Thanks. I can't find good data yet, but I have a hunch it would require heat strips.So here is a 3 ton unit with a max breaker size of 31 amps.
But looking at that site, I realized there's another way to go - the top shelf Japanese brands -
The Mitsubishi PVA-A36AA7 / PUZ-HA36NHA5 is an extremely efficient version of a central heat pump split system. Designed to be superior over other brands of split systems, this unit lives up to the Mitsubishi name as one of the most prominent brands in the industry.
Hella more expensive though, but at least qualifies for the $2000 tax credit.