Top 7 Best Ventless Gas Heaters with Thermostat and Blower

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When the cold weather is in full swing, the best ventless gas heaters with thermostat and blower are efficient ways to help you feel comfortable.

These heaters are small and unobtrusive. They do not produce any smoke that will fill a room, making them the best heating option for your space. Compared to traditional heating methods, most ventless gas heaters are quite efficient.

Furthermore, Since they use propane, you will not spend a lot on electricity bills. Also, propane is one of the cleanest burning fuels. Therefore, these heaters will not release many of the toxic emissions associated with most heating options.

Best Ventless Gas Heaters with Thermostat and Blower?

Last update on 2021-07-26 / Affiliate links / Images from Amazon Product Advertising API

Ventless gas heaters with the thermostat and blower come in numerous forms and with various features. For prospective heater owners, shopping for the right system can be challenging and time-consuming. 

Starting with the best units on the market can minimize the time and effort you spend shopping. Pay close attention, because any of the models below can be the right heating companion for you.

1. Mr. Heater MHVFB30NGT 30,000 BTU Vent Free Blue Flame Natural Gas Heater

Mr. Heater 30,000 BTU Vent Free Blue Flame Natural...
  • 30,000 BTU Natural Gas heater to heat spaces up to 1000 square feet
  • Blue flame burner for even convection heat. Maximum Elevation (Ft)-4500. Fuel Consumption/Burn Rate (Gal/Hr)- .030 MCF
  • Automatic low oxygen shut-off system (ODS). CSA Certified
  • Operating this heater at altitudes over 4,500 FT above sea level could cause pilot/ODS to shutdown the heater.included.Theromostat, legs and wall mounting hardware
  • Fuel Type:Natural Gas.Not for use in bathrooms, bedrooms, or recreational vehicles

Last update on 2021-07-26 / Affiliate links / Images from Amazon Product Advertising API

If you are looking for a safe, indoor supplemental heating solution even on the coldest days, the Mr. Heater MHVFB30NGT is a great pick. This heater uses natural convection to circulate warm air evenly throughout your room. It only runs on natural gas, which means no chimney, venting, or electricity is required. It is, therefore ideal for emergencies like power outages.

This blue flame burner generates 30,000 BTU, enough to heat areas of up to 1000 square feet. Check out how much propane does a 30,000 BTU heater use guide.

It offers clean-burning and cost-effective heat. The mounting brackets and fasteners are included in the package. Therefore, you can easily mount it on the wall or securely fasten it on the floor.

The onboard thermostat enables this device to achieve the room temperature you want without much supervision. That said, you have to buy the blower fan separately if you would like quicker indoor heating. 

Starting up the heater is easy, thanks to its battery-powered electric ignition – battery included. Furthermore, automatic low-oxygen shut off system (ODS) is included to shut off the heater when low oxygen levels are detected in the room. 

All in all, Mr. Heater’s MHVFB30NGT is an excellent gas heater with thermostat and blower. It offers commendable heating for medium-sized rooms. It is also easy to install, use, and maintain. Although the blower fan does not ship with the unit, buying it will not cost you much.


  • Excellent heating performance for medium-sized and large rooms
  • Easy to install and use
  • Clean, efficient heating
  • Commendable safety features
  • Affordable price


  • The blower fan kit is sold separately.

2. Rinnai FC824P-Vent Free Space Heater

Rinnai FC824P Vent-Free Propane Gas Heater
  • Rinnai FC824P Vent-Free Space Heater - Propane
  • Input range 8,000 to 22,000 BTU/hour
  • Ideal supplemental heating solution for room additions, basements, and sunrooms
  • Tilt Switch - Push-Button, Electronic Ignition
  • Cool-to-the-touch cabinet keeps you and your family safe

Last update on 2021-07-26 / Affiliate links / Images from Amazon Product Advertising API

The Rinnai FC824P is a ventless and high-quality propane wall heater with thermostat and blower. Because it is one of the safest propane heater models available, it is ideal for use around children or pets. It is also the perfect solution for hard to heat areas like basements, sunrooms, and room additions.

