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Sold by: Lifestyle by Focus
Sold by: Lifestyle by Focus
(492513 ratings)
94% positive over last 12 months
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Mr. Heater Corporation Vent Free Flame Natural Gas Heater, 20k BTU, Blue

4.4 4.4 out of 5 stars 2,385 ratings

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Purchase options and add-ons

Brand Mr. Heater
Special Feature Noiseless
Color Blue
Product Dimensions 23.75"D x 11.25"W x 27"H
Mounting Type Floor Mount, Wall Mount
Power Source
Gas Powered
Heating Method
Convection
Item Weight
28.75 Pounds
Heat Output
10000 British Thermal Units

About this item

  • 20,000 BTU per hour for use with natural gas and heats up to 500 sq. Ft
  • Blue flame burner for even convection heat
  • Quiet integrated blower for gentle circulation of heated air
  • Thermostat for automatic temperature control with automatic low oxygen shut-off system (ODS)
  • Blower fan kit (f299200 sold separately) - available for 20k units and up only

Customer ratings by feature

Easy to install
4.3 4.3
Easy to use
4.2 4.2
Comfort
4.2 4.2
Value for money
4.2 4.2

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$24.25
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Mr. Heater Corporation Vent Free Flame Natural Gas Heater, 20k BTU, Blue
Mr. Heater Corporation Vent Free Flame Natural Gas Heater, 20k BTU, Blue
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Price$194.41$139.99-6% $130.99
List:$139.99
$209.99-28% $141.36
List:$194.99
-25% $162.10
Typical:$215.98
Delivery
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Get it as soon as Friday, Mar 29
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Customer Ratings
Easy to install
4.3
5.0
4.8
4.5
Easy to use
4.2
4.5
4.6
3.4
Value for money
4.2
4.8
4.3
3.9
Sold By
Lifestyle by Focus
Amazon.com
Amazon.com
Spreetail
Amazon.com
Amazon.com
power source
Gas Powered
Gas Powered
Gas Powered
Corded Electric
Gas Powered
Gas Powered
heating method
Convection
Gasoline
Infrared
radiant & infrared
Convection
fan & forced air, Convection
heating coverage
700
500 square feet
500 square feet
500 square feet
300 square feet
700 square feet
heat output
10000 btus
10000 btus
10000 btus
18000 btus
10000 btus
20000 btus
weight
28.75 pounds
0 pounds
0.01 ounces
19.81 pounds

From the manufacturer

Blue Flame Vent Free Heaters

Our Vent Free heaters need no external power, great for power outages and applications with no electricity. They can be mounted to the wall with the supplied bracket or on the floor with the supplied feet.

Most common uses are rooms that don’t warm well so you can adjust the temperature level in them without having to affect the rest of the home.

There are two types of vent free heaters, blue flame (or convection heat) and infrared (or radiant heat). The difference in these types of heat are how the warm.

The Blue Flame heater warms the air. It doesn’t radiate the heat like an infrared unit. It can be put in a narrow area because the heat rises and warms the area from the ceiling down. Blue Flame warms the air, infrared warms objects, which heat the air.

Note: Units cannot be converted from Propane to Natural Gas and vice versa. They are not designed to be a primary source of heat, as they are designed to work with a furnace.

Blue Flame Natural Gas Heaters

Mr. Heater #VF10KBLUENG Vent Free Heater

10,000 BTU units don’t have the ability to add a circulating fan and only have a low and high manual heat setting with no thermostat operation.

Mr. Heater #VF20KBLUENG Vent Free Heater

20 and 30,000 BTU units can have a fan added that can be set for automatic operation, off or on all the time. These units also have a thermostatic control so they can maintain a given temperature in a room without having to be turned on and off manually.

Mr. Heater #VF30KBLUENG Vent Free Heater

20 and 30,000 BTU units can have a fan added that can be set for automatic operation, off or on all the time. These units also have a thermostatic control so they can maintain a given temperature in a room without having to be turned on and off manually.

Mr. Heater Vent Free Blower Fan Kit

This unit can only be added to the 20 and 30,000 BTU heaters. The electrical cord that is connected to the fan assembly can then be plugged into a wall outlet and the three position rocker switch for the fan can be set for either off all the time, the middle position, On all the time, the top position, and the Automatic, bottom position, which allows the fan to turn on and off with the heat from the Vent Free unit as it operates.

