I was looking for a comprehensive review on instant gas geyser / water heater, however, I couldn't find one. based on the information I gathered and taking some calculated risk, I bought an instant gas geyser, I want to give my two cents on the subject so that other like me can benefit from it.
I have a 12 marla house, with 3 wash rooms and a kitchen. I live on 1st floor. I was using a conventional gas geyser, 35 L capacity and it leaked water a few days ago, so the natural question was, should I go for instant geyser (electric or gas) or conventional one. Below are the consideration which I had and also my review on geysers
Now I installed InstaGas geysers which is only natural gas, Canon one supports both LPG and NG and they both cost the same. I installed 12 Liter, and capacity only determines the flow of water. Gas pressure today was good and water heater performed even better than conventional geyser. While using shower and kitchen mixer simultaneously, water pressure dropped. However, water was hot enough that I could take shower. mind you peak winter is yet to come so this peak performance is yet to be tested. for 99 % of the time 2 taps can be used simultaneously, however, using a tap while someone is showering will reduce water pressure. If anyone has any question, please feel free to ask. Just wanted to help someone trying to make a decision. For me it worked and there is marginal difference in overall operations. pros are unlimited hot water supply, cost effective, space saving, cost saving on procurement, option of multi fuel (NG & LPG), Cons, water pressure drop on simultaneous usage of multiple taps (shared with conventional geyser though).