Installed 5 ton air handler and condenser 18 1/2 see her unit number two upstairs third-floor flushed copper and drain remade Plenum flushed copper flush drain nitrogen test to 400 psi G vacuum microns below 500 started up system and charged to factory spec unit running to SPEC heater and not marked a new air handler do that we never gotA secondary heater will need to return with secondary heater and double check breakers they respond with said heater we are unsure of the amps the heater would need so we are unable to change breaker accordingly homeowner unresponsive and not able to reach customerVia call will need to contact customer to collect remaining balance