Stoves and firewood|7–9 days · free from £350

Ductable pellet stove - EXTRAFLAME Teorema Plus AD 12 kW

Brand EXTRAFLAME Made in Italy Programmable - Eco-stop (Stand By) Not waterproof: Zone 1 Flamme Verte 7* Delivery time: 7 to 9 working days

Price incl. VATNew productsConsumer Rights Act 2015

£4,535.99 Was £4,535.99. £1,814.99 Now £1,814.99. Clearance −60%
Almost sold outAvailable: 5
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Estimated delivery

Home delivery · 7 to 9 business days · free from £350 (otherwise £35.99)

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A technical question ?Customer service replies within 48 h · email Tue–SatTue–Sat
Returns within 45 daysRefund after receipt45 days

Sold and shipped by Perth Stove Centre Ltd

Perth Stove Centre Ltd
4.8/5(1,389 reviews)

The Teorema Plus AD ducted ventilated pellet stove from the brand EXTRAFLAME can heat a house up to 344 m³. Equipped with the modulation system, this inexpensive pellet stove operates continuously to avoid restarts.

This ducted stove allows heating one or more rooms beyond where it is installed to benefit the entire home. This model also has a Comfort function on its integrated ventilation, which reduces the speed of the device's fan to create less noise.

Information on the Ducted Ventilated Pellet Stove - EXTRAFLAME Teorema Plus AD 12 kW

  • Enameled steel coating
  • Ceramic covering
  • Cast iron hearth and firebox
  • Cast iron firebox door
  • Wide view of the flame
  • Ergonomic handle
  • Safety thermostat
  • Weekly programmer
  • Automatic restart after power failure
  • Front ventilation with Comfort function
  • Double ducting
  • 2 ducts with dedicated motors up to 8 meters reach, can be deactivated
  • Smoke outlet: Top / Rear
  • Remote control: OPTION
  • WIFI module: OPTION

Technical specifications of the ducted ventilated pellet stove - EXTRAFLAME Teorema Plus AD 12 kW

  • Nominal power: Pmin 3.8 / Pmax 12 kW
  • Burner power: Pmin 3.8 / Pmax 13 kW
  • Efficiency: min 93 / max 94 %
  • Consumption: from 0.9 to 2.6 kg/h
  • Dimensions: W 525 x H 1080 x D 652 mm
  • Weight: 172 kg
  • Heating volume: 344 m3
  • Smoke outlet diameter: 80 mm
  • Air intake diameter: 50 mm
  • Tank capacity: 27 kg
  • Energy class: A+

Explanatory diagram of the ductable ventilated pellet stove - EXTRAFLAME Teorema Plus AD 12 kW

Operating mode of the ductable ventilated pellet stove - EXTRAFLAME Teorema Plus AD 12 kW

  • The Eco-Stop (StandBy) system which allows the pellet stove to turn off once the desired temperature is reached and restart when it decreases.
  • The Modulation system which allows the pellet stove to operate continuously to avoid restarts, when the requested temperature is reached it will automatically adjust to reduce its power to a minimum while maintaining the temperature.
  • The Programmable system allowing to start and stop theStove at a specific time of the day.

You should know that all modes can work together, at the same time.

The different systems of the ducted ventilated pellet stove - EXTRAFLAME Teorema Plus AD

About the manufacturer: With cutting-edge pellet stoves, the Italian brand Extraflame is the market leader. Established in 50 countries around the world, the company continues to grow and increase its market share. It stands out for its constant research to innovate its products as well as for reliability and quality.

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Technical Specifications
Not waterproofZone 1
Smoke evacuationTop / Rear
Remote controlOPTION
WIFI moduleOPTION
Rated powerPmin 3.8 / Pmax 12 kW
Burned powerPmin 3.8 / Pmax 13 kW
Efficiencymin 93 / max 94 %
Consumptionfrom 0.9 to 2.6 kg/h
DimensionsW 525 x H 1080 x D 652 mm
Weight172 kg
Heating volume344 m3
Smoke outlet diameter80 mm
Air intake diameter50 mm
Tank capacity27 kg
Energy classA+
BrandEXTRAFLAME
Reference001287551
EAN8008269008395

Additional information

Room-vented

Zone 1

Flue outlet

Top / Rear

Remote control

OPTION

Wi-Fi module

OPTION

Rated output

Pmin 3.8 / Pmax 12 kW

Firebox output

Pmin 3.8 / Pmax 13 kW

Efficiency

min 93 / max 94 %

Consumption

de 0.9 a 2.6 kg/h

Dimensions

L 525 x H 1080 x P 652 mm

Weight

172 kg

Heated volume

344 m3

Flue outlet diameter

80 mm

Air intake diameter

50 mm

Hopper capacity

27 kg

Energy class

A+

Brand

EXTRAFLAME

Reference

001287551

EAN

8008269008395

Delivery and shipping

Order preparation and tracking at The Stove Centre

Delivery and tracking

Orders leave our Perth warehouse for the UK address on your order. Heavy appliances and fuel go on a pallet and stop at kerbside (or the closest firm ground the lorry can reach).

  • Preparation: usually within 24 to 48 working hours after payment.
  • Transit: about 7 to 9 working days after the carrier collects, depending on region and stock. Weekends and bank holidays do not count.
  • Shipping costs: appliances £35.99 incl. VAT, or free from £350 of appliances. Firewood and pellets use pallet rates and are never free. Delivery policy.
  • Tracking: emailed when the carrier takes the goods.

