At this time, orders to the USA are on hold. To place an international order, please contact the distributor at info@bismar.com
Martin Natural Gas Direct Vent Heater MDV8N – 8,000 BTU | Off-Grid Wall-Mount Heating Solution
Questions about this product
Questions about this product
Delivery and shipping
Delivery and shipping
Orders are typically processed within 1 to 2 business days from the time of purchase, excluding holidays and weekends.
Shipping times and cost will vary depending on the product and your location.
On average:
Ontario and Quebec: 2 to 5 business days
Western Canada: 4 to 7 business days
Atlantic provinces: 4 to 8 business days
Northern or remote areas: Contact us to confirm
The Martin MDV8N is a natural gas direct vent wall heater that delivers 8,000 BTU/hr and heats spaces up to about 194 ft², with no electricity required. Piezo ignition and a built-in thermostat make it a dependable, low-maintenance heat source for off-grid cabins, workshops and homes where the power lines don't reach.
It mounts on an exterior wall, drawing combustion air from outside and venting exhaust back outside, so your indoor air stays clean and your floor space stays free.
Key Features
- No Electricity Required – Piezo ignition lights the pilot without power, so you have heat off the grid or during an outage.
- Direct Vent Design – Combustion air comes in and exhaust goes out through the exterior wall, keeping indoor air clean.
- Built-In Thermostat – Low and high settings help you keep the room at a comfortable temperature.
- Heavy-Duty Construction – A die-cast aluminum body is built for durability and long-term use.
- Clean Wall Design – The die-cast front grill improves heat flow and keeps the back of the unit at room temperature, so the wall behind it doesn't get soiled.
- Wall-Mounted Installation – Fits walls from 4.5 to 12.63 in thick and keeps valuable floor space open.
Ideal For
- Small cabins
- Bunkies
- Compact offices
Good to Know
- Natural gas only; this model is not convertible to propane.
- Have the heater connected by a qualified gas fitter.
- Wall thickness at the installation location must be at least 4.5 in and no more than 12.63 in.
To serve our customers across Canada, whether you're in a major city or completely off the grid, many of our products are shipped via freight delivery to ensure safe and efficient transport. Depending on your location and the item, you’ll have the option to pick up from a nearby warehouse terminal or request home delivery.
Free Terminal Pickup on Most Large Items
Most large items we sell, including appliances, solar kits, and other freight-shipped products, include free shipping to your closest warehouse terminal.
Your order will be delivered to the nearest terminal based on your location, where you can pick it up at your convenience.
Need it delivered to your home or cabin? We can set that up for you. There is a small additional fee for residential delivery.
Remote and Hard-to-Reach Locations
If you live in a remote area or outside standard freight zones, please contact us before placing your order.
Some rural locations may require additional charges or special delivery arrangements. We'll confirm everything with our freight partner before shipping.
Local Pickup Options Across Canada
We work with warehouse terminals in every province, so many of our products can be picked up locally to save on shipping costs.
Not all items are eligible, so if you're unsure at checkout, give us a call or send us an email and we'll confirm the best option for your area.
Shipping Times and Order Processing
Orders are typically processed within 1 to 3 business days from the time of purchase, excluding holidays and weekends.
Shipping times will vary depending on the product and your location. On average:
- Ontario and Quebec: 2 to 5 business days
- Western Canada: 4 to 7 business days
- Atlantic provinces: 4 to 8 business days
- Northern or remote areas: Contact us to confirm
We will provide tracking details when available once your order has shipped.
Receiving Freight Shipments
For large freight deliveries, you will receive a call from the carrier or your nearest terminal when your order is ready for pickup or delivery.
Important: Always inspect your shipment before signing any paperwork.
If the box or pallet is damaged:
- Do not sign the Bill of Lading (BOL) as "received in good condition"
- Instead, note the damage clearly on the BOL
- Or refuse the shipment if damage is significant
If no damage is recorded and the shipment is accepted, the freight carrier will consider it delivered in perfect condition. In that case, we cannot issue a refund or replacement. This is a strict freight carrier policy and applies to all deliveries.
Damaged or Missing Items
If there’s an issue with your shipment (whether it’s damage, missing parts, or anything unusual) please contact us within 48 hours of receiving the item. Be sure to include photos whenever possible, as these are often required to file a freight claim on your behalf. If the item was shipped to a terminal, it must be picked up within 48 hours or a $45/day storage fee will apply.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.







