How Does a Mini Split AC Work
How does a mini split AC system work? Better yet, what is a mini split?
A mini split is an energy-efficient heating and cooling system that operates based on something called “zones”. Essentially, each room in your home is a “zone” and requires its own mini split for proper heating and cooling.
But how does a mini split work?
How Does a Mini Split AC System Work?
Ductless mini split systems work like conventional A/C systems but have a few primary differences.
For example, a mini split system has individual indoor units located in each room or “zone” in the home. Central air conditioners push and pull air to a central indoor unit. Mini splits have their own individual fan and evaporator unit. They are connected to an outdoor compressor unit via refrigerant lines.
Air is cooled on its way into the compressor, and it is then returned to the indoor unit to circulate in the room.
How Does a Mini Split Heat and Cool without Ductwork?
No ductwork is required for a mini split. Instead, refrigerant lines are the primary piece of equipment that is installed.
Refrigerant lines only require holes approximately 3 inches in diameter, and they don’t damage your home.
Aside from that, if you’re wondering how do mini split air conditioners work, there are a few components to be aware of.
Inverter-driven compression is one of the primary drivers of mini split equipment. They also have zone temperature control, which makes them highly flexible for a variety of spaces.
Additionally, mini splits have a heat pump functionality for year-round use.
Why Are Mini Split Systems More Efficient Than Traditional HVAC?
Now that you have an answer to how do mini splits work, the next question is, are they more efficient than traditional HVAC units?
The answer is, yes.
Because mini splits use inverter technology with variable speed operation, provide zoned cooling that prevents wasted energy, and have no energy loss through ductwork, homeowners who install them can expect a lower electricity bill.
Check out what the government has to say about mini split ACs and HVAC units here.
Of course, to make the most of your mini split, make sure to install the right size for your space. Some common sizes include 12,000 BTU mini splits, 18,000 BTU mini splits, and 24,000 BTU mini splits.
Frequently Asked Questions
Do mini splits have to be on an outside wall?
No, but experts recommend it.
Do mini splits use a lot of electricity?
No. Mini splits are highly energy-efficient and use less electricity than HVACs.
Do mini splits have to vent outside?
No. They use refrigerant lines to transfer heat.
Where should you not install a mini-split?
Don’t install mini splits in unventilated spaces or areas that have direct sunlight or heat sources.
Does every room in the house need a mini-split?
Not always. It depends on the layout of your home. Open-concept homes will need fewer mini splits.
Does a mini-split cool a whole house?
Yes, a mini split can cool an entire house with proper sizing.
Do you have to cut hole in wall for a mini-split?
Yes. But not a big one. Only about 3 inches.
Do mini splits need to be covered in winter?
No, but using a breathable cover helps protect it from debris.
Does each mini-split need its own condenser?
No. An outdoor condenser is sufficient for supporting multiple indoor units.