Differences Between Older Rinnai Tankless and New Rinnai Tankless

Older Rinnai TanklessNew Rinnai Tankless

Look at the difference between older Rinnai tankless and new Rinnai tankless water heater. The photos show that the old units had a male end for vent attachment. The new ones have a female end for vent attachments along with a built in condensate trap. If you need a replacement heater your may have some venting to replace at the same time.