Water Heater Recommendations?

I am looking for recommendations for a 40 or 50 gallon natural gas water heater. Ours is at least 16 years old, and has recently started making noises like there are marbles rolling around inside. Also, we have noticed a gradual, yet significant, reduction in the amount of hot water we get.

I've investigated going tankless, but it really won't work in our situation. We live in a rowhouse and would have a very hard time finding any place we could vent the unit according to code. Additionally, I just don't want to fork over the cash upfront at this time.

Hello and welcome

This is an British site but I'm sure someone will have a suggestion for you!

Is a 'rowhouse' floating on the water? Not a term I've ever come across!

in the uk we have an excellent manufacturer but i am not sure how they would be able to help over seas. ?

what about solid fuel as a sourse of heat try emailing terry he is an excellent resourse ..

link here.

Marine Installations

A variety of Stoves, Cookers, Boilers, and underfloor heating systems for all types of boat.