5kWnominal output- DEFRA ExemptSmoke control areas
- EcodesignCleaner-burn standard
- AirwashKeeps the glass clear
- A+ RatedEnergy efficiency
ACR · Wood Burning Stoves
ACR T550 ECO Cassette Stove
Designed to bring the warmth and charm of a real fire to a standard 18-inch fireplace opening, the ACR T550 ECO combines classic proportions with contemporary styling. Available with a choice of elegant three or four-sided frames, it creates a seamless finish that complements both traditional and modern interiors.
- Wide landscape format with a generous view of the fire
- Built-in cassette design for a flush, contemporary finish
- DEFRA exempt with an A+ energy rating
ACR RRP for the appliance. Carl confirms the supplied price, and the full fit is quoted after your home survey.
- HETAS registered
- Free home survey
- No-obligation quote
Key features
- Landscape inset cassette
- 5kW nominal output
- Multifuel grate for wood or smokeless fuels
- Takes logs up to 40cm
Specification
T550 ECO
- Height
- 590mm
- Width
- 620mm
- Depth
- 344mm
- Output range
- 5kW nominal (min 3kW / max 7kW)
- Efficiency
- 75.4% gross, 82.9% net
- Hearth requirement
- Constructional hearth required (hearth temperature above 100 degrees)
- Weight
- 75kg
- Flue diameter
- 125mm
- Smoke exempt
- Yes, DEFRA approved for wood burning in smoke control areas
- Log length
- 40cm
- Energy rating
- A+
- Warranty
- 10 years
What's included in the fit
Every Carl Finnell installation is carried out by a HETAS-registered fitter and agreed on your home survey. A typical fit includes:
- The stove, supplied and sized to your room
- Flue or chimney liner, lined chimney or twin-wall flue
- Hearth and chamber work, finished to suit the room
- Register plate and the right cowl or terminal
- Testing, commissioning and first burn
- HETAS certificate, notified to Building Control
Technical documents
Is it right for you?
Who the ACR T550 ECO Cassette Stove suits best
The T550 ECO is the cassette for the larger 18 inch opening: a wider window, a wider firebox that takes full 40cm logs, and an A+ efficiency rating. It suits period homes with a more generous chimney breast and anyone who found the 16 inch cassettes a size too small for the wall they sit in.
From the survey
Installation notes for the ACR T550 ECO Cassette Stove
Like all cassettes it requires a constructional hearth, which we verify on the survey, and it takes a 125mm flue into a lined chimney. The 620mm width needs the full 18 inch opening; where an existing opening is between sizes we advise whether opening out to suit the T550 or trimming down to the T400 gives the better finished wall.
An honest steer
How it compares with similar models
Over the T400 you gain a wider flame picture, 40cm log capacity and an A+ rating for a higher appliance price. The BG version adds the black glass face at the same price as the standard. Output is the same sensible 5kW across all four cassettes, so the choice is opening size and styling, never heat.
Fitting it locally
Fitting the ACR T550 ECO Cassette Stove in Yorkshire homes
The 18 inch opening suits the larger Victorian and Edwardian fireplaces of Harrogate, Ilkley and the better streets of Leeds and York, where the chimney breast carries a bigger original opening. DEFRA approved for wood burning in the smoke control areas those homes often sit in.
Explore
More wood burning stoves
HETAS Registration Number 2087
HETAS registered
Installed with care, certified with confidence
Carl self-certifies every installation and notifies Building Control on your behalf, so the work is signed off properly and your certificate of compliance is issued for your records.
- HETAS-registered installer
- Certificate of compliance issued
- Meets your home insurance
Common questions
ACR T550 ECO Cassette Stove FAQs
What is the difference between the ACR T550 and T400?
Size. The T550 fits an 18 inch opening with a wider window and takes 40cm logs; the T400 fits a 16 inch opening and takes 25cm logs. Output is 5kW on both, so the right one is the one your opening and wall proportions ask for.
Does the T550 take standard logs?
Yes, up to 40cm, which is the common standard cut, so there is no trimming or special ordering. Its firebox is the practical advantage over the smaller T400.
What hearth does the T550 need?
A constructional hearth, as with all cassette stoves, because hearth temperatures can exceed 100 degrees. We check what your fireplace already has on the free home survey.
Is the T550 efficient?
It is rated A+ at 75.4% gross efficiency and is DEFRA approved for smoke control areas, with the same 10 year ACR warranty as the rest of the cassette range.