For energy efficiency, your home should be properly insulated from the roof down to its foundation. This includes the following areas: * Attic spaces o Attic access doors to unfinished attics o Knee walls in finished attics * Ducts in unconditioned spaces * Cathedral ceilings * Exterior walls * Floors above unheated garages * Foundations [...]
Posts from ‘April, 2009’
Selecting Insulation for New Home Construction
Your state and local building codes probably include minimum insulation requirements, but to build an energy-efficient home, you may need or want to exceed them. For maximum energy efficiency, you should also consider the interaction between the insulation and other building components. This is called the whole-house systems design approach. To properly insulate a new [...]
Purpose of Ventilation
Your home needs ventilation—the exchange of indoor air with outdoor air—to reduce indoor pollutants, moisture, and odors. Contaminants such as formaldehyde, volatile organic compounds, and radon can accumulate in poorly ventilated homes, causing health problems. Excess moisture in a home can generate high humidity levels. High humidity levels can lead to mold growth and structural [...]
Detecting Air Leaks
You may already know where some air leakage occurs in your home, such as an under-the-door draft, but you’ll need to find the less obvious gaps to properly air seal your home. For a thorough and accurate measurement of air leakage in your home, hire a qualified technician to conduct an energy audit, particularly a [...]
Air Sealing
Air leakage, or infiltration, occurs when outside air enters a house uncontrollably through cracks and openings. Properly air sealing such cracks and openings in your home can significantly reduce heating and cooling costs, improve building durability, and create a healthier indoor environment. It is unwise to rely on air leakage for ventilation because it can’t [...]
How to Read Residential Electric Meters
he basic unit of measure of electric power is the watt. One thousand watts are called a kilowatt. If you use one thousand watts of power in one hour you have used a kilowatt-hour (kWh). Your electric utility bills you by the kWh. The standard electric power meter is a clock-like device driven by the [...]
Making Your Own Clean Electricity
Generating electricity using your own small renewable energy system fits the circumstances and values of some home and small-business owners. Although it takes time and money to research, buy, and maintain a system, many people enjoy the independence they gain and the knowledge that their actions are helping the environment. A renewable energy system can [...]
Buying Clean Electricity
The electricity industry is changing. At least 50% of customers have the option to purchase renewable electricity directly from their power supplier, and all customers have the option of purchasing renewable energy certificates. Such power is sometimes referred to as “green power” or “clean power.” In most states, you can buy clean power through one [...]
Reducing Your Electricity Use
There are many ways you can reduce electricity use in your home and help reduce your energy bills. Also, if you’re interested in using a small renewable energy system to make your own electricity, reducing your electricity loads will help make your system more cost effective. You can reduce electricity use in your home by [...]
When to Turn Off Personal Computers
If you’re wondering when you should turn off your personal computer for energy savings, here are some general guidelines to help you make that decision. Though there is a small surge in energy when a computer starts up, this small amount of energy is still less than the energy used when a computer is running [...]