Tankless Water HeaterComparison2026-02-20
Tankless vs Combi Boiler for Hot Water
A tankless heats water only; a combi heats your home and water in one unit.
Both deliver on-demand hot water, but a combi also heats your home. Here's the distinction.
Tankless water heater
Provides endless domestic hot water on demand but doesn't heat your home — pair it with a separate heating system.
Combi boiler
Provides both central heating and on-demand hot water from a single wall-hung unit, saving space.
Key takeaways
- Tankless: hot water only
- Combi: heat + hot water in one
- Combi saves space vs separate units
- Choose by whether you need heating too
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
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