5kW Wood Burning Stove — TermaTech TT30G Classic Three-Sided Glass Log Burner
- England & Wales — your installer signs the work off.
- Scotland & Northern Ireland — it also needs council approval. We'll tell you what to apply for.
Description
The TermaTech TT30G Classic is a Danish wood-burning stove rated at 5 kW, with an operating range of 3–7 kW and 81% efficiency. Glass on three sides lets you watch the fire from across the room, not just head-on. It delivers on a pallet from TermaTech's UK importer in Suffolk.
The door and combustion chamber are cast iron, and the door closes on two magnets. An airwash system keeps the glass clear, one handle controls the air, and there is an ash drawer underneath. It is a convection stove, the flue connects from the top or the rear, and an external air supply can be connected. A+ energy rated.
What arrives, and how
- OrderYour order goes to TermaTech's UK importer in Suffolk. We confirm stock and agree a delivery date with you by phone or email within one working day.
- DeliveryOn a pallet, kerbside — the driver brings it as close as level, solid ground allows. About 108 kg, so plan for two people. Mainland England and Wales as standard; for the Scottish Highlands, Northern Ireland and the islands, ask us before ordering.
- InstallYour HETAS installer fits the flue, hearth and stove, commissions it and issues the certificate. Typically a day.
- GuaranteeTermaTech's guarantee of up to 5 years, registered with the manufacturer per their terms.
Specifications published by TermaTech (termatech.com, TT30 series technical specifications) and its UK importer Specflue (item 69TT30BGC), read 7 October 2026. Room sizing is the trade rule of thumb (room volume ÷ 14) and is a guide, not a calculation.
Not sure if this is the right size for your room? Read our guide to choosing a log burner — sizing, smoke control areas and what installation actually costs.
Will it heat my room?
- 5.0 kWNominal heat output
- 70 m³Suits roughly this room
- 81.0%Efficiency
In plain terms: a 5 kW stove suits a room of about 28 m² with a normal 2.5 m ceiling — roughly 5.3 m × 5.3 m. The trade rule of thumb is room volume in cubic metres divided by 14. It is a guide, not a calculation: insulation, glazing and how open the room is all move it, and your installer will confirm. Oversizing is the common mistake — a stove run too low tars up the glass and the flue. TermaTech rates it at 3–7 kW, so it turns down well for a smaller room.
Rule of thumb: about 1 kW for every 14 m³. A well-insulated room needs less, an old draughty one more.
Can I install this where I live?
Three questions, answered before you buy
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01
Do you live in a smoke control area?
Most UK cities are one, and burning wood there is legal only in a DEFRA-exempt appliance. The manufacturer does not publish an exemption for this model, so we do not claim one. If you are in a smoke control area, confirm with your installer before ordering.
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02
Do you have a chimney, or room for a twin-wall flue?
An existing chimney usually needs a stainless liner. No chimney is not a blocker — a twin-wall system can be run through a wall or roof. Either way it is the installer's call.
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03
Who signs it off?
A HETAS-registered installer self-certifies and issues the certificate. Any other route means notifying building control before work starts. You need that paperwork when you sell the house.
What a compliant install looks like
- Flue liner — a stainless liner up the chimney. Without a chimney, a twin-wall system runs up a wall or through the roof.
- Register plate — closes off the old chimney opening around the liner, so heat and debris stay where they should.
- Hearth — non-combustible, sized to Building Regulations Document J and extending in front of the door.
- Carbon monoxide alarm — required in the same room. Your installer fits and tests it.
- Clearance to combustibles — as specified by the manufacturer for this model.
Illustrative only — your installer works to the manufacturer instructions and Building Regulations Document J.
Specification
Dimensions & build
| Height | 1015 mm (without adjusting feet) |
| Width | 457 mm |
| Depth | 367 mm |
| Weight | 108 kg |
| Flue outlet | 150 mm, top or rear |
| Combustion chamber (W × D) | 320 × 236 mm |
Performance
| Nominal output | 5 kW |
| Operating range | 3–7 kW |
| Efficiency | 81% |
| Energy rating | A+ |
| Fuel | Wood only |
| Smoke control areas | With TermaTech's Defra kit (sold separately) |
| Suits room volume | approx. 70 m³ |
| Air supply | External air connection possible |
| Guarantee | Up to 5 years (TermaTech) |
In the box, and what else you need
Included
- TermaTech TT30G Classic stove body, assembled
- Single air control handle
- Ash drawer
- Manufacturer's manual and guarantee documentation
You'll also need
- Flue liner or twin-wall system — sized to the 150 mm outlet
- A compliant hearth — non-combustible, to Building Regulations Document J
- Register plate and closure plate for a chimney installation
- A carbon monoxide alarm in the same room — a Document J requirement
- A HETAS-registered installer, or building-control notification
- For a smoke control area: TermaTech's Defra kit (sold separately)
Your installer will size and supply most of this. Ask us and we will quote the liner kit with the stove.
Questions people ask before they buy
Wood burning stoves need a flue, a hearth and an installer. These are the questions people actually ask before ordering one — answered straight, including the ones that might stop the sale.
I live in a city — can I legally burn wood?
Yes, if the stove is a DEFRA-exempt appliance — the certification block on this page says whether this model is. Most UK cities are smoke control areas, where burning wood in a non-exempt stove is an offence. Check your postcode with your council.
Do I need a chimney?
No. An existing chimney is usually lined with a stainless flexible liner. Without one, a twin-wall insulated flue can be run up an outside wall or through the roof. Your installer will advise which suits the property.
Can I fit it myself?
Legally you may, but the installation must then be notified to building control and inspected. Using a HETAS-registered installer avoids that — they self-certify and issue the certificate you'll need when selling the house. It also protects the guarantee.
What does delivery actually involve?
The stove ships on a pallet on a two-day service to mainland England and Wales. The courier calls to agree a weekday, so someone needs to be in. It is a kerbside delivery and stoves are heavy, so arrange help to move it. For the Scottish Highlands, Northern Ireland and the islands, contact us for a quote before ordering.
Wood only or multi-fuel — which should I choose?
Wood only if you'll burn logs, which is what most people do and what suits these stoves best. Multi-fuel adds a grate and ashpan for smokeless fuel. In a smoke control area, only approved smokeless fuels — or wood in an exempt appliance — are permitted.
How long before it’s fitted?
The stove leaves the manufacturer the same working day if you order before 11am, and delivers on a two-day service. Installer lead times are the longer part — book that first, especially between September and December.
Something not covered here? Message us before you order. If it is a question only the manufacturer can answer, we will ask them and come back to you.
See it in real life
Photos from the manufacturer
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