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It Begins With the System Story
Now that you've identified your comfort challenges, you can rest easy. That's because there are comfort solutions for your home. |
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Before we explain how your home can be more comfortable, it's important to first understand exactly what a home comfort system is. The most common is a forced air system which uses air ducts to carry conditioned air throughout your home. A typical forced air system employs an air conditioner, furnace and coil, or a heat pump and air handler. In some parts of the country a heat pump and furnace, or air conditioner and air handler are more appropriate for heating and cooling your home. All of these configurations are called split systems because they require both a unit outdoor and a unit inside your home. |
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A system that is too large will cool or heat your home quickly, but you still may not feel comfortable. That's because it will satisfy the thermostat before it can adequately remove sufficient moisture from the airwhich will make summer stickier than it should be. And, the stress of short-cycling (too many starts and stops) will shorten the life of your equipment and increase your heating and cooling bills. On the other hand, a system that is too small just cannot get the job done. The air conditioner will run constantly in the summer and the furnace will do the same in winterwhich is something you may have indicated on your Home Comfort Check List.
In the heating and air conditioning industry terms like SEER, AFUE and HSPF are used to indicate the efficiency of different types of equipment. Minimum efficiencies have been established by the Federal government, but in general, it's important to remember that the higher the efficiency rating, the greater the energy savings. When properly selected, higher efficiency matched systems offer improved comfort at reduced operating costs. When selecting a heating and air conditioning system, it's important to think not only about the initial purchasing cost, but also about how much it will cost to operate over the years. That's why a high efficiency system makes so much sense. Your initial investment may be more, but your long-term savings may be significant. Take a look at the chart below and see how the SEERs measure up.
If your current air conditioner is more than 10 years old, it could be as low as a 6 SEER. Compare the annual cooling bill of a 6 SEER system to that of a new system with a higher SEER such as Trane's 10, 11, 12, 14 or 18. For instance, if the annual cooling bill of a 6 SEER system was $1000, it could cost only $333 for an 18 SEER system, or an estimated annual savings of 67%. Now, that makes dollars and sense, doesn't it? |
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| 6 SEER | 10 SEER* | 11 SEER | 12 SEER | 14 SEER | 18 SEER | |
| Annual Cooling Costs |
$600 | $360 | $330 | $300 | $240 | $200 |
| $800 | $480 | $440 | $400 | $320 | $267 | |
| $1,000 | $600 | $550 | $500 | $400 | $333 | |
| $1,200 | $720 | $660 | $600 | $480 | $400 | |
| $1,400 | $840 | $770 | $700 | $560 | $467 | |
| Savings | 0% | 40% | 45% | 50% | 60% | 67% |
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* Minimum efficiency established by the Department of Energy. This estimated savings chart is based on Trane equipment only. Potential savings may vary depending on your personal lifestyle, system settings, equipment maintenance, local climate, actual construction and installation of equipment and your duct system. Are your heating and cooling bills too high? Higher efficiency, two-stage matched systems can take care of this. (Trane's XL 1800 system is the ultimate in energy efficiency.) Is your current system noisy? Installing a high efficiency variable speed two-stage furnace and a two-stage air conditioner can significantly reduce the noise level of your system. In lighter load operations, these systems spend 90+ percent of their time on first stagewhich makes them quieter and more energy efficient. |
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Are there rooms in your home that are always too hot or too cold? In well-designed home comfort systems, proper ductwork is just as important as the equipment. It you're experiencing temperature variations, you may need ductwork modifications. Your dealer will need to evaluate your ductwork installation and possibly perform a room by room load calculation. Do you have problems with lingering cooking odors? An electronic air cleaner will help reduce these. And, does your furnace short-cycle, constantly turning off and on? A two-stage variable speed furnace delivers more even, continuous heating, so short-cycling becomes a thing of the past. |
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Air Conditioner and Furnace The most common system configuration in many parts of the country.
Basically an air conditioner works like this: Connected to the inside cooling coil, the compressor pumps refrigerant back and forth, extracting heat and moisture from the indoors. It transfers the heat to the outdoors. Warm indoor air is blown over the inside coil, then is cooled and distributed throughout your home. Today, the Federal government requires that all new models have a minimum SEER rating of 10. Trane's full line of air conditioners range in efficiency from 10 to 18 SEERthe highest in the industry. Trane's 18 SEER air conditioner actually has two compressors for two-stage cooling, giving it the ability to handle your comfort regardless of whether it's a moderately warm day, or the hottest day of the summer.
