Checked all operations in the heating mode. Found the water heater to be leaking gas out of the gas valve. Also spoke with customer about upgrading their filter at this time for the furnace. Cleaned all safety sensors and performed a combustion analysis on furnace. Washed out the outdoor air conditioner and replaced the failed capacitor upon customers request. Both furnace and air conditioner were tuned up at this time did also find out the control system for the heat pump side of things has failed furnace and air conditioner are operating at this time.