HVAC Learning Center. MYTH The bigger the air conditioner, the better it will cool my house. Bettis actuators and controls have been global leaders in their industry applications for more than 55 years. Bettis broad range includes quarterturn. Free downloadable copies of installation and service manuals for heating, heat pump, and air conditioning equipment hard to find manuals for older or discontinued. View and Download GMC Acadia 15919282 owners manual online. General Motors Company 2009 Automobile Owner Manual. Acadia 15919282 Automobile pdf manual download. Electricity And Controls For Hvac R Pdf Output Printer' title='Electricity And Controls For Hvac R Pdf Output Printer' />Electricity And Controls For Hvac R Pdf Output FileBUSTED Oversize units may create bursts of cold air, tricking thermostats or control systems into shutting off the system before the entire house reaches the desired temperature. This cycling may end up causing excess wear and tear on the unit, affecting your indoor comfort level, and influencing your overall energy costs. When an air conditioner is sized and installed properly by a professional HVAC technician, it will cycle on and off at various intervals to maintain the temperature setting on the thermostat or control system. It is not unusual for an air conditioner to operate using long on and off cycles. In fact, this is preferred for energy efficient performance and humidity removal. When a unit is not properly sized and installed, the unit may cycle on and off quickly and quite frequently. This situation may not allow the unit to operate as efficiently as it was designed and indoor comfort is risked because the unit cannot remove enough humidity. While a bigger unit may seem to offer powerful cooling performance, a unit sized properly is the best option for long term durability and comfort. MYTH Setting a thermostat or control system to an extreme cold temperature will cool the house faster BUSTED If the indoor temperature us 7. Full line catalog of Industrial controls including pressure gages, manometers, pressureswitches, transmitters, flowmeters, flowswitches, pitot tubes, anemometers. Scribd is the worlds largest social reading and publishing site. Build an energysaving solution for any budget Simple retrofitinstalls 701 faster than wired systems Minimizes disruption to people in space. Drawing illustrating the conflict between heating and cooling in HVAC systems. Build Yagi Antenna Wifi Antenna. Most HVAC systems airflow cools at a set point. Once the system starts, it will reach the designated temperature sometime thereafter. Temperature settings on a thermostat or control system do not equate to the speed of cooling. MYTH Price should be the deciding factor when purchasing an air conditioner BUSTED There are many factors to consider when you are in the process of purchasing and installing an air conditioner. Western Wood Products Association, representing Western lumber manufacturers. When it comes to cars, trucks, and SUVs, each varies in size, efficiency, comfort and price. On top of that, each car dealer may have their own pricing model that. Be certain to make your selection and choice based upon your specific comfort needs, budget, and anticipated length of time you will be in your current home. Enhanced energy savings can result in real, tangible returns when you invest in a high efficiency system, especially when compared to your old unit or todays base efficiency models. Labor costs can vary depending on the complexity of the installation, the quality of your existing duct work and any regulations that may influence how much a new energy efficient fully installed cooling system will cost. MYTH Turn off your air conditioner when you leave the houseBUSTED It may seem like a money saving option, but turning off your HVAC system when you leave the house may create problems that lead to additional expenses. Your air conditioner plays an important role in humidity management, a key component in minimizing indoor air quality issues. Additionally, if temperatures become extreme during your absence, it may take your system a long time to restore a comfortable temperature upon your return. MYTH The location of a thermostat location isnt important. BUSTED The location of your thermostat can affect your HVAC systems performance and efficiency. A thermostat or control system should be installed on an interior wall of your home. This limits its exposure to direct sunlight, drafts, doorway, skylights and windows. MYTH Closing vents to select rooms in your home will save you money. BUSTED A properly installed HVAC system should be sized and balanced according to the specific amount of air to be circulated in a home. However, when you close vents, you may throw off the balance of the system or change the way air is distributed resulting in temperatures that make the rest of the house uncomfortable. Before closing vents, discuss concerns with your licensed or professional HVAC dealer. Since each HVAC system set up is site specific, a dealer should be able to help you decide whether certain vents can be closed to reduce the amount of space in your home that is being cooled. MYTH Maintenance plans have no effect on an air conditioners efficiency. BUSTED Professional licensed HVAC dealers are equipped to identify airflow problems, system leaks, coil issues or potential concerns. To keep your central cooling system at peak performance, homeowners should schedule routine maintenance for detailed check ups. Air conditioner maintenance may prevent minor issues from turning into expensive major problems over time and possibly extend the life of your HVAC equipment. MYTH The air conditioning unit needs new refrigerant every year. BUSTED Refrigerant charge, which directly affects the performance and efficiency of your air conditioner, should exactly match the manufacturers specification. Refrigerant should not be undercharged nor overcharged. Today, there are two basic types of refrigerant. R 2. 2 is currently being phased out of use. This chlorine containing refrigerant was a very  common refrigerant for many years. R 4. 10. A is the refrigerant that is used in all new air conditioner units. Its chlorine free and supports higher levels of heat transfer that help the energy efficiency level of the unit. You cannot mix one refrigerant into a unit that uses the other refrigerant. Ask your professional licensed HVAC dealer for help regarding the refrigerant in your central air conditioner. MYTH Purchasing an energy efficient air conditioner will not save you in energy costs. BUSTED High SEER Seasonal Energy Efficiency Ratio air conditioners typically cost less to run than their lower SEER counterparts under the same conditions. However, there are multiple variables that play into the energy costs associated with air conditioning use. Correct equipment sizing, sealed ducts, filter cleanliness and your homes energy efficiency contributes to the overall expense of cooling your home. A National Institute of Standards and Technology NIST study says that if your high efficiency equipment is not installed properly, it may not be running as efficient as you think Without proper installation, air conditioning and heating equipment will perform significantly below rated energy efficiency levels, says Piotr Domanski, who leads NIST research on the performance of HVAC and refrigeration equipment. MYTH I dust and vacuum my house, so I dont need to change my air filters. BUSTED According to the Department of Energy,replacing a clogged filter with a clean one can help lower your air conditioners energy consumption by up to 1. Dirty filters block airflow and can reduce a systems efficiency and performance significantly. Depending on the filter purchased,  filters should be replaced every 3. Check your filters instructions for recommended replacement dates. Also, depending on where you live and how often your air conditioner operates can affect how often you should replace your filters. Your HVAC contractor can provide the proper filter replacement schedule for your particular air conditioning unit. ENERGY STAR. Proper Use Guidelines for Programmable Thermostats. March 2. 01. 7. 2 Thermostats. ENERGY STAR. Does it help to close vents in rooms not being used during the day Does it help to close vents in rooms not being used during the day. March 2. 01. 7. 4 Department of Energy. Common Air Conditioner Problems. March 2. 01. 7. 5 Domanski, Piotr A, Hugh I. Henderson and W. Vance Payne. Graphic Driver For Windows Vista. Sensitivity Analysis of Installation Faults on Heat Pump Performance. October 2. Technical. NotesNIST. TN. 1. Energy Saver 1. 01 Home Cooling.