Missional Order Blog

We have a John Wood gas heater that is now 31 years old. Periodic replacement of the anode rod has given it a long life. I would like to know how long it would last (about 3 years now on last rod), but on the other hand I would like to replace it under controlled conditions on my time. So, I’m starting to look for a replacement. It will be a 50 gallon gas fired, but after that I’m open to Plumber San Antonio suggestions. I see that Energy Star has just increased their efficiency requirement to 0.67 minimum to qualify. In the past you needed a powered vent type heater to get that efficiency. Now, I am starting to see some atmospheric vent models with only a flue damper getting 0.67-0.69 efficiency and qualifying to the new standard. They would be much easier to retrofit than a power vent style.