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Telford Tempest Stainless Steel Direct 125L Unvented Cylinder - TSMD125

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SKU TSMD125
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Original price £669.18
Original price £669.18 - Original price £669.18
Original price £669.18
Current price £557.65
£557.65 - £557.65
Current price £557.65

The Telford Tempest 125L Direct Unvented Cylinder (TSMD125) is a high-quality stainless steel hot water cylinder designed to provide reliable mains-pressure hot water for domestic properties. Manufactured in the UK, this direct unvented cylinder combines a compact design with efficient hot water storage and a specified ErP rating of C.

As a direct unvented hot water cylinder, the TSMD125 uses immersion heating to heat the stored water and does not require a cold water storage tank. The cylinder is manufactured from Duplex stainless steel and is supplied with 316L grade stainless steel 22mm compression fittings. Its compact dimensions make it suitable for installations where available cylinder space is limited.

125L Capacity Direct Unvented Duplex Stainless Steel Made in the UK ErP Rating C

Key Highlights

125L
Capacity
510mm
Diameter
12 Bar
Max Incoming Pressure
C
ErP Rating

Applications & Suitability

  • Domestic properties requiring reliable stored hot water.
  • Homes requiring mains-pressure hot water.
  • Installations where a separate cold water storage tank is not required.
  • Smaller airing cupboards and utility spaces where compact cylinder dimensions are beneficial.
  • Modern domestic hot water systems using direct immersion heating.
  • Projects requiring a Duplex stainless steel unvented cylinder.
  • Installations requiring a 125-litre hot water storage capacity.

Key Specifications

Specification Value
Model TSMD125
Product Type Direct Unvented Hot Water Cylinder
Range Telford Tempest
Capacity 125 Litres
Height 870 mm
Diameter 510 mm
Weight Empty 33 kg
Weight Full 154 kg
Cylinder Material Duplex Stainless Steel
Fittings 316L Stainless Steel 22mm Compression Fittings
Operating Pressure 3 Bar
Maximum Incoming Water Supply Pressure 12 Bar
Secondary Return No
ErP Rating C
Manufacture Made in the UK

Direct Unvented Hot Water Storage

The Telford Tempest TSMD125 is a direct unvented cylinder designed to store and heat domestic hot water for mains-pressure delivery. As a direct cylinder, the stored water is heated using immersion heaters rather than an indirect primary coil.

The unvented design means the cylinder can provide mains-pressure hot water without requiring a separate cold water storage tank, making it suitable for modern domestic hot water installations.

Duplex Stainless Steel Construction

The cylinder is manufactured from premium Duplex stainless steel, providing the main vessel construction for the Telford Tempest 125L. The supplied product information highlights the material's resistance to corrosion and general wear.

The cylinder is also supplied with 316L grade stainless steel 22mm compression fittings, providing durable connections as part of the supplied configuration.

Construction Highlights
  • Duplex stainless steel cylinder construction
  • 316L stainless steel fittings
  • 22mm compression fittings
  • Designed for domestic hot water storage

Compact Cylinder Design

With a 510mm diameter and 870mm height, the Telford Tempest 125L has a compact format designed for easier installation in smaller airing cupboards and utility spaces.

Key dimensional information:
  • Capacity: 125 litres
  • Height: 870mm
  • Diameter: 510mm
  • Empty weight: 33kg
  • Full weight: 154kg

Pressure Performance

The cylinder has a specified operating pressure of 3 bar and a maximum incoming water supply pressure of 12 bar. These specifications define the supplied pressure parameters for the TSMD125.

The direct unvented configuration is designed to provide stored domestic hot water at mains pressure without requiring a separate cold water storage tank.

Energy-Efficient Insulation

The Telford Tempest 125L is supplied with high-performance insulation designed to help reduce standing heat loss and improve overall energy efficiency. The cylinder has a specified ErP rating of C.

Made in the UK

The Telford Tempest 125L Direct Unvented Cylinder is manufactured in the UK, providing a domestically manufactured hot water storage option for residential installations.

Important Delivery & Product Information

Please Note: Delivery for this item is Mainland England ONLY.

Image Disclaimer: The product image is for illustration purposes only.

Please download and review the available product data sheets to confirm that this cylinder is suitable for your specific installation requirements.

