Smart Air Conditioning

Many modern air conditioning systems can be controlled from your phone. You can switch the system on before you get home, change the temperature from bed and set schedules for the week. This guide explains what smart control can do and what to check.

How It Works

The indoor unit connects to your home Wi-Fi, either through a built-in module or a small adapter fitted to the unit. You then control it through the manufacturer's app on your phone or tablet, at home or away.

What You Can Do From the App

• Switch the system on or off from anywhere.

• Change the mode, temperature and fan speed.

• Set weekly schedules, so rooms are comfortable when you need them.

• Control several rooms from one screen, for example with a multi-split system.

• On some models, see energy use, get alerts or have the system react when you leave or arrive home.

Voice Control

Many systems also work with smart speakers and voice assistants, so you can change the temperature by voice. Check compatibility before you choose a system.

Smart Control for an Existing System

• Manufacturer adapters. Many recent systems accept a Wi-Fi adapter from the same manufacturer.

• Universal smart controllers. Small devices that copy the infrared signals of your remote can add app control to older units. They are less capable than a proper adapter, because they cannot read what the unit is actually doing.

If you are not sure whether your system can take an adapter, ask us at your next service.

Keeping It Secure

Since 29 April 2024, smart products sold in the UK must not have universal or easily guessed default passwords, and manufacturers must say how long they will provide security updates. You still need to play your part:

• Use a strong, unique password for the app account.

• Keep the app and the unit's software up to date.

• Make sure your home Wi-Fi is protected with a strong password.

Does Smart Control Save Money?

It can. Schedules stop the system running in empty rooms, and you can switch it off from your phone if you forget. Our guide to remote symbols, modes and the best temperature has more ways to cut running costs.

Frequently Asked Questions

Does smart air conditioning need Wi-Fi to work?

No. The system still works with its normal remote or wall controller if the Wi-Fi or internet is down. You only lose app control.

Can I control air conditioning in several rooms?

Yes. Several indoor units can usually be grouped in one app, so you can control the whole house from one screen.

Can I have app control on a new system?

Yes. Many current systems have Wi-Fi built in or offer an adapter. Tell us at the survey that you want app control, and we will recommend a suitable system. See wall-mounted air conditioning.

Call 01772 288651 or use the form below to book a free survey. We will measure the room, recommend the right system and give you a clear written quote.

Last updated: November 2026.