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Ottawa Ecosy+ Ottawa 12kw Clean Burn BOILER Multi-Fuel Woodburning Stove  Ecosy+ Ottawa 12kw Clean Burn BOILER Multi-Fuel Woodburning Stove https://www.stoveworlduk.co.uk/image/cache/catalog/stoves/boiler-stoves/ecosy-ottawa-12kw-clean-burn-boiler-multi-fuel-woodburning-stove-485x485.jpg

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About the Stove

Last Chance Notice: This model was manufactured prior to January the 1st 2022 and can still legally be sold and installed in the UK – When this batch has been sold, this model will be discontinued. However, we will continue offering spare parts for years to come. For current Eco Design compliant models, please see attached link. https://www.stoveworlduk.co.uk/eco-design-stoves

This advanced unit has been designed by our UK brand Ecosy+ at great expense and is based on our extremely popular Ottawa 12kw that is admired by many stove installers and well reviewed by the public. In our very bias opinion, we feel this stove is one of the best looking and up to date boiler designs on the market. The integrated steel boiler hugs the fire for maximum heat transfer to the water and the advanced secondary burn system creates a clean and efficient burn by returning the initial smoke produced by the fire. This is a great feature on a boiler that is in constant use as fuel consumption will be reduced. Some of the features on this stove include a huge fully heat resistant glass fronted door that gives an amazing view of the fire and is kept clean with the advanced pre heated airwash system. Those of you who have had fires before will know this feature is very important. The stove is a fully welded construction that includes a 5mm thick body and 10mm thick top. We are so confident of its quality that we offer a 2 year guarantee; something that is not offered on any other boiler stove around this price bracket. We have tried to make this stove modern looking but not too contemporary so that it suits all interiors. Both the door and grate are made from think mineral cast iron and are designed to stand the test of time. (Spare parts are available  for this stove and generally kept in stock at our distribution centre.)

Boiler Spec

Note: Our expertise focusses around the use of the stove itself and associated chimney parts. Technical questions in relation to the plumbing side, may need to be put to a qualified plumber.  Please see all technical information for the boiler itself below.

  • The stove will supply around 7-8kw to the boiler and 4-5kw directly to the room. (  Exact heat output will always depend on the volume and quality of the fuel burnt. )
  • To calculate your heating requirements - An 8kw boiler equates to around 28,000 BTU (1kw = approx 3500 BTU.) - Your radiators will be measured in BTU. To calculate your requirements add up all of the BTU.s of each radiator in the house.
  • The stove includes an additional thermostat that automatically opens and closes an additonal vent on the stove. This probe is linked directly to the boiler and opens when the stove requires extra air and closes if the boiler gets too hot.
  • Only suitable for open vented systems - Not suitable for pressurised systems. 
  • Boiler water capacity - 15 litres 
  • The boiler has 4 x 1" threaded outlets at the rear. 2 are for flow and 2 are for return. Depending on the system, you could diagonally cap off 1 flow and 1 return outlet, if they are not required. 
  • Pressure - 3 bar ( 1bar = 100kpa)

Clean Burn System

The Ottawa has an advanced secondary clean burn system that is controled by a chrome pull lever on the base of the stove. This lever opens and closes a vent that pulls air over the fire, re burning the initial smoke emitted by the stove. This makes the stove a lot more efficient and eco friendly saving you a large amount in fuel costs.

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Stove Features

Heat Output : 12Kw
Pre-heated airwash system: Yes
512 1200.00 In Stock

Ecosy+ Ottawa 12kw Clean Burn BOILER Multi-Fuel Woodburning Stove

  • Brand: Ottawa
  • Product Code: Ecosy+ Ottawa 12kw BOILER
  • Availability: In Stock
  • Price: £1,200.00

  • Ex Tax: £1,000.00

Available Options


12 reviews



About the StoveAbout this Woodburning Stove

Ecosy+ Wood Burning StovesLast Chance Notice: This model was manufactured prior to January the 1st 2022 and can still legally be sold and installed in the UK – When this batch has been sold, this model will be discontinued. However, we will continue offering spare parts for years to come. For current Eco Design compliant models, please see attached link. https://www.stoveworlduk.co.uk/eco-design-stoves

This advanced unit has been designed by our UK brand Ecosy+ at great expense and is based on our extremely popular Ottawa 12kw that is admired by many stove installers and well reviewed by the public. In our very bias opinion, we feel this stove is one of the best looking and up to date boiler designs on the market. The integrated steel boiler hugs the fire for maximum heat transfer to the water and the advanced secondary burn system creates a clean and efficient burn by returning the initial smoke produced by the fire. This is a great feature on a boiler that is in constant use as fuel consumption will be reduced. Some of the features on this stove include a huge fully heat resistant glass fronted door that gives an amazing view of the fire and is kept clean with the advanced pre heated airwash system. Those of you who have had fires before will know this feature is very important. The stove is a fully welded construction that includes a 5mm thick body and 10mm thick top. We are so confident of its quality that we offer a 2 year guarantee; something that is not offered on any other boiler stove around this price bracket. We have tried to make this stove modern looking but not too contemporary so that it suits all interiors. Both the door and grate are made from think mineral cast iron and are designed to stand the test of time. (Spare parts are available  for this stove and generally kept in stock at our distribution centre.)

