Water Heaters, Filters & Softeners

Water Heater/ Geyser Buying Guide









If you are in the market for a new water heater, be aware that your options now reach far beyond replacing your current storage tank water heater with one just like it. Because heating water typically consumes from 15 to 25 percent of a home's total monthly energy budget, you'll discover that the best new water heaters focus on heating water efficiently.

WATER HEATER / GEYSER CAPACITY

To decide on the capacity, one needs to take into account the hot water requirement into consideration. It also depends on the application, usage / bathing pattern and number of users.

WATER HEATER TYPES - Based on storage

There are three common types of water heaters used in homes: storage water heaters, tankless on-demand water heaters, and instant hot-water dispensers.

Storage water heaters(Geysers)

Electric storage water heaters are the most popular models in India. Storage water heaters using oil or gas are not as popular in India. You should check energy efficiency of these geysers.



Tankless water heaters



Tankless water heaters heat water without storing it.





WATER HEATER REVIEWS





Instant hot water dispensers



Instant Hot Water Dispenser


Instant hot water dispensers, designed to deliver small amounts of hot water, are typically located at the kitchen sink.

WATER HEATER TYPES - Energy Source

Electric Water Heater

Cons
These are primarily of 2 types of electric water heaters:

Electric Instant Water Heater

These are good for kitchens or in bathrooms where the tempature does not vary significantly during the course of the year . The hot water flow-rate from these water heaters is limited and thus these are not ideal for showers.

Electric Storage Water Heater

These come in vertical (wall mounting and floor standing) and horizontal configurations. Horizontal water heaters are more suitable for installation where the height of the celing is low or the installation is required in the loft.

Cons

Gas Water Heater

Gas Water Heater


Pros

Cons

Solar Water Heater

Some Solar Water heaters also come with an option of electric or electric heating as backup that can be used on cloudy days.


Solar Water Heater


Pros

Cons

Also see Solar Water Heater Buying Guide

INNER TANK CONTAINER MATERIALS

You should consider the following materials for inner containers.

Stainless Steel

Pros

Copper

  • Copper is a good conductor and hence can get heated faster if the water is heated indirectly.(Check the heating elements section below)


  • WATER HEATER BODY AND INSULATION

    PUF or Glass wool Insulation

    PUF is better than glass wool as it retains the temperature of water for a longer period of time, eventually saving 40% energy. This results in higher cost savings also.

    Polyproplyene Body

    Polypropylene body prevents corrosion leaving no room for rust ensuring its longer life.

    Metallic Body

    Metallic body painted with a powder coating process is superior to the liquid painting process, as it generates a better layer thickness and is longer lasting.

    WATER HEATER SAFETY AND OTHER FEATURES

    Thermostat: An externally adjustable capillary thermostat or stem type thermostats are usually provided.
    Thermal Cut Out: An additional thermal cut-out is provided as a back-up safety measure. It restarts only on pressing the reset knob.
    Pressure Release Valve: It is fitted on the inlet pipe to release any excess pressure.
    Fusible Plug: In a rare event of thermostat / cut-out or Pressure Release Valve failure, it springs into action.

    HEATING ELEMENTS

    There are two types of heating elements used in water heaters. Indirect heating element take a longer time to heat as they do not come in direct contact with water,therefore they are less energy efficient. Tubular heating elements, on the other hand, heat the water through direct contact and are therefore more energy efficient, given the same wattage

    Copper as a heating element is good since it is a good conductor of heat and hence heats water faster.

    Also read,

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