Increased dependence on artificial heating and cooling appliances can cause a massive increase in your energy bill. Although using an HVAC system is non-negotiable at certain times of the year, there are many ways by which you can take advantage of natural ventilation to make your home more energy-efficient.
Optimising air flow does not only mean having more windows or openings in your house. Sometimes, the placement of the window can also bring heat. Designing windows can help maximise the benefits of natural ventilation, which not only keeps the indoor temperature more comfortable but also enhances air quality.
Cross ventilation by the strategic placement of windows and doors
Cross ventilation refers to the natural movement of wind entering one area of the structure and exiting out the other. Successful cross-ventilation depends on the size of the windows, the position, and the path that will lead wind to move from one end of the house to another. It also goes without saying that cross-ventilation only works when you keep windows and doors open. As such, it is best to have window controls which will provide convenient access to closing and opening them.
Achieve better air circulation using oblique angles
Indoor air circulates better when wind enters at an oblique angle. Wind moving at a 45 to 55-degree angle tends to be more turbulent hitting corners and effectively causes an indoor cooling effect.
Stack ventilation
You create a stack effect when lighter warm indoor air gets pushed out by denser and cooler outdoor air. By creating openings at high points and low points in the structure, you can successfully create a natural stack effect. If openings are too high up, you can add manual window controls for easier access.
Install fans indoors to promote air flow
Hot air naturally goes up and escapes through openings in your home. You can make hot air escape faster by using fans to push hot air upward. Ceiling fans should move counter-clockwise to push warm air up and out of your house effectively.
Use the landscape to cool your home naturally
Another useful yet practical way to improve natural ventilation in your home is through landscaping. The wind coming from a particular direction becomes cooler as it passes through vegetation. Trees and plants can also help shade areas of your home that are exposed more to sunlight at specific hours of the day. Apart from the cooling effect of vegetation, it also helps funnel wind and maintain air movement around the house.
Invest in appliances wisely
If the climate is mild in your area, natural ventilation will provide sufficient cooling during summer. But when it is not enough to keep the indoor temperature comfortable, you will likely have no other choice but to use an air conditioner. In the interest of energy-efficiency, ensure that you invest in a high-efficiency cooling appliance. The initial cost may be significant, but you will save more on your energy bills over time. By maximising natural ventilation and using only high-efficiency cooling appliances for your home, you can achieve a ‘green space’ at a minimal cost.
