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Martin Direct Vent Heater Overview | Wild Oak Trail

by Jefferson Ebasan November 12, 2021 7 min read

What is direct vent heater?


Direct Vent Heater is a combustion chamber / box that uses outdoor air to create heat. It is composed of a two-part system: air intake and an exhaust system. It warms the air in a room by using the outside air pulled through a direct vent into the room to heat the area and discharge the exhaust fume or waste generated from the room through an exhaust piece.

Picture of Martin Direct Vent Heaters Comparison Chart

It is a great outdoor survival gear for campers, digital nomads, and various outdoor enthusiasts. This is because they do not need to be connected to a chimney and can be installed on exterior walls. As we are currently enjoying the crisp fall mornings, turning up the heat, and piling on blankets with a big cup of cocoa, the direct vent heater can serve as an excellent heating source in your home that avoids expensive alternatives.


Benefits of Using A Direct Vent Heater

  • It is a powerful, economical, and unobtrusive alternative to a furnace or boiler.
  • It is easy to install and maintain.
  • It has precision heating, with the ability tovary intensity and fan speed.
  • It is a simple one-hole venting and needs noductwork.
  • Some direct-vent models feature programmable thermostats and other automated settings for ease of use.


Types of Direct Vent Heaters

At Wild Oak Trail we are familiar with two major types of direct vent heaters. They include:

Direct Vent Propane Heaters: 

They are essentially propane-fired combustion chamber that use outdoor air to create heat and vent any fumes produced by combustion chamber directly outside your home via a small pipe through an exteriorwall.

They are efficient, powerful devices that can transform a hard-to-heat living space in your North American home or an outdoor living area.

Direct Vent Natural Gas Heaters:

This type of heater is a gas type. It is a wall-mounted heater that has an outdoor part on the outside through which gas residues from combustion chamber are vented.


Difference between Propane Heaters and Natural Gas Heaters

When debating between natural gas and propane heaters, some factors need to be considered when making your decision. They include:

Fuel Cost: There are many areas where natural gas is not an economical choice. In low-density areas, the cost to connect to the natural gas grid can cost more for those residents. Propane on the other hand is readily available from multiple supply sources and retail suppliers.

Heating efficiency:Propane and natural gas heaters provide the same heating efficiency since they both use the same equipment. Most heating equipment will work with either propane or natural gas by adding a conversion kit for the specific fuel source. The conversion kit installation must be performed by a licensed professional. 

Environmental impacts:Both natural gas and propane are clean burning. Propane, however, is eco-friendly both before and after combustion from the combustion chamber. Propane is non-toxic and can't hurt water or soil in the event it escapes into the environment. Natural gas, on the other hand, contains methane, which when leaked into the environment before combustion is one of the biggest contributors to greenhouse gases.

Delivery method: Natural gas is delivered to your home automatically via a pipeline while propane needs a dedicated expert to come regularly to your home to resupply you with fuel and ensure everything is running smoothly. However, with a Superior Propane’s SMART Tank and Residential No-Run-Out Guarantee, you might not have to worry about running out of fuel.  



Top 4 Best Direct Propane Vent Heaters For Outdoor & Offgrid Use


Martin Direct Vent Propane Heater

The Martin Direct Vent Propane heater is anamazing device that will leave you in awe with its amazing features. It has all the parameters that allow for fast heat coverage in a rapid flow. It is quite effective to use for any propane-based heater and its burn rate is high and decent for regular usage.

This device comes with an 8000 , 11000, and 20000 BTU heating capacity enough for a whole room.


  • It is easy to install:It comes in a pre-assembled state so you won’t have to worry much about installation.
  • It is easy to mount: It comes with wall mounting brackets on top of it. This makes them easy to mount especially if you have screws fitted in.
  • It has an adjustable thermostat: Its adjustable thermostat allows you to easily change the temperature of heat by adjusting a dial knob present.
  • It can automatically Shut-off: When heat inside your room is adequate, working sensors can automatically stop heating.


Martin direct vent propane piezo ignition system eliminates the need for electricity and the potential danger of pilot lights. It is ideal for off-grid applications like camps and emergencies like power outages. This unit boasts an inspiring modern design. The glass-ceramic window enables you to see the blue flame produced by the burner. Its body is made of cast aluminum, protecting it against wear and tear. The installation is also straightforward, as the package comes with a complete installation kit.

