Many RV owners who use traditional tankless water heaters run into the same frustration: when you turn on the faucet, the water temperature swings from cold to scalding hot, especially if you’re turning the water on and off in short intervals. That inconsistent experience can take the joy out of RV life.

This is exactly where a tankless water heater with a built-in mixing tank comes in. Fogatti, a brand dedicated to advanced RV hot water solutions, has innovatively integrated a mixing tank into its tankless water heaters—bringing a smoother, more comfortable hot water experience to RV travelers.

Let’s take a closer look at what a mixing tank is and why it makes such a big difference.

1.What Is a Mixing Tank?

In traditional home plumbing, a mixing tank stores a small amount of pre-heated water and blends it with incoming cold water. The result? A more consistent, stable water temperature.

Applied to an RV tankless water heater, the mixing tank works like this:

A.Pre-heated storage: A small reserve of hot water is always ready.

B.Smart blending: The hot water in the tank mixes with cold water to prevent sudden spikes in temperature.

C.Smooth transitions: When the faucet is turned on and off frequently, the mixing tank acts like a buffer, stabilizing water temperature immediately.

Think of the mixing tank as the “shock absorber” of a tankless water heater—it ensures both instant hot water and consistent flow, giving you a home-like hot water experience on the road.

2.Benefits of a Built-in Mixing Tank

A.. Steadier Water Temperature – No More Hot-Cold Surprises

Without a mixing tank, hot water often starts cold, suddenly spikes, and then finally levels out. That’s a nightmare in the shower. With a mixing tank, the stored hot water bridges the gap, blending smoothly with newly heated water to prevent those sharp temperature swings.

B.. Shorter Wait Time – Greater Efficiency

Regular tankless water heaters take a few seconds to ramp up, sometimes longer. With a mixing tank, hot water is available instantly. This saves both time and water—something every RV traveler knows is precious.

C.. Better Energy Efficiency

A standard tankless heater may cycle on and off frequently as it tries to stabilize temperature, wasting fuel or electricity. The mixing tank reduces that constant stop-start operation, improving energy efficiency and cutting down on propane or power usage.

D. Versatile for Different Uses

Showers: Consistently warm and comfortable.

Kitchen cleanup: Hot water on demand, no waiting.

Quick rinses or coffee prep: Even short bursts of water stay stable.

This versatility makes it far more user-friendly than a standard tankless heater.

E. Longer Equipment Lifespan

Constant fluctuations in temperature and pressure can wear down heater components quickly. The mixing tank cushions these changes, helping extend the life of the system.

3.Mixing Tank vs. Standard Tankless Water Heater

Feature	With Mixing Tank (Fogatti)	Standard Tankless
Startup Speed	Instant hot water	Several seconds of wait
Temperature Stability	Steady, no big swings	Inconsistent, pressure-sensitive
Energy Efficiency	Fewer on/off cycles, save fuel/power	Higher consumption
User Experience	Comfortable, reliable	Fluctuating, less pleasant
Lifespan	Longer, less wear	Shorter, more wear

 

4.Who Benefits Most from a Fogatti Tankless Water Heater with Mixing Tank?

A.Long-distance RV travelers – Comfort is key when you’re spending weeks on the road, whether in the desert, mountains, or cold climates.

B.Families or small groups – When multiple people need hot water back-to-back, the mixing tank keeps it steady for everyone.

C.Energy-conscious users – Save propane or electricity without compromising comfort.

D.Anyone who hates waiting – Instant hot water on chilly mornings or late nights makes all the difference.

5.Conclusion

For RV owners, hot water isn’t just about comfort—it’s about efficiency, resource management, and even safety. Fogatti’s RV tankless water heaters with a built-in mixing tank, such as the Fogatti InstaShower 9 Pro, solve the biggest pain points of traditional designs by delivering faster, steadier, and more energy-efficient hot water.

If you want a hot water experience on the road that feels just like home, upgrading to a Fogatti tankless water heater with a mixing tank is the smart choice.