How to cool our homes (even without ACs) An increasing number of people use air conditioners to stay cool as the earth becomes hotter. These require a lot of energy to run, which results in emissions that hasten global warming. Using more effective cooling technologies and rethinking our architecture may be able to assist us stop this vicious cycle.
United Nations • Climate change refers to long-term shifts in temperatures and weather patterns. Human activities have been the main driver of climate change, primarily due to the burning of fossil fuels like coal, oil and gas.
In Vermont, temperatures drop during the night. Take advantage of cooler summer evenings and open your windows to promote a cross-breeze. Bonus: This can also help you sleep better! The cooler air will circulate all night, allowing you to start fresh with a cool home in the morning. In building science, this is referred to as night-flush ventilation. Don’t forget to close the windows and blinds before things get too hot in the morning.
Summer sun delivers heat right through your windows. Block the heat with shades or blinds during the sunniest hours to keep your home cool without AC. This is a passive, or “natural” cooling method that is one of the cheapest and simplest way to keep your home cool in summer.
Many of the things that help keep your home warmer in the winter also help keep your home cooler in the summer. If you feel the temperature extremes in both seasons, consider a weatherization project. Cape-style homes and homes with varying ceiling height tend to overheat in the summer. A professional weatherization project with an Efficiency Excellence Network contractor can fix the areas that make the home too hot in the summer and too cold in the winter.
Large appliances give off significant amounts of heat. Wait to turn on your oven, range, dishwasher, and clothes washer until evening hours when temperatures are cooler. Also, consider hanging laundry outside to dry. You’ll save the cost of running the clothes dryer while reducing heat and moisture in the house.
If you can, take your cooking outside. If hot food is in order, fire up the grill instead of turning on the oven. Summer is not the time to roast chicken or make lasagna. Instead, plan for grilled dishes and salads to avoid generating more heat in the house.
Installing an awning, pergola, porch, or shade trees by your west windows will shield your home from hot afternoon rays. Direct sunlight is like a heater in the cooling season!
Fans keep air moving around, rather than cooling the air. Blow air directly on people to get a cooling effect or set up your fans to draw in cooler air from the outside (or a cooler part of the house) to the warm areas.
Exhaust fans in your kitchens and bathrooms capture hot air before it mingles with your house air and contributes to overheating. Operate your exhaust fans during showers or whenever cooking indoors.
In the summer, the fan blades should rotate counterclockwise (as you look up at it) to push the air straight down. Increase the fan speed on the hottest days.
Conlusion
Although these passive cooling methods won’t be able to cool your home as much as a heat pump, whole-home air conditioning (also known as central air conditioning), or a few strategically positioned ENERGY STAR-rated window units, they will nevertheless improve comfort levels. Using passive cooling strategies can help you save money even if your cooling equipment is efficient. They can reduce the temperature in your house, reducing the amount of time you need to run the air conditioning system and saving energy.