Quantum Water HC
125L Quantum Water Cylinder QWCd125-580
Where to buy

You are here

125L Quantum Water Cylinder QWCd125-580


125L Quantum Water Cylinder QWCd125-580


In order to improve our service to you, we are undergoing key systems upgrades - there may be delays on dispatch and delivery of all online orders. Thank you for your patience.

125L Quantum Water Cylinder QWCd125-580

The Quantum water cylinder is the world’s most-advanced direct-electric water cylinder. Designed and developed by our own in-house team of experts, the Quantum cylinder is the ideal partner to the Quantum space heater for a complete heating and hot water system, or as a standalone hot water system for the electrically heated home.

  • .

Other options are available for this product.

Find an installer

This product can be installed by one of our many installers. Enter your postcode to view which are close to you:


  • Unvented cylinder give high flow rates for efficient hot water delivery ideal for powerful showers and fast-filling baths.
  • Fully compatible with all tap fittings.
  • Light and easy to handle for simple installation.
  • Surface mounted thermostats and sensors for easy installation and maintenance/replacement.
  • Supplied complete with inlet safety group and external expansion vessel.
  • All connections accessible from the front.
  • Slimline models are ideal for smaller spaces

Technical Specifications

Cold Water Inlet location22mm stainless steel
Key Features
ControlsElectronic thermostatic control and integrated thermal cut out.
Insulation60mm CFC/HCFD free foam
Location of Heat OutputHot water
Reheat Time (mins)122
Tank Capacity (litres)125
Tank Full Indicator125
Warranty / GuaranteeInner cylinder - 25 years, Immersion heaters - 2 years (excluding the effects of limescale), Other components - 2 years
Product Identification
Product model numberQWCd125-580
Height (mm)945
Width (mm)580
Weight (kg)24
Packaging Information
Pallet Quantity1
Packed Depth600
Packed Height1260
Packed Width590
Packed Weight41
Additional Features
ConstructionDuplex stainless steel inner cylinder, black HIPS/ABS (from 100% recycled materials) outer casing.
Heat Loss in 24 Hours (kW/24hr)0.95
Sensor TypeSurface mounted