Trane furnaces are uniquely designed to provide maximum heat with minimum fuel usage. And they think for themselves. Key furnace control functions are integrated into one microelectronic system which monitors the thermostat and gas valve ensuring precise temperature control. The current minimum AFUE requirement for furnaces is 78 percent. Trane offers a full line of single-stage, two-stage and two-stage variable speed furnaces that range from 78 percent to 92 percent AFUE.
An air cleaner is an integral part of a home comfort system, filtering dust and pollutants out of the air you breathe, and keeping your rugs and home furnishings cleaner as well.
To deliver the highest system efficiency, performance and comfort, an indoor cooling coil must be matched in size and rated with your air conditioner.
If you have an air conditioner outside, then you also have an indoor coil and a furnace inside. You might say the coil is the other, less visible half of your outdoor unit, yet its function is vital. As indoor air flows across it, heat and moisture are drawn out, leaving the air that returns to your living space cool, comfortable and conditioned. And, because the coil was designed to work in tandem with your outdoor unit and your furnace, it's imperative that they match in both size and efficiency. Many times, homeowners replace their air conditioners without replacing their outdoor coil at the same time. A new air conditioner's efficiency, size and moisture removal ability will be significantly reduced if it's paired with an old, existing coil because an unbalanced system means higher than necessary cooling bills and lower levels of comfort.
With Trane's higher efficiency variable speed systems, you can enjoy the enhanced comfort of our exclusive Comfort-R airflow system. Set by the installer, the Comfort-R airflow system is a method of ramping up the airflow so it gets warmer and cooler faster. This means comfort is attained much sooner than a standard system can provide. And there's something else the Comfort-R airflow system can do to improve your comfortduring mild weather conditions it greatly increases moisture removal, which is particularly important in parts of the country where humidity is a problem. There's one final variable speed benefit you'll want to know about. Because the variable speed motor ramps up slowly under normal conditions, it's so quiet you may not even think your system is running. |
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Customized Comfort Control A zoned home comfort system is designed to be flexible so you can program it to match your lifestyle. In a nutshell, zoning is the independent temperature control of various areas of your home. It doesn't matter if it's done with one system or multiple systems, with dampers or without dampersthe concept is the same. And, here's the beauty of itwith zoning, you can select your own comfort level in each zoned area. Have you sometimes wished you could heat or cool only the rooms you spend the most time in, rather than heating and cooling your entire home? Well, this is possible with zoning. That's because a zoned heating and air conditioning system lets you independently control the temperature in different parts of your house. Probably the best way to explain how zoning works is to compare it with lighting. Each room in your home has its own light switch. These individual light switches allow you to light only the areas you need instead of the entire house. Zoning works much the same way, giving you control over your comfort, room by room by room. There are basically three different ways that zoning can be applied to your home. For example, your home could be zoned with equipment. This means you could have twoor morecompletely separate comfort systems, each with an air conditioner, a furnace and a thermostat. One system might supply conditioned air to a downstairs area, while the other system handles the upstairs area. Or your home could be zoned with controls and dampers, using a single comfort system. In this case, your home could be divided into as many as eight areas or "zones," with each zone having its own sensor that monitors the temperature and controls it with a motorized mechanical damper. The third was is simply a combination of these two methods with two or more systems, each zoned with controls.
A home that has been zoned with controls, using a single comfort system would consist of an outdoor air conditioner or heat pump, an indoor furnace or air handler, a system controller, zone comfort sensors, and a modulating damper for each zone. For a better idea of how this works, take a look at the illustration shown below. As you can see, each zone has its own comfort sensor which acts as an individual thermostat. These sensors relay information to the system controller. |
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When it's Time to Purchase After you've done your homework, the next step is selecting a dealer. Here are a few things to consider. When you have work done on your home, you literally have to live with the results. When it involves your home comfort system, it takes on even greater meaning since your indoor environment is involved. So, when the time comes to repair, replace or add a central heating and air conditioning system to your home, take extra time and care in selecting a dealer. It could make a big difference in your happiness and peace of mind. Remember, your home comfort involves more than just purchasing the right equipment. |
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Your local Trane dealer has been specially trained to help you determine your comfort needs as well as the system size and components that are just right for your home. The way he or she determines this is with a heat loss/heat gain analysis, sometimes called a load. The dealer will measure the windows, check the insulation, ductwork and building materials, plus other things that can directly affect system size and performance. He or she will also ask you questions about your lifestyle and your current comfort challenges. This may take an hour or more, but it's well worth the investment in time.
