I got 100 LPD solar water heater of Sudarshan Saur installed in 2007.
The local dealer of Sudarshan Saur in Bhopal, Mr. Upendra Singh, is very knowledgeable person. As our area has hard water, he advised me to go for tank made of 316L grade of stainless steel.
In these 14 years, I have got the tubes cleaned twice, and the tank cleaned once. I have received very prompt & good service.
My electricity bill came down after installing SWH.
The only time I face problem is when the weather is cloudy for 2-3 days continuously.
I advised my friends & neighbors to install this SWH, and they too are happy.