When choosing a portable air conditioner most people falsely assume that "bigger is better". Unfortunately that line of reasoning may cause real trouble. A portable ac unit that is too large may actually waste energy and do a poorer job of controling both the right temperature and humidity. When discussing the proper size air conditioner the primary concern is the number of BTUs (or British Thermal Units) it is rated for. The higher the BTU rating the more cooling capacity the air conditioner has. Portable ac units are typically rated between 5,000 and 12,000 but higher rated portable units are available. In order to get the best value and fit you will need to get a measurement of the square feet for the particular room you are hoping to cool. If you plan on using a portable air conditioner in multiple rooms use the square footage number from the largest of the rooms. Below is a chart with which you can determine the proper number of BTUs your air conditioner needs to be. The information came from EnergyStar a government-backed program intended to help businesses and individuals protect the enviornment through superior energy efficiency.

To figure out which size unit is best for your cooling needs: 1. Determine the square footage of the area to be cooled using the following formulas: Most rooms can be further divided into these basic shapes to determine the square footage. If the shape of your room is other than square or rectangular, ask your sales associate to help you determine the square footage.price of 2 ton ac unit 2. Using the square footage and the chart below, determine the correct cooling capacity. bryant ac parts diagramCooling capacity is measured in British thermal units (BTUs) per hour.combination heat and ac window units 3. Make any adjustments for the following circumstances: Go to product compare bar Danby Portable Air Conditioners

Take the cool air with you with a Danby® portable air conditioners. Use it for your bedroom or for your living room, the portable air conditioner can follow you to keep you cool during the hot summer months. We offer a variety of sizes and capacities to fit any home. They are made to be dependable and come with many standard features. Some of the models include multiple fans, remote controls and elegant designs. They make a great apartment air conditioner, but can cool any room in your home. Whether your room is under 250 square feet or over 450 square feet, Danby® has a portable air conditioner for you!Small ceiling fans for small rooms and large ceiling fans for large rooms, or so they say. While this may sound like an ancient proverb, choosing the right size ceiling fan ensures maximum performance, style, and above all – comfort. The right size ceiling fan will do more than just keep you cool, it can also save you money. Ceiling fans only cost pennies to run compared to air conditioners, allowing you to increase the temperature on your thermostat and save money on your monthly electric bill.

But before you buy a fan, you need to know how to size a ceiling fan for your room. Proper ceiling fan size for your room secures the fan's performance and longevity as well as the comfort and safety of the room occupants. A small ceiling fan in a large room will have to work twice as hard to cool you off, which will result in the motor burning out quickly. A large ceiling fan in a small room will create an uncomfortable amount of airflow. Unless you like replacing your ceiling fan every few months or feeling as if you’re in a tornado, choose a ceiling fan that is proportionate to the room size. To measure a ceiling fan, first determine if you have an odd or even number of blades. If the fan has an odd number of blades, measure from the center of the fan to the end of one of the blades, and multiply this number by two. If the fan has an even number of blades, measure from one end of a blade to the end of the blade on the opposite side. Now that you know how to size a ceiling fan, see our ceiling fan size chart below to learn how big a ceiling fan should be based on room size, and how to choose the right size ceiling fan for your room.

To determine your room size, multiply the length of the room in feet, by the width of the room in feet, the total is the size of your room in square feet. For example, if your room is 8’ by 8’, the square footage is 64 square feet. Hanging your ceiling fan at the appropriate height ensures that friends and family members won’t hit their heads on low hanging ceiling fans. It also guarantees that they'll be able to feel the airflow the fan produces since fans cool people, not rooms. There should be a 7-foot minimum distance between your ceiling fan’s blades and the floor. If you have low ceilings, or if you have regular size ceilings and you just happen to be really tall, install a low profile ceiling fan. This table shows how high your ceiling fan should be based on your ceiling height, and whether or not the ceiling is sloped. High ceilings require downrods. A high ceiling is defined as any ceilings over 9 feet high. More information can be found on our More Helpful Resources

What Length Downrod Do You Need? Vaulted Ceiling Slope Calculator Outdoor Ceiling Fan Buying Guide Rule of Thumb A/C sizing question from Practice Exam I have a question regarding a question on the practice test. On page 11 there is a question that seems to conflict with the information I was looking up. The correct answer is 700 sq ft but some of the research I did supported 500 sq ft per ton. What is the correct answer? Wisconsin requires passing the National Exam and I�m doing everything I can to get ready for it within 2 weeks. A rule of thumb for air conditioning is a ton of air conditioning is needed for:700 square ft A one story house The contractor asks you how many square feet of living space there are in your house. He (or she) then tells you what size unit you need. This is called "sizing by square footage" and is the most commonly used inaccurate method of sizing. A typical value used for air conditioners is one ton (12,000 Btu/hour) per 500 square feet (46 m2).

This does not take into account differences among houses in design, construction, or energy efficiency. Table 1: Capacity rules of thumb for room air conditioners Rules of thumb for estimating air conditioner size vary by manufacturer. This example, from Carrier, includes the following suggestions for adjustments: If a room is heavily shaded, reduce capacity by 10 percent; if the room is very sunny, increase by 10 percent; and if using the unit in a kitchen, increase capacity by 4,000 Btu per hour. 100 to 150 5,000 150 to 250 6,000 250 to 300 7,000 300 to 350 8,000 350 to 400 9,000 400 to 450 10,000 450 to 550 12,000 550 to 700 14,000 700 to 1,000 18,000 Re: Rule of Thumb A/C sizing question from Practice Exam That's the rule-of-thumb we used for the Texas TREC exam. Of course, Texas is a bit warmer than some climates. IRC - M1401.3 Sizing. Heating and cooling equipment shall be sized based on building loads calculated in accordance with ACCA Manual J or other approved heating and cooling calculation methodologies.