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Heating, Ventilating and Air Conditioning (HVAC) systems help to regulate the climate and maintain the indoor air quality of homes and commercial buildings. While sophisticated and reliable HVAC systems have become common in daily modern life, they have not always been so widespread. However, the principles that these systems operate on have long been known to scientists and engineers. Even though advances in the reliability and cost effectiveness of HVAC systems continue to improve, we enjoy very mature technology from this industry segment today.

The modern air conditioning system has been in continual development since its invention in 1902 by Willis Haviland Carrier. The system that Carrier invented was used in a printing plant to regulate the temperature and humidity of the air, thus causing the process used there to operate more consistently and reliably. Thereafter, the demand for commercial air conditioning exploded and Carrier formed his own company. It was not until the 1950s, however, that residential air conditioning became wide spread.

Because many early air conditioning systems used toxic and flammable gases to produce cooling, their utility was limited, so in 1228, Thomas Midgley, Jr invented the first chlorofluorocarbons (CFC) for use in refrigeration systems. This became popularly known by the DuPont brand name Freon, and it greatly enhanced the safety and reliability of refrigeration and air conditioning systems. However, in the 1970s scientific studies were starting to show that the release of CFCs into the air was depleting ozone levels in the stratosphere, resulting in higher incidence of harmful solar ultraviolet radiation reaching the earth’s surface. Because of government action, the use of all CFCs and related chemicals have been restricted and are expected to be completely phased out by 2010. Newer non-ozone-depleting refrigerants have been developed and are being phased into HVAC systems currently available on the market.

Our understanding of properly engineered HVAC systems was further advanced after the World Health Organization (WHO) issued a report in 1984 on Sick Building Syndrome (SBS). SBS was found to result from poor indoor air quality, and several solutions have since been developed to prevent this condition from developing. Proper maintenance guidelines for HVAC systems can help to prevent SBS; additionally, the use of an air-to-air heat exchanger can be employed to increase the amount of fresh outdoor air that is brought into a building without sacrificing energy efficiency. The current recommendation from American Society of Heating, Refrigeration & Air Conditioning Engineers is to provide 8.4 exchanges of air within a 24-hour period.

With increasing costs for energy a primary focus, continued research today is improving the energy economy of HVAC systems. In an effort to reduce the ecological impact of new and existing building design, the U.S. Green Building Council promotes adherence to a set of guidelines known as Leadership in Energy and Environmental Design (LEEDS). Energy efficient HVAC systems are an important component to the success of the implementation of LEEDS standards.

Today we enjoy safe, efficient, and reliable HVAC technology. As an essential part of our daily lives, these systems will continue to be adapted to our changing needs by today’s graduating scientists and engineers.

Bardi Heating and Air conditioning is an Atlanta area HVAC contractor specializing in design and installation of air conditioning systems for residential and commercial project of any size. To learn more their services please visit this author’s website at http://www.Bardi.com

Article Source: http://EzineArticles.com/?expert=Alan_King

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by Jean Parker

If you are looking to increase your home’s curb appeal, it is something as simple as focusing on your front door and entryway. This is the first thing that many notice when they pass by or visit your home. A beautiful entry way and a path to your front door can make the appearance of your home look much different.

Changing the appearance of your entryway is quick and easy. A coat of paint, among other things, is one of the best ways to change its appearance. You do not need to choose a crazy color in order to make your entryway stand out. Painting you front door a complimentary color to the color of your home will do just the trick. For instance if you have a tan home, then a brown door will look nice. If you are looking to add more color to your entry way there are other ways to do so without painting your door and using obscure colors.

Plants and flowers do a great job of bringing in some color and life to a boring front door. Hanging baskets and flower pots can be traded out over the course of a season and can be swapped out fairly easily for new looks. Another easy way to make a nice difference is in the front door hardware. A nice, high quality door knob set will help protect your home from intruders and will also make it look more beautiful.

When you go shopping for your door hardware you want to make sure that you do not skimp on the price. This hardware is going to protect you from intruders and you want to make sure it is the best you can afford. A good rule of thumb to follow is the old saying, “You get what you pay for.” Along with the door hardware you should also consider upgrading your entryway lighting.

Most homes have an outside light beside the door. Houses usually have at least one fixture, most homes have one on either side of the door. There are so many different styles and looks to choose from, it could be difficult to make a decision. Another nice thing about these lights is that they are pretty simple to change, the wiring is already done and a few simple steps are needed. Just be sure to disconnect the power before doing any electrical work.

