Description

BiLight 120 Litre Hot Water Cylinder with High-Efficiency Heat Exchanger – Unvented & Versatile

The BiLight 120 Litre Hot Water Cylinder with high-efficiency heat exchanger is the smart, energy-efficient solution for homes seeking reliable hot water and flexible integration with alternative energy sources. This unvented, pressurised cylinder stores up to 116 litres of hot water and features an advanced internal heat exchanger coil, making it ideal for connecting to central heating, solar thermal panels, or wood burning stoves with back boilers, as well as pellet or gas burners.

Why Choose the BiLight 120 Litre Hot Water Cylinder?

The BiLight 120 Litre Hot Water Cylinder delivers up to 22 minutes of continuous hot water, consuming just 1.94kW of electricity per 24-hour cycle. Its patented TURBOLATOR technology ensures rapid water heating from alternative sources, while the PISTON EFFECT increases available hot water by up to 15%. INSUTECH insulation minimises heat loss, and the BiLight indicator provides clear, instant recognition of work modes.

Key Features

High-Efficiency Heat Exchanger: Internal coil with integrated TURBOLATOR for fast heating from alternative energy sources.
Flexible Integration: Easily connects to central heating, solar thermal, wood, pellet, or gas systems.
Advanced Insulation: INSUTECH technology delivers extremely low standing heat losses.
PISTON EFFECT: Optimises incoming water flow for up to 15% more hot water.
BiLight Indicator: Clear visual feedback for work modes.
Additional Sensor Pocket: Allows precise temperature management.
Energy Class C: Efficient, cost-effective operation.
Multiple Capacities: Also available in 80L, 100L, and 150L models.

Important Safety and Installation Information

IMPORTANT: The BiLight 120 Litre Hot Water Cylinder is unvented and, under UK Building Control regulations, must be installed with at least two safety measures. This cylinder includes a thermo temperature switch as one form of safety. We strongly recommend fitting an 8 Litre Safety Expansion Vessel and a 3.5 bar pressure release valve. Installation must be carried out by a qualified G3 installer—failure to comply may invalidate your warranty. For further guidance, see HSE unvented systems advice.

Specifications

Model: BiLight 120 S
Real Volume: 116 litres
Height: 1.150 m
Width: 0.440 m
Depth: 0.467 m
Mounting: Vertical
Rated Power: 2000 W
Heating Time Δt 45K (15–60°C): 22 minutes
Energy Class: C
Diameter: 440 mm
Thermo Pocket: Yes
Heat Exchanger Surface: 0.7 m²
Heat Exchanger Capacity: 3.2 L
Continuous DHW Flow Rate (ΔT 35°C, 80–70°C): 433 L/h
Exchange Power (max coil output, 80–70°C): 18.5 kW
Standing Losses: 81 W

Why Buy from Us?

Order the BiLight 120 Litre Hot Water Cylinder for free UK delivery on orders over £100. Benefit from secure payment options, including Klarna’s flexible plans

Additional Information 

FREE Delivery: Available on orders over £100. Next working day delivery is available for orders placed before 2 pm. Please click here to check delivery to your area.

Explore our full range of products for more options that suit your home.

Need Assistance? Contact us for expert advice on 0161 439 1400.

Looking for reliable hot water cylinders, electric heating solutions, or technical support? Visit tesy.com for full product information, technical documentation, and expert advice.