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Frequently Asked Questions

Selecting the perfect air conditioning system for your home can be a daunting task, especially with the variety of options available. The decision largely depends on the size of your house, the style of your home, and your personal preferences. In this guide, we’ll explore the three main types of air conditioning systems—split systems, multi-head split systems, and ducted air conditioning—and help you determine which one is right for you.

Understanding Your Options

1. Split Systems

Ideal For: Small to medium-sized homes or individual rooms.
Features: Consists of an indoor unit and an outdoor unit.
Advantages: Cost-effective, easy to install, and energy-efficient. Perfect for targeting specific areas.
Considerations: Limited to cooling or heating one room or area at a time.

2. Multi-Head Split Systems

Ideal For: Medium to large homes with multiple rooms.
Features: Multiple indoor units connected to a single outdoor unit.
Advantages: Allows for individual temperature control in different rooms, energy-efficient, and flexible.
Considerations: More expensive than single split systems but cheaper than ducted systems.

3. Ducted Air Conditioning

Ideal For: Large homes or those wanting a whole-house solution.
Features: A central unit that distributes air through a network of ducts.
Advantages: Provides even temperature control throughout the entire house, hidden from view, and adds value to the property.
Considerations: Higher installation and running costs, requires significant space for ductwork.

Matching Air Conditioning to Your Home

House Size

Small Homes: Split systems are usually sufficient for smaller homes or apartments. They are affordable and can efficiently cool or heat specific areas without wasting energy.
Medium Homes: Multi-head split systems are a great middle-ground, offering flexibility and efficiency for medium-sized homes with several rooms.
Large Homes: Ducted systems are the best choice for large homes, providing consistent and comprehensive climate control.

Home Style

Modern Homes: Often benefit from the sleek, unobtrusive design of ducted systems, which can be hidden in the ceiling or floor.

Traditional Homes: Split or multi-head systems can blend well without the need for extensive renovation to accommodate ductwork.

Personal Preference

Individual Room Control: If you prefer having the ability to set different temperatures in different rooms, multi-head split systems are ideal.
Overall Aesthetics: If you want a system that is hidden and maintains the aesthetics of your home, ducted air conditioning is the way to go.


Choosing the right air conditioning system involves considering the size of your home, its style, and your personal needs. By understanding the advantages and limitations of split systems, multi-head split systems, and ducted air conditioning, you can make an informed decision that will keep your home comfortable year-round.

The answer to this question depends on several factors such as the area you want to cover, your budgetary constraints, and the layout of your house or office. By assessing these aspects, you can determine the most suitable system that meets your specific requirements for efficient and comfortable climate control.


Split system – cover single area from small bedroom to large living/lounge, the size of the split system is from 2.0kw to 9.5kw, Price range is from $2000 – $5000 installed.

Multi Head system – Multi-head split can cool and heat for multiple rooms or zones using a single outdoor unit. One outdoor unit can connect up to 6 indoor units. You can choose different indoor units as you like, wall hang, bulk head, cassette, floor standing… price range is starts at around $4,000 and can go up to $10,000 or more, including both equipment and installation costs.

Ducted air conditioning system –is designed to provide cooling or heating for the entire house by utilizing a network of ducts installed within the ceiling. Vents are strategically placed in each area to distribute air through the ceiling or floor. The system consists of an indoor unit, outdoor unit, and a pair coil connecting them. It offers the ability to create zones and selectively cool or heat specific areas as needed. The price range for the ducted air conditioning system typically begins at $11,000 and can extend to $30,000 or higher, contingent upon the size of the house and the desired performance specifications.

VRV/VRF system – VRV/VRF systems are advanced air conditioning solutions that provide efficient cooling and heating. They use one outdoor unit connected to multiple indoor units in different rooms. Each indoor unit can be controlled independently, allowing customized temperature settings and energy savings. These systems adjust refrigerant flow based on demand, ensuring efficient operation and cost-effectiveness. With precise temperature control, energy efficiency, and flexibility, VRV/VRF systems offer optimal comfort for your home or business. Estimating the installed price range for VRV systems can be challenging, as it can vary significantly based on factors such as system capacity, number of indoor units, and installation complexity. While prices typically start from $12,000, it’s important to note that they can go much higher, with some installations reaching up to six-figure costs. The final price depends on the specific requirements and customization needed for the luxury houses or individuals seeking the flexibility of independent temperature control in different areas.