This switch can be reached even when the heater is mounted to the wall.

Product information

Warranty & Support

Product Warranty: For warranty information about this product, please click here

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Mr. Heater Corporation Vent Free Flame Natural Gas Heater, 20k BTU, Blue


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Product Description

This Blue Flame 20,000 BTU Natural Gas Vent Free heater is the perfect supplemental heating solution even on the coldest days. This heater is conveniently equipped with a thermostat for superior control of the temperature in your space. Also, with a battery powered electronic ignition, starting it is a breeze - battery included. This unit can be permanently mounted to the wall or securely fastened to the floor with included mounting brackets and fasteners. A clean burning blue flame tube burner uses the natural convection of the burn to circulate warm comfortable air. With a factory standard Oxygen Depletion Sensor (ODS), rest assured this heater will provide you with years of comfortable and safe heat.

Customer reviews

4.4 out of 5 stars
4.4 out of 5
2,385 global ratings

Customers say

Customers like the ease of installation and performance of the space heater. For example, they mention it's easy to setup and maintain, and the controls are easy to use. That said, some complain about the pilot light not staying lit and the noise it makes. Opinions are mixed on quality.

AI-generated from the text of customer reviews

258 customers mention239 positive19 negative

Customers are satisfied with the warmth of the space heater. For example, they mention it heats well, it's a great heater, and it keeps their house toasty. Some say that the thermostat works great and it saves on gas. Overall, most are happy with the product's warmth.

"Very efficient! Easy to install and operate! It’s great heat for a room that has no heat or insulation (I have a sunroom) it’s perfect...." Read more

"Works well to heat a small space. It has a pilot light which is not ideal for my planned use...." Read more

"Heats my 2 bay garage perfectly" Read more

"liked all, used it in basement. good steady heat source. thermostat works great." Read more

208 customers mention179 positive29 negative

Customers like the performance of the space heater. They say it does a great job, is very efficient, and easy to set up. Some say the thermostat works even below 1. It warms things up quickly and is perfect for their needs.

"Very efficient! Easy to install and operate! It’s great heat for a room that has no heat or insulation (I have a sunroom) it’s perfect...." Read more

"Works great. Great value." Read more

"...I'm in awe these two heaters can keep up but they do, and quite well! They are comparatively economical to operate too...." Read more

"liked all, used it in basement. good steady heat source. thermostat works great." Read more

100 customers mention86 positive14 negative

Customers find the installation process of the space heater to be easy. They mention that it is easy to setup and operational, it starts up very easy, and that maintenance is quick and easy. Customers also say that the controls are easy to use and that it burns very little gas.

"Very efficient! Easy to install and operate! It’s great heat for a room that has no heat or insulation (I have a sunroom) it’s perfect...." Read more

"Very well made and easy setup. I contacted customer service because one part was missing and to ask about a noise it was making...." Read more

"...Don't forget teflon tape for the threaded pipe joints! Maintenance is quick & easy. Basically cleaning the pilot orfice of dust that may accumulate...." Read more

"...It was incredibly easy to install with the Mr. Heater hook up kit. I purchased the one with the blower and it was all essentially plug and play...." Read more

49 customers mention41 positive8 negative

Customers like the value of the space heater. They mention that it's great for the money, comparatively economical to operate, and one of the best heaters money can buy. They also say that it uses propane, which is way cheaper than electricity, and is pretty cheap to run.

"Works great. Great value." Read more

"...They are comparatively economical to operate too. Hopefully our new house will be finished before next winter...." Read more

"...Nope, totally quiet. For my money.... It is an incredible value...." Read more

"...It is a decent replacement for the cost...." Read more

49 customers mention17 positive32 negative

Customers are mixed about the quality of the space heater. Some mention it's well made, dependable, and excellent, while others say it'd not be ideal for their planned use and is extremely inferior. The install kit is completely worthless and the unit does not function reliably.

"...It has a pilot light which is not ideal for my planned use. I have propane tanks to provide fuel and the pilot wastes gas...." Read more

"Very well made and easy setup. I contacted customer service because one part was missing and to ask about a noise it was making...." Read more

"...This is a poor and unsafe design on this heater." Read more

"There is a serious design flaw in this unit, that could have been simply mitigated. The propane input is at the bottom facing down...." Read more

40 customers mention10 positive30 negative

Customers are dissatisfied with the noise produced by the space heater. They mention that it makes a lot of noise popping, banging, and ticking when heating up. The fan is a little noisy, and when it comes on it makes puffing sound. When you first light it, it makes very high pitched howl. The sound is very startling, and the heater screams when starting.

