Cold homes: the conversation worth having before winter
Cold housing is a health issue rather than a comfort one, and the people most likely to be economising are the ones most at risk.
There is a conversation many families have every autumn and few have well: an older relative is not heating their home properly, is worried about the cost, and is at genuine risk as a result.
Cold homes are a serious health issue rather than a comfort one. Excess winter deaths are strongly associated with cold housing, and the risks — cardiovascular and respiratory events, falls, worsening of existing conditions — fall hardest on exactly the people most likely to be economising. Getting this right matters more than any other automation you might install for a parent.
The health facts, briefly
Guidance from health bodies, including the World Health Organization, points to a minimum indoor temperature of around 18 °C for healthy adults, with higher recommended for older people, very young children and anyone with a chronic condition — commonly around 20 °C in living areas during the day.
Why it matters physiologically: cold raises blood pressure and increases the load on the heart, thickens blood slightly, and suppresses the immune response in the airways. The health effects of a cold home appear within hours to days of exposure rather than over a season, and the risk does not require extreme cold — sustained indoor temperatures in the low teens are enough.
There is also a mobility link that is easy to overlook. Cold stiffens joints and reduces dexterity and reaction time, which increases fall risk — and a fall is the event that most often ends independent living.
Why older people under-heat
Understanding the reasons determines which intervention helps, and they are rarely just about money.
Cost anxiety, often disproportionate to actual consumption, and frequently rooted in habits formed decades ago when heating genuinely was a luxury.
Reduced temperature perception. The ability to sense cold declines with age, so an older person may not feel cold in a room that is objectively too cold for them. This is the crucial point: the usual check — asking “are you warm enough?” — is unreliable.
Controls they cannot use. A programmer with a small display and cryptic symbols, installed by someone else, set once and never understood. A great many older heating systems are running on a schedule nobody has changed in years.
Only heating one room, which leaves bedrooms and hallways cold — and the bedroom overnight and the hallway on the way to the bathroom are where the risk sits.
A system that is not working properly and nobody has mentioned. A failed radiator, an airlocked circuit, a boiler that has been locking out for weeks.
Measure, because asking does not work
This is the first practical step and the most valuable.
Put a temperature and humidity sensor in every occupied room: living room, bedroom, hall, bathroom. Cheap, unobtrusive, and they turn a vague worry into a number.
Look at overnight bedroom temperature, which is frequently the lowest reading and the one that matters for cardiovascular risk.
Look at the hallway and bathroom route, which is where a cold night-time trip happens.
Alert on sustained low readings — say below 17 °C in a living area during the day, or below 16 in a bedroom overnight — to a family member as well as to the resident.
Watch humidity too, because a cold home is usually a damp home, and damp housing brings its own respiratory risk.
Do this with consent and with the reason explained. Framed as “so we know the boiler is working properly” it is usually welcomed; framed as checking up, it is not.
Having the conversation
A few approaches that work better than others, from experience rather than theory.
Lead with the health information, not the money. Many people who will not spend money on their own comfort will act on a clear explanation that cold raises blood pressure and increases fall risk. It reframes heating as medication rather than luxury.
Use the numbers. “Your bedroom was 13 degrees at 6am” is a fact that invites problem-solving. “You need to put the heating on” invites resistance.
Find out what the actual cost is. Anxiety is frequently far larger than the real figure, and knowing what an extra two degrees costs per week — a number you can calculate from meter readings — often resolves it directly.
Check they are receiving what they are entitled to. Most European countries have some combination of energy allowances, winter payments, social tariffs, discretionary support or efficiency grants for older and low-income households, and take-up is consistently low. This is frequently the single most useful intervention, and it is a phone call rather than a purchase.
Do not remove their control. A system a person cannot override is a system they will resent and defeat. The goal is a sensible baseline they can always adjust, not a house managed remotely over their head.
What actually helps, in order
- Check the heating system works. Have it serviced, bleed and balance the radiators, check every room actually gets warm. A remarkable share of “they will not heat the house” turns out to be “the house does not heat”.
- Check benefits and grants. Free, and often worth more than everything else combined.
- Set a sensible automatic schedule with a proper baseline — living areas around 20 °C in the day, and never below about 18 in a bedroom overnight — so warmth does not depend on someone deciding to switch it on.
- Make the controls usable, or replace them. Large clear display, simple boost button, no menus. This matters more than any smart feature.
- Draughtproof and insulate, which reduces cost and makes lower settings comfortable. Often grant-funded.
- Heat the bedroom and the bathroom route, not just the living room.
- Add low-temperature alerts reaching family, so a broken boiler in January is known within hours.
- Add night lighting on the bathroom route, low and warm, which addresses the fall risk that cold worsens.
If you are concerned about an older person’s health, that is a conversation with their doctor, not a technology decision. Sudden confusion, drowsiness, slurred speech, shivering that has stopped, or very cold skin can indicate hypothermia, which is a medical emergency and can develop indoors at temperatures well above freezing. Older people may not appear obviously cold. Many countries also operate cold weather alert schemes and free home safety or efficiency visits for people at risk — worth finding out what exists locally before winter rather than during it.
The automations we would set up for a parent's home
A firm heating baseline that runs automatically and does not require a decision each day.
Low temperature alerts to family, per room, at thresholds set on health rather than comfort.
Heating failure detection — heat demanded but temperature not rising — which catches a boiler lockout without anyone mentioning it.
Bathroom pre-heat before the usual waking time, since a cold bathroom is where people decide not to wash.
Night route lighting, warm and dim, on motion.
Humidity monitoring, with a nudge if a room is heading towards damp.
An energy figure they can see, in money, so the anxiety has something factual to work with.
Nothing that removes the manual controls.
The whole set costs less than a single winter's avoidable heating waste, and the alerting is what turns a worry you cannot resolve from a distance into a number you can act on.