Puretec Compatible UV Replacement Lamps - RL4, RL5 & RL6 for Puretec UV Systems NZ

Compatible replacement UV lamps for Puretec UV systems. Built to the correct length, wattage, and standard 4-pin connection for straightforward installation. Select your lamp from the dropdown using the compatibility guide below.

UV lamp output decreases over time even when the lamp is still visibly lit. Replace annually to ensure your system continues to deliver effective UV treatment.

Which lamp do I need?

RL5 Compatible — 436mm, 48W, 4-pin

Suits: Puretec H Series systems

RL6 Compatible — 520mm, 46W, 4-pin

Suits: Puretec Hybrid G, R and P Series systems

RL4 Compatible — 843mm, 40W, 4-pin

Suits: Puretec R Series systems

Note: the RL6 and RL4 both suit R Series systems but are different lamps — different lengths and wattages. Check your system's existing lamp length before ordering to confirm which one you need.

Full technical specifications

Warranty: 1 year (all variants)

Frequently asked questions

Which lamp do I need?

Match your Puretec system series to the compatibility guide above. H Series systems take the RL5 (436mm, 48W). Hybrid G, R, and P Series systems take the RL6 (520mm, 46W). R Series systems may take either the RL6 or the RL4 depending on the specific model — check the length of your existing lamp before ordering. If you're not sure, get in touch before ordering.

Why do both the RL6 and RL4 suit R Series systems?

Different R Series models use different lamp specifications. The RL6 is 520mm and 46W; the RL4 is 843mm and 40W. They are not interchangeable. Check the length of your existing lamp — this is the most reliable way to confirm which one you need.

Why do I need to replace the lamp annually?

UV lamp output decreases over time as the lamp ages. The lamp may still glow but no longer deliver enough UV energy to treat the water effectively. Annual replacement ensures your system continues to work as intended. Don't wait for the lamp to stop glowing — replace it on schedule.

Are these genuine Puretec lamps?

No — these are compatible replacement lamps designed to the correct length, wattage, and 4-pin connection specification for the listed Puretec systems. They are not genuine Puretec branded lamps.

Can I replace the lamp myself?

Yes — UV lamp replacement is straightforward. Always turn off the power before removing or installing a lamp. Handle the lamp carefully and avoid touching the glass with bare hands. Follow the instructions in your system manual.

Do I also need to replace the quartz sleeve?

The quartz sleeve should be cleaned every time you change the lamp — scale or deposits on the sleeve reduce UV light reaching the water. Replace the sleeve if it is scratched or cloudy.

What warranty do the lamps carry?

1 year on all variants.