I've got 3 estimates for mini-splits. 2 of them call for 1 outdoor condenser. Why would the other call for 2 outdoor units?
Outdoor 1 (Right): 20,000 Btu Multi Zone Hyper Heat Pump Model: MXZ-2C20NAHZ
Indoor 1 (2nd Floor BR): 9,000 Btu Air Handler Model: MSZ-GL09NAU1
Indoor 2 (2nd Floor): 15,000 Btu Air Handler Model: MSZ-GL15NAU1
Outdoor 2 (Right): 18,000 Btu Single Zone Heat Pump Model: MUZ-GL18NA
Indoor 3 (Living Rm): 18,000 Btu Air Handler Model: MSZ-GL18NAU1
Condenser - Supply and install one (1) Mitsubishi® high efficiency MXZ suitcase style side
discharge outdoor condensing unit. The MXZ-3C30NAHZ outdoor unit uses Inverter Technology (Variable Frequency Drive) to provide exceptional indoor cooling and heating comfort. By responding to indoor temperature changes, this system reduces power consumption by varying the compressor speed for extra energy savings. The system performs only to the levels needed to maintain a constant and comfortable indoor environment. To be installed on a stand at the back of home.
Install Bryant Heat Pump 3 indoor wall mount unit with 1 outdoor. 2 up stairs in the
attic space( 12,000 btu, 24,000btu). 1 down stairs on the main floor (24,000btu).
Indoor Units - Supply and install two (2) Mitsubishi® high wall mount indoor evaporator units.
One MSZ-FH12NA to be installed in the living room, and one (1) MSZ-FH18NA to be installed in
the 2nd floor back living room. Computerized control removes excess moisture without lowering
the temperature, providing healthier, more comfortable air conditioning with greater economy.