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Unvented Hotwater
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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.

picture of a water cylinder in a cupboard

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.

Copyright 2011 AA Heating and Plumbing Ltd