Opus Harmony 7kW Wood Burning Stove
D, bottom door
£2,220.00
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Opus
Is it right for you?
- Room size: one room of up to about 41 m² with a 2.4m ceiling (rule of thumb). Check your room
- Chimney: works with a lined chimney, or a twin-wall flue if you don't have one.
- Fuel: dry logs only.
- Fitting: must be fitted by a HETAS registered installer. Find one by postcode
Add these with your stove
Nothing is ticked for you. Tick what you need and it goes in the basket with the stove. Your installer will confirm the flue parts.
Your selection
- Style
- D, bottom door
- Dimensions (H x W x D)
- 1089 x 598 x 437mm
- Flue
- 150mm, top or rear outlet (rear flue centre 926mm high; top flue centre 172mm from back)
Free delivery to England and WalesUsually 3 to 10 working days. The courier usually contacts you to book a day. Scotland and Northern Ireland charges are shown at checkout.
- 30 days to change your mind
- Manufacturer's UK warranty
- UK suppliers
- 7kWHeat output
- Wood BurningFuel
- Ecodesign2022 compliant
- 80%Efficiency
The Opus Harmony is a 7kW wood burning stove that runs at 80% efficiency and is Ecodesign ready, with a welded steel body, a cast iron grate and a 150mm flue that can leave from the top or the rear. Every version is 598mm wide and 437mm deep. Choose from five styles: D with a bottom door, GD with a glass door and bottom door, LS with an open log store, GLS with a glass door and log store, or PR on a rotating pedestal.
Why choose the Opus Harmony
- 7kW nominal output at 80% efficiency; Ecodesign ready.
- Welded steel body with a cast iron grate.
- 150mm flue from the top or rear and a 100mm external air connection.
- Can stand on a 12mm hearth.
- D and GD versions have a bottom door below the fire chamber; GD and GLS add a glass door on the fire.
- LS and GLS versions have a log store in the base, so a supply of logs sits ready beneath the fire.
- PR version sits on a pedestal and can be turned by up to 90 degrees (only when cold) to face different parts of the room.
What you'll need
Everything to get this stove lit
A stove on its own isn't enough. Here's what comes in the box, what else you'll need, and what your installer brings.
In the box
- The stove and the manufacturer's installation and user manual
You'll also need
- A carbon monoxide alarm. Required by law in the room with the stove.
- Stove pipe to connect it to the flue. Your installer will tell you the length.
- A hearth for it to stand on, if you don't already have one.
- A chimney liner or twin-wall flue. Your installer supplies this.
Added. It goes in your basket with the stove when you press Add to basket.
Your installer brings
A stainless steel liner sized to the stove and a register plate to seal the chimney, usually after the chimney has been swept and checked.
A twin-wall insulated flue, taken up through the ceiling and roof or up an outside wall.
Fitting, testing and a certificate showing it meets Building Regulations. Keep it for your home insurer and for when you sell.
Ask for one quote that covers the survey, flue, fitting and certificate. Using someone who isn't HETAS registered? Your local building control must approve the work before you use the stove.
Find a HETAS installer by postcode Got your installer's parts list? Email it and we'll price what we sell How flues and installation work
How buying a stove works
- Check it fitsUse our size calculator, or email us a photo of your fireplace and the room size and we'll suggest stoves that suit.
- Book a HETAS installerThey survey the chimney, quote for the flue and fitting, and tell you which parts to order.
- We deliverFree to England and Wales, usually within 3 to 10 working days. It weighs 123kg, so have help and a sack truck ready. Book the fitting date once it has arrived.
- Your installer fits itThey fit the stove and CO alarm, test it and register it. You get a certificate to keep.
The numbers, in plain English
- 7kW heat output
- Enough for a room of about 41 m² with a 2.4m ceiling (rule of thumb)
- 80% efficient
- How much of the fuel's heat it turns into useful heat
- 150mm flue
- The flue size your installer needs
- 33cm logs
- The longest log it takes
- 123kg
- Heavy: it needs at least two people and a sack truck to move
Full specifications, clearances and the manual are further down the page.
About this product
Will it suit your space?
As a rule of thumb, an average room needs roughly 1kW for every 14 cubic metres, so its 7kW suits about 98 cubic metres (around 41 square metres with a 2.4m ceiling). Older, draughty or high-ceilinged rooms need more, and a heat-loss check by your installer gives the right answer.
Every Harmony is 598mm wide and 437mm deep and weighs 128kg; the PR stands lower than the other versions, so check the sizes table below for the height and flue position of each. It needs 420mm clearance to combustibles at the sides and 180mm at the rear.
Sizes and options
| Style | Dimensions (H x W x D) | Flue |
|---|---|---|
| D, bottom door | 1089 x 598 x 437mm | 150mm, top or rear outlet (rear flue centre 926mm high; top flue centre 172mm from back) |
| GD, glass door | 1089 x 598 x 437mm | 150mm, top or rear outlet (rear flue centre 926mm high; top flue centre 172mm from back) |
| LS, open log store | 1089 x 598 x 437mm | 150mm, top or rear outlet (rear flue centre 926mm high; top flue centre 172mm from back) |
| GLS, glass door and log store | 1089 x 598 x 437mm | 150mm, top or rear outlet (rear flue centre 926mm high; top flue centre 172mm from back) |
| PR, rotating pedestal | 957 x 598 x 437mm | 150mm, top or rear outlet (rear flue centre 796mm high; top flue centre 218mm from back) |
Specifications
| Brand | Opus |
|---|---|
| Heat output | 7kW nominal |
| Efficiency | 80% |
| Fuel | Wood only |
| Weight | 128kg |
| Material | Welded steel body, cast iron grate |
| Maximum log length | 330mm |
| Clearance to combustibles | 420mm sides, 180mm rear |
| Hearth | Can stand on a 12mm hearth |
| External air | 100mm connection |
| Ecodesign | Ecodesign ready |
| Smoke control | Not exempt for smoke control areas |
Installation and safety
It must be installed by a HETAS-registered installer or signed off by Building Control, and a carbon monoxide alarm is required in the room. Follow the clearances and hearth details in the Opus installation manual.
Questions
Can it burn coal or smokeless fuel?
No. Opus and Firepower list the Harmony as a wood burning stove, and the manual rates it on wood only.
Can I use it in a smoke control area?
No. The Harmony is listed as not DEFRA exempt, and there is no SE version on the current Firepower price list.
What do the letters mean?
In Opus's naming, D stands for the bottom door and G for a glass door. The LS has an open log store instead of a bottom door, and the PR sits on a rotating pedestal.
What size logs does it take?
Logs up to 330mm long. It burns wood only.
What flue does it need?
A 150mm flue from the top or rear. It also has a 100mm connection for an external air supply.
Can the stove turn to face the room?
Yes, the PR version. It sits on a pedestal and can be turned by up to 90 degrees, but only when the stove is cold and only where the clearances in the manual are kept, including at least 1350mm in front of the glass.
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Why buy from Glowing Flames?
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Free delivery
Free to England and Wales on orders over £50 (£9.99 below that). Large items come on a pallet and the courier books a day with you.
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Real advice
Not sure it will fit or work with your chimney? Send us a photo and we will check.
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UK warranties
Supplied by the manufacturer or its UK distributor, with the manufacturer’s UK warranty and spares.
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30 days to change your mind
Change your mind up to 30 days after delivery, with no restocking fees and fixed collection prices for large items.