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Mr. Heater MHVFBF20LPT 20,000 BTU Blue Flame Vent Free Propane Heater For Cold Rooms, Additions, Sun Rooms Cabins & Garage - White

4.4 4.4 out of 5 stars 2,611 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
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Lowest price in 30 days
$139.99 with 13 percent savings
Typical price: $159.99
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Material Type: Propane
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Purchase options and add-ons

Brand Mr. Heater
Special Feature Low-Oxygen Safety Shutoff
Color Multicolor
Form Factor Cabinet
Indoor/Outdoor Usage Indoor
Power Source
Propane
Heating Method
Convection
Item Weight
24.75 Pounds
Heat Output
20000 British Thermal Units

About this item

  • POWERFUL PROPANE WALL HEATER: Provides up to 20,000 BTUs of heat, effectively warming rooms and cabins up to 700 sq. ft. & designed for reliable performance even at elevations up to 4,500 ft. for consistent warmth in cold conditions
  • EASY CONTROL & IGNITION: This blue flame heater features a thermostat for accurate temperature control and a hassle-free startup with its battery-powered electronic ignition (battery included) & consumes fuel at a rate of .926 lbs per hour
  • SAFE HEAT: One of the most important features of this propane indoor heater is the factory standard automatic low oxygen shut-off system (Oxygen Depletion Sensor-ODS) that ensures safe operation whenever in use
  • CONVECTION HEAT: This ventless propane heater features a blue flame burner that uses convection heating, which heats the air, not objects, and disperses that heated air through the area, warming the room from top down, similar to a fireplace
  • VERSATILE MOUNTING: Other wall heaters for indoor use are required to be fixed to a wall where ours is designed for mounted or free-standing use, with legs & mounting hardware included for simple installation to meet the needs of your space
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Competitively priced item

Amazon's Choice
4.4 out of 5 stars (10523)
$129.99

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From the manufacturer

Blue Flame Vent Free, home heater, hearth, propane, natural gas, get cozy on the couch
no electricity, no venting, indoor safe, low oxygen safety shut off, wall mounted, free standing

Blue Flame Vent Free, indoor safe, wall mounted, free standing, no electricity

Can be wall mounted or freestanding, feet and hardware are included

Blue Flame Vent Free, indoor safe, not vented, low oxygen safety shut off

Clean burning blue flame tube burner uses convection heating to warm the air

Blue Flame Vent Free,mr heater, wire guards

Wire guard protects against contact with burner

blue flame, convection, indoor, radiant, infrared, drafty, cozy, heat room, vent free
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Customer Reviews
4.3 out of 5 stars 504
4.4 out of 5 stars 465
4.4 out of 5 stars 2,611
4.5 out of 5 stars 753
4.4 out of 5 stars 3,099
4.5 out of 5 stars 4,275
Price $144.10 $181.98 $139.99 $162.99 $151.18 $189.99
BTU 10,000 10,000 18,000 20,000 30,000 30,000
Heating Area (Sq. Ft.) 300 300 700 700 1,000 1,000
Ignition Piezo Piezo Battery Igniter (1-AAA) Battery Igniter (1-AAA) Battery Igniter (1-AAA) Battery Igniter (1-AAA)
Inlet Gas Pressure (Max) 14 Inches of Water 14 Inches of Water 14 Inches of Water 14 Inches of Water 14 Inches of Water 14 Inches of Water
Inlet Gas Pressure (Min) 11 Inches of Water 7 Inches of Water 11 Inches of Water 7 Inches of Water 11 Inches of Water 7 Inches of Water
Thermostat X X ✓ ✓ ✓ ✓
Optional Blower Kit X X Sold Separately (F299201) Sold Separately (F299201) Sold Separately (F299201) Sold Separately (F299201)

Product information

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For warranty information about this product, please click here. [PDF ]

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Mr. Heater MHVFBF20LPT 20,000 BTU Blue Flame Vent Free Propane Heater For Cold Rooms, Additions, Sun Rooms Cabins & Garage - White

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Product guides and documents

