Hi
I am using LPG based heater for more than 7 years, here are some observations.
1. very very cheap as compared to electric gas geyser.
2. We are 5 adults and 1 kid family and still it goes for 40-45 days. Electricity bill with electric geyser used to have 1800-2000 rupees, after gas geyser installation it was 400-600.
3. Safe till now we don't have any leakage problem or any ignition problem.
4. Need to replace battery once in a year.
What precaution need to take.
keep cylinder and unit outside (free space) as much as possible.
If it's in bathroom itself, be sure u have ample ventilation or fit one exhaust fan.
I have fitted in one bathroom and carried same pipe to another. So that I can use it from both.