I haven't seen any posts about the multisplit device here, since I got it installed last week I thought I would write up a small "review" of it.
The outdoor device is paired with two RAS-B13E2KVG-E indoor units, they are placed in two bedrooms (12.5m^2 and 21.6m^2) where the primary intention is cooling in the summer. The choice was made because we wanted a single outdoor unit for aesthetics.
If you look at my previous post history you will also see that we had a Panasonic in our kitchen that there was a lot of trouble with, so we made some changes in where the heatpumps are placed. The Daikin that was in the largest bedroom will be moved this week, so we have to use the Toshiba for heating (The indoor unit is placed so it can blow air into the hallway and heat up the rest of the house).
So a small comparison to the Panasonic HZ25ZKE:
- Defrost time: The outer cell is completely clean after 5 minutes and the pump starts to blow warm air again after 8 minutes. For Panasonic it was 16-20 minutes from it stopped blowing air until it started to blow warm.
- Defrost need: The outer cell is always packed with thick ice when it goes into defrost, I have not yet seen any unnecessary defrosts as I often did with the Panasonic.
- Power consumption: Thanks to P-SEL, it is easy to limit the compressor to what is actually needed, although it is running at 100% now and there are initial large "rushes", but it limits itself fairly quickly to match the previous output it had, thus no overheating and short cycling, so have not yet seen the need to limit it.
- Power usage: The unit has regulated itself down to the minimum declared input several times when the heating demand is low, this gives more even workload on the compressor, the Panasonic never achieved the marketed numbers which caused short cycling in low heating demand scenarios. So this works really well for the two bedrooms to keep them at 17-18 degrees.
- Temperature control is fairly accurate I must say. The unit distributing air into the hallway is set at 23 degrees, the hallway is then 22.7-23.5 degrees. No need to move the indoor temperature sensor like I had to with the old Panasonic. Since the indoor units are the "cheaper" ones, it is only possible to regulate the temperature with 1 degree, but adjusting it up or down makes the compressor also go up and down in power. The same is true for when the outdoor and indoor temperature goes up or down, the compressor adjusts to the load, like one would expect (which did not happen in my case with the Panasonic, which either caused it to be too warm or too cold because of the sensor).
- Outdoor unit is very silent compared to the Panasonic. There is hardly any noise from the compressor, the fan makes a more "pleasant" sound and the unit hardly vibrates (I could see the Panasonic unit shaking and sound like a propeller plane, even on low load).
Some small remarks of the multisplit:
- When using as a primary source for heating the house with only 1 of the 2 units, the second room (which is set at 17 degrees) gets warmer than wanted, workaround is to turn off the device in the smaller room from time to time so the temperature isnt too high, otherwise it will reach 20 degrees.
- When the heating demand is high on one unit and low on the other, it seems that the compressor wants to find a "middle ground" on the power needed, thus limiting the output. Shutting off the smaller bedroom device causes then the compressor to go from 600W to 1100W which is the heating demand actually needed.
So if there is a big difference in heating demand, multisplit will give uneven temperatures in the rooms. Other than that, I must say I am very happy with the Toshiba. Although it was initially purchased for cooling, it also delivers good heat (hasnt been that cold yet, but so far it works better than the Panasonic).
I will try to give it a test when the temperature falls down in the negatives even more, but so far everything is working above expectations!
Although the units are not placed in the exact same position as the Panasonic was, I can see from the temperature and consumption graphs in Home Assistant that things are working more "correctly".
The outdoor device is paired with two RAS-B13E2KVG-E indoor units, they are placed in two bedrooms (12.5m^2 and 21.6m^2) where the primary intention is cooling in the summer. The choice was made because we wanted a single outdoor unit for aesthetics.
If you look at my previous post history you will also see that we had a Panasonic in our kitchen that there was a lot of trouble with, so we made some changes in where the heatpumps are placed. The Daikin that was in the largest bedroom will be moved this week, so we have to use the Toshiba for heating (The indoor unit is placed so it can blow air into the hallway and heat up the rest of the house).
So a small comparison to the Panasonic HZ25ZKE:
- Defrost time: The outer cell is completely clean after 5 minutes and the pump starts to blow warm air again after 8 minutes. For Panasonic it was 16-20 minutes from it stopped blowing air until it started to blow warm.
- Defrost need: The outer cell is always packed with thick ice when it goes into defrost, I have not yet seen any unnecessary defrosts as I often did with the Panasonic.
- Power consumption: Thanks to P-SEL, it is easy to limit the compressor to what is actually needed, although it is running at 100% now and there are initial large "rushes", but it limits itself fairly quickly to match the previous output it had, thus no overheating and short cycling, so have not yet seen the need to limit it.
- Power usage: The unit has regulated itself down to the minimum declared input several times when the heating demand is low, this gives more even workload on the compressor, the Panasonic never achieved the marketed numbers which caused short cycling in low heating demand scenarios. So this works really well for the two bedrooms to keep them at 17-18 degrees.
- Temperature control is fairly accurate I must say. The unit distributing air into the hallway is set at 23 degrees, the hallway is then 22.7-23.5 degrees. No need to move the indoor temperature sensor like I had to with the old Panasonic. Since the indoor units are the "cheaper" ones, it is only possible to regulate the temperature with 1 degree, but adjusting it up or down makes the compressor also go up and down in power. The same is true for when the outdoor and indoor temperature goes up or down, the compressor adjusts to the load, like one would expect (which did not happen in my case with the Panasonic, which either caused it to be too warm or too cold because of the sensor).
- Outdoor unit is very silent compared to the Panasonic. There is hardly any noise from the compressor, the fan makes a more "pleasant" sound and the unit hardly vibrates (I could see the Panasonic unit shaking and sound like a propeller plane, even on low load).
Some small remarks of the multisplit:
- When using as a primary source for heating the house with only 1 of the 2 units, the second room (which is set at 17 degrees) gets warmer than wanted, workaround is to turn off the device in the smaller room from time to time so the temperature isnt too high, otherwise it will reach 20 degrees.
- When the heating demand is high on one unit and low on the other, it seems that the compressor wants to find a "middle ground" on the power needed, thus limiting the output. Shutting off the smaller bedroom device causes then the compressor to go from 600W to 1100W which is the heating demand actually needed.
So if there is a big difference in heating demand, multisplit will give uneven temperatures in the rooms. Other than that, I must say I am very happy with the Toshiba. Although it was initially purchased for cooling, it also delivers good heat (hasnt been that cold yet, but so far it works better than the Panasonic).
I will try to give it a test when the temperature falls down in the negatives even more, but so far everything is working above expectations!
Although the units are not placed in the exact same position as the Panasonic was, I can see from the temperature and consumption graphs in Home Assistant that things are working more "correctly".