Types of water heaters ?


  1. Electrical Instant Water Heater
  2. Electrical Storage Water Heater
  3. Electrical Tankless Water Heaters
  4. Solar Water Heaters – Hybrid Electrical and Solar Water Heaters
  5. Heat Pump Water Heater
  6. Gas Water Heater


Instant Water Heaters

These Heaters are fast and quick in heating water, it with a power consumption of 3000 watts/3.0KW or 4500 watts /4.5kw most brands instant water heaters have an height of approximately 1.2 to1.4 feet , instant water heaters capacity range from 1 litres to 10 litres, the most ideal size in an instant water heater is 3 Litres that is preferred by almost everyone, which is perfect for kitchens, restaurants, saloons and washing clothes, instant water heaters can be used for bathing but cannot be used using a shower as water output is not more than 6 litres every minute usually works well if you turn the tap to fill a bucket of water which would take about 10-15 Minutes.


A Storage Geyser water heater is slow at heating but has enough output of Hot water which can be used for a shower bath, Jacuzzi, bathtub and shower panels etc. storage water heaters range from 15 litres to 100 litres. Water is usually stored in the inner container which keeps the water warm for long period this saves a lot of power, once the water is hot the reheating time is quicker which enables it to give sufficient output of hot water in the second cycle of heating.

 

Electrical Tankless Water Heaters

These Heaters are faster than the instant water heaters - Tankless water heaters heat water directly without the use of a storage tank. When a hot water tap is turned on, cold water travels through a pipe into the unit passing by an high voltage electrical heating element which usually consumes upto 5kw of electricity that heats the water. As a result, tankless water heaters deliver a constant supply of hot water. You don't need to wait for a water like an instant or storage tank to fill up with enough hot water. However, a tankless water heater's output limits the flow rate and consumes higher power compared to an electrical instant or storage water heater or instant water heater.

 

Solar Water Heaters – Hybrid Electrical and Solar Water Heaters


ETC (Evacuated Tube Collector) Solar water Heater
ETC (Evacuated Tube Collector) Glass lined solar water Heater 
FPC (Flat Plate Collector) – Pressurized and Non-Pressurized 


A solar water heater has a very simple principle of heating this water heater absorbs light using either a flat plate collector (based on copper pipes inside the glass tubes) or an evacuated tube collector (based on glass tubes) which is placed on the roof and converts it into heat. The heat is then passed onto a water tank. This exchange is triggered by the thermal regulator that controls thermal pump, but exclusively when the collector is hotter than the water in the tank. This avoids overheating.


Hybrid Electrical and Solar Water Heaters


When there is insufficient sunlight, the water can be heated by a backup system in the solar storage tank which follows the same principal of an electrical storage water heater the water in the tank is heated to the required temperature which a pre-set on the thermostat and cuts off automatically. Since the thermostat is set at a temperature the cut-off temperature would remain constant throughout the year.
 

Heat Pump Water Heater


Heat pump water heaters use electricity to move heat from one place to another rather than generating their own heat like a traditional electric water heater. This makes them two to three times more efficient. Think of a heat pump water heater as a refrigerator working in reverse.


A refrigerator pulls heat from inside a box and dumps it out to whatever room it is in. An electric heat pump water heater pulls heat from the surrounding air and dumps it, at a higher temperature, into a storage water tank connected to the heat pump. Heat pump water heaters are sometimes called “hybrid