Does it run on HV/ima battery? Or just through the engine.

Thanks. Interested with a 2006 HAH, 140000 miles.

What to look out for when checking it out?

 

2006 or 2007?

Standard A/C compressor. Not sure if it's in in common with other models, but it probably is:

https://www.hondaautomotiveparts.com...a-c-compressor

IMHO, pass on it. Used high mileage hybrids are a headache. They've given up all their benefit, and now they represent a risk of high maintenance confidence, i.e., the previous owners got all the savings. You're certain to get far more expense associated with any savings. Buy a different vehicle.