Replacement Filters for the Watts Kwik-Change WQC4RO13 (13") Reverse Osmosis System
Watts · Kwik-Change 13" Reverse Osmosis
Replacement Filters for the Watts Kwik-Change WQC4RO13 (13") Reverse Osmosis System
Every 13" cartridge for the Watts Kwik-Change WQC4RO13-100 — stage by stage — led by the annual bundle our customers reorder most.
Also sold as: Watts WQC4RO13 · WQC4RO13-100 · WQC4RO13-100MT · WQC4RO13-100PT · Kwik-Change 13" · WQCSC13 · WQCCC13 · WQCM13-100 · WQCGAC13
✓ Full year — 5 filters + 100 GPD membrane
Watts WQC4RO13-100 Kwik-Change Annual Bundle with Membrane
$294.00
Genuine Watts: 2× WQCSC13 sediment, 2× WQCCC13 carbon block, 1× WQCM13-100 membrane and 1× WQCGAC13 GAC post-filter.
🛒 Add the annual bundle to cartMembrane still good? Get the 13" 3-filter kit (1R-1Y-1B) — $102.86 or the 13" 6-month 2-filter kit (1R-1Y) — $67.22.
Filters by stage
Buy the set above, or replace stages individually below.
1
Sediment pre-filter
13" Kwik-Change sediment · 5µm
Genuine Watts part WQCSC13 · 13" quarter-turn Kwik-Change
2
Carbon block (pre)
13" Kwik-Change carbon block
Genuine Watts part WQCCC13 · 13" quarter-turn Kwik-Change
3
RO membrane
100 GPD · 13" Kwik-Change
Watts WQCM13-100 — 13" 100 GPD membrane — $178.41
Genuine Watts part WQCM13-100 · 13" quarter-turn Kwik-Change
4
GAC carbon post-filter
13" Kwik-Change GAC
Genuine Watts part WQCGAC13 · 13" quarter-turn Kwik-Change
When to replace
🪣 Sediment & carbon: every 6 months🥤 GAC post-filter: every 12 months💧 RO membrane: every 1–3 years, when TDS rejection drops
✓ Fits the Watts Kwik-Change WQC4RO13 (13", 100 GPD). The 11" WQC4RO11 and Watts Premier RO-Pure use different parts.
Not sure this is your system? Use the Isopure Water Filter Finder → Match by system name, by the part number printed on your current filter, or by snapping a photo.
Watts WQC4RO13 filter FAQ
What filters does the Watts WQC4RO13 use?
Four 13" quarter-turn Kwik-Change cartridges: WQCSC13 sediment, WQCCC13 carbon block, WQCM13-100 100 GPD membrane and WQCGAC13 GAC post-filter. The annual bundle has a full year of them.
Will 11" WQC4RO11 filters fit my 13" system?
No. The 11" and 13" Kwik-Change cartridges are different lengths and are not interchangeable. 11" owners should use our WQC4RO11 page.
How often should I change the WQC4RO13 filters?
Change the sediment and carbon block every 6 months and the GAC post-filter every 12 months. That is why the annual bundle has two sediment and two carbon. Replace the membrane when TDS rejection drops, usually every 1 to 3 years.
Do Watts Premier RO-Pure filters fit the Kwik-Change?
No. The RO-Pure uses push-button 105311-style cartridges. Kwik-Change uses quarter-turn WQC cartridges. See our RO-Pure page for those.
All replacement filters by system · Watts RO & OneFlow replacement filters · Watts Kwik-Change WQC4RO 11" RO · Watts Kwik-Change UF WQCFU-T-11
Compatibility reference only. Photos of complete systems shown on this page are provided to help you identify your unit and confirm that our filters fit. All brand names, model numbers, and product images are the property of their respective owners; Isopure Water (IPW Industries Inc.) is not affiliated with, sponsored by, or endorsed by these manufacturers. We sell compatible replacement filters and parts — not the branded systems pictured, unless a system is separately listed for sale on our store.