At Wild Oak Trail, our top-rated and most sort-after Martin Direct vent Propane Heaters include:

Picture of Martin - Propane Direct Vent Thermostatic Heater 20,000 Btu with Visor MDV20VP side view

The Martin Direct Propane thermostatic heater 20,000 BTU visor is a sleek fireplace design with a direct vent heater that produces safe and clean energy that is economical and aesthetically pleasing.

 It keeps your home looking sleek and stylish with its modern-style body. It requires no electricity and is simple to install with a die-cast aluminum body that ensures the durability of the unit and a glass-ceramic window which is an exclusive accessory for more safety.

It has an AFUE rating of 80% and is certified for use in USA and Canada. We recommend hiring a licensed professional to install this device for a smooth and easy experience.


Picture of Martin - Propane Direct Vent Thermostatic Heater 11,000 Btu with Visor MDV12VP side view

The Martin - Propane Direct Vent Thermostatic Heater 11,000 Btu Visor is a unique and stylish way to heat your space. Just like the 20000 BTU Direct Vent Martin Heater, it is made with die-cast aluminum for durability and a glass-ceramic window for extra safety. It also comes complete with a built-in

thermostat that allows you to easily adjust the room temperature to your comfort level. Its glass-ceramic window offers a beautiful "fireplace" view of the flame heating your space and can be connected to a gas fitter to heat your living space effectively with low maintenance required. Its quality is CSA- Certified and can be used in USA and Canada.

At Wild Oak Trail, the Martin - Propane Direct Vent Thermostatic Heater 11,000 Btu Visor comes with an AFUE rating of 80.6%. Users have lauded this unit for its ultra-quiet operation and inbuilt thermostat. Both features make it exemplary for cold winter night heating.

  • US Stove AGDV12L Ashley Direct Vent 11,000 BTU

The US Stove AGDV12L Ashley direct vent is a stylish direct vent propane stove for small rooms. It offers exceptional safety options and convenience at a competitive price tag. It features a slim-line design that makes it blend easily with most decors. It also comes with a complete installation kit to relieve the installation headache.

Just like the martin direct vent propane, the AGDV12L does not need electricity to operate. Its matchless piezo ignition makes lighting convenient and safe. It has an AFUE rating of 76%, it can provide a maximum heat output of 11,000 BTU. According to users, the AGDV12L maintains decent performance in rooms as large as 350 square feet. It also offers a great set of safety features, including automatic shutoff and a thermocouple safety valve.

  • Rinnai EX38CTWP Wall Mounted

The Rinnai EX38CTWP comes in a beautiful cabin design that fits into any room effortlessly. It has an installation kit that provides everything you need to set up your unit. It has a 13,200 – 36,500 BTU heating system capacity range, with direct vent wall furnaces that can heat areas as large as 2,500 square feet without breaking a sweat. Its inspiring performance, comprehensive safety functions, and user-friendliness are features that make it a favorite among shoppers.

This model is the most efficient amongst its peers as a result of its seven-stage modulating gas valve. The valve feeds just the right amount of gas required to maintain your desired room temperature. The onboard blower fan offers robust air distribution when you need it. It is however not the quietest fan you will find in a direct vent heater.

Its programmable thermostat ensures the heater will achieve and maintain a set temperature without supervision. For safety reasons, it comes with a cool-to-touch cabinet and a child-lock functionality. Overall, the Rinnai EX22CWP is high-quality, durable, reliable, and safe. However,  If you are on a budget the price will likely be a deal-breaker.

  • HouseWarmer Slim-Profile Direct Vent Heater with Blower

The HouseWarmer Slim-Profile is a powerful unit that offers excellent value. Its slim design makes it easy to fit in small spaces and the simple look allows it to blend well with its surroundings.  It requires no electricity to ignite and can be deployed in garages or cabins without worrying about an extra power outage.

As a 15,000 BTU heater, the HouseWarmer Slim provides enough heat for 525 square feet of room. It also comes with a blower fan, that can be a ramp-up for quicker air distribution. It, however, does not come with an onboard adjustable thermostat and will need the heat distribution to be adjusted manually.

Unlike many of its competitors, the HouseWarmer Slim-Profile does not offer a body built to ensure peace of mind when it comes to safety. It gets hot after a few hours of continuous operation and its lack of child-lock functionality can result in unsupervised tampering.  Nevertheless, this heater offers excellent performance for its price. It also comes with a decent kit and easy-to-use manual for easy installation.

Jefferson Ebasan
Jefferson Ebasan

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