Returns and refunds

  • Cooling-off: 14 days under UK distance-selling rules. We also take unused, resaleable returns up to 45 days. Details on the Returns page.
  • Refund: started after we receive and check the return.

Frequently asked questions about this product

Power cuts, noise, pellets, installation, and delivery—what buyers usually ask before ordering a pellet stove.

Do you install this stove?

We do not install stoves or flue systems ourselves. Perth Stove Centre Ltd supplies the appliance and arranges carriage to your address. A qualified installer registered with HETAS (or an equivalent competent-person scheme) must fit the stove, connect the flue, and certify the work against Building Regulations Part J where that applies in your area.

We can confirm external dimensions, shipping weight, and the nominal heat output from the manufacturer datasheet so your fitter can check room size and liner diameter before you commit. Smoke Control Area authorisation, planning constraints, and grants that need an installer's invoice sit outside this online sale. Most buyers order the stove here and book the fitter once a delivery week is known.

How does stove delivery work at home?

Orders on this site leave our UK warehouse for the delivery address you enter at checkout. Deliveries outside the United Kingdom need an email agreement before payment, because carrier rules differ. Palletised stoves and inserts are handed over at kerbside or the nearest firm ground the HGV can reach. The driver does not carry units upstairs, through narrow hallways, or across soft ground without prior arrangement.

Before you pay, compare the pallet weight and crate size on this page with your doorway, path, and any steps. If access is tight, tell us when you order. When the goods arrive, inspect the packaging while the driver is still there. If the crate is crushed, torn, or clearly mishandled, write dated reservations on the delivery note (not a vague "subject to unpacking" line), take photographs, and email [email protected] within 48 hours with your order number so we can open a carrier claim.

Who sells and ships this product?

The seller is Perth Stove Centre Ltd, a company registered in Perth, Perth and Kinross, Scotland. We trade as a specialist hearth and solid-fuel retailer: we hold stock, prepare orders, and ship the reference shown on this page. We are not a marketplace listing other people's inventory. Registered office, company number, and contractual terms are in our legal notice.

You buy on thestovecentre.com, pay by card before dispatch, and we deliver to the mainland UK address on your order confirmation. No walk-in counter, no depot collection, and no cash or card payment to the driver. Sizing, lead times, or access questions before checkout: [email protected].

Is the product new?

What you see here is normally current manufacturer stock, supplied new and in the maker's factory packaging when the factory still provides one. Ex-display, end-of-line, or refurbished lines are uncommon on this catalogue; when they do appear, the product page states that in plain words in the description.

Your statutory rights under the Consumer Rights Act 2015 apply if the goods arrive faulty or not as described. Keep the email confirmation and invoice. Where the manufacturer publishes a warranty for this reference, that warranty sits alongside for eligible parts under the maker's own registration rules and time limits.

How do you explain the displayed price?

The catalogue mixes stoves, inserts, flue parts, and accessories from manufacturer end-of-line batches and scheduled stock rotations. The goods stay new; when the factory ships retail packaging, that is what arrives on the pallet.

Carriage for qualifying appliances is £35.99 including VAT, or free when the appliance subtotal in your basket reaches £350. Kiln-dried firewood, pellets, and other fuel lines never count toward that threshold. Checkout shows the exact shipping line before you pay. No shop pickup, and nothing is settled with the carrier at the door.

Does a pellet stove need electricity, and what happens in a power cut?

Yes. Ignition, the auger that feeds pellets, and the combustion or convection fans all need mains power. When the supply drops, the stove shuts down; it will not keep heating like a simple wood stove.

If winter blackouts are common where you live, plan a suitable UPS or generator sized for the stove's stated draw, or keep a wood appliance as backup. We sell the stove; we do not supply backup power kits unless listed as a separate accessory on the site.

How noisy is a pellet stove day to day?

You will hear the auger and at least one fan. Convection (natural draft) models stay quieter than forced-air designs, but none are silent. Noise rises when the stove is pushing hard to reach set temperature and drops once it settles into a lower burn.

If quiet evenings matter, read the datasheet dB figure where the maker publishes one, and prefer convection over ducted forced air. Living with a sample in a showroom is ideal; online, treat "whisper quiet" marketing with caution.

What pellets should I use, and how often do I refill?

Stick to dry ENplus A1 (or the grade named in the manual). Damp pellets swell, jam the auger, and can wreck the feed motor. Store bags indoors off concrete, sealed, away from rain and garage damp.

Hopper size on the page tells you how long a fill lasts at a given output. A typical 15 kg bag is a full hopper on many room heaters; at high burn that may be under a day, at gentle heat a couple of days. Ash still needs emptying on a regular schedule even when the glass looks clean.

6 reviews for Ductable pellet stove - EXTRAFLAME Teorema Plus AD 12 kW

  1. Lucy S. –

    Burns cleanly on ENplus A1 bags. Hopper fill lasts through a workday on eco.

  2. Sarah M. –

    Missed the side clearance on the product page. Had to move a cupboard. Our mistake.

  3. Peter S. –

    Support answered by email the same day about flue diameter. Goods only — we used a local fitter.

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