The parentage of my pears are a mix of table pears, asian pears, and canning pears. Here are a few hot weather/low chill varieties.
All these are fireblight-resistant varieties. Asian pears bloom earlier and will need each other, or possibly Turnbull, to cross-pollinate. Zones 5-8 (and 6-9 for Asians) .
"Harvest Queen" - Similar to Bartlett. Good productivity.
"Turnbull" - Large fruit with a crisp, juicy apple-like flavor. Long bloom period.
"Korean Giant" - Asian pear. Heavy producer of large late ripening green fruit.
"Shinko" - Asian pear. Tasty and productive. Needs thinning.