Air Conditioning for Elderly Relatives in a Heatwave

By the AirCon Doctor team · Updated 30 October 2026

Many of the calls we take before a summer heatwave come from sons and daughters, not the person who lives in the house. They’ve seen the forecast, they know Mum’s bedroom gets stuffy, and they want to know what can be done in time.

This guide brings together the official advice on hot weather and the practical side of cooling an older person’s home. We’re air conditioning engineers, not health professionals, so for anything about a person’s health follow the NHS heatwave advice and speak to their GP.

What the official advice says

The NHS says older people, especially those aged 65 and over, are more vulnerable in hot weather, along with babies and young children, people with serious long-term conditions and people who live alone. It suggests closing windows, curtains and blinds during the day and opening them at night when the outside temperature has gone down, and checking on anyone at higher risk.

The UK Health Security Agency publishes Beat the heat guidance and a keep cool at home checklist. The checklist notes that top-floor flats are more likely to overheat because heat rises, and that some highly insulated or energy-efficient homes may trap heat inside. It also says to use electric fans if the air temperature is below 35°C, and not to aim the fan directly at your body.

Heat-health alerts: know when to act

UKHSA runs a Weather-Health Alerting system with the Met Office. The core season for heat-health alerts runs from 1 June to 30 September. Anyone can register to get alerts by email, which is a useful early warning for families and carers who need to check in on someone.

Where air conditioning fits

Shading, ventilation and fans are the first steps, and they cost little. Air conditioning helps when those aren’t enough: a bedroom that stays hot at night, a flat under the roof, or a conservatory-style living room that bakes in the afternoon.

For most older relatives one cooled room is the sensible start. Usually that’s the bedroom, because a cool place to sleep makes a real difference to comfort, or the main living room where they spend the day. A wall-mounted split system cools one room quietly and efficiently. Unlike a portable unit, there’s no hose out of the window and nothing to trip over.

Most modern split systems are air-to-air heat pumps, so the same unit can also heat the room in winter. The Energy Saving Trust notes that air-to-air heat pumps are sometimes referred to as air conditioning.

Controls an older person can actually use

The best system is the one that gets switched on. When we install for an older customer we look at:

A simple controller. Most brands offer a basic remote or a wall controller with large buttons. We can set the mode and temperature so it only needs an on/off press.
Timers. The system can switch itself on before the hottest part of the day or before bedtime.
App control for family. With a Wi-Fi adaptor, a relative can check the room temperature and adjust the system from their own phone. This is often the feature families value most. See our guide to smart air conditioning apps.
Gentle airflow. Louvres set to send air along the ceiling, not onto the bed or chair.

Want it done properly? AirCon Doctor installs, repairs and services air conditioning and heat pumps across London and the South East, from our base in East Grinstead. We’re an F-Gas certified company and NICEIC approved. Get a fixed-price quote.

Check the room, not just the unit

A controller shows what the system is set to. It doesn’t always show what the person is feeling in their chair or bed. A simple room thermometer in the bedroom and living room, read by the person or by whoever visits, gives a clearer picture. The NHS advice to check room temperatures where vulnerable people live and sleep is easy to follow with one.

Timing: don’t wait for the heatwave

Air conditioning demand peaks when the weather turns hot, which is exactly when everyone wants an engineer. The calmer route is to arrange a survey in spring. That gives time to choose the right room, agree where the outdoor unit goes and, in a rented or leasehold home, get any consent needed. Our guide to leasehold consent covers flats.

A typical single-room installation takes a day. Our single-room prices are £1,200–£2,200 + VAT, including supply, installation, commissioning and F-Gas paperwork. We reply to enquiries the same working day.

Keeping it reliable

A system that fails in the first hot week of summer is no help. An annual service checks refrigerant performance, cleans the coil and drain and makes sure the controls work. Filters can be rinsed by a family member every few weeks in summer. If the system does stop, our 24/7 emergency line is 07833 053749.

Care homes and sheltered housing

If your relative lives in a care home or sheltered scheme, cooling is a matter for the provider. Our care homes guide explains what managers usually consider.

Quick answers

Is air conditioning recommended for older people in a heatwave?

The NHS and UKHSA advice focuses on keeping homes cool, checking on people at higher risk and using fans below 35°C. Air conditioning is one way to keep a room cool when shading and ventilation aren’t enough. For health questions, ask the person’s GP.

Which room should we cool first?

Usually the bedroom, so there’s a cool place to sleep, or the living room where they spend the day. One well-placed wall-mounted unit is often enough to start.

Can I control my parent’s air conditioning from my phone?

With a manufacturer’s Wi-Fi adaptor, yes. You can check the temperature and switch it on or off remotely.

How quickly can a system be installed?

A single room usually takes a day once surveyed and quoted. Book in spring if you can, because demand rises with the temperature.

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More advice

This guide is general information, checked against the sources linked on 30 October 2026. It isn’t legal, tax or financial advice. Rules, grants and product ranges change, so check the current position before you rely on it.