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Steel Windows are the architect’s choice for just about every kind of building. These windows are incredibly versatile, in that they can evoke both a modern and bold look, or conversely give the feel of classic style. In this article, we will discuss the five key benefits of choosing windows made of steel for your building — whether it be a home, commercial structure, hospital, school, or public building. These benefits are narrow sightlines, strength, versatility, lifecycle, and fire rating. When you are finished reading, you will have all the information you need in order to decide if these windows are the solution for your building.

The first reason is their narrow sightlines. When people think of steel windows, the quality most often associated with them is their narrow sightlines. As a consequence, over centuries, this attribute has been incorporated into just about every kind of building. Architects have taken advantage of this great quality inherent to steel windows and used their narrow sightlines to construct different architectural styles. The material’s massive and incredible strength allows for this minimalism in regards to sightlines. Other materials, such as aluminum, vinyl, or wood simply do not have the integrity to allow for maintaining their structure while having narrow sightlines. This gives steel windows a unique and distinctive appearance.

The second major benefit is their strength. Head to head, aluminum is three times weaker than steel. The advantage offered by steel’s inherent strength also allows it to hold glass lights of immense size and offer astonishing openings, even as the material maintains narrow sightlines. This also allows for the use of ventilators, which in a steel window do not rack with age or distort.

The third reason for choosing steel as your material for windows is its versatility. Whether the building has a Gothic theme, is a more traditional structure, or highly modern, steel windows complement the look of the building’s exterior and interior. Municipal buildings, churches, universities, private homes, commercial buildings, manufacturing facilities, transit terminals, hospitals and retail establishments have all benefited from using these type of windows.

The fourth benefit is their lifecycle. Far above and beyond other construction materials, steel windows offer unsurpassed durability. For example, in Europe, the original windows are still maintaining themselves in silent elegance even in buildings that are more than a century old.

In the United States, there are many examples of steel windows which after three generations still remain quite functional. In fact, when these windows are replaced, it is usually due to surface issues such as glazing, ventilator technology, or finishing, not the general functionality of the window. In essence, steel windows effectively stand the test of time with far more grace and elegance than other materials.

The fifth reason is their excellent fire rating. Manufacturers of steel windows offer a variety of designs which are fire rated, this fire rating confirmed by independent laboratory fire labels. This fire rating is not limited to fixed lites. A number of operable designs are able to be fabricated, provided specifications are constructed in consultation with individual manufacturers.

If you are looking for excellent window for any number of structures, consider steel windows. Architects give these windows the seal of approval for their narrow sightlines, strength, versatility, lifecycle, and fire rating. These windows complement any number of styles, and allow for a unique look for any building.

Optimum Window Manufacturing Corp. is the largest and most diversified manufacturer of Fire-Rated windows and doors in America. Specializing in cold-rolled steel, hot-rolled steel, aluminum, stainless steel and bronze windows. http://www.optimumwindow.com

Article Source: http://EzineArticles.com/?expert=Marcelo_Oleas

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By Jason Whitney

In today’s tight real estate market, those who do choose to put their houses on the market are certainly looking for any available advantage in the tight competition they are sure to face. Finding low-cost techniques that add charm and character is one great way to accomplish this goal. The good news is that you don’t have to invest a lot into a simple fix to make your home stand out. One technique you can do yourself is drywall texturing. You can follow some simple steps and find Drywall Texturing Made Easy.

First, be sure to allot a good amount of time for the project. You don’t want to rush through this artistic process. Also remember that the room will need to be painted when you are finished. To get started, the first step is to remove outlet and light fixture plates from the walls. Cover the floor, since even Drywall Texturing Made Easy can get messy. (Also, at this point, be sure to remove any wallpaper. It will not provide an adequate base for the joint compound that you will use, and will end up becoming a time-consuming mess to fix. This is not what you want a potential buyer to see in your home!)

The first step in Drywall Texturing Made Easy is to spread a thin coat of drywall compound around the walls where you want to start with an 8-12 inch straight trowel. A thickness of about 1/8 of an inch is ideal, but for a more varied texture, spread thicker. Start with just a small area; you don’t want to compound to dry before you complete the texturing portion of the application. It’s better to under estimate the time involved than to over estimate at this step.

