I need a new A/C or heat pump with a hyrdronic air handler - OxBox any good? Suggestions?

[Clydesdale6]

My a/c condenser quit and I am considering upgrading to a heat pump. It is a 4 ton unit. My hot water boiler guy, who I really like, said he can install an OxBox system. I had never heard of it, but apparently it is made by Trane. I have a Trane unit at another location and have been very pleased with it. Any feedback on OxBox or recommend another brand? Thanks.

 

[Fitter30]

Im not familiar with oxbox but looks like builders grade up to 16 seer with a ten year warranty. All heat pumps lose capacity as outside temps drop. Normally hp are tested at 47° and 17° but the factory has info for colder temps. Minimum ac seer 14, hp 15 seer & 8.8 hspf for northern part of the country. Check with your electric company for rebates and a energy audit that includes a blower door test.