"...When you first light it, it makes a very high pitched howl...." Read more

"...The fan is a little noisy for me but in general it works well for what I'm doing with it." Read more

"...No noise, ( I expected some cracking sounds as the metal expanded and contracted) as it warmed and cooled. Nope, totally quiet...." Read more

"...Also this one makes a lot of noise ping ping ping wakes me up in the night makes me sad. I've read other posts that have the exact same issues." Read more

31 customers mention7 positive24 negative

Customers are dissatisfied with the lighting of the space heater. For example, they mention that the pilot light will not stay lit, it's hard to light, and it only stays lit for about one hour. Customers also say that the unit would have to be refilled with water due to the pilot lights going out.

"...Bought another last month and the pilot light will not stay lit. Another issue for me I am using the unit to heat a 10' x 20' greenhouse...." Read more

"...Getting the pilot light to light is a bit tricky but it does eventually go on...." Read more

"...We have called customer support 2 times already, the pilot light will not ignite...." Read more

"...standard size so was easy to get at the local hardware store… lights easy and doesn’t take long to notice it’s on.. I close all the doors and..." Read more

25 customers mention5 positive20 negative

Customers are dissatisfied with the flame of the space heater. They mention that it comes up, has a large burst of yellow flame, and sputters for 30 seconds before actually coming on. The heater stinks up the house and flashes fire out of the grill when it lights. It burns through a regular propane tank in about 24 hours on low. Customers also complain that the flame is open and wide open to the room.

"When temperature changes alstge flame comes up then settles down not sure if it is safe" Read more

"...or especially small children from putting their hand into the flame is very wide and I can actually reach my hand into the flame bar...." Read more

"...When I looked at it I saw what you see in the video; a tiny blue flame fluttering on the heating element, which should have been completely off...." Read more

"I like that it burns clean no carbon monoxide problem ." Read more

This is what you need to set up the heater EASY!!
4 Stars
This is what you need to set up the heater EASY!!
Great when you can figure out how to install it- we went to the home improvement store 5 times getting the wrong parts and a regulator that wouldn't put out enough pressure to make it actually light. So frustrating! Then we went to the propane store and got exactly what we needed and felt like idiots. Anyways Ive taken a picture of what you need!! The mr heater setup, regulator, hose and everything for this exact heater is sold as a package!!! picture of the packaging is attached.Anyways, we use this heater in our RV in Alaska in the snow and it heats up the place beautifully! No need for the extra blower system thing, we just set up fans around the RV.-it heats up so quickly-there is a glass and metal layer over the front so my dogs can't stick their tails in-you actually can't set the amount of heat it puts out. It puts out one amount - A lot. What you can adjust is the timer (1 through 5) and it will automatically turn itself on and off in intervals-pretty much completely silent. I sleep in the same room as it just fine.I only wish there was a lower setting than 1 ! I am sweating after its on setting one during the night. but would rather be sweating than frozen! A heater this big is likely overkill for an RV, maybe get the smaller size :-)
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Top reviews from other countries

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Jorge Gordillo
5.0 out of 5 stars Muy eficiente!
Reviewed in Mexico on September 16, 2021
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Consuelo Sánchez
1.0 out of 5 stars Necesito su ayuda
Reviewed in Mexico on January 17, 2021
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Consuelo Sánchez
1.0 out of 5 stars Necesito su ayuda
Reviewed in Mexico on January 17, 2021
Calidad, Aún no lo instalo hace tres semanas instalé mi Calenton pero tal parece que tiene una fuga que el plomero no puede arreglar y la he detectado precisamente en el botón rojo de encendido, el Plomero dice que este artículo no puede abrirse para revisarlo porque está sellado, mi pregunta es pueden hacer algo ustedes por mí, aún lo puedo regresar o cambiar? Agradezco de antemano su atención
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Cliente de Amazon
3.0 out of 5 stars Tiene una falla.
Reviewed in Mexico on January 14, 2021
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ALFREDO M.
3.0 out of 5 stars Requiere reparación.
Reviewed in Mexico on December 15, 2021
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Javier Migoya Janet
3.0 out of 5 stars Eficacia
Reviewed in Mexico on December 19, 2020
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