The frequency of air conditioning service depends on a few factors, but as a general guideline, it is recommended to have your air conditioning system serviced


Regular maintenance helps ensure optimal performance, energy efficiency, and longevity of your system. However, if you notice any issues like reduced cooling, strange noises, or unusual odors, it’s advisable to have your system inspected and serviced promptly. Additionally, if you live in an area with extreme weather conditions or if your system is heavily used, more frequent servicing, such as every

12 or 6 months

might be beneficial.

Cost of general service is roughly $299

When your air conditioner experiences issues, deciding whether to repair or replace it can be tough. Here’s a simple guide:

Age: If it’s 10-15 years old or older, consider replacement for better long-term value.

Cost: Compare repair costs to the price of a new unit. Extensive repairs may make a new system more cost-effective.

Efficiency: Older units are less energy-efficient. Upgrading to a new model can save on energy bills.

Breakdowns: Frequent breakdowns indicate a more reliable system is needed.

Comfort: If your current system struggles to cool evenly or maintain a comfortable temperature, replacement can improve performance.

Environmental Impact: Upgrading ensures compliance with eco-friendly refrigerants and reduces your carbon footprint.

Professional air conditioning service involves cleaning components like condenser coils, filters, and drainage lines. Technicians inspect for wear, leaks, and electrical issues, while lubricating moving parts and making necessary adjustments. They also test the system for effective cooling, airflow, and thermostat calibration.

Hiring a professional is crucial due to their expertise in handling air conditioning systems, ensuring safety and preserving warranty validity. Professional service extends the system’s lifespan, optimizes energy efficiency, and reduces long-term costs.

By relying on professionals for air conditioning service, you can be confident that your system will receive comprehensive maintenance, leading to optimal performance and peace of mind.

As energy efficiency and modern conveniences become more critical, many homeowners are considering upgrading their old gas-ducted heating systems to modern ducted air conditioning systems. This transition can offer both heating and cooling from a single system, improving comfort year-round. However, the process of converting from gas-ducted heating to ducted air conditioning is not straightforward. Here, we’ll explore whether it can be done, and the best practices for making the switch.

The Feasibility of Conversion

Yes, it is possible to change from gas-ducted heating to a ducted air conditioning system, but there are several factors to consider:

1. Ductwork Suitability: The ductwork used for gas heating might not be ideal for a ducted air conditioning system. This is due to differences in duct thickness and air flow rates required by each system.
2. Age and Condition of Ductwork: Most gas heating systems were installed over a decade ago, meaning the existing ductwork could be old, loose, or damaged.

Best Practices for Conversion

Replacing Ductwork

The most reliable method to ensure optimal performance of your new ducted air conditioner is to replace the entire ductwork system. Here’s why:

  • Compatibility: Air conditioning ductwork is designed to handle different air pressures and volumes compared to gas heating systems.
  • Efficiency: New ductwork will be properly sealed and insulated, ensuring the system operates at peak efficiency.
  • Longevity: Upgrading the ductwork can extend the lifespan of your new air conditioning system by reducing strain and preventing potential issues from old, damaged ducts.

Challenges with Two-Story Homes

In two-story homes, particularly where the downstairs ductwork is located between the two levels, replacing the entire duct system can be very complex. Here’s why:

  • Access Issues: Ducts located in the ceiling between floors are difficult to reach without significant construction work.
  • Ceiling Damage: Retrofitting new ducts often requires cutting into ceiling plaster, which can be invasive and costly.

Using Existing Ductwork

While it is possible to use the existing ductwork from a gas-ducted heating system for a new ducted air conditioner, this approach has its drawbacks:

  • Performance Issues: The old ductwork may not be optimized for the new system, leading to potential inefficiencies and reduced performance.
  • Potential Leaks: Older ducts may have leaks or poor insulation, which can compromise the effectiveness of the air conditioning.
  • Limited Lifespan: Reusing old ducts can lead to more frequent maintenance issues and a shorter overall lifespan for the new system.


