Ways to Prevent Window Condensation

Condensation forms on the inside of windows when warm water vapour hits the cold glass surface. This extra moisture is bad news for your home environment, as it can cause dampness and mould. Water can drip from your windows onto the window sill, which could cause wood rot if left wet for long periods of time.

Condensation forms on windows most often at nighttime because that’s when temperatures plummet; leading to not-so-good mornings. As you might expect, this is also why condensation is most present in the colder months of the tail-end of autumn, winter and the start of spring.

Day-to-day activities like cooking and cleaning generate water vapour. This steam immediately seeks out a cold surface and turns to liquid on contact. This results in damp walls and ceilings, especially in the colder months, if not controlled through ventilation or humidity management.

Relative humidity is a measurement of the amount of water vapour currently in the environment divided by the amount necessary for total saturation. So if you imagine your living room as a box which can hold 10 litres of water. If you fill it with 5 litres of water, the room will be 50% filled, or 50% RH. As the relative humidity of a room increases, it gets wetter and wetter, which is bad news for your health, comfort, home and belongings. The more water vapour present, the more condensation in your home.

Knowing the relative humidity of each room in your home is the first step to controlling it.

A hygrometer (or humidistat) is a great tool to keep track of the relative humidity in your home. It is one of the easiest and most accessible ways to find out the reactive humidity of your home at a glance. Find out more about hygrometers here.

Condensing dehumidifiers draw in humid air and expel dry air. They achieve this by chilling the humid air through a cold evaporator coil that causes it to condense into a drip tray. The dried air is warmed and released back into the home. This means that dehumidifiers make your home slightly warmer. Also because dry air requires less energy to heat than moist air, you'll need slightly less energy to maintain a warm home.

The Dryzone Dehumidifier & Air Purifier is a combination condensing dehumidifier and air purifier. First, the in-built Air Purifier filters humid air through a medical-grade H13 HEPA filter, before sending it to the refrigeration coil for dehumidification. Even when not actively dehumidifying, the Dryzone Dehumidifier & Air Purifier continues to purify the air.

It is capable of drawing 12 litres of moisture from the air every 24 hours and includes a smart tech humidity monitor to track the humidity of your home.

Don’t worry about when to switch your dehumidifier on and off - this smart device tracks the current humidity level of your home and ensures it is always within the comfortable levels of 55-65% RH. By only dehumidifying when a room genuinely requires it, the Dryzone Dehumidifier & Air Purifier helps to save energy.

By accurately managing the humidity of your home, the dehumidifier removes water from the air before it can condense on your bedroom and living room windows. You’ll wake up with a perfect view of the world outside, free from condensation, and hopefully you'll save a little money on your energy bills too!