With a maximum heat output of 22,000 BTU, this unit provides all the warmth you need for a room as large as 750 square feet. It has an onboard fan that helps distribute heat energy throughout your space. In addition, it features a  modulating valve and speed blower. These two extract just the right amount of gas necessary to deliver the required amount of heat.

This Rinnai unit utilizes its programmable thermostat to deliver a genuinely autonomous heating experience. It monitors indoor temperature and adjusts itself accordingly. Remarkably, it does all these with a 99.9% efficiency. Even at the highest fan speed, the FC824P manages a noise output of fewer than 50 Decibels.

Rinnai products are known for their safety features, and the FC824P is no exception. It features a cool-to-touch cabinet to reduce the risk of burns. An Oxygen Depletion Sensor and a tilt switch are also included. Meanwhile, the gas line cuts out in case the flame goes out, preventing gas leaks. 

The Rinnai FC824P is a praise-worthy pick for indoor heating. Installation is easy, and all the equipment you need, including the blower fan, comes as a package. Moreover, comprehensive safety features make it ideal for home use. Although it is significantly pricier than most competitors, you are assured of getting your money’s worth.


  • Excellent design and build quality
  • Decent performance for its size
  • Quiet operation
  • Gas modulator for efficient heating
  • A generous set of safety features


  • Expensive

3. Rinnai FC510N

Rinnai Vent Free Fan Convector, FC510P
  • Input range 5,600 to 10,000 BTU/hr
  • Ideal supplemental heating solution for room additions, basements, and sunrooms
  • Tilt Switch - Push-Button, Electronic Ignition
  • Cool-to-the-touch cabinet keeps you and your family safe

Last update on 2021-07-27 / Affiliate links / Images from Amazon Product Advertising API

Like the Rinnai FC824P, this Rinnai model is a vent- free fan convector designed to give you an unmatched level of carefree coziness. 

This heating unit has a BTU of 10,000, enough to heat small and medium-sized sized rooms. It is smaller than the FC824P and is, therefore, a better option for space-constrained houses. Furthermore, it is 99.9% efficient for significant energy savings.

The FC510N is equipped with a thermostat that helps keep the temperature in the room consistent and wonderfully comfortable. As a convection heater, it evenly distributes warm air throughout the space, even in faraway corners. You can install it with ease in nearly any room, no venting or chimney required.

As you would expect from a Rinnai unit, safety features are abundant. You get a cool-to-touch cabinet and push-button electronic ignition. The tilt- switch automatically disables the heater when it is knocked over. Meanwhile, the Oxygen Depletion Sensor actively monitors oxygen levels. If inadequate oxygen levels are detected, the unit automatically shuts off. Lastly, the control panel features Child Lock functionality to prevent unintended operation, especially by children.

Rinnai gas heaters with thermostat and blower are known for comfort and convenience. For this unit, the acclaimed manufacturer delivers as expected. The only downside is that the thermostat occasionally gives inaccurate temperature readings when the heater is placed on a drafty surface.


  • Compact design and high-quality build
  • Top-level gas efficiency
  • Abundant safety features
  • Decent heating performance for small and medium-sized rooms


  • The thermostat is at the bottom of the device

4. Bluegrass Living Natural B30TNB-BB Vent Free Blue Flame Gas Space Heater with Blower 

The Bluegrass B30TNB-BB is another ideal vent-free gas heater with thermostat and blower. This blue-flame gas heater is perfect for taking the chill out of a large room. If you are looking to add supplemental heat to your garage, family rooms, workshops, and hard to heat areas, it is an excellent option. 

This unit comes with all the mounting equipment you require. The wall-mounting bracket attaches easily to the unit’s back. Meanwhile, the base feet provide a sturdy support structure when the device is fastened to the floor. 

The Bluegrass B30TNB-BB has a heat output of about 30,000 BTU. According to the manufacturer, it can comfortably heat rooms as large as 1,400 square feet. Moreover, it features an in-built thermostat that allows you to control indoor temperatures as you desire. If you care deeply about the environment, you will be glad to learn that the unit offers 99 percent efficiency and near-zero emission of propane fumes.

