AC Unit Lewisville, Texas

How Do I Know If My A/C Unit Is Big Enough?

 

Choosing the right sized air conditioner is crucial to achieving optimal temperatures, humidity levels and energy consumption. It is less expensive to purchase one unit that provides the right amount of cooling rather than multiple smaller units or one excessively large air conditioner. Fortunately, most people find it fairly easy to perform the necessary measurements and determine the appropriate size.

Steps To Choose The Right Size AC:

1. If you plan to cool a single room or part of a building, measure the desired area’s width and length with a measuring tape. Some rooms have complex shapes; you may need to split the area into multiple segments and measure them separately.

2. After writing down the measurements, use a calculator to discover how many square feet you need to cool. You will only have to multiply the width of the desired area by its length. Special formulas are necessary to determine the square footage of curved or triangular segments.

3. If you decide to install central A/C equipment, find the square footage of the entire building. This may prove difficult; try to find out if someone has already calculated it. Some homeowners obtain this information from county auditors, old real estate listings or documents about property taxes. Remember not to count the attic, basement or closets.

4. Use these guidelines to find the appropriate BTU/hour rating. You need approximately 6,000 BTUs to cool an area under 300 square feet, 10,000 BTUs for 301 to 549 sqft., 16,000 BTUs for 550 to 999 sqft., 22,000 BTUs for 1,000 to 1,199 sqft., 30,000 BTUs for 1,500 to 1,999 sqft. and 34,000 BTUs for 2000 to 2,499 square feet.

5. If necessary, adjust the BTU rating. Increase it by 4,000 if you need to cool a kitchen. Multiply the number by 1.1 if there is usually full sunlight or 0.9 if a building always stays in the shade. When there are normally three or more people in a room, compensate for body heat by adding 600 BTUs for every extra person.

The final step is to purchase a central or room air conditioner with the right BTU output rating.

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Relaxing at Home Lewisville, Texas

How Humidity Affects Air Conditioning And Heating

Indoor humidity levels have a major impact on the performance and efficiency of HVAC systems. If the humidity level is more or less than the optimum, it is much more difficult for your home’s heating and cooling system to get the job done.

The air conditioner simultaneously removes moisture and heat from the air. A unit that is too small for the space will have trouble generating enough cooling capacity if the humidity is too high. This means the unit runs continuously and costs more to operate without ever being able to achieve a comfortable room temperature. The room feels hotter because of the high humidity.

This does not necessarily mean bigger is better. If the air conditioning unit has more capacity than it needs to cool a space, it does not run long enough to have a chance to remove the moisture from the air and the indoor humidity level rises.

Humidity has the opposite effect on your home’s heating system. During the winter, humidity levels drop and if they drop far enough, the room temperature feels colder than it actually is. The heat pump or furnace will work overtime to try to compensate, but the house will never feel warm. The ideal setting for your home thermostat is anywhere from 71 to 77 degrees during the winter as long as the humidity level remains at a minimum of 50 percent.

Foggy windows, a musty odor and moist clammy air inside the house are sure signs of high humidity. The most effective way to keep humidity at the optimal level is to install a dehumidifier. This appliance wrings moisture from the air before delivering it through the ductwork to the rest of the home.

Controlling the humidity levels in your home is an effective way to save money on climate control year round. With the proper humidity levels, your HVAC system will run more efficiently saving you money on operating costs. Because the system can run at peak performance, it will not have to work as hard, which prolongs the life of the equipment and saves on unnecessary repairs and replacement.

Contact us today for more information on how humidity affects air conditioning and heating system functionality.

Advent Indoor Air Quality Myths

Debunking Indoor Air Quality Myths

 

There are myths about indoor air quality (IAQ) that circulate within the general public, and some of these myths prevent people from taking adequate precaution to ensure their IAQ is above par. Luckily, some of the myths are facts. Debunking most of these myths enlightens you on what is and what is not true, thereby giving you an edge in the maintenance of your building’s IAQ.

