Gas Continuous Flow Hot Water Systems

A gas continuous flow (also called instantaneous or tankless) system heats water on demand as it flows through the unit, rather than storing it in a tank. A gas burner fires up the moment you turn on a hot tap, so you get endless hot water and never run out.

Often, yes. Because a continuous flow unit only heats water as you use it, there are no standby heat losses from a stored tank. Running costs depend on your gas rates and usage, but continuous flow is typically efficient for most households.

Continuous flow units are sized by flow rate in litres per minute (e.g. 12L, 16L, 20L, 26L, 28L) — based on how many hot taps or showers you run at once. As a guide, smaller households suit 12–16L, while larger homes with multiple bathrooms suit 20–28L. We'll help you choose the right size.

The 50°C models are preset to a safe 50°C delivery temperature (ideal where tempering is required, e.g. bathrooms), while 60°C models store/deliver at a higher temperature. Our team will recommend the correct model for your installation and compliance needs.

Both. Rheem continuous flow water heaters come in natural gas and propane (LPG) models, with optional remote temperature controllers for the kitchen and bathrooms.