What filter does a Vicks V3700 take?
It takes the Protec WF2 Wick Filter (Vicks / Kaz) — OEM part number WF2.
Vicks V3700, evaporative humidifier, tabletop, sold as the Starry Night.
Lowest verified price: $11.95 — aftermarket, 1 filter, HQRP replacement at Best Buy (HQRP). Best Buy shipping/pickup terms at checkout. Checked 2026-11-11.
Buy the WF2 on Amazon — WF2Direct link to the verified Amazon listing for this part. Amazon price is shown on Amazon; we do not quote it here.
The part, in brief
| Part | Protec WF2 Wick Filter (Vicks / Kaz) |
|---|---|
| Replacement interval | Replace about every 2 months, depending on use and water hardness (Protec packaging, via HEB listing). |
| Per change | One round wick per change. |
| Equivalents | HQRP WF2 replacement, Honeywell HAC-504 |
Verified prices
| Option | Price | Store & shipping |
|---|---|---|
| Genuine (OEM) 1 filter, genuine Protec WF2 | $19.17 | WaterFiltersFAST Shipping calculated at checkout · Checked 2026-11-11 · source |
| Aftermarket 1 filter, HQRP replacement | $11.95 | Best Buy (HQRP) Best Buy shipping/pickup terms at checkout · Checked 2026-11-11 · source |
Full record with every price, source and date: Protec WF2 Wick Filter (Vicks / Kaz) page.
Finding the model number on a Vicks
Model numbers are on the bottom of the unit, starting with 'V'. Juvenile models add 'JUV' (for example V3900JUV, the Starry Night projector model).