Mr. Heater F299720 20,000 BTU Blue Flame Vent Free Propane Heater for Indoor Use
When the chill sets in, the Mr. Heater Blue Flame 20,000 BTU Heater has your back—delivering steady, even warmth that feels just right. Thanks to its blue flame burner technology, it's like having a cozy campfire indoors, minus the smoke and the need for marshmallows.
Setting it up? Piece of cake. You can hang it on the wall or pop it on the floor with the legs that come included. And with the battery-powered electronic ignition, getting it started is as easy as pressing a button (no matches required).
Safety isn't an afterthought here. The heater's got an Oxygen Depletion Sensor (ODS) that'll shut things down if the air gets too thin—because breathing is kind of important. Just remember, it's a no-go for bathrooms, bedrooms, or RVs (sorry, road trippers).
Whether it's a drafty garage, a sunroom that's seen better days, or any space that's stubbornly cold, this heater's up for the challenge. Heads up though: our friends in Canada and California might need to sit this one out due to local rules.
General specs
- Brand: Mr. Heater
- Model: F299720
- Seller: Retailer
- ID: B01DPZ5B3M
- Fuel Type: Liquid Propane
- Room Type: Living Room, Bedroom
- Burner Type: Radiant
- Form Factor: Cabinet
- Mounting Type: Wall Mount
- Special Feature: Low-Oxygen Safety Shutoff
- Heating Coverage: 500 sq ft
- Recommended Uses: Home
- Product Dimensions: 20.25"D x 9.25"W x 25.25"H
- Indoor/Outdoor Usage: Indoor
- First listed by seller: March 24, 2025
If you are interested in more details, you can find full information on the seller's page.
Shipping options
United States
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Mr. Heater F299720 Multicolor
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| Brand | Mr. Heater | ProCom | Mr. Heater | ProCom | Mr. Heater | Mr. Heater |
| Model | F299720 | ML300TBA-B | F299731 | ML250TPA-B | F215100 MH4B | F232000 |
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| Price | €244.94 | €218.77 | €182.03 | €177.48 | €61.25 | €78.74 |
| Seller | Retailer | Retailer | Retailer | Retailer | Retailer | Retailer |
| Update | May 13, 2026 | Mar 21, 2026 | May 15, 2026 | Mar 21, 2026 | Mar 21, 2026 | May 8, 2026 |
| Fuel Type | Liquid Propane | Propane | Natural Gas | Liquid Propane | Propane | |
| Room Type | Living Room, Bedroom | Office, Living Room, Bedroom | Bedroom | Living Room | ||
| Burner Type | Radiant | Radiant | Radiant | Radiant | ||
| Form Factor | Cabinet | wall_mounted | Pedestal | Pedestal | ||
| Mounting Type | Wall Mount | Floor Mount | Wall Mount | Floor Mount | ||
| Special Feature | Low-Oxygen Safety Shutoff | Adjustable Temperature | Low oxygen safety shut-off system | Low-oxygen safety shut-off system | ||
| Heating Coverage | 500 sq ft | 1400 sq ft | 1000 sq ft | 225 sq ft | ||
| Product Dimensions | 20.25"D x 9.25"W x 25.25"H | 8"D x 29"W x 28"H | 30"D x 13"W x 28"H | 7.7"D x 13.4"W x 15"H | ||
| Indoor/Outdoor Usage | Indoor | Indoor | Indoor | |||
| Item Weight | 29.3 pounds | 26.8 pounds | 9 pounds | |||
Mr. Heater F299720 Multicolor
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