Nestor Martin S31 Oil Stove

S31 Oil Stove

From: $2699* MSRP

The S31 is crafted by HearthStone’s sister company Nestor Martin, a European leader in home heating technology.

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.

Nestor Martin Logo


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.

Nestor Martin S31 Oil Stove


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

Catalytic Efficiency

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.

Nestor Martin S31 oil stove how it works

Our Materials

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.

Cast Iron

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.

Learn more about cast iron

Precision Steel

High-quality steel components are formed using the most modern processes available to achieve the highest level of fit and finish.

& Options

Top Exit Kit: 5800-993046441

Nestor Martin S31 Oil Stove

Installation & Resources

Nestor Martin S31 Oil Stove Owner’s Manual

Download the S31 oil stove manual

Learn More

Nestor Martin S31 Oil Stove Sales Sheet

Download the S31 oil stove sales sheet


Cast Iron

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