Powerstock glass lined calorifier
Powerstock glass lined calorifier installed

Glass lined calorifier for indirect fired hot water storage.

7 models of calorifier with continuous outputs (@44°C ∆T) of 569, 682, 1173, 1460, 1760, 1627, 1858 l/h.

Warranty 2 product item
Part L compliant product icon
BIM objects icon

Product information

    • Power outputs 29-96kW and storage capacities of 160-958 litres.
    • Safe and clean indirect fired domestic hot water generation - want to know the difference between Indirect vs Direct Hot Water Systems?
    • Integrates easily with renewable energy sources and heating commercial boilers.
    • Long life with corrosion protection from magnesium anodes.
    • Flexibility in design of commercial heating and hot water systems.
    • Low cost solution with easy installation and no flue requirements.
    • Twin coils to connect to two energy sources (on the PS300-PS1000 models) or connect in series for an extended surface area single coil.
    • Easy access to plant room as the most Powerstock hot water calorifiers fit through a standard doorway.
    • Inspection and clean out door for easy maintenance.
    • Full project assistance with hot water sizing and selection of equipment to match the application.
    • BIM objects available to assist in design and management.
    • Extensive back up and support from our team of experienced engineers across the UK.
    • Long term commitment to spare parts
    • Available for next day delivery (dependent on stock availability, charges apply, order cut-off 12pm).

Technical data

Units PS160
General Data
ErP class B
Storage capacity l 157
Top coil surface area N/A
Top coil volume l N/A
Bottom coil surface area 0.75
Bottom coil volume l 4.9
Max operating pressure (primary - coil) bar 10
Max operating pressure (secondary - storage) bar 10
Max operating temperature (primary - coil) °C 110
Max operating temperature (secondary - storage) °C 70
Weight empty kg 70
Standby losses kW/24hr 1.34
Bottom Coil Only
Continuous output* l/h 501
Heat input kW 29.2
10 min peak output* l 250
Recovery time min 20
Top & Bottom coil connected in series
Continuous output* l/h N/A
Heat input kW N/A
10 min peak output* l N/A
Recovery time min N/A
Destratification pump power supply 230V 50Hz 1 Phase
Destratification pump power consumption W 60
Destratification pump current A 0.35
Electric anode power supply 230V 50Hz 1 Phase
Electric anode power consumption W 23
Electric anode current A 0.1


Powerstock calorifier and water storage brochure

Product brochures 2695 kb

Powerstock calorifier installation manual

Installers guides 5699 kb

Powerstock calorifier 160 front view

CAD 13 kb

Powerstock calorifier 160 plan view

CAD 5 kb

Powerstock calorifier 160 side view

CAD 10 kb

Powerstock calorifier 200 front view

CAD 13 kb

Powerstock calorifier 200 plan view

CAD 5 kb

Powerstock calorifier 200 side view

CAD 11 kb

Powerstock calorifier 300 front view

CAD 20 kb

Powerstock calorifier 300 plan view

CAD 6 kb

Powerstock calorifier 300 side view

CAD 17 kb

Powerstock calorifier 400 front view

CAD 20 kb

Powerstock calorifier 400 plan view

CAD 6 kb

Powerstock calorifier 400 side view

CAD 17 kb

Powerstock calorifier 500 front view

CAD 22 kb

Powerstock calorifier 500 plan view

CAD 6 kb

Powerstock calorifier 500 side view

CAD 19 kb

Ideal uses/applications

  • With renewable energy products such as biomass boilers and solar thermal hot water system.
  • Coupled to a heating boiler to provide the domestic hot water for small, medium and large commercial and public buildings including schools, hospitals, offices and hotels.

Optional extras

  • Unvented water supply kit - essential for any unvented application and includes an expansion vessel sized for the water heater and local pipework only.
  • Top to bottom pump recirculation pump kit to prevent stratification and protect against legionella within the water heater.
  • Electrical anode protection.
  • Electric immersion heater kits with ratings of 4kW or 9kW.
  • Choose from a wide range of service contracts to help maintain optimum performance.
  • Book commissioning at the same time as placing your order for improved warranty terms. 

Often bought with

Powerstock storage tank

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Case studies

Powerstock calorifier overcomes site flue issues

Multi-tenanted office block

Sector: Offices

Project: A calorifier was selected as the ideal product to replace a failed water heater and overcome flue issues on site to get hot water back up and running quickly.

Building: Multi-tenanted office building

Application: Domestic Hot Water (DHW) 500l

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St Paul's Cathedral benefits from Hamworthy's Wessex ModuMax modular boilers' efficiency and quick heat up time.

St Paul's Cathedral, London

Sector: Historic building

Project: The prestigious cathedral on the top of Ludgate Hill benefits from modular boilers and high-performance calorifiers from Hamworthy Heating.

Building: Grade 1 listed refurbishment

Application: Space heating 1,016kW, domestic hot water 1,000L

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Canford School refurbished one of its 24 plant rooms.

Canford School, Dorset

Sector: Education

Project: A prestigious boarding school in Dorset continued a long-standing relationship to procure its heating and hot water plant from local manufacturer.

Building: Boarding school refurbishment

Application: Space heating, 210kW; indirect fired DHW

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Nebula Court housing development benefits from Hamworthy's solar thermal package as well as cast iron condensing boilers.

Nebula Court, London

Sector: Affordable housing

Project: A development in London is setting the trend for renewable energy in community housing, with 63 solar collectors from Hamworthy.

Building: New build residential

Application: Space heating 540kW and domestic hot water

Learn more