If you’re considering buying a new split system but aren’t sure what size to choose, there are a few key factors to consider. Room size, insulation quality, and local climate all play a role in determining the right system. As a general guide, rooms up to 20 m² typically require a 2.5 kW system, while spaces between 40-60 m² usually need a 5-7 kW unit. Keep in mind that these recommendations can vary based on your home’s energy efficiency and location. Selecting the correct size is crucial for comfort and energy savings—an oversised or undersised unit can lead to humidity problems, higher energy bills, and a shortened system lifespan. For personalised advice, it’s best to consult with a local HVAC professional. Langler Air has created this guide to help you optimise your split air conditioning system and make an informed choice.
Table of Contents
Factors that Influence the Size of Air Conditioner You Need
Several factors influence the right size of an air conditioning unit, including room size, insulation, location, and orientation. Each of these elements affects the cooling capacity you’ll need. Let’s take a closer look at how these factors impact your decision.
Room Size
The size of your room plays an essential role in determining the appropriate split system air conditioner for your needs. To find the right aircon size, use an air conditioning size calculator or consult a professional. They’ll consider your room’s dimensions to determine what size split system you need. Accurate sizing guarantees ideal comfort and efficiency, so don’t guess – calculate!
Insulation
Insulation plays an essential role in determining the size of your split system air conditioner. If you’re wondering, “What size air con do I need?” or “What capacity AC do I need?”, consider your home’s insulation. Well-insulated homes require smaller units than poorly insulated ones. For precise sizing, consult professionals who can assess your insulation and recommend the ideal size air conditioning unit you need.
Location
Another factor that influences the size of your split system air conditioner is location. If you’re in a hot, humid climate, you’ll need a more powerful system to maintain comfort. Your home’s orientation also matters, if it receives direct sunlight for much of the day, you’ll require a larger unit. Consider these factors when determining the right size for your needs.
Orientation
Your home’s orientation plays a critical role in determining the size of your split system air conditioner. North-facing homes typically require less cooling capacity than those facing south or west, which receive more direct sunlight. Knowing your home’s orientation helps you select a system that efficiently maintains a comfortable temperature, ensuring you’re not paying for more cooling power than you need.
How to Calculate What Size Air Conditioner You Need?
To determine the right size air conditioner for your home, you’ll need to calculate the cooling capacity required in British Thermal Units (BTUs) per hour. Factors like room size, insulation, windows, and climate affect the calculation. A professional can help you accurately assess your needs. Choosing the correct size guarantees maximum comfort, energy efficiency, and cost savings for your living space.
Air Conditioner Room Size Chart: A Rough Guide
While a professional assessment is ideal, you can also use a rough guide based on room size to estimate the cooling capacity needed. For spaces up to 20 m2, a 2.5kW system should suffice. Rooms between 20-40 m2 typically require a 3.5-5kW unit. For 40-60 m2, opt for a 5-7kW system. Larger spaces over 60 m2 will need a 7-8kW air conditioner.
Why Where You Live Matters
Where you live considerably impacts the size of the split system you need. Factors like climate, humidity levels, and average temperatures influence the cooling capacity required. If you reside in a hot, humid region, you’ll likely need a more powerful system than someone in a milder area. Consult with a local HVAC professional to determine the ideal size for your location.
Why Roof Insulation Matters
Proper roof insulation plays an essential role in determining the size of your split system. It helps regulate your home’s temperature, reducing the load on your air conditioner. With adequate insulation, you can opt for a smaller, more efficient split system that saves energy and money. Conversely, poor insulation may require a larger unit to compensate for the heat gain or loss.
Why You Shouldn’t Go Too Big or Too Small
Choosing an air conditioner that’s too large will cool your home quickly but shut off before it can remove humidity, leaving you feeling clammy. If it’s too small, it won’t be able to cool your home adequately on the hottest days, and it will run constantly, driving up your energy bills. It’s important to select a unit that’s just the right size for your space and cooling needs.
If It’s Too Big?
Selecting an oversized split system might seem like a good idea, but it can lead to several issues. It’ll cool your home too quickly, resulting in short cycling and inadequate dehumidification. This can make your home feel clammy and uncomfortable. Oversizing also increases wear and tear on the system, leading to higher energy bills and a shorter lifespan for your unit.
If It’s Too Small?
On the other hand, an undersized split system will struggle to cool your home adequately, especially during the hottest days of summer. It’ll run continuously, trying to reach the desired temperature, leading to increased wear and tear on the unit. This constant operation will also result in higher energy bills without providing the cooling comfort you need for your living space.
The Best Air Conditioner Brands
Several top-tier air conditioner brands deliver reliable performance, energy efficiency, and advanced features. Brands like Mitsubishi Electric are known for their high-quality split systems. When choosing a brand, consider factors such as energy ratings, noise levels, and after-sales support. Although it may cost more upfront but it will provide you long-term savings through reduced energy bills and longer lifespans.
Frequently Asked Questions
What Is a Split System Air Conditioner?
A split system air conditioner has two main components: an outdoor compressor unit and an indoor air handling unit. It’s called a “split system” because these two parts are separated, or split.
How Much Does a Split System Air Conditioner Cost?
You can expect to pay around $3,000-$5,000 for a split system air conditioner, including installation. Factors like unit size, energy efficiency, and brand will affect the final cost. It’s a significant investment in your comfort.
How Long Does a Split System Air Conditioner Last?
You can expect a split system air conditioner to last between 10-15 years with proper maintenance. Regular cleaning, filter changes, and professional servicing will help extend its lifespan and keep it running efficiently.
Can I Install a Split System Air Conditioner Myself?
You can install a split system AC yourself, but it’s not recommended. You’ll need specialised tools and knowledge of electrical wiring, refrigerant handling, and local codes. It’s best to hire a professional HVAC technician.
How Often Should I Service My Split System Air Conditioner?
You should service your split system air conditioner annually to maintain efficiency and prevent breakdowns. A professional technician will clean, inspect, and tune up the unit, ensuring it’s ready for the cooling season ahead.
Conclusion
There you have it! Now, you now know the factors that determine what size split system you need. To get it right, consider your room sizes, location, and insulation. Don’t forget to stick with reputable brands like Mitsubishi Electric for the best performance and efficiency. Langler Air is the official Mitsubishi Diamond Dealer in Perth. With this knowledge, you’re well-equipped to choose the perfect air conditioner for your home. Keep in mind, if you’re unsure, it’s always best to consult with a professional to guarantee you make the right decision. Contact Langler Air today!
