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Water Heaters


Water heaters

Water heaters are the largest class of gas appliances. Their popularity is due to low operating cost, cleanliness and convenience.

There are two basic types of direct-fired gas water heaters commonly use on the market.

  • Under-fired Storage Tank  water heater
  • Instantaneous (Tankless ) water heater

The storage tank water heaters are also separated in the three groups.

  1. Conventional  ( Natural Draft ,  Atmosferic Draft ) water heater,
  2. Power Vent water heater.
  3. Sealed Combustion (High Efficiency ) water heater.

What is the Water Heaters lifespan ?

Your water heater can operate for years and provide you with reliable hot water for your convenience.

Of course it can happen  under one condition. “Regular Maintenance”. This magic word will let you use your water heater for a long time without any problem.

In fact, corrosion is the primary reason that tanks fail. Most tanks are made of steel and some models has  glass-lined on the inside to help prevent corrosion. All water heater tanks also have an anode rod to control corrosion. The anode rod is designed to divert corrosive action away from the tank walls to the anode rod.

Replacing your anode rod at regular intervals prevent corrosion and may increase the life of your water heater.

It will cost you less to replace the anode rod than your water heater.


Very fine sand in Water Heater tank.

Hard Water

Hard water is the another enemy for


Lime build-up in Water Heater tank.

water heaters and effect their life importantly. Hard water contain sediments more than others. When sediments build-up, it can cause various problems. This can shorten the life of the tank and even lead to the failure of the unit. Sediments thickness would cause heat loss and  reduce the amount of hot water a your water heater can make. You will have more energy cost for same amount hot water, some times even not enough hot water and more pollution for the environment.


 T&P Valve

It doesn’t matter what kind of ”storage tank water heater” you have, all have a  T&P Valve (Temperature and Pressure Valve ).  This safety valve (T&P) is design to prevent a water heater from exploding. T&p valve need to check every year (good to check very six month) and need to replace every 2 year.

If  the water temperature and pressure exceeds safe limits, T&P valve opening and  release steam and reduce  the pressure. When you see water dripping from T&P valve , turn off the water heater gas valve  and open hot water tap until water gets cold. This will reduce the temperature and pressure inside the tank.

If you have electric water heater  or  power vent gas water heater also unplug cord until technician checked it.

Here are the some important youtube videos. It will help you visualize the importance of T&P valve.

This test videos perform without safety switches and T&P valve for show to power of temperature and pressure. This videos give idea to us, what can happen if safety parts doesn’t work.

( NOTE : These are a dangerous experiment videos, please never do not try to experiment yourself at home.)

“Mythbusters” Water Heater Explosion Videos
(“Mythbusters” is a Discovery Channel TV program )

First Video                       
Second Video                  
Third Video                     
FOX TV news about water heater explosion in U.S.             
Basement water heater explosion caught on camera in U.S.

When you do not have hot water or not enough hot water compare with earlier, every body turn up the temperature knob. But this is not the good idea and right solution.

Call a licence technicianCall Ignition Gas Comfort  and find out the reason before using water heater again.

Please pay attention to regular maintenance. Safety first…

If you have any problems with your water heater, for example:

Call us at (519) 574-1094
We offer water heater diagnose services ,
regular maintenance services ,
repairs services and
new installations .

We are servicing the Kitchener – Waterloo – Cambridge – Guelph and surrounding area.

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