User Manual (PDF)
User Guide (PDF)

Product Description

The Mr Heater Blue Flame 20000 BTU Heater with thermostat controlled temperature is the ultimate solution for reliable, supplemental heating for your indoor space, even during the coldest days. Designed to efficiently heat spaces up to 700 square feet, this propane heater uses blue flame burner technology to provide consistent convection heat that circulates warm air evenly throughout the room. Whether you’re trying to warm up your sunroom, cabin, or addition, this unit is perfect for keeping you cozy and comfortable. With the battery-powered electronic ignition, getting the heater started is as simple as pressing a button. Installation is easy and versatile, as this heater can either be mounted on the wall or placed on the floor using the included legs and mounting hardware. This flexibility makes it a great fit for a wide range of spaces and setups. For even greater comfort, an optional Blower Fan Kit (sold separately) is available for 20,000 BTU units and higher, helping to enhance the distribution of heat. For every Mr Heater propane heater safety is a top priority, so this design features an Oxygen Depletion Sensor (ODS) that automatically shuts off the unit if the oxygen levels in the room drop to unsafe levels, providing peace of mind during use. This CSA-certified heater is ideal for cold rooms, additions, and other areas, but is not recommended for use in bathrooms, bedrooms, or recreational vehicles. Additionally, it should not be operated at altitudes over 4,500 feet, as this could cause the ODS to shut down the unit. Whether you need supplemental heat or a primary heat source for smaller spaces, the Mr. Heater Propane Heater offers a reliable, safe, and efficient solution for any indoor area. Note: This product is restricted in Canada and California.

Top Brand: Mr. Heater

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Price$154.48$144.10$183.35$176.13-7% $181.98
List: $195.69		$269.99
Delivery
Get it as soon as Thursday, Mar 20
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Get it Mar 19 - 21
Customer Ratings
4.44.4 out of 5 stars2,611
4.34.3 out of 5 stars504
4.54.5 out of 5 stars384
4.44.4 out of 5 stars1,300
4.44.4 out of 5 stars465
4.74.7 out of 5 stars11
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Customer reviews

4.4 out of 5 stars
2,611 global ratings

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Customers say

Customers find the space heater effective and efficient. It heats up quickly and has a temperature gauge. They find it easy to set up and use, with simple controls and quick maintenance. Many customers appreciate its value for money. However, some have concerns about the flame size and incomplete burning. There are mixed opinions on the quality and noise level.

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Works greatHeat sourceEase of useValue for moneyQualityNoise levelFlame sizeParts included
349 customers mention "Works great"301 positive48 negative

Customers find the heater effective and efficient. It works well especially with ceiling fans set low. The thermostat saves on fuel and the battery-operated igniter is appreciated. Overall, customers are satisfied with the product's performance.

"...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

"...Once we got it home and cleaned up, the heater actually worked pretty well...." Read more

"Works great, easy to set up and use ,heats well and a great value. very pleased." Read more

"Works better with a good blower fan to spread the good amount of heat it produces" Read more

284 customers mention "Heat source"255 positive29 negative

Customers like the heat source. They say it's easy to move around and offers a lot of heat for a primary use in smaller spaces. It works well to heat their old one room hunting camp, 20 x 20. It heats up quickly with a glass and metal layer over the front. The heater looks fine and has a temperature gauge and thermostat. They appreciate that it keeps them warm enough and keeps the pipes from freezing until they can obtain a pressure.

"...need 20,000 BTUs but this was the smallest I could find with an actual thermostat. The thermostat works great!..." Read more

"...our brother-in-law had one of these in his house and it kept it very comfortable...." Read more

"Works great, easy to set up and use ,heats well and a great value. very pleased." Read more

"Works better with a good blower fan to spread the good amount of heat it produces" Read more

131 customers mention "Ease of use"112 positive19 negative

Customers find the space heater easy to set up and use. They say it's simple and safe, with easy-to-use controls. The pressure regulator comes with directions, making it easy to move around and providing a lot of heat for a good price.