The onboard blower fan is exceedingly effective at distributing air throughout a room. However, it is hardly quiet enough to let you work or sleep undisturbed, even at low speeds. For office or bedroom use, you are better off with a smaller, more subtle heater like the Rinnai FC510N.

Fortunately, the B30TNB-BB does not disappoint in the safety department. It comes with an oxygen depletion sensor and an automatic shut-off system. The push-button piezo ignition with a built-in pilot adds to the safe use of this unit.

As a large-room gas heater with thermostat and blower, the Bluegrass B30TNB-BB ticks most of the boxes that count. It does not come cheaply, but its robust performance and long-term reliability are well worth the money. 


  • Non-electric
  • Push-button piezoelectric ignition
  • Automatic safety shut-off
  • Wall mounting equipment included


  • Fan can get noisy

5. Bluegrass Living Natural B30TNB-BB Vent Free Blue Flame Gas Space Heater with Blower

Mr. Heater Corporation F299730 Heater, One Size,...
  • 30,000 BTU Liquid Propane heater to heat spaces up to 750 square feet. Restricted in Canada
  • Blue flame burner for even convection heat. Supplemental heat in cold rooms, Additions, Sun rooms, Cabins
  • Automatic low oxygen shut-off system (ODS). CSA Certified. Fuel Consumption/Burn Rate (Gal/Hr) - 1.389 lbs/hr
  • Operating this heater at altitudes over 4,500 FT above sea level could cause pilot/ODS to shutdown the heater.
  • Theromostat, legs and wall mounting hardware included.Fuel Consumption/Burn Rate (Gal/Hr)

Last update on 2021-07-26 / Affiliate links / Images from Amazon Product Advertising API

Mr. Heater F299730 is another great ventless gas heater. It is a natural convection heater that comes with a thermostat for convenient temperature control. You can also fit a blower fan for more rapid warm air distribution.

This model is quite attractive and modern. It comes with wall mounts, base legs, and a black wire cage for installation. You have the option of either mounting it on the wall or fastening to the floor. Installing it is relatively straightforward. However, you need to buy a few extra parts. The fuel hose and regulator, for instance, do not come with the unit. 

Mr. Heater recommends that the F299730 be deployed in spaces measuring up to 750 square feet. With a 30,000 BTU output, the heater offers reliable warmth. Even more commendable is that it does not have blatant altitude restrictions like most of its competitors. If you love hiking, this Mr. Heater can be your favorite companion in the cold mountains. 

The F299730 is as user-friendly as it is powerful. It features a very simple battery-powered electronic ignition for safe and convenient heating. The thermostat is accurate, regardless of where you place the unit. Meanwhile, safety features like an ODS and auto-shut-off are also present to give you peace of mind. 

Mr. Heater’s units are not known for their bells and whistles. Unsurprisingly, this unit does its job without gimmicks. Some users have expressed frustration with the blower fan. Nevertheless, the heater is affordable, which means you will not feel shortchanged.


  • Attractive, modern design
  • Easy to install and straightforward to use
  • Versatile mounting capabilities.
  • Decent heating for medium-sized rooms


  • The fan’s performance is relatively underwhelming

6. Bluegrass Living Natural B30TNB-BB Vent Free Blue Flame Gas Space Heater with Blower

ProCom MG30TBF Ventless Dual Fuel Blue Flame Wall...
  • ASSEMBLED IN USA - Product is proudly assembled in the USA Skilled American workers manufacture the parts assemble and test our products Only high-quality materials and parts are used in the manufacturing of our products Our factory features state of the art manufacturing equipment
  • TECHNOLOGY - Thermostatic Control! Maximum 30 000 BTU Dual Fuel Vent Free Blue Flame Heater using Natural Gas or Liquid Propane
  • DEPENDABLE - 5 Heat Settings with micro heat adjustments between each setting Thermostat Control -“ The control automatically cycles the burner on and off to maintain a desired room temperature
  • SAFE - Push button Piezo ignition with Built-in pilot Oxygen Depletion Sensor (ODS) immediately shuts down the heater if carbon monoxide or lack of oxygen is detected
  • 1 Year Limited

Last update on 2021-07-26 / Affiliate links / Images from Amazon Product Advertising API

The ProCom MG10TBF is a dual blue-flame heater that can use either propane or natural gas. It could be just what you need to keep your home warm and comfortable during the cold season. You do not require electricity to operate it. This factor makes it perfect for emergencies like power outages or any in-house emergencies. It is also ideal for use in an RV or garage.

