Product details
Stay warm with the Flame King 20,000 BTU Propane Heater, perfect for outdoor activities. Whether you're camping, in a garage, ice fishing, or on a patio, this heater provides reliable heat. It can run up to 1 hour on a single propane bottle or up to 2 hours with two 1LB propane bottles. Safety features include an Oxygen Depletion System and safety tilt shutoff to ensure peace of mind. Its advanced thermostatic technology offers efficient heating, letting you enjoy the great outdoors without the chill.
- SAFETY FEATURES: Built-in Safety Fuel Shutoff, Oxygen Depletion System (ODS), Fire Detection System, Safety Tilt Shutoff, and Exterior Grate Guard to protect you and your family
- FULL COMFORT: Built-in Auto-ignition and Thermostat Dial for added heat control. Molded handle for easier transporting.
- ADVANCED THERMOSTATIC TECHNOLOGY: The Thermostatic technology used in this heater is the most efficient in the industrial gas heating market. The versatility and reliability of the Flame King Heater have made it the heater of choice for many.
- LONG LASTING: Lasts up to 2 hours on two 1LB propane cylinders (not included) at a 20,000 BTU output.
- OXYGEN DEPLETION SYSTEM (ODS) is a low-oxygen level sensor that shuts off the gas supply to avoid the accumulation of toxic carbon monoxide in the environment.
- FOR EXTENDED USE: Connect to a standard BBQ propane tank for continuous operation. For larger tanks (3–40 lbs), use a compatible hose Flame King Model FK-HTR-QC12FT.
- THIS HEATER IS SAFE - for indoor use in small recreational enclosures having means for providing combustion air and ventilation, such as enclosed porches, cabins, fishing huts, trailers, tent trailers, tents, truck caps, and vans. It may be used for emergency indoor heating when connected to a 1LB propane cylinder. This does not apply and is not allowed when being used in Canada & Massachusetts.
- CSA certified to guarantee safety and peace of mind
- ONE-YEAR WARRANTY: 1-Year Manufacturer's Defect Warranty
info:
We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here, and we have not verified it.
Specifications
Fuel type
Propane
Space heater type
Infrared Heaters
Power type
Gas
Maximum room size
400 sq ft
Warranty
Warranty information
90 Day
Warranty url
Warnings
Similar items you might like
Based on what customers bought
KFFKFF Portable Propane Heater, Adjustable 6000-18000 BTU with Three Temperature Settings & Safety Features, Efficient Heating for Spaces up to 450 Sq. Ft, Ideal for Camping, Garage, Patio $99.99
$9999current price $99.99KFFKFF Portable Propane Heater, Adjustable 6000-18000 BTU with Three Temperature Settings & Safety Features, Efficient Heating for Spaces up to 450 Sq. Ft, Ideal for Camping, Garage, Patio
184.5 out of 5 Stars. 18 reviewsPortable Buddy Heater MH9BX 4,000-9,000 BTU Indoor-Safe Propane Radiant Heater For Campers, Workshops, Job Sites, Patios & More - Red, Black $107.00
$10700current price $107.00Portable Buddy Heater MH9BX 4,000-9,000 BTU Indoor-Safe Propane Radiant Heater For Campers, Workshops, Job Sites, Patios & More - Red, Black
Best seller Ozark Trail 10,000 BTU Portable Propane Camping Heater $82.00
Best seller
2 optionsAvailable in additional 2 options$8200current price $82.00Ozark Trail 10,000 BTU Portable Propane Camping Heater
19914.1 out of 5 Stars. 1991 reviewsHeat Hog 18000 Btu 450 Sq-Ft. Area Portable Propane Radiant Space Heater $119.99
$11999current price $119.99Heat Hog 18000 Btu 450 Sq-Ft. Area Portable Propane Radiant Space Heater
1424.6 out of 5 Stars. 142 reviewsProCom Heating Liquid Propane Ventless Infrared Plaque Heater With Base Feet - 10,000 BTU, T-Stat Control - Model# ML100TPA-B $143.68 Was $159.99
6 optionsAvailable in additional 6 options$14368current price $143.68, Was $159.99$159.99ProCom Heating Liquid Propane Ventless Infrared Plaque Heater With Base Feet - 10,000 BTU, T-Stat Control - Model# ML100TPA-B
3774.3 out of 5 Stars. 377 reviewsComfort Gear 15,000-BTU Single Tank-Top Outdoor Portable Propane Heater $52.99
$5299current price $52.99Comfort Gear 15,000-BTU Single Tank-Top Outdoor Portable Propane Heater
15 out of 5 Stars. 1 reviewsKerosene Heater Portable Kerosene Stove Heater Indoor & Outdoor for Home, Garage, Basement, and Camping 8000 BTU 12.99*18.11in $84.80 Was $99.20
$8480current price $84.80, Was $99.20$99.20Kerosene Heater Portable Kerosene Stove Heater Indoor & Outdoor for Home, Garage, Basement, and Camping 8000 BTU 12.99*18.11in
