If you don’t want to disturb the setup of your rooms or don’t have a tiny window wherein you can install a window air conditioner, split AC is your best bet.
Most homeowners are familiar with the setup: an outdoor unit controls a ductless indoor unit.
But these systems have evolved, and now ductless multi-split air conditioners allow you to have more than one indoor unit controlled by the outdoor unit. The indoor units can be placed in the same room on opposite ends or in two individual rooms.
Split air is beneficial for small rooms or halls that can’t accommodate central AC units (ducted systems). Split ACs are widely used in homes and offices due to their aesthetic exterior, low to no noise, and low energy consumption. After reading about fixing and preventing common issues with these units, check out our ductless AC unit cost guide.
Single Zone vs. Multi Zone Ductless AC Units
Ductless air conditioners come in two main configurations — single-zone and multi-zone. Single-zone systems consist of one outdoor unit connected to one indoor unit, ideal for cooling or heating a single room or area. Multi-zone systems have one outdoor unit connected to multiple indoor units, allowing for temperature control of the indoor air in several rooms or zones simultaneously (at different temperatures). The choice between single-zone and multi-zone depends on the size of your home, the number of rooms you need to cool or heat, and your budget.
Pros of Ductless Air Conditioners
Ductless air conditioners offer several advantages over traditional central air systems:
- Flexible zoning allows for individual temperature control in each room
- Easy installation process without the need for extensive ductwork
- Energy-efficient operation, reducing energy bills
- Better indoor air quality (since no buildup of dust in ducts)
Cons of Ductless Air Conditioners
While ductless HVAC systems have many benefits, there are some drawbacks to consider:
- Higher initial cost compared to window units or central air conditioners
- Visible indoor units may not blend seamlessly with home decor
- Regular maintenance is crucial to prevent issues and maintain efficiency
- More frequent condensate drain clogs
6 Common Issues and Solutions for Split Air Conditioners
The average life span of the outdoor unit of a split AC is 10–16 years, while that of the inside unit is 14–18 years. During that time, split cooling systems — like all home fixtures, at some point — can present some challenges.
Here are some examples:
1. AC Not ‘Swinging’
Several people using ductless mini-split systems have trouble receiving cool air throughout the room due to a malfunctioning swing mechanism.
This could possibly be due to a printed circuit board not sending current to the swing motor, or it could result from a damaged motor.
You may need to replace the stepper motor. For this, you’ll need to contact an HVAC technician.
2. AC Blows Hot Air
If your ductless air conditioning system is blowing warm air instead of cold, you need to check the condenser in the outdoor unit.
- First, look for any leakage.
- If you find your fan spinning and making a noise, you might have a leak in your refrigerant lines.
- If your AC gas is leaking, you can go ahead and replace it.
If your fan motor is not spinning, the issue could lie in the fuses or breaker located in the main panel You may need an AC expert to have a look at your AC to fix it.
3. Unit Doesn’t Drain Properly
If your split ductless units aren’t draining as much water as they did when it was new, they won’t cool your room with the same efficiency.
- Check to see whether the air filter is clogged. If it is, have it cleaned with water.
- If it’s not clogged, it might be low on gas, thus freezing up the coil.
- Let the water run for a while by setting the fan on and the AC off.
- You’ll know you’re low on gas when the water starts leaking.
You should be able to fix this on your own.
4. Outdoor Unit Making Strange Noises
If your outdoor unit is making unusual noises, such as rattling, buzzing, or grinding, it could indicate a problem with the compressor or fan motor.
Loose or worn-out parts can also cause these noises.
It’s best to have an HVAC technician diagnose and repair the issue to prevent further damage.
5. Indoor Unit Emitting Unpleasant Odors
Unpleasant odors from your indoor unit can be caused by mold or bacteria growth in the unit or drainage system.
Regular cleaning and maintenance can help prevent this issue.
If the odor persists, hire an HVAC company to clean and disinfect the unit and check for any drainage problems.
6. Inconsistent Cooling or Heating
If your ductless system is not providing consistent cooling or heating, it may be due to improper sizing, incorrect installation, or a malfunctioning thermostat.
Ensure that your system is properly sized for your space and that the installation was done correctly.
If the problem keeps happening, hire an HVAC contractor to check your thermostat and make any necessary adjustments or repairs.
3 Steps to Fix Split Air Conditioner Leaks
- Place a plastic bag around your indoor unit to prevent any water from leaking onto the floor or furniture.
- Blow air into the drain tube located in the outdoor unit, either using a vacuum cleaner or simply blowing your breath into the pipe.
- Once you leave the pipe down, dirty water should escape. You can also use a vacuum pump to do this job, as it is the most effective way of quickly draining dirty water.
Despite the fact that you need to maintain your AC system every few months, an annual tune-up is a must.
Why You Need Annual Tune-Ups
Despite the fact that you need to look into the maintenance of your mini-split air conditioner every few months, an annual tune-up is a must.
This, in turn, will reduce frequent breakdowns of your AC, avoid the extra expenditure on repairs, and enhance the life span of your air conditioner.
Air conditioners are made up of complex working components and you can’t fix everything on your own. That’s when professional HVAC help is advisable!
Final Thoughts
Ductless air conditioning has lots of nice benefits, including energy efficiency, flexibility, and ease of installation. However, you should consider the challenges, such as higher initial costs and the need for regular maintenance. By understanding the pros and cons of ductless systems, the differences between single-zone and multi-zone configurations, and implementing solutions to common issues, you can choose the best system for your home. If you’re considering a ductless mini-split heat pump system, consult with a local HVAC company to discuss your options and ensure proper installation and maintenance for optimal performance.
Frequently Asked Questions
How long do ductless air conditioners last?
Ductless air conditioners can last 15–20 years or more, assuming you keep up with yearly routine maintenance.
Can I install a ductless air conditioner myself?
Yes, its possible to install a ductless mini-split heat pump yourself. In fact, many manufacturers sell DIY kits. Still, I recommend having a professional install your ductless system to ensure proper sizing, placement, and setup.
Are ductless air conditioners more energy efficient than central air conditioning units?
Yes, ductless systems are generally more energy efficient due to their zoning capabilities and lack of ductwork, which greatly decrease efficiency.
