Gledhill PROIN250 250L Pro Indirect Unvented Hot Water Cylinder

The Gledhill PROIN250 is a 250-litre Stainless Pro indirect unvented hot water cylinder designed for use with gas or oil boilers in open-vented or sealed pumped primary systems. Manufactured from premium-grade duplex stainless steel with 50mm HCFC-free EnviroFoam insulation, it provides reliable mains-pressure hot water while meeting Section G3 of the Building Regulations.

This model suits domestic households requiring high-volume hot water for showers and baths. It is supplied as a complete package with colour-matched components and carries full WRAS and NSF WRC approvals for peace of mind on new installs or replacements.

Key Features

• High-efficiency corrugated primary coil for rapid heat transfer
• 50mm insulation minimises heat loss and energy costs
• Aligned tappings for straightforward installation
• Factory-fitted 22mm connections including secondary return
• Two 3kW immersion heaters (1¾” BSP) for backup heating
• Pressure & temperature relief valve set at 95°C / 6 bar
• Supplied with cold water inlet control set, zone valve, tundish and drain valve
• 25-year cylinder warranty (subject to registration)
• ErP rating C with low heat loss of 74W
• Manufactured in the UK from corrosion-resistant duplex stainless steel

Benefits

• ✔ Delivers high flow rates for multiple simultaneous outlets
• ✔ No external expansion vessel required on standard installs
• ✔ Reduces running costs through excellent thermal insulation
• ✔ Compliant and safe for UK building regulations
• ✔ Easy to install with pre-aligned connections
• ✔ Long-term durability and corrosion resistance
• ✔ Complete kit minimises additional parts ordering
• ✔ Suitable for both new-build and replacement projects
• ✔ Backed by Gledhill’s proven UK manufacturing quality

Technical Specifications

• MPN: PROIN250
• Capacity: 248 litres (nominal 250L)
• Height: 1744mm
• Diameter: 550mm
• Empty weight: 38kg
• Primary flow/return: 22mm
• Hot water draw-off: 22mm
• Immersion heater: 1¾” BSP 3kW (x2)
• ErP rating: C
• Heat loss: 74W
• Secondary return: 22mm

What’s in the Box?

1 x Gledhill PROIN250 Stainless Pro 250L Indirect Unvented Cylinder complete with cold water inlet PRV combination valve, pressure & temperature relief valve, tundish, drain valve, two-port zone valve and immersion heaters.