JJ Building Materials

Onyx Direct Stainless Steel Unvented Cylinder

209,16 €387,81 €46% OFF
Size: 90L
Retours sous 30 joursGarantie 1 an
Livraison estimée: 6 octobre - 8 octobre.
209,16 €
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Onyx Direct Stainless Steel Unvented Cylinder

The Onyx Direct Stainless Steel Unvented Cylinder is a fully electric hot water solution designed for homes and apartments that aren’t connected to a traditional boiler system. Featuring two powerful 3kW immersion heaters — one for day-to-day timed use and another as a backup — it ensures reliable and efficient hot water whenever you need it. From 170L upwards, the primary immersion heater is upgraded with a Smart Eco thermostat, helping to maintain consistent temperatures while keeping energy use low. Built in the UK and made from high-grade Duplex stainless steel, the Onyx Direct Cylinder offers exceptional durability and corrosion resistance. It’s engineered to deliver strong, dependable performance for all-electric properties, making it a perfect choice for modern households, rental apartments and energy-efficient installations.

Complete G3-Approved Kit Included

Each cylinder comes with a full G3 unvented installation kit, including: Two Thermowatt 3kW immersion heaters (On 170L, 200L, 250L and 300L models, the second immersion is a Smart Immersion) Zilmet expansion vessel Caleffi tundish Caleffi 22mm inlet control group with pressure relief valve Factory-fitted Caleffi 7-bar / 90°C temperature & pressure relief valve Factory-fitted secondary return (supplied with 200L, 250L and 300L models) Available in a wide range of sizes — 90L, 125L, 150L, 170L, 200L, 250L and 300L, there's an option to suit everything from compact apartments to larger homes with higher hot water demand.

FAQs

Is this cylinder suitable for homes without a boiler?

Yes — this is a **direct** cylinder, meaning it heats water using immersion heaters only, making it ideal for 100% electric properties.

What is the Smart Eco immersion heater?

On models 170L and above, the main immersion heater includes a Smart Eco thermostat that learns usage patterns and heats water more efficiently.

Does the cylinder come with everything needed for installation?

Absolutely. The Onyx Direct cylinder includes a full G3 unvented kit with all essential safety and control components.

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  • Les produits bénéficient d’une garantie d’un an à compter de la date d’achat.
  • Elle couvre les défauts de fabrication dans des conditions normales d’utilisation. Les dommages liés à une mauvaise utilisation, un accident, l’usure normale ou une modification non autorisée sont exclus.
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