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Ever stepped out of a campsite shower and felt like you were still dripping cold water onto a metal floor? I felt that too, until I built a proper van shower that feels almost like a spa on wheels. Below is my full‑time van dweller’s play‑by‑play van shower setup – from tank choice to waste‑water handling – so you can skip the trial‑and‑error and get clean, hot water on demand.
Why a Dedicated Van Shower Matters
A shower isn’t just a hygiene station; it’s a morale booster on long trips. A dedicated shower compartment lets you keep the rest of the van dry, protects electronics, and creates a private space that feels like home. Since I rewired my entire 12 V system, I could size the shower draw on the same power budget I use for lights and a fridge, keeping everything balanced.
Picking the Right Van Water Tank Options
Water storage is the backbone of any shower. I tested three main options and settled on a hybrid approach.
Rigid Tanks – Pros and Cons
Rigid tanks such as the WaterBOX 5 Gallon Flexible Water Tank (actually a hard‑sided polymer) mount securely to the chassis, resist punctures and keep the water cool. The downside is weight and the need for custom brackets. I bolted two 5‑gallon units under the bed using U‑bolt mounts – a simple DIY job with a drill and a bit of metal.
Flexible Bladder Tanks
Bladder tanks (e.g., Camco 7‑Gallon Fold‑Away Water Tank) are lightweight and can be stored flat when not in use, freeing up valuable cargo space. However, they can sag over time and are more vulnerable to UV degradation. I keep a bladder tank as a “reserve” that I fill at each stop‑off.
Hybrid System – The Best of Both Worlds
My final setup uses a 10‑gallon rigid tank for the shower and a 7‑gallon bladder for cold water refill. The rigid tank provides stable pressure, while the bladder adds flexibility for longer trips where water sources are scarce.
Pump and Pressure: Getting a Consistent Flow
Nothing kills a shower experience faster than sputtering water. I opted for the Camco 1.0 GPM 12V Water Pump, which delivers enough pressure to fill a 10‑minute shower without draining the battery.
Installing the Pump
Place the pump close to the tank to minimize suction loss. I mounted it on the side wall of the tank compartment, ran T‑fittings, and added a 12V Pressure Regulator to keep the flow steady at 40–45 psi.
Power Management
Since I already have a 200 Ah LiFePO₄ battery bank (thanks to the Renogy 12V 100Ah Battery), I programmed a dedicated 12 V circuit with a fused 15 A breaker. The shower runs for about 0.8 kWh per session – easily within my daily solar budget.
Heating the Water without Burning Power
Hot water on a 12 V system can sound impossible, but a few clever tricks make it doable.
Instant Portable Heater
The Dometic 12V Portable Water Heater heats 5 L of water from 30 °C to 50 °C in roughly 8 minutes, drawing 600 W. I power it through a 200 W pure sine wave inverter, turning it on just before I step into the shower to avoid unnecessary drain.
Recirculating System
For longer showers, I installed a small EcoFlow 12V Recirculating Pump that pulls hot water from a heat‑exchanger coil wrapped around the battery bank. The battery’s waste heat (especially during charging) raises the water temperature by a few degrees, extending the hot‑water window.
Insulating the Pipes
Wrap all hot‑water lines with Thermo‑Sil® pipe insulation. Even a 10‑minute shower loses less than 0.5 L of heat this way, stretching the heater’s effectiveness.
Managing Grey Water and Drainage
Now that you have hot water flowing, you need a plan for the grey water that follows.
Grey‑Water Tank
I installed a 20‑gallon polyethylene grey‑water tank beneath the rear platform, with a vented pipe to prevent odor build‑up. A Shuriken 12V Pump with a 12 V 3‑gallon per minute rating pushes the water to an external dump station via a quick‑connect hose.
Gravity vs. Pump‑Assist
If your shower is above the grey‑tank, you can rely on gravity for light flow, but a pump ensures a quick flush after each use, keeping the compartment dry.
Legal Considerations
Many campgrounds require you to dump grey water at designated stations. Keep a portable “dump‑and‑go” hose kit (e.g., Camco 50‑Foot Gray Water Hose) in your van, and be ready to connect to the station in under two minutes.
Putting It All Together – A Quick Build Timeline
- Design the layout on graph paper – mark tank, pump, heater, and grey‑water tank locations.
- Mount the rigid water tank and secure the pump next to it.
- Run 12 V wiring with marine‑grade cable, install a fused breaker, and connect to the battery bank.
- Fit the portable heater, insulation, and pressure regulator.
- Seal the shower enclosure with a waterproof canvas or pop‑up tent; add a silicone‑sealed floor pan.
- Connect the grey‑water tank, install the dump pump, and test for leaks.
Conclusion – Dive In!
Building a reliable van shower setup is a marathon of small, satisfying wins: a sturdy tank, a smooth‑flow pump, a pocket‑friendly heater, and a tidy grey‑water solution. If you’ve followed along, you now have a blueprint you can adapt to any van size or budget. Ready to start drilling? Grab the products listed, pull out your power tools, and turn that cold‑water nightmare into a warm‑water haven.
Take action now: Download my free “Van Shower Schematic PDF” (link below) and share your progress in the comments. Happy showering!