Tankless, as the name suggests, has no storage tank, and therefore, the loss with a stand by tank and water maintenance such as damage due to water, leakages, etc., are eliminated. The majority of tankless water heaters work efficiently and have a life of around 20 years. This is high in comparison to a conventional water heater. Overall they are more efficient and long-lasting than conventional water heaters.
Two types of tankless water heaters are one that operates with a gas burner and the other with a heating element controlled with electricity to heat water.
To get hot water, when the hot water tap is turned on, cold water is pulled into the unit via a pipe. The water is then heated using either a gas burner or a heating element. This water heater never limits hot water; however, the rate of flow can be restricted. The rate of flow is usually 2 – 5 gallons per minute. When compared to electric models, the gas burner unit has higher flow rates.
Pros and Cons
Pros of tankless water heaters include:
- They are compactly sized and hence occupy less space as compared to conventional water heaters.
- These water heaters virtually eradicate losses with standby tanks such as wastage of energy when water is heated and cooled down.
- To provide hot water right away to the outlet, these water heaters are water-efficient with less wastage of water. Water need not run and no waiting time like in a conventional water heater.
- A water heater can provide hot water unlimitedly for as long as it is functioning and in its capacity.
- These water heaters anticipated lifespan is 20 years.
- The rate of flow is higher than conventional water heaters.
Cons of tankless water heaters include:
- These water heaters cannot provide sufficient hot water for uses that can be operated simultaneously like laundry and showers.
- Electric tankless water heater needs a comparatively higher draw of electric power since water needs quick heating to the required temperature.
- The water heater is equipped with a system that has modulating control of temperature. This system might not heat water at the same temperature at a variant rate of flow. This implies that there can be fluctuation in temperature that can be uncomfortable. This is true when the pressure of water is variant in different sections of your residence.
- Gas water heaters that are tankless ought to be vented to the exterior with a conventional exhaust or a direct vent. If the unit carries a pilot light, then there can be energy wastage, unlike a conventional heater where the water is heated with a pilot, and hence, the tank water is not wasted.
With a high lifespan and large rate of hot water flow in a minute, Tankless water heater can provide the user with lots of savings like water efficiency, fuel efficiency, and so on. The energy used for heating minimizes the costs in a tankless type of water heater by 10-15 percent.