Best 5 Ventless Garage Heaters (Gas & Propane) Reviews 2022

Purchasing a heater for your garage heater is not an easy decision because you should research which garage heater is best for warming your garage when winter comes. Ventless garage heaters are especially good for the job because they are very economical.

This review will present a list of the 5 best vent free garage heaters and in the conclusion, you will find the two best picks overall.

Tips When Buying A No Vent Garage Heater

What Is A Ventless Garage Heater?

A ventless garage heater is a heater that does not need any form of ventilation for its operation. Vented garage heaters usually use some form of an exterior duct, usually through the roof or a wall outside the house or building.

Why Use A Ventless Garage Heater?

Garage heaters that do not use a vent have certain benefits over vented heaters. The most important one is that these heaters are more economical and affordable than regular ones. They are the perfect addition to your garage or shop and are easy to install.

What To Look Out For

The most common problem people experience with this type of heater is moisture. These vent-free heaters generally put out a lot of moisture because they use water. This can damage your walls and anything that is out of wood. To prevent this from happening, make sure your walls are properly insulated. You can also buy a dehumidifier.

Possible Dangers

Other than the excess moisture that damages walls and woodwork or even causes mold, the most obvious danger is carbon monoxide which is released. CO is a very poisonous gas, but has no smell or color, making it very hard for people to detect. That is why most ventless garage heaters today have oxygen depletion sensors (ODS) which regulate the amount of oxygen and carbon monoxide.

Useful In Emergencies

The most situation in which we require quick and instant heating is power outages. The no vent heaters are perfect for that. They ensure you have a heat source even in these emergency situations. They are also quite convenient on camping trips if you hook them to a generator.

Top 5 Ventless Garage Heaters On The Market

Best Ventless Propane Garage Heater

Mr. Heater Corporation Vent-Free  Radiant Propane Heater

Radiant Propane Heat

This radiant heater uses liquid propane to heat up garages, shops and similar spaces. It has a 10,000 BTU thermal output and is capable of heating a 250 sq feet sized space. That is roughly the equivalent of an average garage. It is good to use in the more cooler rooms in the house.

Wall Mounting Option

Although this heater can be used as a free-standing unit, it can also be permanently mounted to your wall, which is more convenient and saves space. Additionally, you can bolt it to the floor. All the necessary hardware for wall mounting and fastening is included in the package with the heater itself.

Reliable And Comfortable Heat

You can rest assured that there will be no carbon monoxide poisoning with this Mr. Heater model, as it has a factory standard oxygen depletion sensor. You can enjoy the pleasant warmth freely and without care.

Multi-Output Valve

This heater comes with a multi-output valve which has the function of regulating the temperature however you desire. One-handed ignition is enabled by a Piezo ignition built into the rotation knob. It uses multiple burner tiles.

Do Not Use At High Altitudes
It is worth bearing in mind that this heater is not suitable for operation at high altitudes. When on an altitude over 4500 ft above sea level the ODS can shut down the heater. It is also not available for sale in Canada or California.

Best Ventless Garage Heater With Thermostat

Rinnai FC824P Vent-Free Propane Gas Heater

Exceptional Quality And Efficiency

Rinnai is a very respectable manufacturer that produces many high-quality heaters, and the FC824P is one of their most representable models. Like most ventless heater, it burns with a 99.9 % efficiency. It is propane powered. It is made of stainless steel and has a simple design.

Complete Safety Assured

To eliminate the frequent perils regarding ventless heaters, the Rinnai garage heater has safety additions. It has an oxygen depletion sensor and a tilt switch which cuts off the unit’s gas supply in case it tips over or disconnects.

Thermostat And Digital Display

It has a wide input range from 8000 to 22 000 BTUs. This amount of thermal output is sufficient to heat 1000 sq feet. It operates on 29W and 120V. You can regulate the temperature using a thermostat that can be programmed and digital display.

Safe For Children

If your family is one with small children, you don’t need to worry about the potential dangers for your kids. The exterior of this heater constantly remains cool to the touch so you don’t have to worry about possible burns. You can also lock the control panel for added safety. The FC824P also features electronic ignition.

Undemanding Setup

This ventless propane garage heater is very user-friendly. The installation process is fairly simple and won’t take up much of your time. A gas connection is not included with the heater, but it is required. It is recommended to place it on a base or fasten it to the floor, although it can be wall-mounted as well. It has a 3-year warranty.