If you choose to purchase a home comfort system for Trane, you can rest assured that you are buying some of the finest equipment manufactured today. But we realize that purchasing a comfort system can be a major investment. To make purchasing as painless as possible, you may want to take advantage of Trane's consumer financing programs. Your Trane dealer can explain the details and help you identify the credit plan that's just right for you. And, there's something else you should be aware of. Many times local dealers offer special promotions that add value to the purchase of a system. Don't forget to ask your dealer about any special offers that you may qualify for. |
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All Trane products are manufactured with the highest standards of quality and are backed by some of the best warranties in the industry. Nevertheless, we understand that mechanical components are occasionally subject to failure. Our extended warranty program was designed to give you complete peace of mind for the length of your agreement. And, Trane pays the bills for any replacement parts. |
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Glossary of Terms AFUE: Annual Fuel Utilization Efficiency. A measure of a gas furnace's efficiency in converting fuel to energy-the higher the rating, the more efficient the unit. For example: a rating of 90 means that approximately 90 percent of the fuel is used to provide warmth to your home, while the remaining 10 percent escapes as exhaust. BTU: British Thermal Unit. This is the amount of heat it takes to raise one pound of water one degree Fahrenheit. For your home, it represents the measure of heat given off when fuel is burned for heating or the measure of heat extracted from your home for cooling. CFM: Cubic Feet per Minute. A standard measurement of airflow. A typical system requires 400 CFM per ton of air conditioning. Capacity: The output or producing ability of a piece of cooling or heating equipment. Cooling and heating capacities are referred to in BTUs. Comfort-R Airflow System: An exclusive feature of a high efficiency home comfort system from Trane. This method of ramping airflow gives you greater humidity control in cooling and provides warmer air during heating start up. Compressor: The heart of an air conditioning or heat pump system. It is part of the outdoor unit and pumps refrigerant in order to meet the cooling requirements of the system. Condenser Coil or Outdoor Coil: In an air conditioner, the coil dissipates heat from the refrigerant, changing the refrigerant from vapor to liquid. In a heat pump system, it absorbs heat from the outdoors. Damper: Found in ductwork, this movable plate opens and closes to control airflow. Dampers can be used to balance airflow in a duct system. They are also used in zoning to regulate airflow to certain rooms. Evaporator Coil or Indoor Coil: The other half of your air conditioning system located inside your home in the indoor unit. This is where the refrigerant evaporates as it absorbs heat from the air that passes over the coil. Gas Furnace Heat Exchanger: Located in the furnace, the heat exchanger transfers heat to the surrounding air, which is then pumped throughout your home. HSPF: Heating Seasonal Performance Factor. This rating is used in measuring the heating efficiency of a heat pump. The higher the number, the more efficient the unit. Package Unit: A heating and cooling system contained in one outdoor unit. A package unit is typically installed either beside, on top of the home, or sometimes in the attic. Refrigerant: A chemical that produces a refrigerating effect while expanding and vaporizing. Most residential air conditioning systems contain R-22 refrigerant. R-22 is regulated by international controls under the Montreal Protocol and in the United States by the Environmental Protection Agency. It has a long life ahead of it as it is scheduled to be in production until the year 2020. It's used in approximately 95 percent of air conditioning equipment manufactured in the U.S. today. SEER: Seasonal Energy Efficiency Ratio. A measure of cooling efficiency for air conditioners and heat pumps. The higher the SEER, the more energy efficient the unit. The government's minimum SEER rating is 10. (It's similar to comparing miles per gallon in automobiles.) SEET: Seasonal Extreme Environmental Test lab. This is Trane's torture chamber for heating and air conditioning systems, where five years of service are condensed into 16 torturous weeks. If a product doesn't make it through our SEET lab, it's not manufactured. We push our equipment to extremes because we'd rather test them in our lab than in your home. Split System: The combination of an outdoor unit (air conditioner or heat pump) with an indoor unit (furnace or air handler). Split systems must be matched for optimum efficiency. Thermostat: A thermostat consists of a series of sensors and relays that monitor and control the functions of a heating and cooling system. Ton: A unit of measurement used for determining cooling capacity. One ton is the equivalent of 12,000 BTUs per hour. Zoning: A method of dividing a home into different zones so each zone can be independently controlled depending on use and need.
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