Question 1

What does a UV steriliser do that a filter does not?

Accepted Answer

A filter removes particles and chemicals. UV light at 254 nanometres stops bacteria, viruses, Giardia and Cryptosporidium reproducing, without adding chlorine or anything else to the water. It is the treatment for water from a borehole, a tank or a river.

Question 2

Does it need a filter in front of it?

Accepted Answer

Yes. UV only works on water it can see through. A 5 micron then 1 micron sediment stage ahead of the lamp keeps the water clear enough; cloudy water shades the organisms from the light.

Question 3

How often is the lamp changed?

Accepted Answer

Every 9 000 hours, about a year of continuous running, whether or not it still glows: the output falls long before the light goes. Clean the quartz sleeve every six months and replace it when it is scaled or cracked.

Question 4

Is the 55 watt unit big enough for a house?

Accepted Answer

At 2 720 litres an hour it matches the AquaGuard and covers a household at full flow. A borehole feeding several houses or a guest lodge needs more than one unit in series. Ask us with your flow rate.

UV Sterilisers

UV Sterilisers

AquaClear UV 55 Watt Steriliser

Spares for the 55 watt unit

AquaClear UV 55 Watt Lamp, Replacement

AquaClear UV 55 Watt Lamp and Sleeve Service Kit

AquaClear UV 55 Watt Quartz Sleeve

AquaClear UV 55 Watt Ballast

Read before you buy.

How often should you change water filter cartridges in South Africa?

Before you choose.