For heat, probably S9s or S19s. Either scattered throughout a larger house or directly fed into a heat duct for a central air setup.

For energy efficiency, Bitaxe's latest 601 gamma BM1370 (something like 15-16J/TH)

[Ask nostr:nprofile1qqstrcgctzz2d52thl8r3xwt205pswkauep0yexsla83w3fhrcrpxnqpz4mhxue69uhhyetvv9ujumn0wd68ytnzvuhspwqng8 for deets]

For dual use, ApolloMiner V1/V2 (can also be used simultaneously as a miniPC built on Ubuntu I believe)