![]() Too small, so it won’t adequately cool your home on the hottest days – or you might find there are rooms on upper levels or far from the indoor system that are noticeably warmer on hot days.They don’t remove as much humidity as a properly sized AC-think “cool and clammy.” That’s not very comfortable! Short cycles also produce a higher risk of mechanical failure. Too large will run short cycles since it has more power than you need – cooling beyond the thermostat set point and creating temperature imbalances.We won’t belabor the point, other than to say that a central air conditioning system must be the right size to give you the efficiency and indoor comfort you expect. The risk of hiring an unqualified, cheap installer is that they will install an AC size that might or might not fit. Our AC size calculator will help you get it right.Īlso, if you hire a local certified AC contractor using our Free Local Quotes service, you won’t get it wrong. Here is an approximate guide for an average home in a moderate climate. Our AC size calculator will help you get it right. The Importance of Proper Sizing a Central AC Secondly, how much shade is around your home, especially on the south and west sides, which are usually hot in the summer afternoon? Use these factors to decide how much Sun Exposure your home gets. How sunny is your climate? Do you know how many days of sun you get per year? The Mean Annual Sunshine map gives you a good idea. Sun Exposure: There are two aspects to this. If your home is older and/or you feel drafty areas around doors and window, choose Poor. Insulation: If you know that your attic insulation is as thick as it should be and your home has house wrap (Tyvek, for example), and you have newer doors and windows, choose Good. Double the square footage for two-story sections, of course.ģ. If you end up having to measure your home, measure each rectangle separately and add them up. If you don’t know its size, the information might be found in your closing documents or a blueprint or other drawing of your home. Home Size: Enter your home’s square footage. It is better to have a central AC that is slightly too large than one that is slightly too small.Ģ. The exact thermal load can be determined by using a full heat load analysis.Pro Tip: If you’re on a Zone boundary, choose the warmer climate. Square foot methods are considered rule of thumb for use in quick calculations. Note: This tool is provided strictly as a quick method of computing general size and value conditions. Since most air conditioning units are provided in increments of ½ a ton (6,000 BTU/hour) sizes, this system should be quite close to the actual units that will be used. The tool has various factors pre-set with the most commonly used values but may be changed at will by clicking the “Additional Factors” button to expose these additional fields. Select your region and input the height of the zone as well as the area (length times width). The system is pre-set to a 72-degree indoor temperature and a 95-degree outdoor temperature. This tool is based on the square foot method, with computations added for the most important values included, such as insulation, windows, and other contributing factors. An easy-to-use HVAC tool for calculating necessary thermal output capacity (in BTUs)
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |