How to Clean Vax Carpet Washer | Keep It Extracting Like New

A Vax carpet washer that doesn’t get cleaned after each use loses suction fast, smells like old carpet, and spreads grime instead of lifting it. The good news: the job takes about 20 minutes and uses only warm water and a soft sponge. Here’s exactly how to strip it, clean it, and dry it — whether you own a Platinum Power Max, Dual Power, Compact Power, or a newer cordless model.

Why Cleaning Your Vax After Every Use Matters

Leftover dirty water, hair wrapped around the brush bar, and a clogged filter are the three fastest ways to kill carpet-washer performance. According to Vax’s official maintenance guide for the Platinum Power Max, failing to rinse the dirty water tank filter is the single most common cause of poor extraction. A clean machine dries faster, smells neutral, and pulls more dirt per pass.

What You’ll Need

• Warm tap water (under 40°C — test with your wrist)
• Mild dish soap or a gentle detergent
• Soft sponge or cloth (no abrasive scrubbers)
• Old towel or cardboard to protect the floor
• Scissors (for cutting hair off the brush bar)
• A crosshead screwdriver (only if you own a Platinum Power Max model — four screws hold the brush bar assembly)

Step 1: Empty Both Water Tanks

Unplug the machine first. Press the dirty water tank release latch and pull the tank off. Lift the clip on the lid to separate it, then pour the smelly wastewater down the sink. Rinse the dirty water tank and lid with warm water. Next, remove the clean water tank (it’s usually on top or at the back), pour any leftover solution back into its bottle, and rinse the tank out.

Step 2: Rinse the Dirty Water Filter

Locate the filter screen at the back of the dirty water tank — it’s a fine mesh. Pull it out, rinse it under the warm tap, and use your fingers to wipe away any matted debris. Do NOT use soap on the filter; clean water is enough. A clogged filter is why some Vax machines suddenly stop picking up water. Pop it back in only when it’s completely dry.

Step 3: Clean the Nozzle and SpinScrub Brushes

Lift the nozzle release clip, pull the nozzle forward to separate it from the floor head, and rinse it under the tap. For the SpinScrub brushes, lay the carpet washer on its back (put a towel or cardboard under it). Pull the sides of the SpinScrub cover outward — the brushes pop free. Use scissors to cut away any hair or thread wound around the brush bristles, then rinse the brushes thoroughly. Align the tabs and push until you hear a click when replacing.

Step 4: Remove Debris from the Brush Bar (Platinum Power Max)

If you have a Platinum Power Max model, you’ll need a crosshead screwdriver. Remove the four screws holding the side brushes and rug guards. Slide out the brush bar and cut away all wrapped hair and string with scissors. Rinse the bar and the side brushes, then reassemble. This step is what separates a machine that still looks clean from one that actually performs clean.

If your Vax is a Dual Power model, you can take a shortcut: soak the entire floor head in a bowl of warm soapy water for two hours, then rinse with a hose and let it dry. This method requires zero disassembly but won’t clear deep-packed debris as thoroughly as removing the brushes.

Step 5: Air-Dry Every Part Completely

Leave all components — tanks, lids, nozzle, brushes, brush bar, and filter — on a towel for several hours or overnight. Damp parts stored in the machine create mold and a musty odor that transfers to your carpets on the next use. Do not reassemble until every piece is bone-dry.

For the main unit body, wipe the exterior with a soft cloth and mild detergent. Avoid getting excess water on the plastic housing or near any electrical ports.

How Often Should You Do This?

After every single use: empty and rinse both tanks, rinse the nozzle and the dirty water filter. After roughly three full uses (or whenever you notice the brush bar is tangling): remove the brushes and brush bar for a deep clean. A machine that gets the full deep-clean cycle once a month stays reliable for years.

Common Mistakes That Ruin a Vax Carpet Washer

• Hotter than 40°C water. Boiling water warps the plastic tanks and seals — permanent damage within one wash.
• Storing parts wet. The single fastest cause of mold growth and bad smells.
• Skipping the filter. A dirty filter makes the machine sound loud but pick up nothing.
• Overfilling the clean water tank. Ignoring the max-fill line leads to solution sloshing into places it shouldn’t.
• Leaving solution in the tank after use. Dilute it, tip it out, and rinse — old solution separates and clogs the pump.

Before your next deep clean, it helps to start with the right tool. Our tested best carpet washer roundup compares current models from Bissell, Hoover, and Rug Doctor — including a few machines that are significantly easier to clean than some Vax variants.

When the Odor Won’t Go Away

If the machine still smells after a full cleaning, the dirty water tank or its lid may have absorbed old odor. Soak both parts in a mix of warm water and white vinegar for an hour (skip the soap), then rinse and dry. For cordless models, ensure the battery was fully charged before the last use — running on a low battery reduces extraction power, leaving wet residue that grows bacteria over time.