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Martin - MDV20VN Natural Gas Direct Vent Thermostatic Heater 20,000 Btu Visor

This Natural Gas Direct Vent Thermostatic Heater 20,000 BTU Ships in 1-5 Business Days

*This Martin Heater Product cannot ship to Alaska or Hawaii.

MDV20VN Natural Gas Direct Vent Thermostatic Heater 20,000 Btu Visor by Martin



If you need a propane heater instead, you can find them here.


  • WARM, ADJUSTABLE HEAT – Keep living or workspaces heated with a direct vent wall heater with a room thermostat that lets you monitor your heat dispersion. BUILT-IN THERMOSTAT (Low - High Dial) - 20,000 BTU

  • EXCLUSIVE GLASS CERAMIC WINDOW – A true market exclusive accessory, ONLY available on 11,000 Btu and 20,000 Btu indoor natural gas units.

  • STYLISH & CLEAN ENERGY – A sleek fireplace design, our direct vent gas heater produces safe, clean energy that’s economical and aesthetically pleasing.

  • QUICK & EASY INSTALLATION – Connect our natural gas wall heater direct vent to a gas fitter and it will heat your living space effectively with low maintenance required. (The wallʼs thickness cannot be less than 4-1/2” (11.5 cm) nor can it exceed 12-5/8” (32 cm).) For the easiest experience, we recommend hiring a licensed professional.

  • CSA-CERTIFIED QUALITY (AFUE 80% efficient) – Heavy-duty grill made with die-cast aluminum and glass-ceramic window for more safety, Product is certified for use in the USA and Canada.

Martin - Natural Gas Direct Vent Thermostatic Heater 20,000 Btu VisorPRODUCT MANUAL

    Picture of Martin Direct Vent Heaters Comparison Chart

    Free shipping on a variety of products!

    As soon as your product is on its way out of the warehouse, we will email you the tracking number for your shipment. 

    Free Shipping on a variety of products! If the product you're interested includes free shipping, it will be indicated on the product page. Otherwise, shipping costs will be calculated based on the size of the package and your location.

    No Risk Damage Policy

    Easy Returns

    For more information about Shipping and Returns CLICK HERE

    Price Guarantee

    We care about our customers and want to offer the best prices available for our top notch products.

    Conditions of our 100% Price Match Guarantee:

    • The item must be purchased from us before we can match it

    • Buy one, get one free offers and Rebates are not eligible

    • The item must be in stock on the competitors website

    • The competitor must be an online store, not a retail location

    • The website can't be a discounter or auction website ( such as eBay, overstock, etc.)

    • The company must be an Authorized Retailer of the product in question

    • The Price Match Guarantee is based on the final price of the product including shipping and taxes

    1. We care about you. We don't want to just sell you something and never hear from you again. We know that in order to get return business, we need to provide not only good products, but good customer service.
    2. We're a family owned business! My wife and I run Wild Oak Trail, and when you buy from our store, you're actually making a difference to our family!
    3. We LOVE being prepared. In uncertain times, it feels really good knowing that we have backup power, food and water ready to go!
    4. We source QUALITY. We expect every one of our customers to be happy with their purchase and tell their friends and family about it!