What size air conditioner do I need for a 12 x 15 room? An air conditioner suitable for a 12 by 15 room has a minimum cooling capacity of 4500 BTU. Estimate this by multiplying the area of the room by a constant: 25 BTU. Therefore, 12 x 15 = 180 square feet. When 180 is multiplied by 25, the result is 4500. How do you know what size air conditioning unit to buy? How many BTUs do you need to cool a room of 435 square feet? What is a 4,000 BTU air conditioner? If a smaller air conditioning unit is used, it is going to run often and use a great deal of electricity. Even so, it is not likely to cool the room sufficiently. However, if an air conditioner is too large, it only does half of its job. As the appliance makes a room cooler, it also removes moisture from the air. A large air conditioner in a small room does not need to run very long, so too much moisture remains. This makes the cooler air feel humid or clammy. Learn more about Heating & Cooling What is a 10,000 BTU air conditioner?

A 10,000 BTU air conditioner has 10,000 British Thermal Units of cooling capacity, or energy production required to remove heat from a room. This is a medi... How do you choose the right size air conditioner? An air conditioner's capacity must be sized to fit the square footage of the room. If the air conditioner is too large, it turns off and on too quickly and... How can I determine the size of air conditioner I need? To figure out the size of air conditioner that is needed for a space, the square footage needs to be established so that the cooling capacity can be determ... Why is BTU important when purchasing an air conditioning unit? The British thermal unit rating is a measurement of how much heat an air conditioner can remove from a room and is important in determining what size unit ... Are ductless heat pumps worth the price? How do you install a baseboard heater? Where can you find air conditioner specifications online? What is the average testicle size?

Are there any problems reported with a Ridge vent? How do you install a Coleman furnace?You are here » Room Air ConditionersWhat size house will a 3.5-ton air-conditioning unit cool? A 3.5-ton air-conditioning unit cools homes from 1,801 to 2,300 square feet, depending on location. ac units for sale ukThe unit cools 1,801 to 2,100 square feet in southern states from Georgia to California, and it covers 2,101 to 2,300 square feet in northern states. car air conditioner repair specialistFor existing systems, model numbers reveal the unit capacity.top 10 hvac companies in usa What is a ductless air-conditioning system? What is a 10000 BTU air conditioner? What is retrofit air conditioning? Manufacturers use a code in the model number of outdoor units instead of listing unit capacity on the air conditioner.

If the model number is CKL42-1, for example, the unit is 3.5 tons. The number 42 means the unit is 42,000 British thermal units; when divided by 12,000 Btu per ton, the result is 3.5 tons. Alternatively, residential load calculations can scientifically determine the proper size air-conditioning unit. How do you read an HVAC thermostat wiring diagram? The most common programmable HVAC wiring systems in homes contains a furnace and an air conditioning unit. In this case, the thermostat wires are color-cod... How much space can a 2-ton air conditioning unit cool? A 2-ton air conditioning unit is capable of cooling between 800 and 2,000 square feet of interior space. A building's energy efficiency, including air leak... What is the cost to install an air conditioning unit in a 1,600- square-foot house? As of 2014, the cost of installing an air conditioning unit in a 1,600-square-foot house falls between $3,000 and $5,000. If the duct work of the central a...

How do you put Freon into an air conditioner? To put Freon in an air conditioner you will need a Freon kit with compatible refrigerant, gloves, goggles, a mask and access to your air-conditioning unit.... Where can you buy a replacement air conditioner fan? What is a gas ceiling heater ? What are some good plans for a backyard guest house? Are there Trane installation manuals available online? Where can you buy Whirlpool Gold dehumidifiers? What is the average size of a billiard table?Learning Center » A/C & Heating » Window Air Conditioners » How to Select the Right Room Air Conditioner for Your SpaceHow to Select the Right Room Air Conditioner for Your SpaceSizing your central air conditioning unit can be one of the most frustrating parts of the process of installing a new air conditioner. Customers that solicit price quotes from multiple companies are routinely given different sizing recommendations and different reasonings for those sizes. So how are you supposed to know what size air conditioner you actually need?

I’ll give you some simplified guidelines for how central air conditioning units are sized here in Denver, but... The bottom line is that it’s not your responsibility to try and figure out what size your central air conditioner should be. Find a company you can trust, make sure they offer 100% money-back satisfaction guarantee in writing, and let them take responsibility for sizing the unit properly! The company you choose to install your new ac unit will use a long-form calculation called a Manual J Load Calc to determine the optimal size of your new unit. But it’s understandable to want a general idea of the approximate size your central air conditioner should be without going to an engineering class, and that’s actually a pretty simple equation. Here in Denver, you can get a rough approximation of how many tons your central air conditioner should be by dividing the square footage of your home by 600. It’s important that you not include any square footage in the basement in this calculation, regardless of whether your basement is finished or not.

Dividing your home’s square footage by 600 does not work for homeowners outside the metro Denver area. The 600 figure is higher than the figure that would be used in other parts of the country because it has been adjusted upwards to account for Denver’s higher altitude. Approximate Sizing Equation For Central Air Conditioners In Denver Example: 1,500 s.f. / 600 = 2.5 ton ac unit 1,800 s.f / 600 = 3 ton ac unit 2,100 s.f. / 600 = 3.5 ton ac unit 2,400 s.f. / 600 = 4.0 ton ac unit Over 2,4000 s.f. / 600 = 5.0 ton ac unit Newer, more energy efficient homes can sometimes require slightly smaller units than the approximate sizing equation would suggest, but that depends on a number of factors related to the construction and style of home. Please keep in mind, this gives you a general approximation on sizing for your air conditioner. Your heating and air company should attempt to fine-tune the size by performing a Manual J Load Calc. The load calculation may confirm that your home needs the same size as the Approximate Sizing equation produced, or it could indicate that you need a slightly smaller size.

If you are given a quote that recommends installing an ac unit that is more than 1/2 ton smaller than what the approximate sizing equation suggests, and that quote does not include a 100% money-back satisfaction guarantee, you are taking a huge risk. It’s pretty rare that a load calculation will suggest installing a unit that is more than 1/2 ton smaller than the size you’ll get from the approximate sizing equation, but if it happens, you’ll want the contractor to make sure you have sufficient return air to handle the extra cooling capacity. To be honest, allowing any company that doesn’t offer a 100% money-back satisfaction guarantee in writing to install your new air conditioner is like rolling the dice. You have to cross your fingers and hope that they will install the correct size ac unit, as well as doing a good job on the installation itself. Without that 100% money-back guarantee you are basically on your own if there’s a problem. If you haven’t read it yet, check out our blog post titled How Does Size Affect The Cost Of A Central Air Conditioning Unit?