Winter-proof
your home.

A boiler breakdown, a burst pipe, or a badly insulated loft are all much worse to deal with in January than in October. Here's a practical checklist to get your home ready before the cold arrives — most of it takes an afternoon.

Heating system

Get your boiler serviced

An annual boiler service costs £60–£100 and catches problems before they become mid-winter emergencies. It also keeps your manufacturer's warranty valid — most warranties require an annual service. If your boiler is over 12 years old, ask the engineer about its efficiency rating. Modern condensing boilers run at 90%+ efficiency; older models can be as low as 70%, meaning 30p of every £1 of gas is wasted.

Bleed all radiators

Work through every radiator in the house with a bleed key. Start downstairs and work up. If a radiator is cold at the top, there's trapped air. After bleeding, check your boiler pressure — it should be between 1 and 1.5 bar. If it drops after bleeding, top it up via the filling loop (your boiler manual will show you how).

Test your heating before you need it

Turn on your heating for an hour in October. Check that every radiator warms up, the thermostat responds, the programmer works, and the boiler fires without error codes. Finding a problem now gives you weeks to fix it before the first cold snap.

Check your thermostat batteries

Wireless thermostats and room sensors run on batteries. If they die mid-winter, your heating won't respond to temperature changes — it'll either run constantly or not at all. Replace batteries now.

Pipes and water

Lag exposed pipes

Pipes in unheated spaces — loft, garage, under the kitchen floor, outside walls — are at risk of freezing. Pipe insulation foam costs £1–£3 per metre from any DIY shop and takes minutes to fit. Focus on the cold water feed from your tank, any pipes in the loft, and outdoor taps. A burst pipe costs thousands to repair and causes devastating water damage.

Know where your stopcock is

If a pipe does burst, you need to turn off the water supply immediately. Your internal stopcock is usually under the kitchen sink, but not always. Find it now, check it turns (they seize up if unused), and make sure everyone in the household knows where it is.

Insulate your cold water tank

If you have a cold water tank in the loft, it should have an insulating jacket. Without one, it can freeze in a severe cold spell — and a frozen tank in the loft is one of the most expensive household emergencies. A tank jacket costs under £20.

Insulation and draughts

Check your loft insulation

Current UK recommendations are 270mm (about 10 inches) of mineral wool insulation in the loft. If yours is less than that — or patchy, compressed, or missing in places — topping it up is one of the highest-return improvements you can make. A DIY loft top-up costs £200–£400 in materials; professional installation runs £400–£700 for a standard loft. Use our insulation calculator to estimate your saving.

If you're on a low income, you may qualify for free loft insulation through ECO4 or the Warm Homes Local Grant.

Seal draughts

Walk around the house on a windy day and feel for cold air coming in around doors, windows, letterboxes, cat flaps, the loft hatch, and where pipes and cables pass through external walls. Self-adhesive foam strip, silicone sealant, and a door draught excluder will fix most problems for under £30. See our keeping warm for less guide for a full breakdown.

Check window seals

Rubber seals around double-glazed windows degrade over time. If you can feel cold air around a closed window, the seal has failed. Replacement rubber gasket is cheap and usually a DIY job — measure the profile of your existing seal and order matching strip. If the sealed unit itself has failed (condensation between the panes), the glass unit needs replacing — but not usually the whole frame.

Outside the house

Clear gutters and drains

Blocked gutters overflow, and in freezing weather that water turns to ice on paths and can seep into walls. Clear leaves and debris from gutters, downpipes, and ground-level drains before the autumn leaf fall peaks. A gutter scoop costs £5; a professional gutter clean runs £50–£100 for a semi-detached house.

Check your roof

Look for slipped or cracked tiles from ground level (binoculars help). A missing tile lets rain and wind into your loft — and in winter, that means damp insulation, mould, and heat loss. Roof repairs are cheaper and easier to arrange before winter demand kicks in.

Outdoor taps

If you have an outdoor tap, turn off the isolating valve inside the house (usually under the kitchen sink or in the airing cupboard) and open the outside tap to drain it. Leaving water in an outdoor tap through winter is asking for a burst pipe.

Energy bills and tariffs

Take a meter reading

If you're not on a smart meter, take a reading now. This marks the start of your high-usage winter period and ensures you're not estimated during the most expensive months. If you are on a smart meter, check it's transmitting correctly — about 10% of smart meters lose connection after a supplier switch.

Review your tariff

October is often when new energy price cap rates take effect. Check whether you're on a fixed deal or the variable cap, and whether switching saves money. If you have solar, a battery, or an EV, a time-of-use tariff could save you significantly — use our tariff comparison calculator.

Check your direct debit

Energy suppliers spread your annual cost across 12 months, but winter usage is much higher than summer. If your direct debit hasn't been adjusted, you could be building up debt through winter that becomes a shock in spring. Check your account balance and adjust if needed — better to pay slightly more now than face a large catch-up bill.

Emergency prep

Power cuts: keep a torch with fresh batteries accessible (not buried in a drawer). If you have a mobile phone, keep a power bank charged. Know your electricity distributor's emergency number — it's on your bill or at powercut105.com.

Boiler breakdown: if you don't have boiler cover, look into it before winter. A one-off emergency call-out in December can cost £200–£400 with long waits. If you do have cover, check what's actually included — some policies exclude parts over a certain age.

Frozen pipes: if a pipe freezes, never use a blowtorch or boiling water. Thaw slowly with warm (not hot) cloths wrapped around the pipe, working from the tap end backwards. Turn off the water at the stopcock first in case the pipe has already split.

Published October 2026. A practical checklist — not every item will apply to every home. Prioritise based on your property type and heating system.