A.O. Smith have achieved the Kiwa UK Regulation 4 Product Approval which demonstrates robust compliance with the UK Water Supply regulations. This certification underscores A.O.Smith’s commitment to delivering high-quality products that meet stringent industry standards and reinforces its position as a trusted leader in the commercial heating industry.

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What is KUKreg4?

The Water Supply (Water Fitting) Regulations 1999 are important for public health, safeguarding water supplies and promoting the efficient use of water within premises across the UK.  All products connected to the UK water supply must comply with Regulation 4 of Water Supply (Water Fittings) Regulations 1999 in England and Wales, The Water Supply (Water Fittings) (Scotland) Byelaws 2014 or The Water Supply (Water Fittings) Regulations (Northern Ireland) 2009.

What are the water fittings requirements?

Regulation 4 specifically sets out rules for water fittings, as follows:

Part 1: Every water fitting shall:

  • (a): Be of an appropriate quality and standard.
  • (b): Be suitable for the circumstances in which it is used.

Part 2: For the purposes of this regulation, a water fitting is of an appropriate standard or quality only if:

  • (a): It conforms to an appropriate British Standard or some other national specification which provides an equivalent level of protection and performance; or
  • (b): It conforms to a specification approved by the regulator.

KUKREG4 shows compliance with regulation 1(a)

Which products are KUKreg4 Certified?

The following products have been certified in accordance with KUKreg4, this includes their product variants across all sizes and versions:

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