Energy prices are skyrocketing. It is time to make our homes more sustainable and thus save energy. In summer, our homes use less energy than in winter. In summer you are outside more often and the heating does not have to be switched on. In winter, we often keep the windows closed to keep the heat in, but unfortunately that is when the problems arise. There is no fresh air coming into our well insulated houses. The lack of fresh air leads to high CO2 levels, which in turn leads to various health complaints.
• Ventilation as a way to save money
• General tips to save energy
• Save money with a controlled ventilation system
• Estimated calculation and savings of energy costs
Ventilation as a way to save money
In addition to high CO2 levels indoors, humidity that is either too low or too high also has a negative impact on your health. In winters we often have to deal with humidity levels in the house that are too high because we keep the windows closed. High air humidity is caused by cooking and showering, but also by simply breathing and exercising. Besides that, high humidity causes mold in the house and also makes it so that you have to use more energy to heat up the air, because humid air warms up less quickly than dry air.
Tips to save energy in the house
We have listed a number of tips you can already get started with to save money if you do not have a ventilation system. Make sure that the cold and moisture do not flow through to the rest of the house, when opening windows to ventilate your home. Ventilation systems can automate this process and nowadays they are sustainable and save energy costs compared to heating. Would you like to know which ventilation solutions are possible in your home?
- In one night your body and breath emit moisture roughly equivalent to a large glass of water. So leave your bedroom window ajar at night. After waking up, open the windows and curtains to refresh the air inside the room. After 20 minutes, close the windows again to avoid wasting too much energy during the day by having to heat up the now cold room.
- Always hang your laundry in a warm place to dry it faster. Be sure to ventilate the room to remove humidity. Also, close the door to this room so that the cold air does not spread throughout the house.
- Make sure that the fine dust and humidity from cooking can be removed, for instance by using extractor hoods or kitchen extractor fans.
- Don't shower with the bathroom door open, dry the shower after showering and ventilate the bathroom with a bathroom fan. This will ensure that humidity does not linger and has no chance of spreading.
- Insulate the crawl space under the house. This space is often damp and the air inside enters your home through cracks and seams.
Save money with a controlled ventilation system
In addition to the tips we have described above, you can also save money by using energy-efficient ventilation systems. We have listed a number of possibilities and tips for you with which you can create a healthy living environment and expect a lower energy bill:
Tip 1: A non-return valve behind the bathroom extractor fan or a grille with a non-return valve instead of a normal grille can quickly save energy. This is a very simple and cheap application and you will benefit from it immediately!
Tip 2: First of all, mechanical extract ventilation helps to remove contaminated and humid air from a room or house, making it easier to heat.
Tip 3: There are many people with outdated non-energy efficient (AC) mechanical fans in their homes. Using an energy-efficient (DC) fan saves a lot of energy and therefore money. This is easy to replace and the investment is quickly recouped.
Tip 4: Install a CO2 detector. These will continuously show the stats regarding your indoor climate and if necessary you can respond instantly by ventilating until it the indoor air quality is good once again.
Tip 5: CO2 controlled mechanical ventilation runs standard on a low setting. When Carbon Dioxide levels meet a certain threshold, the unit will ventilate more in this room. This way you are always assured of healthy air.
Tip 6: A heat recovery system provides you with a healthy living environment and no heat loss in the home, this is very sustainable. You can buy this either as a ventilation system or as a decentralised unit that can be used in one room and does not require major changes in the house. Find out what a MVHR unit is here.
Tip 7: To save even more energy, you can buy a CO2-controlled MVHR system. This system works the same as a mechanical extract ventilation (MEV) system, only it also saves heat. This system assures you of a responsible and energy efficient living environment.
Tip 8:Do you have a MEV system, but would you prefer to convert it to a MVHR? This is possible with the Brink Indoor Mixfan!
Estimated calculation and savings of energy costs
The difference in energy costs per year between an (outdated) AC ventilation unit and DC mechanical ventilation unit can be very large, we have done a sample calculation for you to explain.
We compared two baseline units based on an assumed daily ventilation pattern that consists of 8 hours of low setting ventilation, 14 hours in the medium setting and 2 hours in the high setting. The average AC ventilation unit under such condititions consumes 343 kWh per year, while the average DC ventilation system uses only 60 kWh each year. In this case, you save 83% (283 kWh) with a direct current ventilator. Assuming 19 pence per kWh, as described by the government, an AC fan will cost you around £65 per year in energy costs, while a DC fan will cost you £12. With a DC fan, you can save an average of £53 in energy costs per year.