The desired product is unclear to me.
AC-coil relays might be a bit funny operated at 140Hz but
it's not really said, what's the coil drive and what's the
switched source and load.
Relays used in air conditioner systems live for inductive loads
and tend to use 24VAC coil.
Appliance relays often give different DC/resistive and AC/
inductive contact rated loads but can be used (within ratings
and properly snubbed) for both.
But I think you'd get better options if you were clear about
what your available drive signal is and the switched source
& load attributes.