Tankless Water Heaters

Tankless Water Heaters

Description

Instantaneous (also referred to as “tankless” or “on-demand”) water heaters heat hot water on an as-needed basis. These units do not store hot water, eliminating the energy load required to keep a tank of water hot enough for use at any time (the ‘stand-by’ energy loss). The units are wall mounted and relatively compact. Natural gas, propane (LP), and electric versions of tankless water heaters are available with varying energy efficiency. Source CMHC

Pros	Cons
Heats water only as it is needed (on-demand)	Life style changes (No more showers, dishwasher and washing machine running at the same time)
Endless hot water**	Up front expense greater than a standard water heater or power vented water heater. $$$$
Reduces utility bills through energy saving ‘on-demand’ features*	**Modulating water temperature when flow rates exceed the maximums
Frees up floor space as the units are relatively compact and are wall mounted	Electricity used over standard water heater
Lowers on-site emissions from fuel-fired systems. Reduces consumption of non-renewable fuel resources.	No hot water during a power outage

 

 

Annual Energy Cost Savings — 58% gas hot water to 92% instantaneous water heater
	Vancouver	Calgary	Toronto	Montreal
Annual Energy Cost — Tank	358	227	302	451
Annual Energy Cost — Instantaneous	207	136	175	270
Annual Energy Cost Savings	151	91	127	181

Source CMHC

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