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Unvented Hotwater
Unvented hotwater systems are required to supplement a boiler that has a central heating system, when the existing hotwater cylinder either needs replacing or when a more efficient supply of high pressure hotwater is required. They are particularly suitable for larger properties. They are not necessary if a combination boiler has been installed, unless that system cannot cope with the demands of the existing hotwater supply.
High quality Stainless Steel • 25 year cylinder guarantee • Fast heat up and recovery times • Low heat loss • Compact installation • Powerful showers • High flow rates • Dedicated secondary return on all cylinders • Pioneering laser welding
Stainless steel unvented cylinders specifically manufactured for UK water conditions and regulations.
Use this guide to assist in choosing your cylinder
Application |
Indirect |
Direct |
Bedsit |
R1 100 |
RD 100 |
1 Bedroom 1 Bathroom and shower |
R1 125 |
RD 125 or RD 170 |
2 Bedroom 1 Bathroom and shower |
R1 125 or R1 170 |
RD 170 or RD 210 |
3 Bedroom 1 Bathroom and shower |
R1 170 or R1 210 |
RD 210 or RD 250 |
4 Bedroom 1 Bathroom and shower |
R1 170 or R1 210 |
RD 210 or RD 250 |
2/3 Bedroom 2 Bathroom and shower |
R1 170 or R1 210 |
RD 210 or RD 250 |
3/4 Bedroom 2 Bathroom and shower |
R1 210 or R1 250 |
RD 250 or RD 330 |
4/6 Bedroom 3 Bathroom and shower |
R1 250 or R1 330 |
RD 330 |
Direct and indirect unvented calorifiers with capacities from 500 litres to 8000 litres are also available for use in industrial and commercial applications. For larger properties please consult us.
