Wednesday, July 17, 2013

Summer Energy-Saving Tips for Residential Customers

These are from the ESource website. We hope you find them useful...

By Lee Hamilton, Spencer Sator

Q: Do you have a list of top energy-saving tips for the summer that we can share with our residential customers?

A: After researching our own materials as well as those from utility and state-sponsored programs, we found some common themes linking energy-saving advice for residential customers. In general, specific energy-saving tips fall into one of the following three categories: keeping heat out of the home, minimizing heat generation within the home, and optimizing use of the air conditioner (AC).

We then compiled a list of advice and tips based upon those three categories to help residential customers reduce their energy use during the summer. Although this list contains many proven measures, the possibilities for energy-saving techniques and measures are nearly infinite. Consequently, this list should not be considered comprehensive, but rather representative of many available options.

Keep the Heat Out
*       Add weather stripping around doors and windows. This helps seal your home, preventing hot air from infiltrating while keeping cool air inside.
*       Caulk and seal around plumbing openings. Small gaps and openings around plumbing penetrations often go unnoticed, but they have the same effect as a hole in the wall. Sealing these openings blocks hot air from the outside and keeps cool air inside.
*       Use Energy Star doors and windows. Energy Star–qualified products will cost more up front, but they’ll help save energy by reducing heating and cooling costs.
*       Install reflective window films. Install window films that block solar heat gain, reducing the cooling load on your AC unit.
*       Keep sunlight out. Close your blinds, shades, drapes, and curtains during the warmest parts of the day, particularly on the sunny side of your home. This will help keep your home cooler, reducing the workload on your AC unit.
*       Open the windows at night. Take advantage of natural ventilation by opening your windows at night once it’s cooled down. This uses free outdoor air to cool your home, allowing you to shut off the AC. Just don’t forget to close the windows in the morning!
*       Plant shade trees and shrubbery. Planting trees, hedges, and other shrubs on the sunny sides of your home can provide natural shading and cooling. This reduces the solar heat gain during the summer months. In addition, shading your AC’s condensing unit with shrubs or trees can also reduce its energy use.
*       Add or upgrade insulation. Insulation isn’t only for the winter time—it’s also useful during the summer. Proper insulation will help keep your house cool by preventing hot air from creeping in.
*       Ventilate your attic. Heat can build up in attics, particularly in hot, sunny climates. Proper ventilation will help remove that heat to the outdoors; otherwise that heat can “drop in” to your home, keeping the inside warm long after it’s cooled off outside. A qualified contractor can assist with this.

Minimize Heat Generation
*       Save heat-generating tasks for cooler times of day. Tasks like dishwashing, cooking, and washing clothes generate a lot of heat. Avoid doing these things during the hottest parts of the day; wait for the cooler periods at night or in the early morning.
*       Turn off unused electronics. Things like TVs and computer monitors, if left on, consume unnecessary energy and generate heat. Using smart power strips, which turn things off for you, can help reduce this wasted electricity.
*       Turn off unnecessary lights. Lightbulbs generate heat when they are turned on. Turning lights off and using desktop or task lamps rather than overhead lighting when possible can help keep rooms cool.
*       Use energy-efficient lighting. Incandescent bulbs are inherently inefficient, expelling 90 percent of their energy as heat. Using efficient alternatives such as compact fluorescent lamps (CFLs) or light-emitting diodes (LEDs) will reduce the heat generated by lighting.

Optimize AC Use and Ventilation
*       Turn your thermostat up during the day. Turning a thermostat up during the day can mean large savings and help you avoid peak charges. If you have a programmable thermostat or an AC timer, set it to start cooling no more than 30 minutes before you expect to return home. And when you’re at home, set the thermostat to 78° Fahrenheit or higher.
*       Keep vents clear and open. Make sure that things like furniture and curtains are not blocking air vents; blocked vents can put extra strain on your AC unit and interrupt the delivery of cool air. Also, verify that vents are open in the rooms being cooled.
*       Replace air-conditioner air filters regularly. Dirty air filters restrict airflow and cause your AC to run longer than necessary. Replace filters every 30 days during cooling season.
*       Schedule regular AC maintenance. Having your cooling equipment serviced annually in the spring, before the summer heats up, can keep it running efficiently and help you avoid equipment malfunction when you need cool air the most.
*       Seal your ducts. If you have ductwork connecting your air conditioning unit to vents throughout your home, a lot of cool air can be lost through gaps and cracks, particularly at the seams. These gaps can be sealed with metal-backed tape or duct sealant.
*       Insulate your ducts. Cool air traveling through ducts that are in hot or unventilated areas of the home—such as an attic—can heat up quickly and render your air-conditioning system a lot less efficient.
*       Replace an older AC unit with an Energy Star model. Replacing old air conditioners—those 10 years old or older—with new Energy Star–qualified models can save you over 30 percent on your cooling costs. These units are expensive, but the cost difference will be paid back over time by way of smaller energy bills.
*       Close all windows and doors when the AC is running. Make sure all windows and doors are closed when the AC is turned on. Otherwise, cool air will rush out of the opening, wasting huge amounts of energy and putting a heavy load on your air conditioner.
*       Make use of fans. The air moving across your skin has a cooling effect, allowing you to increase your overall thermostat setting. Standing fans and desk fans can cool small areas, and ceiling fans can make a difference in larger ones. Just make sure any ceiling fans are blowing the air downward to get the best results.
*       Add a whole-house fan. These fans are typically installed in the attic and can help ventilate the entire home by replacing the old air with fresh outdoor air. Be sure to open a window in each room before using a whole-house fan—this will assist with the ventilation and cool the entire house.
External link*       Keep your AC unit out of the sun. The hotter an AC unit is, the harder it has to work to cool your home. Avoid installing the unit on the south and west sides of your home, if possible, and if not, plant trees or build a structure to give it some shade.

Additional Resources
No- and Low-Cost Energy-Efficiency Tips for Renters(PDF), E Source, RES-P-10-ESCD (2009)
Summertime Energy-Saving Tips , California Energy Commission
No-Cost and Low-Cost Tips to Save Energy This Summer , U.S. Department of Energy
Tips , Efficiency Nova Scotia Corp.
Energy Saving Tips , Flex Your Power
Guides & Tips , Baltimore Gas and Electric Co.
Saving Energy on Heating and Cooling  (PDF), National Grid (2008)
Guides & Tips , BC Hydro (2012)

1 comment:

Anonymous said...

Your best post ever.

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