  1. Professional Assessment: Before making any decisions, have a professional HVAC technician assess your current ductwork and the feasibility of using it for a new ducted air conditioning system.
  2. Cost-Benefit Analysis: Consider the long-term benefits of replacing the ductwork versus the short-term savings of using the existing system. New ductwork, while an initial investment, can save money and hassle down the line.
  3. Plan for Disruption: If you decide to replace the ductwork, especially in a two-story home, be prepared for some level of disruption. Ensure you have a plan in place for any construction work needed to access and replace the ducts.


Converting from gas-ducted heating to a ducted air conditioning system can be a worthwhile upgrade, providing enhanced comfort and efficiency. While it is possible to use existing ductwork, the best results typically come from replacing it with ductwork designed for the new system. This ensures compatibility, efficiency, and longevity, particularly in complex setups like two-story homes. Always consult with a professional to determine the best approach for your specific situation.

Improving indoor air quality (IAQ) using your air conditioner involves several strategies. Modern air conditioning systems can play a crucial role in maintaining a clean and healthy indoor environment. Here are ways to optimize your air conditioner to enhance IAQ:

1. Regular Maintenance

Professional Servicing: Schedule regular professional maintenance for your air conditioning system. Technicians can clean internal components, check for mold, and ensure everything is functioning correctly.
Filter Replacement: Replace or clean air filters every 1-3 months, depending on usage and manufacturer recommendations. High-efficiency particulate air (HEPA) filters are particularly effective at trapping dust, pollen, and other allergens.

2. Use High-Quality Filters

HEPA Filters: These filters can capture very fine particles, including dust, pollen, and pet dander, significantly improving IAQ.
Activated Carbon Filters: These can remove odors, volatile organic compounds (VOCs), and some gases from the air.

3. Incorporate Air Purification Technology

• UV-C Light: Some air conditioning systems can be equipped with UV-C light purifiers, which help kill bacteria, viruses, and mold spores that pass through the system.
Ionizers: These devices can help to neutralize airborne particles, making them easier to filter out.

4. Control Humidity Levels

Dehumidification: Many air conditioners have built-in dehumidification features. Keeping indoor humidity between 30-50% helps prevent mold growth and dust mites, which thrive in high humidity.
Humidifiers: In dry climates, use a humidifier to maintain optimal humidity levels, as overly dry air can also cause health issues.

5. Ensure Proper Ventilation

Fresh Air Intake: Some modern air conditioning systems have options for fresh air intake, which can help circulate outdoor air into your home, diluting indoor pollutants.
Ventilation Systems: Consider integrating an energy recovery ventilator (ERV) or a heat recovery ventilator (HRV) with your air conditioning system to improve ventilation without losing energy efficiency.

6. Keep Ducts Clean

Duct Cleaning: Periodically have your air ducts professionally cleaned to remove dust, mold, and other contaminants that can accumulate and be redistributed through your home.
Seal Leaks: Ensure that ductwork is properly sealed to prevent contaminants from entering and spreading through the system.

7. Optimize Airflow

Unblock Vents: Make sure that vents are not blocked by furniture or other objects, allowing for proper air circulation throughout the home.
Balanced Airflow: Ensure that the air conditioner is balanced correctly, with no room getting disproportionately more air than others.

8. Use Smart Controls

Programmable Thermostats: Use programmable or smart thermostats to maintain optimal temperature and humidity levels automatically.
Air Quality Monitors: Some smart home systems include air quality monitoring that can adjust your air conditioning settings to maintain the best possible IAQ.


Using your air conditioner to improve indoor air quality involves regular maintenance, upgrading filters, integrating air purification technologies, controlling humidity, ensuring proper ventilation, keeping ducts clean, optimizing airflow, and using smart controls. By following these steps, you can significantly enhance the air quality in your home, creating a healthier and more comfortable living environment.

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