I recently got quotes for both a Water Furnace (series 5 and 7 - 3 tons
in size) and a ClimateMaster Trilogy 45 (1860). I know several people
around me that have Water Furnace systems (both series 5 and 7) and
really like them. With being at these people's houses, the thing I
immediately notice is how quiet the systems are as you really can't hear
them running. I don't know any people offhand that have the Trilogy
45. The ClimateMaster installer said he's installed a few Trilogy 45
systems so far and has several more to install in the coming weeks. He
said people love the idea of the geo providing all of the hot water and
that's one thing that has me leaning towards the Trilogy. The other
thing is that because of the variable compressor, it can output more
heating btu's than I should ever need. My heating load comes in at just
under 40,000. Since the Trilogy is fairly new, I'm trying to find any
people's experiences (good or bad) with a Trilogy system.