Ideal For

  • Domestic properties requiring reliable mains-pressure hot water.
  • Homes without the requirement for a separate cold water storage tank.
  • Smaller airing cupboards and utility spaces.
  • Direct unvented hot water installations.
  • Projects requiring Duplex stainless steel cylinder construction.
  • Installations where 316L stainless steel 22mm compression fittings are required.
  • Modern domestic hot water systems requiring a compact 125-litre cylinder.

Frequently Asked Questions

What type of cylinder is the Telford Tempest 125L?

The TSMD125 is a direct unvented hot water cylinder designed for domestic properties.

What is the capacity of the Telford Tempest TSMD125?

The cylinder has a 125-litre capacity.

Does the cylinder require a cold water storage tank?

No. The TSMD125 is an unvented cylinder designed for mains-pressure hot water and does not require a separate cold water storage tank.

What material is the Telford Tempest 125L made from?

The cylinder is manufactured from Duplex stainless steel.

What fittings are supplied?

The cylinder is supplied with 316L grade stainless steel 22mm compression fittings.

What is the operating pressure?

The specified operating pressure is 3 bar.

What is the maximum incoming water supply pressure?

The specified maximum incoming water supply pressure is 12 bar.

What is the ErP rating?

The Telford Tempest 125L Direct Cylinder has an ErP rating of C.

Where is the Telford Tempest 125L manufactured?

The cylinder is manufactured in the UK.

Telford Tempest 125L Direct Unvented Cylinder

The Telford Tempest TSMD125 combines 125-litre hot water storage with Duplex stainless steel construction, 316L stainless steel 22mm compression fittings, a compact 510mm diameter and mains-pressure unvented operation. With an operating pressure of 3 bar, maximum incoming supply pressure of 12 bar and ErP C rating, it provides a practical domestic hot water storage solution for compact installation spaces.

Looking for more unvented hot water cylinders?

Explore our Hot Water Storage range for more cylinder options.

125 Litres
Capacity
935 mm
Height
510 mm
Diameter
Stainless Steel
Material

Key features

01

Compact 125L Capacity

Perfectly suited for apartments, en-suites, and smaller households with moderate hot water demand.

02

Durable Stainless Steel Construction

Ensures long lifespan, corrosion resistance, and consistent performance.

03

Direct Heating System

Uses immersion heaters for straightforward installation without requiring a boiler.

04

Space-Saving Vertical Design

Slim profile with 510mm diameter allows installation in cupboards or tight utility areas.

05

Reliable Tempest Range Quality

Part of the trusted Telford Tempest series known for durability and efficiency.

06

Modern White Finish

Blends easily into contemporary home environments.

Technical specification

Find all the essential technical information

Product Code
TSMD125
Brand
Telford
Range
Tempest
Type
Direct Unvented Cylinder
Capacity
125 Litres
Height
935 mm
Diameter
510 mm
Orientation
Vertical
Material
Stainless Steel
Connection Size
2.5 mm
Heating Type
Direct
System Type
Unvented
Warranty
2 Years

What's included

✓ Telford Tempest 125L Direct Unvented Cylinder
✓ Factory-Fitted Components
✓ Installation Instructions

Shipping information

Standard delivery

1–3 working days

Free local delivery over £100

Heavy item delivery

34.5kg unit — pallet delivery, please ensure access

£60.00

Store pickup

GetPlumb Reading store — usually ready in 24 hours

Free

Good to know

  • Tracking details sent by email once dispatched
  • Someone needs to be present to receive heavy items
  • Deliveries to Scottish Highlands and offshore may take longer — check at checkout
  • Installation is not included — see our approved installer network

Need more information regarding shipping?

View our complete shipping policy for delivery charges, eligible postcodes, delivery times, exclusions and more.

View Full Shipping Policy →

Frequently asked questions

What is a direct unvented cylinder? +
A direct cylinder heats water using electric immersion heaters instead of a boiler, making it ideal for properties without gas heating.
Is 125L enough for a household? +
Yes, it is suitable for small households, apartments, or single-bathroom properties.
Does it provide good water pressure? +
Yes, as an unvented cylinder, it delivers mains-pressure hot water for strong flow at taps and showers.
Can it be installed in a cupboard? +
Yes, its compact size and vertical design make it ideal for tight spaces.
Does it come with immersion heaters included? +
Typically yes, but always confirm with the supplier before purchase.
JM RH SP
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