The ProCom MG30TBF has a slimmer and more modernized profile than most of its rivals. Therefore, it will effortlessly fit into your home’s aesthetics. 

Giving off 10,000 BTU, this unit is enough for spaces of up to 300 square feet. The built-in thermostat makes it easy for you to maintain the desired room temperature. All you need to do is push a button to enjoy a great source of dependable heat. 

As a blue-flame convectional heater, the MG10TBF primarily depends on natural convection. However, you can equip it with a blower fan for more vigorous heat circulation.

For safety, you get a push-button Piezo ignition and an oxygen depletion sensor. The sensor immediately shuts down the heater when low oxygen levels are detected. For convenient installation, a wall mounting bracket is included in the package.

ProCom heaters are famous for their durability. Buying the brand is an assurance that you will enjoy a cozy home for many seasons to come.


  • Slim, adaptable design
  • Easy to install
  • Commendable safety features for its price
  • Non-electric


  • Best for heating small spaces

7. Bluegrass Living Natural B30TNB-BB Vent Free Blue Flame Gas Space Heater with Blower

Mr. Heater 30,000 BTU Natural Gas Blue Flame Vent...
  • Safe, clean burning heat
  • Operates without electricity during power outages
  • Built-in oxygen shut off sensor and adjustable thermostat
  • Easy to install; 99.9% efficient
  • Wall mount or free standing

Last update on 2021-07-26 / Affiliate links / Images from Amazon Product Advertising API

Winding down our list is another blue-flame heater, the Mr. Heater VF30KBLUELP. This unit is an excellent supplemental heating solution in rooms that do not warm well. For a Blue Flame heater, it warms the air. It does not radiate the heat like an infrared unit. It is also remarkably compact.

The VF30KBLUELP has a heating capacity of 30,000 BTU. It comfortably heats areas of up to 750 square feet. Unlike the Mr.Heater Corporation F299730, this unit cannot operate at altitudes of over 4,500 ft. On the bright side, it provides fumeless heating. It also offers both natural convection and blower-fan integration, depending on the circulation you need.

This heater is friendly to install and use. It comes with most of the necessary wall and floor mounting equipment. It also features a radiant floor thermostat for autonomous temperature control. 

Standard safety functions like an Oxygen Depletion Sensor, a high-temperature auto shut-off, and a tilt-switch are included. You can rest assured that this heater will provide you with years of comfortable and safe heat.

Overall, Mr. Heater’s 30,000BTU propane blue-flame gas heater is an attractive choice for affordable and convenient indoor heating. Its size makes it easy to move from one room to another. It is also safe enough for use around kids and pets. 


  • Portable, practical design with versatile mounting options
  • Decent heating performance for medium-sized and large rooms
  • Clean, efficient heat
  • Friendly to install and use
  • Admirable safety features


  • The blower fan, hose, and regulator are sold separately.

What is the Best Ventless Gas Heater with Thermostat  and Blower 

When the cold weather is in full swing, the best ventless gas heaters with thermostat and blower are efficient ways to help you feel comfortableThe ventless gas heaters above are all the top devices in their respective classes. If you know the size of your space, you can pick any unit that offers the right heating capacity and be good to go. 

However, if you get indecisive, we recommend going with our top choice; the Mr.Heater Corporation F299730. It offers everything you would reasonably want in a gas heater with thermostat and blower, all while remaining relatively affordable. 

Many homeowners place safety as their top priority when buying gas heaters. If you are willing to spend more for all the safe-use features you can get, go with the class-leading Rinnai FC824P. You will not have any worry about leaving the heater unattended with your children or pets in the house. 

