This is the exact house temperature your thermostat should be to stop damp, mold, and condensation

As surprising as it may sound, keeping your thermostat in winter at a consistent temperature is an effective way to reduce the risk of damp, mold and condensation in your home, without significantly impacting your energy bills.

In fact, HVAC pros suggest doing so will not only keep your home nice and cozy, but ensure you won't overwork your thermostat through the colder months, while combating dreaded mold, mildew, and musty odors at the same time.

Here, we spoke to our energy and heating experts for their tips on the best temperature for a thermostat in winter, and why you should be keeping yours between 68-72° Fahrenheit at all times.

Why you should keep your thermostat at a consistent temperature

Josh Mitchell, HVAC technician and owner of AirConditionerLab explains, 'Dampness and mold grow in areas where moisture is present on surfaces, and this usually happens when temperatures change and cause condensation to form.'

For example, when the temperature in a room drops, moisture in the air may settle on cooler surfaces, leading you to wonder how to get rid of condensation inside windows, and on walls. Condensation inside windows can be bad if left untreated, leading to mold and damaged seals.

'To prevent this, it's important to maintain the best temperature for a room,' continues Mitchell. 'Keeping the temperature stable reduces the chance of condensation forming, which helps control moisture,' preventing common types of household mold from thriving.

Mitchell clarifies that letting the temperature of your home drop too low overnight or during the day can create cool spots, where moisture condenses, while keeping temperatures steady prevents these cool spots from forming. This, therefore, helps avoid dampness and mold-friendly conditions.

'This approach is particularly useful in colder climates, or in homes with older windows and insulation, where surfaces are more prone to cooling down quickly,' he adds.

It is advisable to avoid this however, if your home is poorly insulated, or you have a particularly old heating system as running it constantly may cause it to overwork whilst not retaining it well. It also helps to know where a thermostat should be placed for accurate readings.

All prices correct at the time of publication.

What temperature to set your thermostat to

To avoid any common thermostat mistakes, experts warn that your thermostat shouldn't be set too low, but it also shouldn't be set too high, either.

To get it right, Elizabeth Reilly from GreenSavers, 8-time ENERGY STAR Contractor of the Year, advises, 'For most homes, setting the thermostat between 68-72° Fahrenheit (20-22° Celsius) will work well to balance comfort, energy-efficiency, and to keep dampness and mold at bay.'

When considering the ideal temperature to set your thermostat on when on winter vacation, this should be lowered slightly, to approximately 59-60˚F. This will ensure your home retains necessary warmth, while making it quicker and easier to bring it back up to temperature when you return home.

Why this method is energy efficient

We're all looking for ways to cut energy bills, and cheap ways to stop mold, and this method can actually save energy in the long run, while reducing the risk of damp, mold and condensation, says HVAC expert Josh Mitchell.

'Letting your home cool down too much forces your heating system to work harder to restore the temperature, especially in well-insulated homes,' he warns.

In fact, studies from the U.S. Department of Energy suggest that keeping your thermostat steady can reduce overall energy usage by 5 to 10 per cent, depending on your system's efficiency and the weather. This is because keeping your home at a consistent temperature means your heating system only has to make minor changes as outdoor weather fluctuates, reducing the strain on the system.

On top of that, according to Bill Taylor, HVAC contractor manager at South Jersey Gas and Elizabethtown Gas, investing in a smart thermostat is 'one of the best ways to conserve energy,' while keeping mold at bay

He says, 'Whether you're an early adapter or late to the game, technology continues to revolutionize how we live our lives in countless ways. A smart thermostat is a Wi-Fi enabled device that automatically adjusts heating and cooling temperature settings in your home for optimal performance from a phone, tablet, or smart speaker.

'Another big benefit? The flexibility and customization! Smart thermostats can adjust the temperature based on your lifestyle and schedule from anywhere, at any time.'

If you're interested in making a smart thermostat one of your smart home must-haves, Taylor recommends installing it properly, with the help of an expert to get you started, and tracking your heating habits. 'The smart thermostat can track usage and habits and identify areas where you can reduce energy,' he says. 'By monitoring usage, you can identify patterns and adjust your thermostat settings accordingly to optimize your energy usage moving forward.'

Importantly, though, Shawn McLaughlin, CEO of Emporia Energy, points our that homeowners should be aware of time-of-use pricing in their area, and consider this when deciding whether setting your thermostat to a consistent temperature is right for your home.

'This is a common practice where utilities can charge three to four times the standard rate for energy used during certain peak hours,' he says. 'Since utilities have to power non-energy efficient supplies during these periods, when everyone is home cooking, doing laundry and homework, energy costs are higher as well.'

Therefore, investing in a smart thermostat, and reducing peak hour energy use by 75 to 80 per cent, can lower a household's electric bill by 30 to 40 per cent.

FAQs

When should you not keep heating at a constant temperature?

While doing so is often beneficial, this method is not advised for homes with poor insulation or an old, inefficient boiler, as the heat won't be retained and the boiler, which already uses large amounts of energy to run, will be overworked.

Instead, to keep a poorly insulated house warm, use window film as an affordable solution to glass insulation, seal drafts, and use heaters strategically around the home. Keep an eye (and ear) out for any signs your boiler needs replacing, and be prepared to call in the professionals if any become apparent.

Experiencing any common thermostat problems? Our expert-led guide breaks down how to fix them fast.

Plus, if you've spotted condensation outside your windows, it might be a warning sign your insulation is failing if it doesn't clear as the weather outside naturally warms up.