Replacement Filters for the Vertex PureWater PT-4.0 RO (under-sink) Reverse Osmosis System

Vertex · 3-Stage Reverse Osmosis

Replacement Filters for the Vertex PureWater PT-4.0 RO (under-sink) Reverse Osmosis System

Every filter your system needs — stage by stage — led by the IPW house-brand set that costs less than the OEM parts.

Also sold as: Vertex · Vertex PT-4.0 · PT-4.0 · PT4 · Vertex PureWater · PureWater PT-4.0
Vertex PureWater PT-4.0 RO (under-sink)
✓ Best value — replace everything at once

IPW Vertex PT-4.0 Filter Kit — best value

$18.99

Guaranteed to fit your Vertex PureWater PT-4.0 RO (under-sink).

🛒 Add the complete set to cart
Filters by stage
Buy the whole set above, or replace stages individually below.
1
replacement filter
Sediment pre-filter
5µm, 10×2.5
IPW 5M-SED-10×2.5 — 5µm sediment — $3.50
2
replacement filter
Carbon block / GAC
10×2.5
IPW UDF-10 — coconut GAC carbon — $7.99
3
replacement filter
Inline post-carbon polish
¼" quick-connect
IPW AICRO — inline post-carbon — $8.00
When to replace
🪣 Sediment & carbon: every 6–12 months💧 RO membrane: every 2–3 years
✓ Guaranteed to fit your Vertex PureWater PT-4.0 RO (under-sink) / Vertex.
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