Tying to compare a hybrid heat-pump type water heater to a condensing gas tank type water heater, particularly with respect to efficiency. the Heat-pump type has a $500 BGE rebate, and installation would be far easier.
Looking at a Rheem XE80T10HD50U1 (EF 3.7) or 80 Gallon Accelera 300 E Residential Heat Pump Water Heater
from Stiebel Eltron (EF 3.39 Vs a gas unit (condensing?)
i do not know which if the heat -pump type is more efficient than condensing gas, and which is less expensive to operate. The benefit of the heat pump hybrid is that I can place the HWH next to the behemoth furnace in the basement drawing some heat from the metal run of the furnace flue. Condensing gas I would have to relocate and have to run a new vent and breather.
Have an undersized 40 gal normal gas tank heater installed in 2008. Even with water saving shower heads we cannot get two consecutive showers. At some point I will have to replace, but may wait until failure,
I asked here on the forum before about condensing gas tank type vs tank-less. Naturally the puppet movie was shared - It is funny I have to admit. https://forum.heatinghelp.com/discussion/157853/age-old-question-tank-vs-tankless#latest
Here is the rub - a tank-less heater will require me to change my gas meter thanks to my IMMENSELY over sized 1969 American Standard boiler rated for 750 EDR with 400 EDR of radiator surface area. We have a gas dryer (22 k BTU), gas water heater (40 k BTU), and a gas cook top (50 k BTU) in addition to the gas boiler (300k BTU). This totals 412 k BTU on a 415 CCF gas meter. I have thoroughly cleaned the boiler and I am working on a solenoid on the vent to create natural vacuum and process controller to increase efficiency and prevent cycling on pressure (usually only happens when trying to raise temp too much). I see no reason to replace the boiler unless it shows some sign of failure.
Putting in a tank-less therefore means a new bigger meter. I would prefer not to have to pay BGE to do that, so I would not consider a tank-less unless the furnace has already been replaced.
thanks to the group for sharing your knowledge