1. How many rooms do you want to cool?Annual Energy Savings Calculator Department of Energy calculators will help you determine the efficiency of your current cooling or heating system as compared to a newer, more efficient system. You may need to refer to the instruction manual that came with your system to identify tonnage, SEER , AFUE and MBTUH output. Your local contractor may also be able to help you locate this information. Click here for calculators. Newer units, especially those with ENERGY STAR® labels, operate more efficiently, reduce your energy bill, increase your comfort and even help protect our environment. You may not realize the amount of money you waste with a unit that is less efficient by today’s standards, even if your heating or cooling system is properly maintained. A service check may actually detect a problem before you notice it, and catching it in time may extend your unit’s life. Although it’s important to keep in mind that a temporary repair may end up costing you more in the long run.

Ask yourself the following questions:ice in window air conditioner How old is the equipment?mini air conditioner unit uk Has it been serviced on a regular basis?hvac combined unit Is it energy efficient? Does it use today’s new efficiencies or was it efficient ten or twenty years ago? You should also be aware that there are standard efficiency ratings that make it easy to compare the performance of different systems: Air conditioners use SEER (Seasonal Energy Efficiency Ratio). Furnaces use AFUE (Annual Fuel Utilization Efficiency). Heat pump units are also rated by SEER for cooling efficiency and HSPF or Heating Seasonal Performance Factor for heating.You are hereHome » Engineering Tools » Calculators » Airflow Unit Conversion

ExampleSelect the appropriate DC fan to supply 400 LFM (2 m/s) airflow into a 4 inch (102 mm) diameter circular duct with a pressure drop of 0.1 inches of water (25 Pa). Using the airflow calculator above, type the airflow value of 400 and select LFM as the units. Next type the circular duct dimensions of r = 2 in. After pressing the Calculate Airflow button, read the CFM requirement of 34.91 CFM in the volume airflow units column. This value coupled with the pressure drop of 0.1 inches of water (25 Pa) now allows the use of standard fan curves. For example, click the following link to select a 12 volt DC fan, which meets the requirement: 12 DC Fan. Notice that the free air delivery of fans is the airflow delivered with no resistance. The fourth fan listed, Flight II 120 - FT12B3, would deliver 37.8 CFM into the duct and 90 CFM if no resistance was presented.You are hereHome » ResearchAir ConditionerCooling Load Calculator air conditioners provide a practical, cost-effective method of

They install quickly into factory prepared openings and move with the building when your needs change. through-the-wall units can be used to cool larger buildings and offerIf one of the A/C units fails, still provides some cooling until the problem is resolved. using the A/C calculator on the map to the right and select the corresponding button to the right. the nominal length and width of your A-WALL building in the Enter the number of people who will occupy your Enter the amount of additional heat load that generate inside of your A-WALL building, stated in BTU/hr. Computers typical office equipment do not need to be considered unless to the size of the building. If you do not know the BTU/hr rating of equipment, you can convert other, known ratings to BTU/hr (see equations). your data by selecting "CALCULATE" to display the A/C For best results, a room air conditioning unit or units with the cooling capacity rating close to that

shown above should be selected. A smaller capacity unit operating continuously will contribute more to comfort than a larger unit operating Additional heat load from equipment: BTU/hr * Please note that there are many factors besides those stated above that can effect the operation of your air conditioning system. Some of these factors include cooling recovery in high traffic rooms, the location of your A-WALL building relative to heat generating processes such as furnaces, the addition of room exhaust fans andThe cooling capacity suggested by this calculator does not consider these and other factors that may be specific to your project. assistance with unusual cooling requirements, please A-WALL Modular Construction is 100% Reuseable! Compare A-WALL Building Systems to Alternative Construction Methods. A-WALL Panels 200 Single Story Modular Offices 300 Single Story Modular Offices Two Story Modular Offices Space Planning and Common Sizes

Two Way Length and Temperature Converter Tax Depreciation Comparison CalculatorContact a Cloud Specialist Today! POWER & COOLING UNIT CONVERSION Do you know if your existing HVAC system can keep up with your growth or how many watts your power configuration can deliver? Use this calculator to determine your cooling needs and available power delivery from your existing or future You are hereSBA.gov » Starting & Managing » Managing a Business » Running a Business » Energy Efficiency » Calculate Energy Savings » Energy Saving Calculators from ENERGY STAR Energy Saving Calculators from ENERGY STARGo to the Cooling Calculator Click on the region of the continental US that is closest to your home.  This will select a cooling hours figure for the calculatorYou can also enter the cooling hours manually if you have better information (see note A, below.)  Click on the "Accept" button to proceed.   taken to the system input page

Using the drop down menus, select a cooling unit To compare two air conditioners, select the air conditioner type for each system.  The calculator will assign values for the EER/SEER (see note B, below) and distribution efficiency fields.  Make changes to these values if you have better information (see note C, below.) To compare an air conditioner with an evaporative cooler, select the air conditioner in System 1, then click on the "CompareInput the size of the cooler, expressed either in HP (motor horsepower) or watts.  If you want to switch back to comparing two air conditioners, click on the "Compare Standard AC" button. of the air conditioning units to be compared, and select whether this number is in BTUs or tons (BTU - British Thermal Unit, a measurement of energy; one BTU is approximately the amount of heat released by burning a wooden kitchen match.)  One ton is equivalent to 12,000 BTUs per hour.  Room air conditioners commonly use BTUs;

systems commonly use tons. Input your electricity cost.   (or current utility bill) is the best source for this information. When you have made your selections, and made any appropriate changes to the default values, hit the "See Results"From there, the calculator will display a results page, which compares the operating costs between the two systems, and tells you how much you will (or won't) save by using one system over another.  From the results page, you can make changes to the two systems, and re-submit the information for new results. Note that the cooling hours data selected from the map are only regional estimates that do not take into account the other factors that affect the cost of operating a cooling appliance.  Size of home, thermostat set point, and individual comfort are only some of the factors that go into the operational characteristics of (and therefore cost of) cooling a home.  However, if you wish,

you can adjust the cooling hours up or down to reflect your current situation. EXAMPLE: you're using the calculator to compare your home's current system (system 1) to a new system (system 2.) After you submit your information, you find that the operating costs for system 1 doesn't reflect the cost of cooling your home.  First, make sure that the system size, efficiency, and distribution efficiency values are correct (to the best of your knowledge.) If your cooling costs are still not reflected by the results, you can you increase or decrease the cooling hours number until the system 1 operating costs match your actual (or expected) costs. Used to compare the efficiency of room air conditioners.  A measure of the number of BTUs per hour of cooling provided for each watt of electricity used. efficiency of central air conditioning systems.  Measures ratio of the total amount of cooling provided in a typical cooling climate for an entire year to the energy

consumed in the same period. For air conditioners, the calculator will assign values to the EER/SEER and distribution efficiency fields.  Please note that these are default values only, based on an average.  Actual values may varyFor best results, obtain EER/SEER values from theThe values for your distribution system efficiency are best obtained through performance testing or calculation. Note that the calculator does not take into account the efficiency of the fuel transmission from the source to your home, only the efficiency of the system within your home. The calculator is compatible with the Netscape Navigator, Microsoft Internet Explorer, and Opera browsers.  The calculator is optimized for use with versions 4.0 and above for all browsers.  Those with earlier versions of the browsers can still use the calculator, but it may not perform to its fullTo update to the current version of Netscape Navigator, update to the current version of Microsoft Internet Explorer,