After you’ve spread the compound, you can make any kind of texture you want. Experiment a little bit until you find something you like. Ideas include using old paintbrushes, wallpaper brushes, sponges, or even your fingers and hands. Go ahead and have some fun at this point, but remember that less is usually more when the texture is covering an entire room. Be sure to wear latex gloves if you are using your fingers or hands. It might not be a bad idea to wear them anyway. After you’ve finished a small portion, simply continue to work your way around the room, alternating between applying the compound and texturing it.

Jason Whitney writes about drywall texturing at http://www.drywalltexturepro.com/

Article Source: http://EzineArticles.com/?expert=Jason_Whitney

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With our energy and water sources depleting, people have begun to sit up and take notice. There are things that we can do to preserve our environment, and where we live. I am going to show you how to turn your properties into eco friendly homes. These will be simple fixes to make, some which can be more expensive than others, but all designed to save water and electricity.

If you have older windows in your home, they can be leaking out all the heat and the air conditioned air in your home. To prevent that, a good idea is the purchase double glazed windows for your entire home. These windows are made to keep the energy inside the home and keep the heat and cold outside. Although the windows can be rather expensive, it will be worth the energy that you are conserving and will also increase the value of your property.

Anytime you go into a room and it is either too cold or too hot, odds are there is not enough insulation in the walls and attic. That would be the time to consider replacing the insulation. Once this is done you will notice a difference almost immediately. The heat or cold stays in the room instead of going up and out the roof.

Everything you have done up to this point has been done to save on electricity. Now let us talk about solar panels. Solar panels are installed on top of your roof where they collect the suns rays. The rays are then changed into electricity to use in your home. It is a wonderful invention. Some research needs to be done and you will need a contractor to place them on the roof and explain how much electricity you can expect to save.

When you finally decide that you need new appliances, before purchasing go look at them and make sure they are energy efficient. Most appliances these days are, so finding them would be no trouble at all. A must to replace is the refrigerator, washer, dryer, and dishwasher. All of these new purchases will save up to 40 percent of the electricity that your old machines normally consume.

One very small change would be to purchase and place in new energy efficient light bulbs. Place these in every lamp and socket in your home. They come in the same watts and sizes as regular light bulbs. They also have the tube lights that are used in some kitchens and in the garage or workshop. It is said that these kind of bulbs consume about five times less energy than a regular bulb. Think about how much savings that would be over the next five years.

To save even more in your every day life turn off the faucet while brushing your teeth, turn off lights as you exit a room, and install low water toilets in all the bathrooms. Using the toaster oven as opposed to the large oven is also a great idea because it only consumes about a third of the electricity. Also, don’t forget to unplug small unused appliances, as they still use electricity when plugged in.

To sum it up, you now have a few ideas of getting your homes partially eco friendly. Do what you can now to upgrade your space, and add to it. For example you could add energy saving appliances one at a time. All of the eco upgrades that you add now will pay off in the future when and if you ever decide to sell your homes. You will also appreciate the savings when you start receiving the light bills.

Learn how you can save time and money on purchasing your green building materials.

by Gavin J. King

The hardest part about building your home may be choosing your building lot. Things like location, price, applicable taxes, zoning and density laws and building permits may be just a few of the issues you will be dealing with in getting your buildsite approved for construction.

Construction Loans

Banks, credit unions, and mortgage lending companies will give you finance options for your home. Prices range depending on the type and size of home you are planning to have built. Using an architect to draw up your plans will help you get the base price down. Your money lender will always want to see the home plans before lending you any money.

Find An Architect

From California to New York to Arkansas, home plans include foundation, framing, siding, plumbing and electrical details, and can range from as little as $600, to as much as several thousand. Hiring the wrong architect can cause you several severe problems, so don’t do it hastily. Then take these plans and prices to your lender, and see what they will offer you in terms of financing.

Don’t Be Too Rigid

Having a custom home built is an enormous project. Expecting the unexpected will help you deal with the inevitable weather delays for contractor disputes so be prepared. You need to be flexible and patient, and know that in order to have your dream home built, it will take time.

Following through to the end of the project is the goal, so don’t take your eye off the ball. As with so many other things in life, you just have to keep pushing and step by step you will reach your goal and complete building your dream home. If you don’t spend time doing this you may wash out at some phase, and that can cost you thousands of dollars.

Utilizing this outline will keep you focused. Spending your time learning about construction and improving on your own knowledge base will help you understand what is going on in each phase, and keep you in the know on your home construction.

About the Author:

The author enjoys writing articles about realtor in boise idaho & boise idaho real estate. Click on the above links to learn more about these topics!

When ready to start your construction make sure to learn how to submit your material lists to receive the best possible bids from suppliers.