Head to head
Telford Tempest 170 Direct vs Telford Tempest 300 Indirect
The Telford Tempest 170 Direct comes with 23 years more warranty.
Last reviewed 13 September 2026
Key differences
- Warranty: the Telford Tempest 170 Direct comes with 23 years more warranty.
Specifications side by side
| Telford Tempest 170 Direct | Telford Tempest 300 Indirect | |
|---|---|---|
| Capacity | 170 litres | 300 litres |
| Dimensions | 1200 mm high x 510 mm diameter (approx.) | 1750 mm high x 580 mm diameter |
| Weight | 40 kg empty, 208 kg full | 61 kg |
| Immersion heater | 2 x 3kW, 240V single phase | 3kW, 240V single phase, included |
| Warranty | Lifetime guarantee on the cylinder (25 years internal), 2 years on components | Lifetime guarantee on the body with annual service, 2 year component guarantee |
| Max inlet pressure | 3 bar (inlet control group) | - |
| Material | - | 2304 duplex stainless steel |
| Relief valve setting | - | 7 bar / 90C |
Sources: Telford Tempest 170 Direct, Telford Tempest 300 Indirect. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the Tempest 170 Direct if...
- you want one that comes with 23 years more warranty
A 170 litre direct unvented cylinder from Telford's Tempest range, built in duplex stainless steel with twin 3kW immersions rather than a boiler coil. It suits an all-electric property, and the cylinder body carries a lifetime guarantee when serviced annually.
Full Tempest 170 Direct specifications →Buy or hire the Tempest 300 Indirect if...
A 300 litre indirect cylinder for a larger household or a property with high simultaneous hot water demand, part of Telford's Tempest range. Like the smaller direct model it carries a lifetime body guarantee when serviced annually.
Full Tempest 300 Indirect specifications →Common questions
What is the difference between the Telford Tempest 170 Direct and the Telford Tempest 300 Indirect?
The Telford Tempest 170 Direct comes with 23 years more warranty. The Telford Tempest 170 Direct is a direct unvented hot water cylinder, 170 litres; the Telford Tempest 300 Indirect is a indirect unvented hot water cylinder, 300 litres.
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