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: Amazon
- 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: 3/24/25
If you are interested in more details, you can find full information on the seller's page.
Amazon live offers
?
Top live offer is the offer currently shown first for this Amazon listing. It may differ from the lowest available price.
FBA means the order is fulfilled by Amazon, even when the seller is a third-party merchant.
Shippable means the offer is listed as available for delivery on Amazon.
New, Used and Refurbished describe the item condition shown for that Amazon offer.
View on Amazon
Price History for seller Amazon
Shipping options
United States
Similar products comparison
| This item | Recommendations | |||||
|---|---|---|---|---|---|---|
Mr. Heater F299720 Multicolor
|
Mr. Heater F299731 White
|
ProCom ML250TPA-B 25000 BTU heating capacity
|
Mr. Heater F215100 MH4B
|
Mr. Heater F232000 Red
|
Mr. Heater F232050
|
|
| Brand | Mr. Heater | Mr. Heater | ProCom | Mr. Heater | Mr. Heater | Mr. Heater |
| Model | F299720 | F299731 | ML250TPA-B | F215100 MH4B | F232000 | F232050 |
| Color |
|
|
|
|
||
| Rating |
|
|
|
|
|
|
| Price | $279.95 | $268.59 | $195.49 | $69.99 | $89.97 | $89.00 |
| Seller | Amazon | Amazon | Amazon | Amazon | Amazon | Amazon |
| Update | May 13, 2026 | May 15, 2026 | Mar 21, 2026 | Mar 21, 2026 | May 8, 2026 | May 17, 2026 |
| Fuel Type | Liquid Propane | Natural Gas | Liquid Propane | Propane | Propane | |
| Room Type | Living Room, Bedroom | Bedroom | Living Room | |||
| Burner Type | Radiant | Radiant | Radiant | Radiant | ||
| Form Factor | Cabinet | Pedestal | Pedestal | Portable Heater | ||
| Mounting Type | Wall Mount | Wall Mount | Floor Mount | Floor Mount | ||
| Special Feature | Low-Oxygen Safety Shutoff | Low oxygen safety shut-off system | Low-oxygen safety shut-off system | Portable, Bladeless, Tip-Over Protection | ||
| Heating Coverage | 500 sq ft | 1000 sq ft | 225 sq ft | 225 sq ft | ||
| Product Dimensions | 20.25"D x 9.25"W x 25.25"H | 30"D x 13"W x 28"H | 7.7"D x 13.4"W x 15"H | 13.4"D x 15"W x 8.3"H | ||
| Indoor/Outdoor Usage | Indoor | Indoor | Indoor | |||
| Item Weight | 26.8 pounds | 9 pounds | 9.5 pounds | |||
| Warranty Description | 1 year limited parts. | 1-Year Limited Warranty | 1-Year Limited warranty | |||
| Recommended Uses For Product | Home | Office, Garage, Outdoor, Desk, Indoor | Outdoor Use | |||
Mr. Heater F299720 Multicolor
Reviews
There are no text reviews yet. If you have experience using this product, please leave a review. It will help other people decide whether this product is right for them.