Search  for anything...
Flame King

Flame King YSN-CHS20 20,000 BTU Propane Space Radiant Portable Heater Indoor* & Outdoor Great for Camping, Garage, Ice Fishing, Patio

    • Based on 106 reviews
Condition: New
Checking for product changes
$136.48 Why this price?

Buy Now, Pay Later

As low as $22.75 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product
This item's return window has been extended for the holiday season: Returnable until Jan 31, 2025

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: 12 left in stock
Fulfilled by Amazon
Arrives Saturday, Jan 4
Order within 7 hours and 57 minutes
Available payment plans shown during checkout

Color: 20K BTU Heater


Style: Cylinder Tank


Features

  • 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 a single 1 lb propane cylinder (not included) at a 10,000 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.
  • 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 1 lb. 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

Brand: Flame King


Special Feature: Thermostatic Heater, Portable, Low-Oxygen Safety Shutoff, Adjustable Temperature, Built-in Safety Fuel Shutoff, Built-in Fan, Built-in Auto ignition, Tip-Over Protection See more


Color: 20K BTU Heater


Form Factor: Pedestal


Indoor/Outdoor Usage: Indoor


Model Number: YSN-CHS10


UPC: 850015730511


Brand Name: Flame King


Heating Coverage: 500 square feet


Heating Element: Radiant


Heat Output: 20000 British Thermal Units


Fuel Type: Propane


Amperage: 10000 Milliamps


Voltage: 1.5 Volts


Heating Method: Radiant


Recommended Uses For Product: Backpacking, Garage, Outdoor, Ice Fishing, Patio, Camping


Mounting Type: Floor Mount


Room Type: Garage, Patio


Additional Features: Thermostatic Heater, Portable, Low-Oxygen Safety Shutoff, Adjustable Temperature, Built-in Safety Fuel Shutoff, Built-in Fan, Built-in Auto ignition, Tip-Over Protection


Form Factor: Pedestal


Indoor Outdoor Usage: Indoor


Power Source: Propane


Item Weight: 17.4 Pounds


Item Dimensions D x W x H: 12"D x 17.5"W x 18"H


Color: 20K BTU Heater


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Jan 4

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Works as advertised!!!
Lights easily by following instructions. The thermostat function is not quite an instant on or off. It seems to work better with each session of use but the fluttering is a bit disconcerting at 1st. So far I've only used it for a light demand on the enclosed porch to bring it up to 68 from high 40's & low 50's. Heat output is great, I set it to high just to see how quick it would heat up a 800cf porch from 48 to 68. Took maybe 10 minutes then I backed it down to 50% and it cycled on and off as advertised. Very quiet compared to the tower style propane heaters without a thermostat. The fan has marginal value but I wouldn't base my purchase on how that worked. The quick disconnect for a 20-30lb remote tank makes life easy also as opposed to changing 1lb tanks. Recommended side and front clearance is accurate for safety. This will definitely make morning coffee on the porch as the sun rises more pleasant in the winter. Worth the money! ... show more
Reviewed in the United States on October 6, 2022 by edward j gallagher
    • Not reliable
As stated above not already has quit working after using five times turn to pilot comes on does not go to full flame release pilot goes out so what are you going to do about it send me a return label. I am putting together another order from today but will not do so until I get a response back. Still waiting to hear from you when placing order response is immediate so a problem should be addressed the same way ... show more
Reviewed in the United States on February 28, 2024 by Amazon Customer
    • Great heater period!
This is the best value heater around. Worth every penny. The thermostat control works perfect in a deerstand. Keeps it comfortable all day long with little effort.
Reviewed in the United States on November 4, 2023 by Clyde
    • Needs improvements
I really like this heater, being 20K BTU it comes in 2K more then Mr. Heater Big Buddy I really like the thermocoupler thermostat. I have modified mine by adding 18 inches of 6 awg copper wire and adding a clip for it so I can have it a little above the handle makes temperature control better. It's nice being able to have the unit come off and on instead of just on as for me as 4K BUT is not enough though out the night, but 9K gets to hot after a few hours. Some things that would be better, if the solenoid for the burner flow was fast acting as it is now, it closes and opens slowly causing prolonged sputtering. And change the thermocoupler +- 5 degrees instead of 2 degrees so it dose not cycle as fast. I have also been told by those under 40 that it makes a very annoying high pitch sound when running. ... show more
Reviewed in the United States on February 3, 2022 by Frank B.
    • Not for indoor use.
I bought this instead of the Big Buddy heater because this has a built in thermostat. Unfortunately, when I received the heater and read the instructions it stated this is for outdoor use only. Had I know that prior to purchase, I would have opted for the Mr. Heater Big Buddy instead.
Reviewed in the United States on October 8, 2021 by Big Red
    • Heats very well!!
It was easy to put the propane in and assemble. It will keep an average size room warm and stay lit for about 4 hours.
Reviewed in the United States on February 1, 2024 by Morgan
    • Terrible Quality Control!
Review Image by Rich Lee Rich Lee
Very disappointed in Amazon and Flame king with this purchase! I bought the heater and upon receiving it one of the feet on the bottom was broke and after installing the propane tank I discovered it was massively leaking. After removing the rear panel I found the line running from the regulator to the control valve broke. Not loose. Not bent. Straight broke. After removing the line you can tell where the assembler from the factory forced the line into the fitting at the regulator to get it to line up therefore causing the line to bind up and break once tightened down. This could have been a very bad outcome had I lit this heater! Amazon has offered to refund the price once I return it yet a replacement heater isn't an option and me purchasing it again would have a mid to late February shipping date. Completely unacceptable all the way around for the money paid for it! ... show more
Reviewed in the United States on November 9, 2021 by Rich Lee Rich Lee
    • Well built, good heat output, bad design - thermostat noisy
Review Image by Jim C. Jim C.
The media could not be loaded. Overall this seems to be a solid product - it feels well built and has great heat output. I will probably be returning it though. First, that sputtering noise people mention in some reviews is no joke. I like the thermostat in principle rather than having set output levels, but when the unit is transitioning from on to off or vice versa it’s pretty noisy, it’s like little explosions, as you can hear from the video. Second, on high some flames escape from the top of the unit, which worries me from a safety viewpoint. Also the fan doesn’t seem to do much - most of the heat still goes up (easy to see from exhaust shadows on a sunny day. That’s not necessarily bad but a lot of heat goes with it - it really needs something absorbing the heat from the exhaust before it leaves the tent. Waiting for Big Buddy to do a comparison. Edit: after getting a Big Buddy with fan I lowered star rating for this. They made a poor design choice. This heater is basically fully on, noisy, or off. The Big Buddy has two panels, they are both on, or one off one on, or only one half on. The fan also seems to work better on the Big Buddy, looking at the shadows of the heated air the Big Buddy fan pushes the heated air column more (still not much). This is probably because the fan vents on this heater are vertical, more esthetically pleasing but less functional than horizontal vents. Also the Big Buddy canister attachments swivel, making it easier to install the canisters. On this unit the canisters have to put in perfectly vertically. This unit has a better battery compartment though, it’s much easier to install the batteries here. If they put out a version of this with high medium low settings that turned on 3, 2, or 1 panel and made the fan vents horizontal it would be a much better competitor to the Big Buddy. ... show more
Reviewed in the United States on September 21, 2022 by Jim C. Jim C.

Can't find a product?

Find it on Amazon first, then paste the link below.