If your house is older, your windows probably allow air to seep in. Single-paned windows don't insulate as well as newer models. You can save up to $465 a year by replacing old single-pane windows with energy-efficient ones. In the U.S., several tax credits are available for replacing old windows with energy-efficient models. The US Department of Energy has a full list of these credits here. When chosen wisely, a skylight can provide beautiful natural light to your home while reducing your energy consumption. It's important to consider your home's position in order to maximize your skylight's benefits. Consult a designer or architect. An eco-friendly skylight is more than a hole cut in the roof with some glass in it. Many energy-efficient skylights exist on the market, but they should always be professionally installed to make sure that they are safe and efficient. Hardwood floors add value and beauty to a home, but many of the trees used in hardwood flooring take years to grow. If your house is up for a new floor, consider using sustainable materials such as bamboo instead. Bamboo grows very quickly and takes less land to produce, but it's still attractive and durable. Cork is another sustainable wood flooring option. Cork is softer than bamboo, so it absorbs noise and feels cushiony underfoot. It is sometimes less durable than bamboo. Shade trees can reduce the amount of energy you spend to cool your house on hot summer days. If your property doesn't already have shade trees, this is a step that will take some time before you see the full benefit. In addition to providing shade, trees absorb huge amounts of carbon dioxide and release oxygen. A single tree can produce enough oxygen for four people in a single day. If you're building a new construction home, try to work around existing trees. You could even incorporate them into your house design, such as building a deck under a huge shady oak. Place deciduous trees (trees that shed their leaves annually) near the south and west sides of your home. This will help them block harsh afternoon sunlight in the summer, but let sunlight reach your home during the winter. " Cool roofs reflect sunlight rather than absorbing it. This helps reduce your home's energy consumption. It can also extend the life of your roof. These roofs are especially good for people who live in hot climates, since they reduce the need for air conditioning. Cool roof coatings are available at many home supply stores and warehouses. These coatings are like extremely thick paint and can be applied fairly easily. They are usually white or very light-colored with reflective pigments that reflect, rather than absorb, sunlight. (It is not recommended to apply cool roof coatings to shingle roofs.) If you have a steep-sloped shingled roof, consider replacing your current shingles with cool asphalt shingles. These shingles have specially fabricated granules that reflect sunlight. If you have a metal roof, it already reflects a lot of sunlight. However, these roofs absorb a lot of heat, which can increase your energy consumption in the summer. Painting your metal roof with a light color or using a cool roof coating can increase its energy efficiency. Composting toilets usually do not use water to "flush" like traditional toilets. They can also recycle many types of human waste into fertilizer that can be used in agriculture. While they are initially more expensive to install than traditional toilets, they are far more eco-friendly and will eventually pay for themselves. Composting toilets are usually easiest to install and maintain in a rural or suburban setting. If you live in an apartment or urban high-rise, it may more difficult to install and maintain a composting toilet. Materials such as cedar naturally repel pests and water. They are also durable and low-maintenance. Replace old aluminum siding with a more sustainable option. There are other eco-friendly siding options, such as fiber cement board and particle board. These are durable and sustainable. Look for products that have been manufactured without formaldehyde. " If you are designing a new home or doing extensive renovations on an older home, consider talking with a design team about a "whole-house systems approach." This extensive approach considers many factors about your home, including local climate, your site's specific conditions, your appliance needs, etc. Because it takes all these factors into account, a whole-house systems approach can drastically reduce your energy consumption. Many designers and architects have experience in whole-house systems approach construction. Visit the National Association of Home Builders for more advice on finding a design team.
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One-sentence summary -- Replace old windows with energy-efficient windows. Install a skylight. Use sustainable flooring. Plant trees. Install a "cool roof. Consider installing a composting toilet. Use durable siding. Talk with a design team about a "whole-house systems approach.

Article: A moisture meter is a piece of equipment which, when placed directly against a wall, will analyze the moisture content of that wall. If you know that you have a leak within a certain wall, but are unaware of the precise location, place the moisture meter at 5 or 6 different spots on the wall. Whichever spot gives the highest moisture reading is closest to the leak. You can purchase or rent a moisture meter at a large hardware store or home-improvement store. These gadgets are frequently used by professional home-inspectors to find leaks or wet walls. Infrared cameras detect heat, and can indicate the temperature of a wall. A leaky, wet wall will have a cooler temperature than the surrounding wall. Train an infrared camera on a wall with a leak, and look to see which section of the wall is the coldest. This will be the section of the wall nearest the leak. When using an infrared camera, hot objects will have red or orange coloring, while cool objects will have blue or purple coloring. You may be able to rent an infrared camera from a professional contractor, a home-improvement center, or from a photography shop. Use a utility knife to score a line about 10 inches (25cm) long into your drywall at the location where you see visible signs of a water leak (mold, discolored drywall, etc.). Then, using a drywall saw, cut along the line you just scored. Cut a hole in the wall large enough for your head to fit inside. Stick your head in the wall and look around until you spot the source of your leak. Enlarge the hole so that you can also insert a flashlight to see better inside the wall, if needed. Often, the patch of wall which shows signs of a leak is not directly in front of the leaky pipe or fixture. Water can drain along the outside of pipes in your walls or trickle many feet down the inside of your walls before the telltale signs of a leak become visible. Both a utility knife and a drywall saw can be purchased at your local hardware store.
Question: What is a summary of what this article is about?
Scan for moisture inside walls with a moisture meter. Find the cold, leaky part of a wall with an infrared camera. Cut into your drywall to find the source of a leak.