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I have water tank with 1 meter cubic capacity and a UV C lamp 32W. how long does the UV C lamp need to be turned on to do an effective germicide irradiation on my water tank to kill bacteria, etc, but most importantly, spores of mold, and fungi which would clog the pipes. I assume that once the...

Hi all, I'd like to know how much CO2 is produced by a tankless gas water heater? I'm sure it's nowhere near danger level. this is a Paloma PH-5RX, the flame is set to minimum. How much CO2 is being emitted per minute? just wants to know the estimate. my folks are "concerned" about CO2...

Hi all, I'm installing an instant gas water heater, and right now, I'm confused which pipe should I use for hot water delivery, PEX or PPR. what are the pros and cons of both? or perhaps there are other alternative (excluding copper or any other metal pipe of course) thanks

Hi all, in this diagram, I'm wondering if there's any difference at all (performance, electricity consumption, etc) between pump position 1, 2, 3 and 4? assuming the exact same pump (shallow water pump) is used for each of the positions. thanks

Hi all, I'll put a diagram of my house to make things clearer my water heater (WH) is of type paloma PH-5RX. Ideally, it needs pressure of 1 bar, but minimum working pressure is 0.2 bar. the water from local water mains can reach about 1 m above second floor, so that's about 0.2 bar when it...

Hi all, I'm planning to install a gas water heater, but the local water mains can only output like 0.5 bar, while the ideal pressure is around 1.2 - 1.8 bar. another thing is that there's a height difference of approx 1m between my local water mains and my house (my house being higher than...

Hi all, I have some assumptions regarding gas vs electric water heater: 1. gas is safer, since if there's a gas leak, you can smell it, but with electric, you need to get electrocuted first before realizing there's some fault in the system 2. gas completely ignores power outage, just prepare...