Key Features
- 250L indirect unvented hot water cylinder — supplies hot water for showers, baths, and sinks
- 12 kW boiler output — reheats water in approximately 2–3 hours
- Digital display on boiler — set temperature, and see current water temperature and error codes
- Power stage indicator on boiler — shows the boiler's current operating stage
- Pre-plumbed and pre-assembled hot water cylinder — for simpler installation
- Grundfos pump and copper press fittings — built for durability
- Zoned heating control — 2 x 22mm zone valves help with insulation
- Stainless steel cylinder with polyurethane installation — retains water temperature
- 70 kg empty weight — cylinder weighs 320 kg once full to the 250L capacity
Guarantee
What's Included
- 12 kW Heat-only electric boiler
- 250L Pre-plumbed cylinder
- Inlet control set
- Tundish
- Temperature & pressure-relief valve
- 3 kW Immersion heater
- 2x 2-Port zone valve
- Grundfos circulation pump
- System expansion vessel
- 3-Bar pressure-relief valve
- Dual cylinder stat
- Filling loop
- Automatic bypass valve
- 2x Auto air vent
- DHW expansion vessel (loose)
The CAIO12/250IND-B all-in-one system combines a 250L hot water cylinder with a 12 kW electric system boiler, delivering reliable central heating and a continuous supply of hot water in a fully integrated, factory-assembled unit. Its compact, efficient design makes it an ideal solution for medium-sized homes seeking a quiet, low-maintenance, and space-saving alternative to conventional heating systems.
Pre-Plumbed and Pre-Assembled Hot Water Cylinder
This unvented cylinder is supplied pre-assembled and pre-plumbed, complete with two 22 mm zone valves and standard pipework connections. The factory-fitted setup reduces installation time and simplifies plumbing, allowing installers to fit the system quickly and efficiently.
12 kW Electric System Boiler with Digital Display
The 12 kW boiler heats the 250L cylinder effectively, usually bringing it to the desired temperature within 2–3 hours, depending on the starting water temperature.
A digital display allows precise temperature control and provides real-time readings and error code notifications. The + / − buttons make adjusting the temperature straightforward, while the power stage indicator shows whether the boiler is operating at 1/3, 2/3, or full capacity.
Grundfos Circulation Pump
The integrated Grundfos pump ensures efficient circulation of hot water throughout the heating system, maintaining even temperatures across the home. Its quiet operation makes it particularly suited to living areas.
Copper Press Fittings
Copper press fittings provide secure, leak-proof joints using press-fit technology, removing the need for soldering or brazing. Copper’s natural resistance to corrosion ensures plumbing remains long-lasting and reliable.
Stainless Steel Cylinder with Polyurethane Insulation
The stainless steel cylinder resists corrosion, helping to prevent leaks and extend the unit’s lifespan. It is also less prone to scaling or pitting, making it suitable for areas with variable water quality.
Polyurethane insulation minimises standby heat loss, keeping water hot for longer, improving energy efficiency, and helping to reduce running costs.
Why Choose This Combination
The 250L indirect unvented cylinder paired with the 12 kW electric system boiler provides a compact, dependable heating solution for medium-sized homes. It delivers sufficient hot water for showers, baths, and sinks, ensuring a consistent supply whenever required.
Order today for a ready-to-install, energy-efficient, and space-saving heating system, with fast delivery and minimal installation effort.
