250L Indirect Telford Tempest Vertical Unvented Cylinder TSMI250

250L Indirect Telford Tempest Vertical Unvented Cylinder – TSMI250

The 250L Telford Tempest TSMI250 is a premium indirect vertical unvented hot water cylinder, designed for larger family homes with multiple bathrooms and higher daily hot water demand.

Whether you're filling baths, running powerful showers or using hot water from more than one outlet at the same time, the TSMI250 delivers reliable mains pressure performance throughout the home. Manufactured from 2304 Duplex Stainless Steel, it provides exceptional corrosion resistance, outstanding durability and fast hot water recovery when connected to a traditional boiler. An integrated 3kW immersion heater also provides convenient backup hot water whenever required.

Supplied complete with the expansion vessel and installation kit, the TSMI250 includes everything required for a professional installation.

Key Features

• 250 litre indirect vertical unvented cylinder
• Ideal for larger family homes with multiple bathrooms
• Manufactured from 2304 Duplex Stainless Steel
• Excellent corrosion resistance for a longer service life
• 3 Bar working pressure
• Pressure tested to 15 Bar
• Relief valve operates at 7 Bar / 90–95°C
• 22mm domestic and primary connections
• Delivers up to 55 litres per minute flow rate
• Fast hot water recovery
• Suitable for mains pressure hot water systems
• Complete with expansion vessel and installation kit
• Lifetime cylinder warranty*

Supplied Complete With

• Expansion Vessel
• Expansion Vessel Kit
• Dual High Limit Thermostat
• 3kW Immersion Heater (240V Single Phase)
• Temperature & Pressure Relief Valve
• 3 Bar Inlet Control Group
• Two Port Motorised Valve

Everything required for a standard installation is included.

Why Buy From TDL?

• Kept in stock for immediate dispatch
• FREE Next Working Day Delivery when ordered before 2:30pm
• Competitive UK prices
• Expert technical support from our experienced team
• Real People. Real Service. For Over 40 Years.

Recommended Cylinder Size Guide

The above guide is intended as a recommendation only. Actual hot water requirements will vary depending on household usage.

Warranty

• Lifetime warranty on the stainless steel cylinder*
• 2-year warranty on supplied components

The cylinder must be serviced every 12 months by a qualified engineer to maintain the manufacturer's warranty.