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Telford Tempest Unvented Heatpump Cylinder

From £1,119.94 inc. VAT

  • Lifetime guarantee
  • Easy to install
  • Pressure test to 15 bar
  • 3 bar working pressure
  • Flow rate up to 55ltrs/min
  • Indirect and Twin Coil versions
  • Stylish appearance
SKU: TSMIHP Categories: , Tags: ,


Telford Tempest Heatpump Unvented Cylinder

Product Code: TSMIHP

With developers using more renewable energy sources than ever before, the Tempest Heat Pump is now available to be used with Air/Ground source heat pumps. This version is available in a single coil where Heat Pump is the only heat source and in Twin Coil where solar or a boiler is also available.

The Telford Tempest Heat Pump Unvented Cylinder is a high-quality, durable, and long-lasting hot water cylinder that is designed to be used with an air or ground source heat pump. Made from premium-grade Duplex stainless steel, the Tempest is resistant to corrosion and will provide years of reliable service.

Here are some of the things that make the Telford Tempest Heat Pump Unvented Cylinder stand out from the competition:

  • Premium grade Duplex stainless steel: The Tempest is made from premium grade Duplex stainless steel, which is up to 40% thicker than some of the lower grade stainless steel used by other manufacturers. This makes the Tempest more resistant to corrosion and ensures that it will last for many years.
  • Lifetime warranty: Telford is so confident in the quality of their products that they offer a lifetime warranty on the Tempest. This means that you can be sure that your investment is protected.
  • Heat pump coil design: The Tempest has a heat pump coil design that allows it to be heated by a heat pump. This means that you can save money on your energy bills and reduce your carbon footprint.
  • Slimline design: The Tempest has a slimline design that takes up less space than traditional hot water cylinders. This makes it ideal for smaller homes or for homes where space is limited.
  • High-density insulation: The Tempest is insulated with high-density insulation that keeps your hot water hot for longer. This means that you’ll use less energy on your heating bills.
  • Full unvented kit supplied: The Tempest comes with a full unvented kit supplied, including a remote expansion vessel. This means that you can install the Tempest quickly and easily without having to purchase any additional parts.
  • WRAS approved: The Tempest is WRAS approved, which means that it meets the highest standards of safety and quality.
  • Treated to protect against corrosion: The Tempest is treated to protect against corrosion, which further extends its lifespan.

If you’re looking for a top-quality, unvented hot water cylinder that is designed to be used with an air or ground source heat pump, the Telford Tempest Heat Pump is a perfect choice. Order yours today and enjoy peace of mind for years to come.


Product Code Description Capacity (Litres) Height (mm) Diameter (mm) Standing Loss (Watts) ERP Rating
TSMI200/HP Heat Pump 200 1500 510 85 C
TSMI250/HP Heat Pump 250 1800 510 90 C
TSMI300/HP Heat Pump 300 1650 554 97 C
TSMI200/HP/S Heat Pump Solar 200 1500 510 85 C
TSMI250/HP/S Heat Pump Solar 250 1800 510 90 C
TSMI300/HP/S Heat Pump Solar 300 1650 554 97 C


Downloads: Specification Sheet – Installation Guide

More information available on Telford’s website


Additional information

Weight N/A
Dimensions N/A



200 Litre, 200 Litre – Solar, 250 Litre, 300 Litre


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