THE BOSS 6000 BTU Propane Heater, Portable Outdoor Space Heater for Camping $109.99
2 optionsAvailable in additional 2 options$10999current price $109.99THE BOSS 6000 BTU Propane Heater, Portable Outdoor Space Heater for Camping
164.3 out of 5 Stars. 16 reviewsChicHomey Green Portable Kerosene Heater - 9000BTU,107ft² Heating,with Adjustable Height,Easy to Carry – for Outdoor & Indoor Use $84.56
$8456current price $84.56ChicHomey Green Portable Kerosene Heater - 9000BTU,107ft² Heating,with Adjustable Height,Easy to Carry – for Outdoor & Indoor Use
13 out of 5 Stars. 1 reviewsOpen Box Mr. Heater Portable Radiant Big Buddy Heater with Hose and Adapter - Thermal Shut-down System $92.70
$9270current price $92.70Open Box Mr. Heater Portable Radiant Big Buddy Heater with Hose and Adapter - Thermal Shut-down System
Clearance MUAXDA Portable Propane Tent Heater for Camping, Butane Heater for Camping, Patio, Hiking, Garage, Ice Fishing, Safe Heat for Winter, High Altitude Ignition Assist $19.99 Was $32.99
Clearance
$1999current price $19.99, Was $32.99$32.99MUAXDA Portable Propane Tent Heater for Camping, Butane Heater for Camping, Patio, Hiking, Garage, Ice Fishing, Safe Heat for Winter, High Altitude Ignition Assist
Comfort Gear 30,000-BTU Double Tank-Top Outdoor Portable Propane Heater $88.99
$8899current price $88.99Comfort Gear 30,000-BTU Double Tank-Top Outdoor Portable Propane Heater
25 out of 5 Stars. 2 reviewsBaellsa 9000 BTU Portable Kerosene Heater – Non-Electric, for Indoor Camping Hunting & Cooking $73.97 Was $84.97
$7397current price $73.97, Was $84.97$84.97Baellsa 9000 BTU Portable Kerosene Heater – Non-Electric, for Indoor Camping Hunting & Cooking
Mr. Heater Propane Infrared 15000 BTU Black Heater-Mfg# F242300 $83.29
$8329current price $83.29Mr. Heater Propane Infrared 15000 BTU Black Heater-Mfg# F242300
Clearance 15000 BTU Propane Tank-Top Heater PCTT15 High-Efficiency Burner for Tools & Home Improvement Projects $32.47 Was $37.47
$3247current price $32.47, Was $37.47$37.4715000 BTU Propane Tank-Top Heater PCTT15 High-Efficiency Burner for Tools & Home Improvement Projects
Comfort Gear 360 Degree Indoor/Outdoor Portable Propane Space Heater $83.97
$8397current price $83.97Comfort Gear 360 Degree Indoor/Outdoor Portable Propane Space Heater
154 out of 5 Stars. 15 reviewsKerosene Heater,Kerosene Heaters for Indoor Use,2600W Heating power,15㎡ Heating range,Portable Heater for Indoor and Outdoor, Camping and Fishing(Black,4.5l) $109.99
$10999current price $109.99Kerosene Heater,Kerosene Heaters for Indoor Use,2600W Heating power,15㎡ Heating range,Portable Heater for Indoor and Outdoor, Camping and Fishing(Black,4.5l)
154.4 out of 5 Stars. 15 reviewsPortable Propane Heater for Camping Tent, Outdoor Small Space Patio Garage Heater, Self Ignition Radiant Cordless Heaters Foldable Gas Tank Holder $31.99
$3199current price $31.99Portable Propane Heater for Camping Tent, Outdoor Small Space Patio Garage Heater, Self Ignition Radiant Cordless Heaters Foldable Gas Tank Holder
Clearance HBYJLZYG Ice Fishing & Camping Gas Heater, Portable Mini Heater for Tents, Sheds, and Outdoor Winter Activities, Compact Design with Protective Cover, Uses Propane Canister (Not Included) $23.29 Was $25.88
$2329current price $23.29, Was $25.88$25.88HBYJLZYG Ice Fishing & Camping Gas Heater, Portable Mini Heater for Tents, Sheds, and Outdoor Winter Activities, Compact Design with Protective Cover, Uses Propane Canister (Not Included)
Customer ratings & reviews
How item rating is calculated
Filtered and sorted results would be available on the new 'Customer ratings & reviews' page.
Sort by |
Showing 1-3 of 5 reviews
Feb 7, 2026
Danielle
5 out of 5 stars review
Verified Purchase
i love it!!!
it heats up my husband's shed within minutes!!!
Helpful?6KB6KMYG87B8926359926
Feb 21, 2026
Todd
3 out of 5 stars review
Verified Purchase
Powerful, but unfortunately, inconsistent heat.
While this heater does heat a room quite easily, when using the thermostat control, the temperature range in the room being heated varies quite greatly. Probably better than 30° between where it's in between cycles and when it's been heating on a cycle. If you're not too concerned about that, like for heating a shed or something, this is a great item to have.
Helpful?6KB6KMYG87B8926359926
Jan 22, 2026
LightingBug
2 out of 5 stars review
Verified Purchase
to noisy, flutters on low settings and has to muc
to noisy, flutters a lot, to many gas fumes.
Helpful?6KB6KMYG87B8926359926








