Hi all:

My name is Gabriel and I'm glad to find this forum. I'm a project manager for a consulting engineering firm in Los Angeles. I specialize in large upscale homes, some as large as 80,000 sf and lately I have started specifying Daikin VRV systems and have attended the classes, but on some of my larger jobs, the contractors want to subsitute the Daikin for the Mitsubishi City Multi units.

Both systems are close, but Mitsubishi claims less installation costs because their copper fittings for the refrigerant pipes are threaded not brazed.

I have to write a big letter tomorrow explain the difference between the two systems. Any one in here ever study these two systems?