Answers

Tankless water heaters are great but they typically cost two to five times more to put one in a house that wasn't built for it. They frequently require gas and venting upgrades beyond what was installed for the tank. Then there is the need to flush and descale the tankless and perform maintenance every 500 hours of use. (That can vary according to how hard your water is) That is typically once a year for a family of 4-5. Even the best tankless water heaters are only able to increase the water temperature by 40 degrees at 12 gallons per minute. I love tankless but they come with a much higher cost and maintenance. Be prepared for all that or put in a Rheem Pro grade 50 gallon gas heater. For value and performance I am a fan of the PRO+G50-40N RH62