The Next Generation of Wood Burning  Boilers

Presenting Crown Royal Stoves,

Pristine Gasification Series

Outdoor Wood Furnace



Energy efficient, using readily available, renewable resources, makes Crown Royal Stoves,Outdoor Wood Furnaces, the number one choice and central boiler solution for many consumers.

Also known as outdoor boilers, stoves, or hydronic heaters, our units are one of the least expensive ways to heat in the winter months.

What is biomass?


Biomass is organic material derived from plants and animals. Biomass energy is, therefore, produced by burning these biological materials to provide a renewable and sustainable source of fuel. Of all the biomass material, wood fuel still remains the most commonly used form in biomass boilers.


What are the advantages of a biomass boiler?


Whilst biomass heating systems will cost more than the equivalent fossil fuel boiler, there are significant financial benefits by opting for biomass with a typical installation seeing a long term return on investment of around 20% for 20 years.The main driving force behind the success of biomass boiler installations in recent years has been the Renewable Heat Incentive (RHI).

This is a government initiated scheme that was set up to encourage the use of renewable heat technologies among home owners, communities and businesses by providing financial incentives.

The scheme pays participants each quarter for every kWh of heat generated and used over the past 3 months, with the commercial scheme lasting 20 years and domestic 7 years.



As the capital expenditure on commercial projects is typically paid off in around 5 years, this leaves a further 15 years of RHI payments for owners to benefit from.

The payments are index linked as well, so the rate per kWh increases each year in line with the consumer price index. Commercial biomass boiler systems are capable of burning a range of fuels such as wood chip, wood pellet, logs, grains, straw and miscanthus.

issions by replacing a fossil fuel boiler with a biomass boiler.



By switching to a biomass boiler from a fossil fuel source such as oil, you could expect to see fuel savings from anywhere between 30% to 50%, or even up to 80% if biomass is replacing electric for heating.

Further advantages are that many businesses can burn by-products produced on site, such as pallets and wood off-cut. This not only provides some businesses free fuel, but also removes disposal costs associated with waste removal from site. Along with the financial benefits you can also play your part in reducing carbon emissions by replacing a fossil fuel boiler with a biomass boiler.

crown royal stoves

The Greener WaY TO HEAT

Protecting the environment

We know that protecting the environment to safeguard and create a healthier planet for your family’s future is important to you.

It’s important to us all here at Greentech as well .

Dramatically reduce emmisions

That’s why Crown Royal Stoves, Outdoor Wood Furnaces, Pristine Gasification Series, has been designed to achieve the highest efficiency ratings possible, dramatically reduce emissions with the aid of an advanced air delivery system, reducing your carbon footprint and exceeding EPA standards.

Burn a variety of renewable resources

A number of our outdoor furnace models are multi-fuel enabled, designed to burn a variety of renewable resources, that are readily available, allowing you to heat in a sustainable, energy efficient manner.

Depending on the furnace model you choose, you’ll be able to burn wood/wood chips, wood pellets, & more.

Our outdoor furnaces are non pressurized systems, designed to be located virtually next to your fuel storage, keeping the mess outside.

For the best corrosion resistance and heat transfer possible, all of our boiler’s fireboxes and outer drums are constructed from Domestic 409 Titanium Enhanced Stainless Steel.

Each outdoor furnace has been designed, and thoroughly tested, through years of research & development, to consume 30%-50% less fuel than the competition.

Almost any existing heating system on the market can be converted to heat with Crown Royal Stoves, Outdoor Wood Furnaces. Heating applications include Residential Homes, Pool / Hot Tubs, Domestic Hot Water, Radiant In-Floor Heating, Commercial Buildings, Greenhouses, Garages & Workshops, Barns & Agricultural Buildings.

Cleaner, Safer Outdoor Furnaces for Your Home


Take it from us, We know how to heat!

Provide your family with the increased convenience and safety that come with an outdoor wood furnace. Along with enjoying outstanding energy efficiency and lower heating costs, Crown Royal Stoves outdoor furnaces will allow you to benefit from:


  • no mess or odor in the house from heating fuels
  • no carbon monoxide caused by natural gas
  • no fire hazard from an indoor furnace / boiler system

Modern Outdoor Wood Furnace



Rigidly tested for efficiency & reliabilty

Located in International Falls, Minnesota, “The Icebox of the Nation”, where temperatures plummet below -40° during the winter months, Crown Royal Stoves outdoor wood furnaces are built at Greentech Manufacturing Inc. and have been rigidly tested to push the limits of what is possible.

This allows us to produce the most efficient & reliable outdoor furnaces on the market, backed by our industry leading 20 Year Limited Warranty.

Get in Touch



Devon EX16 8DX



07724 763544


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