As you have likely uncovered, the high-performing, feature-packed gas heaters are the priciest in the market. If you are cash-strapped, however, you can go for the 10,000BTU Procom MG30TBF. With its under $200 price tag, it proves that you do not need to sell a limb to get reliable heating. 

Frequently Asked Questions.

Now that you have decided to buy a ventless gas heater with a thermostat and blower, you need to know how it works. If you have any questions regarding purchasing and using these heaters, then keep reading. You will probably find the answer below. 

Also related: 

Best Direct Vent Propane Heater

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Best Natural Gas Heaters For Homes

Best Natural Gas Fireplace Inserts Review

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Q: Are ventless gas heaters dangerous?

A: The concept of ventless gas heaters is straightforward. Burning propane gas creates “smokeless” heat that does not require a smoke extractor.

However, some of these gas heaters are not as safe as you may think. As a carbon compound, propane consumes oxygen and gives off carbon oxides when it burns. Over time, these heaters can dramatically reduce the oxygen levels in a poorly-ventilated room. Worse still, burning propane in a poorly ventilated space can release carbon monoxide.

Gas heater manufacturers know that keeping your windows open to maintain ventilation can undermine your heater’s efficiency. Therefore, most top heaters come with an oxygen depletion sensor and a carbon monoxide sensor. These instruments monitor the air quality in a room and shut off the heater if dangerous conditions are detected. 

Some heaters also include advanced safety features for more convenient use, and to minimize the risk of fire. These functions include:

  1. Tip-over protection: automatically shuts off the heater’s power if it is accidentally knocked down or tipped over. 
  2. Overheat protection: turns off the heater when the internal components reach an unsafe temperature.
  3. Cool-to-the touch: prevents burns caused by accidentally touching the heater. The casing remains cool even when the heater radiates heat.

As you would expect, additional features add to the price of a ventless gas heater. If you are on a budget, you must determine the functions that are most important to you. 

Q: How do ventless gas heaters work?

A: Ventless gas heaters are room-heating devices that have no chimney vent. Therefore, they do not vent air to the outside of your home. Instead, oxygen is taken from the room where the unit is placed. The resulting heat is then vented out directly from the device. 

Convenience is a significant advantage of vent-free gas heaters. On the other hand, the degradation of indoor air quality is a notable concern because of the reduction of oxygen levels and carbon monoxide emission. Fortunately, many devices in today’s market offer air monitoring sensors and burn fuel with nearly 100 percent efficiency.

Q: What is the right heating capacity for a ventless gas heater?

A: When shopping for a space heater, one of the most important things to look out for is heating capacity. Propane heater capacity is measured in British Thermal Units (BTU). The size of your space determines the BTUs you need. 

Experts recommend 40 BTU per square foot of space. So, for a medium-sized area of 450sq ft, you would need 18000 BTU. However, this guideline is a general rule of thumb. It does not apply to every model. Other heaters may cover more or less space, depending on their heating technology or your indoor environment.

Q: Are ventless gas heaters noisy?

A: Like many housing appliances, ventless gas heaters emit some noise when running. However, some models produce more sound than others. For instance, convection heaters are generally quieter than heaters with blower fans. 

To determine your noise tolerance, consider where you intend to use the heater. A low-noise heating unit would be a perfect fit for your bedroom or office.

In case you hear any loud popping sounds from your heater, make sure to have it checked by a professional.

Q: Can you vent a ventless gas heater?

A: Unfortunately, you can not convert a ventless gas heater into a vented one. These devices are designed in a way that a vent cannot be added to them. If you want a vented gas heater, your only option is to replace your ventless system with a new vented unit. 

You may be interested in reading our Best Direct Vent Gas Fireplace guide.

Wrapping Up

Ventless gas heaters with thermostat and blower are great alternative heating solutions for indoor spaces. They provide smoke-free warmth efficiently, and they are easy to use. Technological advancements have also made them safer over the years. Best of all, they are more affordable than central heating systems.

We do not doubt that this post will guide you towards finding the right ventless gas heater for your space. Go out there and do some shopping!