I need to change out a heat pump that was sized to big. The old heat pump is a 277v single phase on a single pole breaker 22 amps. The new heat pump, a smaller unit does not come 277v single phase single pole, it only comes in a 230v-208v and would need 2 poles 18.8 amps. How can I do this without going broke, I already have to eat the costs of the new heat pump????