"...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

"Works great, easy to set up and use ,heats well and a great value. very pleased." Read more

"...is total simplicity, if it's not operating correctly, the fix can't be too complicated...." Read more

"...The heater has a thermostat which is a great asset. Easy to install and hook up." Read more

49 customers mention "Value for money"49 positive0 negative

Customers appreciate the space heater's value for money. They find it cheaper than electric, provides good heat for the price, and saves on fuel costs over the first season. The heater doesn't use a lot of propane and is fairly cheap to run.

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

"Works great, easy to set up and use ,heats well and a great value. very pleased." Read more

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

"...IT.....no smell, half the cost and NO VENTING NEEDED!!....the reduction in fuel costs over the first season already paid for itself....5 gallons of..." Read more

59 customers mention "Quality"23 positive36 negative

Customers have different views on the heater's quality. Some find it dependable and well-made, with a sturdy construction that produces popping noises as it heats up. Others feel it's cheaply made and doesn't include adapters, burning too much fuel.

"This heater works great and actually was probably too strong for my needs. But based on the reviews I bought and bought the accessories...." Read more

"...This one if very similar and seems to be well built with quality materials so we don't anticipate any issues with it once he gets everything ready..." Read more

"...even with the downsides I am saving a LOT OF MONEY on fuel costs....replacing it every 4 years would be cheaper then burning Kerosene.....but the..." Read more

"...Over priced for these reasons." Read more

44 customers mention "Noise level"14 positive30 negative

Customers have different experiences with the noise level of the space heater. Some report no noise, while others experience squealing, loud banging, and popping sounds when it cools down.

"...Noises. I haven't really noticed any noises that are bothersome...." 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

"...Unfortunately when you put it on one it'll flutter and make a lot of noise which has woken me up at night so I always make sure to turn it off..." 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

58 customers mention "Flame size"17 positive41 negative

Customers find the flame size of the space heater too small. They say it burns too much propane, produces a small flame as soon as the knob is released, and has incomplete burning that causes an odor when run for a long time. The flame is open with no shield, and the thermostat is always burning in the pilot light, making it a fire hazard.

"...I made this mistake and it burned through propane like a Corvette burns through gasoline...." Read more

"...Trying to light the pilot again does not work. It puts out a small flame as soon as you release the knob...." Read more

"...It's a bit modern looking for my taste but the blue flame and performance more than makes up for that minor flaw...." Read more

"...DOWNSIDES......the thermostat is always burning in the pilot light....in the first year of use the tip has burned down and will need to replaced........" Read more

39 customers mention "Parts included"3 positive36 negative

Customers are unhappy with the space heater's included parts. They mention it doesn't come with necessary components like a regulator, fittings, or hardware. Some say it doesn't come without feet or thermostats.

"...This needs to be installed with a low pressure regulator not a high-pressure regulator...." Read more

"...Being cheap and not including a hose gets you 3 stars even if, when I can actually use it, it works." Read more

"...Easily done once I had all the hardware, but nothing comes with the heater -- It's all on you, you're going to need to have on hand everything you..." Read more

"Doesn’t come with the fittings needed to connect to a supply line.. standard size so was easy to get at the local hardware store… lights easy and..." Read more

Mr heater ventless 30,000 BTU propane indoor heater
5 out of 5 stars
Mr heater ventless 30,000 BTU propane indoor heater
Was a very good and easy buying experience through the seller hassle-free got it way before the estimated arrival date exactly what I wanted would definitely buy through the seller again thank you
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Top reviews from the United States

