Find reliable local air conditioning installation services in Quakers Hill

I want to replace my old Air Conditioner with a new one I just purchased. It's on the ground floor. The existing AC is 4.98KW Sharp. Need to be disconnected and taken. The new one is 7.1KW MHIAA SRK71ZRA. The internal unit need to be in place of the existing one. The external unit need to be placed on steel brackets on the same wall as the internal unit. It might not be exactly back to back with the internal one. Since this external unit won't be in place of the existing one, you will need to check the needed work such as how to provide power to the new external unit and install external power switch. For sure the piping and control circuit wiring will need to be encased in a trunk, and the copper tubing need to be encased and sealed to prevent moist leakage. A condensate drain need to be installed and terminate outside the building in a convenient location. Provide all needed materials, I only have the new AC. Flexible on the installation date.