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Best Ventless Natural Gas Garage Heater

Mr. Heater Natural Gas Blue Flame Vent Free Heater

No Electricity

This vent free natural gas heater doesn’t require electricity to operate. Along with saving you a lot of money, this means you can use it in an emergency situation. If you lose power suddenly, hook up the heater to a generator and it will provide pleasant heat.

Blue Flame Burn

This is a radiant type heater which uses a blue flame convection heat. The blue flame burn tends to dry out the air, unlike infrared heaters that heat the surrounding objects. Produces 30 000 BTUs of pure and clean heat. It performs on a nearly perfect  99.9 % energy efficiency.

Perfectly Safe To Use

A common risk when using a vent free natural gas garage heater is its release of toxic gases such as carbon monoxide. To prevent any dangerous situations, this heater has a built-in oxygen sensor that shuts off the unit if oxygen levels fall below normal.

Easy And Versatile Installment

This heater can be attached to a wall and serve as a wall-mounted heater, or it can be free-standing. It comes with the mounting brackets and legs if you decide to keep it portable. It is very small and light, taking up hardly any space.

Additional Features

Mr. Heater comes with an adjustable thermostat and AA batteries for powering the spark igniter. A blower fan that helps air circulation is also included. It heats up to 750 square feet of space easily. It has a two-year limited warranty.

Best Cheap Vent Free Garage Heater

Dyna-Glo IR18PMDG-1 Vent Free Wall Heater

Infrared Technology

This heater uses radiant infrared heat which heats up the nearby objects rather than the surrounding air. This is a good feature as it doesn’t dry out the air in the room. It burns on 99.9% efficiency and is battery operated, therefore good for situations in which there is no electricity (e.g. power outage or camping trips).

Liquid Propane

The Dyna-Glo heater uses liquid propane for its operation, but also has a natural gas option. It provides up to 18,000 BTU per hour and can warm up to 700 square feet. All necessary safety features (ODS) are present.

Additional Parts

This heater can also be used with a separately sold fan if you want to distribute heat more evenly. It comes with a wall mounting bracket, but you can also buy fastening base legs if you prefer to keep it on the floor. If you opt to mount it on the wall, leave room between the heater and the wall so you don’t block the air intake.

Control Knob With Multiple Settings

The control knob on this heater offers three heat settings: low, medium and high, so you can customize it to your liking. This heater does not have a thermostat, so if you want to know the exact temperature you can attach your own device for detecting it.

Budget-Friendly

This is one of the more affordable models available right now and comes with a 1-year warranty. You should probably tighten the propane lines inside the unit before using it, as some users reported them to be loose.

Best Infrared Ventless Heater

ProCom MNSD2TPA Dual Fuel Ventless Infrared Heater

Dual Fuel Technology

This infrared vent free garage heater uses productive innovative technology. It is able to operate on both natural gas and liquid propane. Use the push-button for ignition.

Wall Mounted

The MNSD2TPA model can be mounted to your wall and comes with the bracket included. This is highly convenient and saves a lot of room in your garage or shop. It can heat up a large area quickly with 99.9% efficiency without losing you a lot of money.

Thermostat Control

Using the thermostat control you can regulate the temperature by setting it to your ideal heat level. There are 5 different heat settings available. This heater also has a maximum of 10 000 BTUs thermal output and can warm large areas of up to 300 sq feet.

Economical And Cost-Efficient

This no vent heater doesn’t require electricity to work, saving money and energy. Due to it being vent-free, it doesn’t require a chimney or other kind of outside duct.

Maximum Safety Ensured

Like most other ventless garage heaters out there right now, this one also has certain necessary safety features. It has the automatic shut off in case of oxygen depletion. It was manufactured and tested in the USA.

Conclusion: What Is The Most High-Quality Ventless Garage Heater?

All the vent free garage heaters listed here are good, but the best overall is the Rinnai FC824P Vent-Free Propane Gas Heater and the ProCom MNSD2TPA Dual Fuel Ventless Infrared Heater. Although a bit pricey, the Rinnai FC824P offers superb high-quality heating with a 3-year warranty. On the other hand, ProCom MNSD2TPA uses dual-fuel technology and is more budget-friendly.

If you are still searching for the heater that meets all your standards, check out this review of the best garage heaters. In this list, you can find your ideal propane garage heater, and here you can read about best gas heater.