  • Jeff P
    5.0 out of 5 stars Awesome In Every Way. Update...
    Reviewed in the United States on January 11, 2023
    Material Type: PropaneVerified Purchase
    I purchased a 30,000 BTU heater a few months back and love it. For the master bedroom & bath I've been using electric heaters. After still freezing in the back half of the house and a $600 power bill, I decided to buy another propane heater. In such a small area I certainly didn't need 20,000 BTUs but this was the smallest I could find with an actual thermostat. The thermostat works great! The range is marked 0-5 not in degrees. But they are very accurate. #2 setting keeps it at a toasty 74 degrees when it's below freezing outside.
    Being so large, it only runs for less than a minute cycling on & off as needed. I expect it will pay for itself the first month.
    It can set on the floor with the included feet or be wall mounted with the included bracket. It's a bit modern looking for my taste but the blue flame and performance more than makes up for that minor flaw.
    To connect it to a gas supply, you will need some brass fittings / hardware, a hose & regulator unless connected to your main supply. Every component is available on Amazon or your local hardware store. Don't forget teflon tape for the threaded pipe joints! Maintenance is quick & easy. Basically cleaning the pilot orfice of dust that may accumulate. The manual says every three months. My house apparently lacks any insulation and resembles a wind tunnel. (I bought it over the phone, without seeing it first lol. Initially I didn't care, I bought it for the land & planned on building a new house anyway. I just never imagined it could be this bad.) I'm in awe these two heaters can keep up but they do, and quite well! They are comparatively economical to operate too. Hopefully our new house will be finished before next winter. And yes, I'm transferring these heaters to the new place! If it turns out they aren't needed, I can put them in the stable to keep my horses warm. I would absolutely buy them again and highly recommend them! To clarify, the larger heater (30,000 BTU) in the living room would heat the entire house but the back is generally closed off. That's why I needed the smaller 20,000 BTU unit. FYI the thermostat in the living room is set about 2 1/4 to maintain 74 degrees. Obviously you can adjust the temperature to your liking. I prefer HOT. Shipping was fast and very well packed. UPS proof. After using them I suspect they would perform equally well in a workshop / garage where open flame wouldn't be an issue. Buy this, you will be VERY happy with it.
    Update... After complete satisfaction with the first two, I just bought a third for my workshop. This time Amazon suggested a hose & regulator kit which I gladly bought with it. It's somewhat of a pain in the rump to find the right hose & fittings each time. This made it really easy. Everything was included but a tank (which I already have). I think it's actually less expensive in kit form as well. I might buy #4 for the barn to spoil my horses. 😉
    95 people found this helpful
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  • Puppy lover
    5.0 out of 5 stars Fast shipment, great condition
    Reviewed in the United States on February 8, 2025
    Material Type: Natural GasVerified Purchase
    I hate to see reviews where the reviewer says that they haven't used it yet, but I hate to let this one go too long without my impressions of it so far. My husband wanted this for an old camper we got for my son to use in the backyard as a temporary office as he needed a quieter environment than a home with 4 small dogs was giving him. It was the beginning of winter and living in a mountain area we knew it would be getting cold soon and the propane heater in the camper was very 'iffy'. Once we got it home and cleaned up, the heater actually worked pretty well. So, we are going to use it in a wood working shop my hubby recently got and is in the process of insulating and wiring. (It's nice to have an electrician in the family!) He is also going to wire the camper better and take the power from the house out to it, so we may use an electric heater when we reach that stage. However, our brother-in-law had one of these in his house and it kept it very comfortable. This one if very similar and seems to be well built with quality materials so we don't anticipate any issues with it once he gets everything ready to go. We also read all the other reviews before getting it and it really does look like it will live up to its good rating. Since it may not be installed until early Spring, I wanted to give our impressions of it thus far. I will definitely update if we have any problems in the future.
    One person found this helpful
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  • A. Clark
    5.0 out of 5 stars heats well, east set up.
    Reviewed in the United States on February 20, 2025
    Material Type: PropaneVerified Purchase
    Works great, easy to set up and use ,heats well and a great value. very pleased.
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  • Aj
    4.0 out of 5 stars Good heater
    Reviewed in the United States on March 2, 2025
    Material Type: PropaneVerified Purchase
    Works better with a good blower fan to spread the good amount of heat it produces
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  • six
    5.0 out of 5 stars Does exactly what I need it to do
    Reviewed in the United States on May 10, 2024
    Material Type: PropaneVerified Purchase
    Purchased as an emergency heat source. I've owned it for 2-1/2 years and used it 3 times most recently for about 4 days.

