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Heating

Advice on boilers, radiators, central heating systems and keeping your home warm and energy efficient.

Heating

Simple Steps to Reduce Condensation: Part 1

It’s that time of year where temperatures drop and the heating goes on. While it may be warm and snuggly inside, it’s pretty much guaranteed that most of us are now battling with condensation. Condensation may be irritating – and the resulting mould even more so, but don’t despair. There are some simple things you can do to prevent condensation without causing too much inconvenience.

It’s that time of year where temperatures drop and the heating goes on. While it may be warm and snuggly inside, it’s pretty much guaranteed that most of us are now battling with condensation. Condensation may be irritating – and the resulting mould even more so, but don’t despair. There are some simple things you can do to prevent condensation without causing too much inconvenience.

Basically, condensation happens when the air inside your house is so much warmer than the air outside that the vapour in the air turns into water on cold surfaces. This means that windows are the first place to be affected by condensation, followed by window frames and north facing walls, which don’t get a chance to warm up during the winter months.

One way to avoid condensation is to make sure that the temperature difference between the inside and the outside isn’t huge, but that isn’t incredibly practical. Another way is to reduce as much as possible fluctuations in temperature and the volume of water vapour in the air. This is much easier!

Close doors

When you are cooking or having a long shower (or even a short one, for that matter), close the door to the kitchen or bathroom to prevent the steam from dispersing to the rest of the house.

Dry outside

Drying washing in the winter can be a challenge, but drying it inside can really contribute to condensation as you are bringing extra water into your home. If it’s not possible to dry outside, try keeping your drying to a single room, such as the utility room or bathroom, with the door closed (and maybe the window cracked open slightly).

Put a lid on it

Using pan lids is something that people tend to do religiously, or tend not to do at all. When you cook, a lot of steam is released. Putting a lid on the pan stops this steam, it also stops heat from leaving your pan. So using a lid has double benefits: your food will cook a little more quickly and you will reduce condensation, too.

Wipe down

The problem is, cold attracts the moisture, so as the moisture builds up and cools on a cold surface, more will follow. If you have areas that are prone to condensation, regular wipe-downs can prevent mould from forming. A quick wipe with an e-cloth after cooking, showering, or just when you notice moisture in wall seams and corners, can make a real difference.

Move furniture

The best way to reduce condensation is to allow air to flow freely through a room. By moving furniture slightly away from external walls, you can really help to reduce the build up of moisture and mould.

If our top five tips don’t do the trick, get in touch with a local damp specialist to make sure that the problem is condensation, and not something more serious. There are more tips to come! Follow us on Facebook or Twitter for next week’s instalment.

Looking for more heating advice?

Find clear, practical answers to common heating questions, helping homeowners understand everyday issues, know what checks they can carry out safely, and when it is best to contact a qualified professional.

  • What is the difference between a combi boiler and a system boiler?

    A combi heats water straight from the mains on demand - no cylinder needed, which makes it compact and ideal for smaller homes or flats. A system boiler works with a hot water cylinder, storing a ready supply that can serve multiple taps or showers at once without the pressure dropping - better for larger homes with more bathrooms. There's also the conventional boiler, which needs both a cylinder and a cold water tank in the loft - common in older properties. A heating engineer can help you figure out which suits your home best.

  • Is an air source heat pump right for my home?

    Heat pumps pull warmth from the outside air (even when it's cold) and use it to heat your home and hot water. They work best in well-insulated homes, ideally with underfloor heating or larger radiators that work well at lower temperatures. In draughty or poorly insulated properties, the benefits are more limited. The Boiler Upgrade Scheme currently offers a grant of up to £7,500 towards installation, so it's worth getting a professional assessment to see whether your home is a good fit before committing.

  • How often should a boiler be serviced?

    Once a year, by a Gas Safe registered engineer. It keeps the boiler running safely, catches small issues before they become expensive, and is usually a condition of the manufacturer's warranty. Some home insurance policies require proof of regular servicing too. If you're not sure when yours was last done, book one before winter - better to find out before you're sitting in a cold house!

  • Why is my radiator cold at the top but warm at the bottom?

    This issue is almost always trapped air. Bleeding the radiator - using a radiator key to release the air - usually sorts it, and it's one of the few heating jobs you can safely do yourself. If bleeding it doesn't work, or if several radiators are having the same problem, it might be a pressure or pump issue. Worth getting a heating engineer in to have a look.

  • What are the signs my boiler needs replacing?

    Keep an eye out for: frequent breakdowns, energy bills going up without using more heat, unusual noises (banging, kettling, or whistling), a flame that's yellow or orange instead of blue, and any visible leaks or rust around the unit. If your boiler is over fifteen years old and ticking any of those boxes, replacing it is usually the more economical choice - modern boilers are significantly more efficient.

  • Is underfloor heating worth it and do I need a professional to install it?

    For a new build or a big renovation, underfloor heating is often a great investment - it heats rooms more evenly than radiators and can be more efficient, especially alongside a heat pump. Retrofitting in an existing home is more of a job, and how worthwhile it is depends on your floor types and how much disruption you're happy to deal with. Either way - wet or electric - it has to be installed by a qualified professional.

  • Why does my boiler keep losing pressure?

    Some pressure drop over time is normal, but if you're topping it up regularly there's usually a cause: a small leak in the system (which isn't always easy to spot), a pressure relief valve that's releasing water, or air in the system after bleeding radiators. Topping it up via the filling loop is fine as a short-term fix, but if you're doing it more than a couple of times a year, it's worth getting an engineer to look into why it keeps happening.

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