Air Conditioner Placement

Cold Control
Aug 5
5 min read

How to Choose the Best Spot for Maximum Efficiency

When installing a new air conditioner, location matters more than most people think. Poor air conditioner placement can reduce cooling efficiency, increase energy costs, and shorten the unit’s lifespan. Whether you’re adding a split system to a new build or replacing an old AC, knowing the best place to install units is essential for performance and comfort.

What Influences AC Location

Choosing the right air conditioner placement involves more than just finding a free wall or outdoor space. A few key factors influence the ideal AC installation location:

1. Room layout and size

The shape and size of the room affect how evenly cool air will circulate. Large or irregularly shaped rooms may need strategic positioning to avoid hot and cold spots.

2. Sun exposure

Direct sunlight can make an AC work harder. South- or west-facing walls that get afternoon sun may not be the most energy-efficient spots for a split AC indoor unit placement.

3. Obstructions and airflow

Furniture, curtains, and architectural features can block airflow. For outdoor units, nearby plants, fences, or walls can restrict ventilation and trap heat.

4. Noise considerations

Indoor units create a low hum, and outdoor condensers can be loud during operation. Placement should consider living areas, bedrooms, and neighbouring properties.

5. Accessibility for maintenance

Technicians need space to access the unit for servicing. Cramming an outdoor condenser into a tight corner can make cleaning and repairs difficult.

How Location Affects Efficiency

AC units work by pulling in warm air, cooling it, and circulating it through the room. If the unit is placed in the wrong spot, this process becomes less efficient, leading to:

Higher energy bills – The system runs longer and uses more electricity to achieve the same cooling effect.
Uneven cooling – Some areas may remain hot while others feel too cold.
Shorter system life – Overworking the compressor and fans due to poor airflow can reduce the unit’s lifespan.

For example, placing an indoor unit near a heat source or in direct sun can cause inaccurate thermostat readings. The AC will run longer than necessary, wasting energy. Similarly, outdoor AC unit location in a poorly ventilated spot will trap heat, forcing the system to work harder.

The Impact of AC Unit Placement

Placement affects not just energy efficiency but also comfort and durability.

Comfort – Correct positioning helps distribute cool air evenly, preventing drafts or pockets of warm air.
Noise – Poor placement can make an AC sound louder indoors or outdoors.
Aesthetics – An indoor unit that dominates a room or an outdoor condenser that blocks a walkway isn’t ideal.
Weather resistance – Outdoor placement should protect the unit from excessive wind, rain, and debris.

Making placement decisions without professional advice often leads to compromises that you’ll notice daily. An air conditioning specialist can recommend split system air conditioner placement based on airflow patterns, sun exposure, and building layout.

Best Location to Install Your Indoor Unit

For a split system or ductless AC, the indoor unit’s position directly affects cooling performance. Here’s how to get split AC indoor unit placement right:

1. High on the wall

Cool air naturally sinks, so placing the unit higher allows it to cool the room more effectively.

2. Away from heat sources

Avoid walls near ovens, stoves, or direct sunlight. Heat sources cause inaccurate thermostat readings, making the AC run unnecessarily.

4. Clear airflow path

Ensure at least 1–2 meters of unobstructed space in front of the unit. Avoid installing it behind beams, curtains, or furniture.

5. Accessible for cleaning

You’ll need to clean filters regularly, so choose a spot that’s easy to reach.

Best Location to Install Your Outdoor Unit

The outdoor condenser is responsible for expelling heat, so its location is just as important as the indoor unit. Here are outdoor AC unit location tips to improve performance and extend lifespan:

1. Shaded but ventilated

Place the unit in a shaded area to prevent overheating but avoid spots with poor airflow. A shaded, open space is ideal.

2. Away from bedrooms

Outdoor units can be noisy, especially during high-demand periods. Position them away from sleeping areas to avoid disturbances.

3. Stable, elevated base

The unit should sit on a flat, stable platform (concrete or a metal stand) to avoid vibration and keep it safe from flooding.

4. Clear of obstructions

Leave at least 60 cm of clearance on all sides for proper airflow and easy maintenance. Avoid placing it too close to fences, walls, or dense plants.

5. Consider local climate

In areas with heavy snowfall, ensure the unit is raised high enough to stay clear of snow. In hot climates, prioritize shade and ventilation.

Cold Control – Your Air Conditioning Experts

Good air conditioner placement is a mix of efficiency, comfort, and practicality. The right location will keep your home cool, lower your energy bills, and help your AC last longer. Poor placement can lead to inefficiency, noise, and expensive repairs.

If you’re unsure about where to position your units, call us for a free site survey. Our design team can assess your space, identify airflow efficiency, and ensure your system is installed in the best installation location for maximum performance.

Frequently Asked Questions About Air Conditioner Placement

Q: Where is the best place to install a split AC indoor unit?

A: Ideally, place it high on a wall, away from heat sources and direct sunlight. This ensures even cooling and accurate temperature readings.

Q: Can I place my outdoor AC unit in direct sunlight?

A: While it will still work, direct sunlight can make the unit run less efficiently. If possible, choose a shaded but open area for better performance.

Q: How far should the outdoor unit be from the indoor unit?

A: Most split systems allow up to 15 meters between units, but shorter distances are better for efficiency. Always follow the manufacturer’s guidelines.

Q: Can an outdoor AC unit be placed on the roof?

A: Yes, but it should be installed on a stable platform with good airflow and easy access for maintenance. Roof installations may also be more exposed to weather.

Q: Does indoor AC placement affect electricity bills?

A: Yes. Poor placement can cause the system to work harder, increasing energy use. Correct positioning improves efficiency and lowers running costs.