    The first time I used it was for about 24 hours when it was 38 below and my fancy high-efficiency furnace had pressure switch problems and wouldn't run. This 20k btu heater on its highest setting kept ~750 sq feet of my (not very well insulated) home pretty much comfortable but did use about a pound of propane per hour which makes sense because propane is ~21k btu per pound and this is rated to use 20k btu per hour on high. Kept us warm enough and kept the pipes from freezing until I could obtain a pressure switch for the furnace. That use case was exactly what I worried about enough to buy a back up heater. It performed admirably.

    Last week in temps ranging from 22 degrees at night to 38 degrees during the daytime and 20-40 mph winds sucking the heat out of my place, I ran it for just a bit less than 4 days during a power outage. I never turned it up past the #3 setting and the thermostat switched the heat on and off as expected. After ~4 days, there was still at maybe 8-10 lbs of propane left in the 30lb tank it was hooked to. I think I could have gone at least another full day without having to swap tanks.

    I use the included feet and don't have it permanently mounted to the wall. It's perfectly stable. I run the regulator hose to a tank outside through a casement window and just run a strip of duct tape to seal the rest of the window. And, while I do have an CO & combustible gas detector in the area where I operate this, I don't actually worry about it. So long as the flame is almost entirely blue and it isn't sputtering, then everything is working right and there's nothing to fret about.

    When I bought this, I understood that I needed a hose, regulator, and a 90 degree fitting. Many of the negative reviews regard folks not knowing that. I suppose in today's world where we expect instant gratification and hope to put forth zero effort, it's hard to blame them for being upset. It wasn't any sort of problem for me, though.

    Other complaints seem to be about noises and odor. 1) Noises. I haven't really noticed any noises that are bothersome. There's a tick when the thermostat regulates the gas up/down/on/off, but that's what mechanical thermostats do. No problem for me. 2) Odors. Yes. Burning propane indoors unvented creates a bit of an odor. It's no worse than operating a propane oven/stove. I don't find it to be overwhelmingly offensive, so no problem for me on that point, either. I will say that 2 days in to this latest use, I did choose to open a couple of windows on each side of the house for about 15 minutes once. That served to remove the odor for a while and decrease the humidity a little.
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  • Vicente Flores Tapia
    5.0 out of 5 stars es una buena opción
    Reviewed in Mexico on January 9, 2024
    Material Type: PropaneVerified Purchase
    El producto funciona muy bien, el consumo de gas es bajo, estoy contento con mi compra
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  • Jorge Gordillo
    5.0 out of 5 stars Muy eficiente!
    Reviewed in Mexico on September 16, 2021
    Material Type: PropaneVerified Purchase
    Calienta super y el termostato es un plus
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  • Consuelo Sánchez
    1.0 out of 5 stars Necesito su ayuda
    Reviewed in Mexico on January 17, 2021
    Material Type: PropaneVerified Purchase
    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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    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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  • Eloisa
    3.0 out of 5 stars Instrucciones
    Reviewed in Mexico on January 30, 2025
    Material Type: PropaneVerified Purchase
    Las instrucciones de armado están en ingles y las necesito en español
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  • Cliente de Amazon
    3.0 out of 5 stars Tiene una falla.
    Reviewed in Mexico on January 14, 2021
    Material Type: PropaneVerified Purchase
    El calentador tiene uns falla, no sé si sea general o solo el mío.
    El calentador es automatico, enciende cuando la temperatura deciende y se apaga cuando alcanza la temperatura que eliges.
    La falla es que cada vez que prende, el calentador lanza una llama intensa que sobresale como 10 centimetros fuera de la rejilla de protección. Esto solo sucede durante una fracción de segundo para después volver a la flama normal.

    Intenté comunicarme con Mr Heater, pero nunca logré que me contestaran, ni por correo, ni por llamada, ni por una plataforma ineficiente que tienen para su atención a clientes.

    Lo comento para que lo tengan en cuenta, si les toca uno que funciona bien, excelente. Si les toca falla, sepan que será dificil recibir atención por parte de la marca.
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