So I have the quote for both a Climatemaster TE22 and TZ30 to be installed in my new construction home that should break ground in the next 3-4 weeks. Both will be the exact same configuration with size and hot water, the only difference being $1800 more expensive for the TE30. Looking over the specs for a TE30 vs a TZ22 in a horizontal loop, they are not too far off from each other. Our electricity is cheap, I think around $.07 /kw, so that is not a huge factor. I am also not concerned with the stainless steel look since it will be tucked away in the basement. Is there a good reason to go with the more expensive TE30? For all intensive purposes, looks and a little efficiency are what we would be sacrificing from what I can see..... I am thinking the efficiency difference will take the entire life of the system to pay for itself for the TE30, by then I might be dead and will not care! One other question is that I don't believe there is a hot water buffer tank in this setup. I am thinking of going with the TE22 and have then do a buffer tank as well. If my thinking is correct, this should help save on electric costs in hot water production, maybe more so than going with the TE30 would save. Is my thinking flawed here? Opinions on which route to go?