I'm looking to replace my 20-year-old gas water heater since it's getting close to its end of life, but it's still running fine for now. With some plumbing work coming up (specifically, I'm switching from poly b), I'm curious if I should upgrade my water heater. Is there a noticeable difference in efficiency between brand new models and ones from two decades ago, aside from them being better insulated? Also, keep in mind I live in a very cold climate where winter temps can drop to -30 degrees.
2 Answers
If you're thinking of upgrading, have you considered a heat pump water heater? They're way more efficient, around 300%! Traditional gas units max out around 90% efficiency. Just keep in mind that HPWHs run on electricity instead of gas, which might be a factor depending on your energy source. Plus, in extremely cold climates, you might face some performance issues with HPWHs, but they're really worth looking at if saving on energy is your goal.
Honestly, newer gas water heaters generally have about the same efficiency as the older models. After 20 years, it's probably a good idea to consider a replacement just for peace of mind.