The S31 is crafted by HearthStone’s sister company Nestor Martin, a European leader in home heating technology with over 150 years of experience. The Nestor Martin brand represents warmth, quality, resilience, know-how and tradition. The cast iron S31 oil stove is the result of uncompromising engineering and design.
Style and Quality
Beautiful designs, careful craftsmanship and reliable technology. Nestor Martin is trusted brand with over 150 years of experience designing and engineering top quality cast iron heating products.
Oil burning technology
The heart of our oil stove is the highly efficient burner that optimizes combustion of #1 fuel oil, #2 fuel oil or kerosene.
Easy and consistent heat
This tried and true oil stove is simple to use and will heat reliably even if the power goes out.
Efficiency: 74% HHV
Finish: Matte Black
Fuel: #1 Fuel Oil, #2 Fuel Oil, Kerosene
Heat Output: 7.4 kW / 25,400 BTU/hr
Heats up to: 1,400 sq ft
Max. Fuel Consumption: 960 cc / 0.254 gal/hr
Min. Fuel Consumption: 408 cc / 0.108 gal/hr
Mobile Home Certified: Yes
Model: 800-32WO73, 800-40WO74, 800-45WO73, 800-58WP73, 8013, 8024, 8031, 810-1510, 810-2510, 8171, 8220, 8302, 8303, 8323, 8324, 8325, 8362, 8392, 8411, 8420, 8450, 8492, 8640, 8660, 8680, 8763, 8770, 8S310
Stove Type: Oil
Venting: 4″ Type L DV
Venting Location: Rear, Top (accessory)
Weight: 236 lbs
Top Exit Kit: 5800-993046441
- Side: 11.75″
- Rear: 15″
- Corner: 11.75″
- Top: 24.5″
Floor Protection: The S31 oil stove does not require the use of floor protection.
Certifications for US:
– UL 896-2012 “Standard for Oil-Burning Stoves”
– UL 307A-09 (R2013) “Standard for Liquid Fuel-Burning Heating Appliances for Manufactured Homes and Recreational Vehicles”
Certifications for Canada:
•CSA B140.3-1962 (R2015) “Oil Burning Stoves and Water Heaters”
•CSA B140.10-06 (R2011) “Oil Fired Warm-air Heating Appliances for Mobile Housing and Recreational Vehicles”
Oil Combustion System
This tried and true burner optimizes the mix of preheated combustion air and the oil resulting in an excellent combustion, with a high and consistent efficiency.
Adjust the heat with the simple control knob at the upper back corner of the stove.
The catalyzer increases the temperature of the gases within the stove to encourage complete combustion of the oil. It glows bright orange, letting you know your stove is burning cleanly and efficiently.
Each HearthStone is handcrafted using a combination of precision-made components in cast iron, steel, ceramic, and various other materials. Our commitment to quality and attention to detail ensures that your product will serve you faithfully for years to come.
Using selected raw and recycled material, our iron parts are produced in our foundry in Spain. Our modern casting facility guarantees durable, reliable, high-quality cast iron parts.
High-quality steel components are formed using the most modern processes available to achieve the highest level of fit and finish.