My system was installed in 2008. 2.5T split closed loop non-pressurized, raised ranch, Connecticut. Hydron Module H030C10 Single stage compressor, Lennox CBX26UH-030 Air Handler Evaporator unit, and loop pump (B&D QT flow center). Raised Ranch 1400 sq ft finished space (includes heated finished basement area of 400 sq ft). Wondering what percentage savings in power consumption a variable speed system would be when i have to replace the current one. My guess would be sometime around 2032, right about when I am thinking of retiring. 10%, 20%, 30% more? Does it make sense for my small 2.5T system? I currently see that the current split systems are sized at one ton intervals, 2T 3T etc, which would mean a 3T system, but it likely wouldn't need to run at 100%, which would be a problem if it did, as my well depth (closed loop) is at 364 feet, size for 2.5T.