EcoSmart Fire Flex 158SS Fireplace Insert - Single Room / Media Wall
FREE UK MAINLAND SHIPPING OVER £500
ENRG Fuel
The Right Fuel for Your EcoSmart Fire
To ensure top performance and safety, e-NRG bioethanol is the only fuel approved for your EcoSmart Fire. Order directly from Instyora for swift home delivery.
Clean, Chimney-Free Heat
e-NRG leaves behind no soot, smoke, or ash. It produces only gentle warmth, water vapour, and trace carbon dioxide, keeping all the heat inside your room without the need for a flue.
Vibrant Golden Flame
Specially formulated to deliver a rich, natural orange flame that easily rivals a traditional wood fire.
Pure and Odourless
Refined using high-grade botanical ingredients to ensure a fresh, clean burn without harsh chemical smells.
Longer Burn Time
Rigorously tested to burn more slowly and efficiently, giving you maximum warmth per bottle.
Built-in Safety
Fitted with an integrated nozzle flame arrester to prevent flashback and make refuelling safe and simple.
EcoSmart Fire Included Accessories
Warranty Information
EcoSmart Warranty
Shipping & Delivery
Delivery Information
We offer free delivery to UK mainland addresses on all
orders over £500. Orders under £500 are delivered for a flat fee of £14.99.
When will my order arrive?
Most orders are delivered within 3-5 working days. Your item is dispatched directly from the manufacturer or their dedicated courier, tracked and handled with care all the way to your door.
Keeping you informed
If an item is made to order or temporarily out of stock,
or during particularly busy periods, delivery may take a little longer. If that happens, we'll contact you personally with an updated delivery date, so you're never left guessing.
Free delivery applies to most UK mainland postcodes. Some remote areas may be excluded. Please contact us before ordering if you're unsure.
EcoSmart Fire Flex 158SS - Single Sided Bioethanol Fireplace Insert / Media Wall
Architectural flames, limitless design freedom
The EcoSmart Fire Flex 158SS brings dramatic scale to your space with an expansive 4,030mm-wide viewing area and a single-sided design that showcases the flame from the front.
Designed for single-room applications, this zero-clearance bioethanol fireplace creates a striking focal point in feature walls, integrated cabinetry and fireplace settings. Choose the uninterrupted all-flame configuration, or opt for BX2 with two decorative boxes for a different architectural expression. Available with stainless steel or black burner finishes.
Key Features
True zero-clearance installation
Self-contained, zero-clearance construction provides exceptional installation freedom and flexibility for builders, architects, interior designers, landscapers and homeowners.
Indoor or outdoor application
Powered by clean-burning e-NRG bioethanol fuel, the Flex 158SS is suitable for indoor or outdoor installation. Bioethanol is a sustainable fuel choice made by fermenting plants such as sugarcane or corn.
Industry-exclusive decorative box
Optional or included box configurations are available for select firebox lengths. Fill the decorative box with a non-combustible accessory, or choose the optional eye-catching log set in a copper finish.
Warmth and atmosphere
The Flex 158SS combines a real bioethanol flame with warmth and a striking architectural presence, without a chimney. Heating performance varies by configuration and installation conditions; see the burner comparison below.
Installation flexibility
No chimney or flue is required. Installation must follow the manufacturer’s instructions, including ventilation and minimum room-volume requirements.
Additional Included accessories
Each Flex includes decorative Black Glass Charcoal and an integrated fire screen that sits flush behind the frame.
Specifications
| Specification | Details |
|---|---|
| Weight | 222 kg [490 lb] |
| Model Dimensions | W 4230 mm [166.5 in] × D 365 mm [14.4 in] × H 807 mm [31.8 in] |
| Viewing Area | W 4030 mm [158.7 in] × D 340 mm [13.4 in] × H 502 mm [19.8 in] |
| Materials | Mild Steel & Toughened Glass |
| Model Colour | Black |
| Burner Colours | Stainless Steel; Black |
Burner Efficiency
| Burner Information | All Flame |
Two Decorative Boxes (BX2) |
|---|---|---|
| Burner Configuration Compatible with this model |
XL1200 x3 | XL900 x3 |
| Volume Capacity How much fuel |
30 L 7.9 gal |
27 L 7.1 gal |
| Thermal Output How much it heats |
45,870 BTU/h 48.4 MJ/h - 13 kW |
45,000 BTU/h 47.48 MJ/h - 13 kW |
| Burn Time How long it lasts |
9-14 h 10 L [2.6 gal] |
8-13 h 9 L [2.4 gal] |
| Fuel Consumption Fuel used per hour |
2.61 L/h 0.69 gal/h |
2.4 L/h 0.63 gal/h |
| Heats on Average How much space it heats |
195 m² 2,099 ft² |
180 m² 1,938 ft² |
| Minimum Room Size Required for this config |
345 m³ 12,184 ft³ |
330 m³ 11,654 ft³ |
These values are indicative ONLY and may vary depending on the model purchased, installation, and the fuel composition.
Manufacturer approved surround for the BS EN16647 Compliant XL1200 & XL900 burner.
Specification & Installation Guide
Need to know all about this product? We have a handy download file with all the information you will need from installation guides to full product specifications.