Boiler SpecAbout this Woodburning Stove

Note: Our expertise focusses around the use of the stove itself and associated chimney parts. Technical questions in relation to the plumbing side, may need to be put to a qualified plumber.  Please see all technical information for the boiler itself below.

  • The stove will supply around 7-8kw to the boiler and 4-5kw directly to the room. (  Exact heat output will always depend on the volume and quality of the fuel burnt. )
  • To calculate your heating requirements - An 8kw boiler equates to around 28,000 BTU (1kw = approx 3500 BTU.) - Your radiators will be measured in BTU. To calculate your requirements add up all of the BTU.s of each radiator in the house.
  • The stove includes an additional thermostat that automatically opens and closes an additonal vent on the stove. This probe is linked directly to the boiler and opens when the stove requires extra air and closes if the boiler gets too hot.
  • Only suitable for open vented systems - Not suitable for pressurised systems. 
  • Boiler water capacity - 15 litres 
  • The boiler has 4 x 1" threaded outlets at the rear. 2 are for flow and 2 are for return. Depending on the system, you could diagonally cap off 1 flow and 1 return outlet, if they are not required. 
  • Pressure - 3 bar ( 1bar = 100kpa)

Clean Burn SystemClean Burn

The Ottawa has an advanced secondary clean burn system that is controled by a chrome pull lever on the base of the stove. This lever opens and closes a vent that pulls air over the fire, re burning the initial smoke emitted by the stove. This makes the stove a lot more efficient and eco friendly saving you a large amount in fuel costs.

Stove FeaturesWoodburning Stove Features

Heat Output : 12Kw
Pre-heated airwash system: Yes
Outlet : 6" (150mm) top and rear
Overnight burn : Yes, Very efficient and easy to achieve
Heat resistant glass: Yes, German Schott glass
Efficiency : 76%
Multifuel, with ash riddle : Yes
Airwash : Yes
Clean burn : Yes
Steel : Yes
Approvals : EN Approved, CE approved
Guarantee : 2 year
Firebricks : No fire bricks are required with boiler stoves.
Bits and bobs : Ash pan tool, Oven glove, Ash pan, Full manual
Baffle plate : Yes
Spare parts available : Yes
Weight : 135 KG
Glass dimensions : 390mm - 295mm
Internal dimensions : 320mm deep - 490mm wide - 390mm High

  • Option: 1000mm length of matching flue
  • Option: Ceramic glass is not covered under the guarantee for any stove on the market. Ceramic glass is fully heat resistant but will break if struck with a log, or similarly hard object. This glass is expensive, but for a small fee we are offering to guarantee it for a full year. This covers any accidental chips or cracks and photographic evidence will be required. This covers one claim only, not multiple breakages.  
  • Option: Rope kit for servicing 

Stove ConstructionWoodburning Stove Construction

Body - 10mm thick steel top and 5mm thick steel plate sides.
Grate - Includes a virgin ore cast iron ash riddling grate
Fire brick - N/A 

Why Are We So Cheap?Cheap Woodburning Stoves

This is a common question we get asked and understand why people will sometimes wonder how it can be done so cheap. We design a large amount of our products and they come direct from our factory to us. This completely cuts out any middle men. We can stock over 2500 wood burning stoves at any one time and ship direct to the end user with no showrooms. We always suggest prospective buyers take a look at our glowing feedback that currently has over 7000 positive comments on our stoves and stove products.

GuaranteeWoodburning Stove Guarantee

2 year guarantee

(This covers the stoves body and not the internal perishable parts like grates and fire bricks.) Wood burning stove guarantee is activated when the stove is invoiced. 6 digit number on the top of each invoice is the warranty number.

For the stove to be covered it must be installed by a HETAS engineer.

Overnight BurnWoodburning Stove Overnight Burn

The Ecosy+ Ottawa has an excellent overnight burn system. Its air tight door gaskets and manually controlled air flow controls allow you to close the stove right down overnight and wake up to a warm house in the morning. All you will need to do is reopen the air controls, add a little coal or wood and watch the fire roar again.

This video of the Ottawa 12kw was sent to us by Firefly Stoves in Worcester following a successful installation for one of their customers.

Stove Fittings
Fittings Chrome fittings and long handle for easy use and leverage
Baffle Plate Steel baffle plate
Stove Accessories
Accessories Ash pan/oven glove/tool/manual
Stove Features
Burn Length Deep overnight burn
Legs Fixed
Grate Cast iron multi-fuel grate for wood and smokeless coal
Efficiency 75% efficient "Huge saving on bills" Slow Burn (Efficient)
Cleaning Pre heated airwash system
Seals Heat resistant fire rope seals
Stove Dimensions
Height 610mm
Width 580mm
Depth 410mm
Distance from back of stove to centre of top flue outlet 140mm
Distance from floor to centre of rear flue outlet 480mm
Outlets 6" top and rear flue collar included. 150mm
Power 12kw
  • 91.67%
  • 8.33%
  • 0%
  • 0%
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Customer Rating

Based on 12 Review(s)


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