In this video
- The unit plugs directly into solar panels via simple MC4 connectors, with no batteries, inverter, or separate controller involved
- Dave shows the same unit also has a standard plug for optional grid-power backup
- The indoor display confirms the system is running on solar and set to 24°C (about 72°F)
- As a heat pump, the unit provides both heating and cooling, and Dave checks the coil temperature to show it's actively heating
- Even with long shadows on a February afternoon (less than full sun), the four panels keep the unit running and heating the coil up to roughly 100-132°F
Questions this video answers
Can a mini-split air conditioner really run entirely off solar panels with no batteries?
Yes. In this video, an Airspool 12,000 BTU solar heat pump is plugged directly into four solar panels with no batteries, inverter, or charge controller attached, and it runs and heats normally.
Do I need a battery bank to power a solar air conditioner?
No. Airspool's DC inverter mini-splits are designed to run directly off solar panel output, so you don't need a battery bank, inverter, or voltage controller to operate the unit off-grid.
How do the solar panels connect to a solar mini-split unit?
The panels connect using standard MC4 connectors, the same plug-and-play connectors used throughout the solar industry, making the hookup simple without extra wiring or equipment.
Can a solar-powered air conditioner still work on a cloudy day or in winter?
In the demo, the unit keeps running in February with long, low-angle shadows and less than full sun, showing it can still operate on partial sunlight, though output and heating speed will vary with available sunlight.
Does a solar mini-split also provide heat, not just air conditioning?
Yes. It's a heat pump, so it handles both heating and cooling. In the video, Dave shows the coil already warming into the 80s and climbing toward 100 to 132 degrees as the unit heats the space.
Can this solar air conditioner also run on regular grid power if needed?
Yes. The unit has a standard plug for grid power as a backup option, but in this demonstration it's disconnected from the grid and running entirely on solar.
Transcript
Read the full transcript
Hi folks, I'm Dave. I'm with Airspool, and I'm going to show you just how easy it is to run an Airspool 12,000 BTU solar-powered heat pump entirely off of solar.
Okay, you'll notice this is the plug. This is if we were going to plug it in for backup grid power, but in fact, right now we're going to plug in the panels and have it be entirely off of solar. So these are MC4 connectors, and that's it. Okay, so right now the unit's plugged in to solar, to these four solar panels yonder.
But is it plugged into the grid? No. Are any batteries attached to it? No. Is there any other type of voltage converter, inverter, or controller? No.
Okay, so now we're going to turn the unit on. You hear it click on, and now we'll go downstairs and see how we do.
Plenty of sun here. You can see the shadows are getting long, getting late in the day since it's February, so not 100% solar, but let's see what we can do.
And here's the inside unit. You'll see this indicator showing that it is running off of solar, set to 24 degrees Celsius, that's around 72 degrees Fahrenheit. We still need heat this time of year, so it is a heat pump, it does both heating and air conditioning. And the coil already, it's 80-some degrees, so that'll heat up. This time of day, probably up to about 100 degrees; midday, about 132 degrees. So not bad off of four panels. Thanks for your time.
