Nestor Martin Harmony 33 Wood Burning Stove
The Nestor Martin Harmony 33 Wood Burning Stove combines classic cast iron styling with advanced combustion technology to create a premium heating solution with outstanding performance and timeless appeal. Inspired by traditional stove design and crafted from high-quality cast iron and steel, it reflects over 170 years of stove-making expertise while meeting the needs of modern homes.
The Harmony 33 burns kiln-dried or well-seasoned wood exclusively, delivering an efficient, clean-burning fire with an impressive balance of warmth, efficiency, and ease of use. Its generous heating capability and elegant appearance make it ideal for period properties, contemporary interiors, and open-plan living spaces where the stove can become a natural focal point.
Traditional Craftsmanship with Modern Technology
The Harmony 33 demonstrates Nestor Martin’s long-standing reputation for craftsmanship by combining robust cast iron construction with carefully engineered steel components. This combination provides strength, durability, and dependable performance for years of use.
Nestor Martin designed every detail to improve both performance and user experience. The stove comes with a classic brass handle as standard, while optional black or nickel handles allow you to customise the finish to suit your interior style.
Its timeless appearance allows it to complement a wide range of fireplace settings, from traditional chimney breasts to contemporary feature walls.
Advanced Combustion for Cleaner, More Efficient Heating
The Harmony 33 combines traditional styling with innovative technology that improves combustion efficiency and heat delivery.
Nestor Martin’s ZR Combustion Technology helps create a cleaner and more efficient burn, while the Plexus Air Control system gives you precise control over the fire for responsive flame management and improved performance throughout the burn cycle.
The integrated convection system circulates warm air more effectively around the room, creating a comfortable and consistent heating experience. An infrared glass panel enhances radiant heat while maintaining a clear view of the flames, and the built-in air wash system directs airflow across the glass to help reduce soot build-up and minimise cleaning.
With an efficiency rating of 82%, the Harmony 33 makes excellent use of every log while meeting the latest Ecodesign requirements for modern wood-burning appliances.
Nestor Martin Harmony 33 Wood Burning Stove Flexible Installation Options
Nestor Martin designed the Harmony 33 to provide greater installation flexibility without compromising safety or performance.
A rear heat shield supports easier installation planning, while an optional closed combustion connection allows the stove to work with homes that require an external air supply. The stove also meets Smoke Control Area approval requirements, making it a practical choice for homeowners across many parts of the UK.
The Harmony 33 measures 649mm high, 649mm wide, and 370mm deep, giving it a substantial presence without overwhelming the room. It features a 150mm flue outlet, accepts logs up to 400mm long, and can sit on a glass floor plate where suitable.
If you’re planning a new installation, understanding the wood-burning stove installation process can help you achieve the correct positioning, flue design, and clearances. We also recommend professional stove installation to maximise safety and long-term performance.
Nestor Martin Harmony 33 Wood Burning Stove Powerful Heating for Larger Living Spaces
The Harmony 33 delivers a nominal heat output of 5.2kW, with an operating range from 5kW to 10kW. This flexibility allows the stove to respond effectively to different heating requirements throughout the day.
It can heat spaces of up to 180m³, making it well suited to larger living rooms, open-plan layouts, and family homes that need dependable warmth during colder months. Efficient combustion, convection heating, and responsive air control work together to maintain comfortable temperatures while using fuel effectively.
Built for Lasting Performance
The Nestor Martin Harmony 33 offers more than traditional wood-burning stove styling. It combines heritage craftsmanship with innovative combustion technology to deliver efficient heating, simple operation, and enduring design.
From its premium cast iron construction to its advanced heating systems, every element supports years of reliable performance while creating the warmth and atmosphere that only a real wood fire can provide.
To find out more about what a professional installation involves, visit our installation process page. For full technical documentation directly from the manufacturer, visit the official Nestor Martin product pages for the Nestor Martin Harmony 33 Wood Burning Stove.
Nestor Martin Harmony 33 Wood Burning Stove — Technical Specifications
Core Specifications
| Specification | Detail |
|---|---|
| Brand | Nestor Martin |
| Series | Harmony |
| Model | Harmony 33 |
| Category | Wood Burning Stove |
| Fuel | Wood |
| Construction | Solid Cast Iron & Steel |
| Combustion Technology | ZR Combustion Technology |
| Air Control | Plexus Air Control |
| Convection System | Yes |
| Air Wash System | Yes |
| Infrared Glass (IR Glass) | Yes |
| Rear Heat Shield | Yes |
| Standard Handle | Brass |
| Optional Handle Finishes | Black or Nickel |
| Nominal Heat Output | 5.2 kW |
| Heat Output Range | 5–10 kW |
| Efficiency | 82% |
| Maximum Log Length | 400 mm |
| Flue Outlet Size | 150 mm |
| Optional Closed Combustion | Yes |
| Smoke Control Approved | Yes |
| Suitable for Glass Floor Plate | Yes |
| Recommended Heat Area | Up to 180 m³ |
| Standard | EN 13240 |
| Dimensions | See Dimensional Download Below |
Dimensions
| Measurement | Value |
|---|---|
| Height | 649 mm |
| Width | 649 mm |
| Depth | 370 mm |
| Height to Centre of Rear Flue Outlet | 582 mm |
| Distance from Back of Stove to Centre of Top Flue Outlet | 116 mm |
Weight
| Specification | Value |
|---|---|
| Weight | 143 kg |
Emissions & Clearances
| Specification | Value |
|---|---|
| CO Emissions (@13% O₂) | 0.10% |
| Particulate Emissions (@13% O₂) | 11 mg/m³ |
| Minimum Distance to Combustibles (Rear) | 400 mm |
| Minimum Distance to Combustibles (Sides) | 300 mm |
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