Tankless Water HeaterEfficiency2025-11-20
Tankless Recirculation for Instant Hot Water
Recirculation keeps hot water ready at the tap, cutting wait time and water waste.
One common tankless complaint — waiting for hot water — is solved with a recirculation system.
How recirculation works
A pump keeps hot water circulating (or primed) in the pipes so it arrives quickly when you open a tap, reducing the wait and the water wasted down the drain.
Options
Some tankless models include built-in recirculation; others use an external pump with a dedicated return line or a crossover valve. We recommend the right approach for your home.
Key takeaways
- Recirculation cuts hot-water wait time
- Reduces water waste at the tap
- Some units have it built in
- Helps minimize the cold water sandwich
Need help with your tankless water heater?
Licensed, gas-certified technicians serving Greater Vancouver since 1999. CombiBoiler.ca — A division of ROMA Heating Ltd..
Frequently asked questions
More Tankless Water Heater articles
Tankless No Hot Water: CausesNo hot water from a tankless unit can be ignition, gas supply, scale, or an error-code lockout.Tankless Water Heater LeakingTankless leaks usually come from fittings, the isolation valves, or internal components — not a failed tank.Tankless Water Heater Error Codes ExplainedTankless error codes point to ignition, flow, venting, or scale issues — here's how to read them.Tankless vs Tank Water HeaterTankless gives endless hot water and saves space; tanks cost less upfront and handle big simultaneous demand simply.Tankless Descaling and Hard WaterAnnual descaling protects tankless performance and prevents scale-related faults in hard water.Tankless Installation Cost in VancouverWhat a tankless water heater costs installed in Greater Vancouver, and what drives the price.
More from our knowledge base
Furnace Won't Turn On? Causes and FixesFurnaceFurnace Blowing Cold Air: What to CheckFurnaceWhy Your Furnace Short-Cycles (and How to Stop It)FurnaceNo Heat? Emergency Furnace Repair GuideFurnaceFurnace Making Strange Noises: A Sound-by-Sound GuideFurnaceAnnual Furnace Maintenance ChecklistFurnaceAll ArticlesBrowse the full library