 

Typical IAQ myths

Indoor Vs Outdoor air quality

Perhaps the most dangerous IAQ myth is that indoor air is purer than outdoor air. This is not only false, but it also perpetuates some people’s culture of ignoring their indoor air quality. While the outdoor air may be prone to synthetic and natural contaminants, the free flow of fresh air continually dilutes the air, reducing the concentration of pollutants in a given area. Indoor air, on the other hand, is plagued with pollutants from human and animal activities and the limited flow of fresh air (due to enclosed spaces) can increase the concentration of these pollutants to dangerous levels.

Gas detectors

There are numerous brands of gas detectors that can be installed in premises to detect and alarm building occupants of gas leaks. Whereas it is true that gas detectors are effective, it is not true that some gas detectors are effective forever without maintenance. All gas detectors must be checked and or serviced according to the manufacturer’s instructions. Whereas some people assume that all gas detectors are the same and should be installed as per the volume of an indoor space, it is important to note that not all gas sensors are the same. Each gas detector should be chosen according to the gas-to-be detected and not the space capacity.

IAQ maintenance

Some people assume it is impossible to maintain high indoor air quality. The truth of the matter is that there are numerous HVAC equipment that can condition, detect impurities, and clean indoor air. The acquisition, installment, operation and maintenance of the necessary HVAC equipment may be costly, but the achieved IAQ translates to comfort and good health for your indoor occupants.

Indoor air quality is essential for the comfort and the health of building occupants. Numerous IAQ myths make it impossible for people to make any efforts to maintain their indoor air quality at optimum levels. Follow our blog for more information on heating, cooling, and keeping your home energy efficient.

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Tips For Right-Sizing Your Commercial HVAC System

Right-Sizing Your Commercial HVAC Systems will not only help you meet the performance expectation of today’s more efficient homes, but will also increase the comfort and efficiency expectations of the your house or room’s occupants. Here is an overview of the tips that you can utilize to right-size your commercial HVAC systems right from the design of your project through installation and testing stage.

Include Precise Insulation and Sealing Specifications

Specify the right level of insulation that you need as well as the depth that you anticipate to blow in an attic. Use blow-in insulations for optimum wall insulations—a minimum of R-22 in the walls and R-50 in attics is recommended. You can also use air-sealing systems in spraying thin layer of foam to seal the gaps between framing and sheathing (especially in stud and joist bays) before installing cavity insulations. Again, you can use advanced framing techniques that reduces thermal bridging and increase insulated surface areas.

Correct window U-value and SHGC

U- Value and Solar Heat gain coefficient (SHGC) of .30 is usually recommended. Default window U-value or SHGC data will increase the sizing of your AC, which can in turn impact negatively its performance considering that 30-40 percent of the cooling load will be attributed to the solar gains via the windows. Placement details such as shading, overhang, and orientations can significantly impact this information.

Have Duct Work and Distribution System in Mind

When designing your projects, have HVAC and duct work system in mind—right from the beginning of the project. High efficiency HVAC systems should be located within well conditioned envelope of your home, accommodated by right framing systems such as pre-cut I-joists that are engineered for duct opening cuts. Attic should also have more insulation.

Seal All Ducts and Air-Handling Equipment

Leaking ducts can result into energy losses and poor indoor air quality. Accordingly, ensure that all ducts and air handlers are sealed tightly using mastic at all joints, connections, elbows, and terminations. Ensure that the tested duct values do not exceed 3 percent of the gross air flow on your system.

Test Your System for Performance

Like duct tests, you need to carry a system performance check for delivered air flow, room to room pressure, duct tightness, and A/C system charge to ensure that they meet your specifications.

Right sizing will help design, specify, and install your HVAC system to match specified efficiency design features and performance goals. Follow our blog for more information on heating, cooling, and keeping your home energy efficient.