Mitsubishi Ductless heating/cooling
nkhandyman
| Posted in Energy, Heating & Insulation on
Hello, I am currently researching Mitsubishi’s mini splits. Aa distributor recommended model MXZ2C20 outside unit with MSZGE12NA and MSZGE06NA indoor units.
These will be the sole source of heat for the spaces (bed and bath). Looking over the specs, these units do not perform at 100% when the temp drops beow 18’F. Heat isthen produced at a diminshing scale.
I know Mitsubushi has “hyper units” that perform better at lower temps.
I live in Rhode Island (climate zone 5) . I am concerned the recommended units may not provide adequate heat when the temps dip. I know the temps in Rhode Island do not hover around 13′ throughout the winter but I have concerns.
Can anyone share their experience with these unit in climate zone 5?
Replies
How Are We To Know?
At least the distributor has some experience, and is in a position to know what works in your area.
Worst case? You add a space heater at the worst times. That's what mini-splits do- they have supplimental heating strips in them.
Look at it this way:
Let's assume you like your home to be 70 degrees. On a 100-degree day, you expect that machine to 'pump' 30 degrees worth of heat out of the house. Do you really expect that same machime to be able to pump more than 30 degrees worth of heat into the same house? I'd suspect that any time the weather gets colder than 40 that the supplimental heating kicks in.
OK, I over-simplify things a bit .... but only a little! Today's 'miracle' refrigeration fluids have very limited temperature ranges over which they work. Say what you will about old-fashioned Freon, but that stuff had a huge range! Outside of their ranges, and the refrigerants simply won't work ..... the liquid won't boil if it's too cold, and the vapor won't condense if it's too hot.