Contact the team: / 03301 332 557
Live in AmbienceLive in AmbienceLive in Ambience

EcoSmart Flex 18 Bio Ethanol Fireplace Insert


Tax included. Shipping calculated at checkout.

Perfectly efficient Flex 18 zero clearance, open front, bioethanol fireplace insert by EcoSmart Fire.  The Flex 18 by EcoSmart Fire is our most compact hole in the wall fireplace insert with a robust performance making it ideal for smaller residential homes. The AB3 burner will... Read more

Style: Choose an option

  • Left Corner
  • Right Corner
  • Single Sided
Out of stock

Checkout securely with:

klarnaamerican expressapple paygoogle paymaestromasterpaypalvisa
Due to high demand please use the "ask a question" button below, to enquire about lead times. * Lead times may vary for each product hoursminutes

Perfectly efficient Flex 18 zero clearance, open front, bioethanol fireplace insert by EcoSmart Fire. 

The Flex 18 by EcoSmart Fire is our most compact hole in the wall fireplace insert with a robust performance making it ideal for smaller residential homes. The AB3 burner will provide you with a calming, dancing flame for up to 11 hours and therefore perfect for setting a relaxed atmosphere in your home. The Flex 18  is available as a single sided fireplace or corner fireplace with 2 open sides, both options giving you the perfect view of the flame.
Your Flex bio ethanol fireplace insert comes complete with toughened glass which is designed to stabilise the flame. The integrated windscreen sits flush behind the frame giving the Flex a tidy well-constructed look. This beautiful and modern firebox by EcoSmart Fire provides you with ultimate comfort with your safety in mind.
With virtually, no installation required you can simply fit the flueless fireplace whether you desire safely and securely, ready for use right away. This luxurious model comes in a timeless black finish, with stainless steel burners, and decorative black glass charcoal to complete the look.

Bioethanol Fuel (not included with fireplace)

The e-NRG Bioethanol fuel is clean burning with no smoke, no soot and no ash meaning it's a renewal energy source and environmentally friendly. In comparison to other fuels on the market, the e-NRG bioethanol fuel not only produces the lowest odour but also has the longest burning time, putting your comfort first. This fuel has been tested on all EcoSmart Fire products, which is why we would recommend only the e-NRG brand.

Built to last a lifetime

EcoSmart Fire has built the Flex Fireplace to last a lifetime and to be used both indoors and outdoors. The zinc sealed steel construction has been powder coated with super hi-temp black paint which prevents rusting.

Zero Clearance

The Flex is a true self-contained fireplace with its’ zero clearance construction meaning you can install this almost anywhere. Your Flex fireplace can be framed into wood or metal studs which gives flexibility for builders, architects, interior designers, landscapers, and homeowners. With the added benefit of not needing a chimney or flue, this fireplace design allows you installation freedom.

Reliable and certified

These models are manufacturer-approved for use with the corresponding BS EN16647 compliant burners. (The Flex 18 is compliant with the AB3 burner.)


  • VOLUME CAPACITY: 2.5 L [0.7 Gallons]
  • HEATS ON AVERAGE: 20m2 [215ft2]
  • MINIMUM ROOM: 40m3 [1413ft3]
  • THERMAL OUTPUT: 5800 BTU/h / 1.7 kW 6.1 MJ/h
  • FUEL EFFICIENCY: 8 - 11h / 2.5 Litres
Flex 18 Single Sided Dimensions:
  • WEIGHT: 25.70kg [56.66lb] 
  • MODEL DIMENSIONS mm [in]: W 578 [22.8] D 365 [14.4] H 807 [31.8]
  • VIEWING AREA mm [in]: W 419 [16.5] D 340 [13.4] H 502 [19.8]
  • MATERIALS: Mild Steel & Toughened Glass
Flex 18 Left/Right Corner Dimensions:
  • WEIGHT: 33kg [72.75lb] 
  • MODEL DIMENSIONS mm [in]: W 519 [20.4] D 365 [14.4] H 807 [31.8]
  • VIEWING AREA mm [in]: W 378 [14.9] D 340 [13.4] H 502 [19.8]
  • MATERIALS: Mild Steel & Toughened Glass

Included with your fireplace:

Lighting Rod
Jerry Can 5L
XL Baffles
Black Glass Charcoal
Fire Lighter
Bottle Adaptor

Add on:

E-NRG Bioethanol x 2 boxes - Additional £130

*Due to high demand please allow 2 weeks for delivery


Left Corner, Right Corner, Single Sided

Thank you for visiting and shopping at Live in Ambience. Following are the terms and conditions that constitute our Shipping Policy.

Domestic Shipping Policy  

We offer FREE UK delivery on orders over £200.

All orders are processed within 1-3 business days. Once your order has been dispatched we will provide you with a tracking number via email, please note orders are not shipped or delivered on weekends or bank holidays. 
*Due to high demand please allow 8-10 weeks for delivery. 
If we are experiencing a high volume of orders, shipments may be delayed. Please allow additional days in transit for delivery. If there will be a significant delay in shipment of your order, we will contact you via email or telephone. In these cases we would usually advise to allow 2-3 weeks.
Deliveries are currently kerbside only for larger items, if this is not ideal please can you kindly contact us before placing your order.

Shipping rates & delivery estimates  

Live in Ambience currently offers fast and free delivery! Free shipping currently applies to addresses within the UK mainland and an additional delivery fee of £25 for non-mainland UK. 

Shipment confirmation & Order tracking

You will receive a Shipment Confirmation email once your order has shipped containing your tracking number(s). The tracking number will be active within 24 hours.

Customs, Duties and Taxes

Live in Ambience is not responsible for any customs and taxes applied to your order. All fees imposed during or after shipping are the responsibility of the customer (tariffs, taxes, etc.)


Live in Ambience is not liable for any products damaged or lost during shipping. If you received your order damaged, please contact us within 48 hours of your order being delivered with clear pictures showing the damage. 

International shipping policy

We currently do not ship outside the UK

Returns Policy

Our Return & Refund Policy provides detailed information about options and procedures for returning your order.  
Not enough items available. Only [max] left.
Shopping cart

Your cart is empty.

Return To Shop

EcoSmart Flex 18 Bio Ethanol Fireplace Insert

Left Corner
Left Corner