Well, it depends on what county you live in as well as you personal preference. But here are a few reasons.
Fats, oils and grease from cooking go down your drains as liquids, but then solidify in your drain, creating problems...
So you know your water heater is old. But everything seems to be working OK. Do you need to replace it?
Channel 6 recently did a story on something plumbers all over have been seeing
It’s a tough choice: a tankless (demand) water heater or a solar water heater—which should you get?