I am currently planning the air conditioning for my major renovation.
The rooms to be cooled are:
Bedroom about 15m² (160 ft²)
Office about 15m² (160 ft²)
Living room about 35m² (375 ft²) *
*also heated on very cold days in addition to the heat pump
I have chosen Bosch units for the air conditioning system.
I see two options to implement this:
Option 1:
One multisplit outdoor unit and three indoor units
Outdoor unit: CL5000M 79/3 E [7.9kW]
2x Indoor unit: CL3000iU W 20 E [2.0kW]
1x Indoor unit: CL3000iU W 35 E [3.5kW]
Price approx. 2116€
[second column]
The 7.9kW outdoor unit has a minimum cooling capacity of 3.03kW
This means that if only one of the 2.0kW indoor units runs at full power, the outdoor unit already starts short cycling (which causes higher electricity consumption and wear).
Therefore, I am considering...
Option 2:
One multisplit outdoor unit with two indoor units for the office and bedroom
Plus one single-split outdoor unit with an indoor unit for the living room
Outdoor unit (1): CL5000M 53/2 E [5.3kW]
2x Indoor unit: CL3000iU W 20 E [2.0kW]
Outdoor unit (2) / Indoor unit: CL3000i-Set 35 WE [3.5kW]
Price approx. 2376€
[first column]
The multisplit combination here has a minimum cooling capacity of only 1.7kW
As for the piping route (refrigerant lines), it basically doesn’t matter whether I install one or two outdoor units on the flat roof of the extension.
The price difference is also similar (option 2 is 260€ more expensive).
Which option would you choose?
(I have a 15kWp photovoltaic system facing west/east; still, it makes sense not to consume more electricity than necessary, and equipment lifespan is also an important factor.)
The rooms to be cooled are:
Bedroom about 15m² (160 ft²)
Office about 15m² (160 ft²)
Living room about 35m² (375 ft²) *
*also heated on very cold days in addition to the heat pump
I have chosen Bosch units for the air conditioning system.
I see two options to implement this:
Option 1:
One multisplit outdoor unit and three indoor units
Outdoor unit: CL5000M 79/3 E [7.9kW]
2x Indoor unit: CL3000iU W 20 E [2.0kW]
1x Indoor unit: CL3000iU W 35 E [3.5kW]
Price approx. 2116€
[second column]
The 7.9kW outdoor unit has a minimum cooling capacity of 3.03kW
This means that if only one of the 2.0kW indoor units runs at full power, the outdoor unit already starts short cycling (which causes higher electricity consumption and wear).
Therefore, I am considering...
Option 2:
One multisplit outdoor unit with two indoor units for the office and bedroom
Plus one single-split outdoor unit with an indoor unit for the living room
Outdoor unit (1): CL5000M 53/2 E [5.3kW]
2x Indoor unit: CL3000iU W 20 E [2.0kW]
Outdoor unit (2) / Indoor unit: CL3000i-Set 35 WE [3.5kW]
Price approx. 2376€
[first column]
The multisplit combination here has a minimum cooling capacity of only 1.7kW
As for the piping route (refrigerant lines), it basically doesn’t matter whether I install one or two outdoor units on the flat roof of the extension.
The price difference is also similar (option 2 is 260€ more expensive).
Which option would you choose?
(I have a 15kWp photovoltaic system facing west/east; still, it makes sense not to consume more electricity than necessary, and equipment lifespan is also an important factor.)