Properly designed air conditioning systems are extremely important, especially in the south where we are dealing with constant high temperatures and high humidity. The sizing (tonnage) of the a/c units is critical. If there is too much tonnage, the space gets cooled down too quickly and does not allow the humidity to be drawn from the air. Likewise, if the units are undersized, the units will constantly be running (not being energy efficient) in an attempt to cool the space. The old rule of thumb for estimating the size of the air conditioning systems for a home was one ton for every 500 square feet. This rule should not be used as it does not take into account many factors. There is specific information that should be gathered in order to determine the correct sizing for a particular space. Several of the factors are: room orientation to the sun, the type of insulation in the home, the volume of space in the room, size of the ducts and how the air is returning to the air conditioning units. The size of the unit always should be determined by a qualified a/c contractor or a mechanical engineer.
The efficiency rating (SEER) of the a/c units determines how well the units perform in regards to energy use. The higher the SEER, the more efficient the unit and thus, the less expensive the units are to operate on a monthly basis. As a rule, the higher efficiency a/c units also offer more features, better warranties, quieter operations and different designs. We have found that it is difficult to justify the increase in price for units having an SEER higher than 16.0. As electric pricing continues to escalate and the demand for higher efficiency unit increases, this will change.
For us, the short answer is that all our clients really want to know is that the a/c units will cool the space properly. We use Carrier, Rheem and Lennox products in all our homes. The a/c units that we choose are a function of the air conditioning sub contractor and their buying relationship with their preferred manufacturer. In saying this, we are generally very satisfied with all the equipment we purchase. Beware of ?builder models,? as these generally are of lesser quality with less comprehensive and shorter warranty packages.
All manufactures of a/c equipment have different models within a particular line that may have similar sizing (tonnage) but have significant other benefits. A builder can achieve a desired efficiency rating (SEER) on an a/c system by using different combinations of units within a manufactures line. However, the efficiency should not be the only criteria.
Air Conditioning For Homes
The gas furnace is affordable to employ, as the gas is readily accessible. The electric furnace as compared to the gas furnace has a higher cost.
As the winters approach, many of us start considering about fireplaces and furnaces in order to keep our house warm during winters. Whether you thinking to purchase a new furnace or set up new fireplace, there is huge collection of furnaces and fireplaces obtainable from the market. Thus, selecting one can be a bit tough.
Nevertheless, following are the various features that you must look while buying a furnace.
1. Decide what kind of furnace you want
Deciding what type of furnace you want is very important. There are two kinds of furnace available in the market.
?The Gas Furnace: This furnace is very affordable to employ, as the gas is readily accessible. In this kind of well-maintained furnace, the smoke produced is enclosed within the exchanger that goes out via exhaust vent. Always remember that a gas furnace should be verified by an expert professional one time in a year minimum. The expert would verify the gas heating system for leaks, holes, or cracks.
?The Electric Furnace: The electric furnace as compared to the gas furnace has a higher cost. Since the electric furnaces not use the flames, thus it does not produce carbon monoxide. In addition, the electric furnace is safer and cleaner than the gas furnace.
2. The superiority of Furnace
The superiority of the furnace distinguishes that how well and how long the furnace will perform. Selecting the right kind of furnace, which has an account of reliability and quality, could be less expensive for the long run. Inquire your contractor regarding, which company will suit the best according to your requirements.
3. The effectiveness of the Furnace
The effectiveness of the gas furnace is determined through its Annual Fuel Utilization Efficiency or AFUE ratings. This ranking makes out how proficiently the gas is being consumed. The gas furnaces with escalated ratings values more than those of lower ratings.
?The Mid-Effective Furnaces: The mid-effective furnaces are also known as non-condensing furnaces or the induces draft furnaces.
?The High-Effective Furnaces: The high-effective furnaces are called as the sealed combustion furnaces or condensing furnaces. Few furnaces use the two-stage control device and a proficient variable-speed glide in order to mount effectiveness as well as comfort.
4. The comfort attributes of furnaces
Numerous furnaces offer attributes, which mount efficiency and comfort.
?The attributes of a two-speed furnace: The furnace could work at low speed for majority of the time. It enables for a much quieter process for longer period as compared to the single-speed furnaces. The two-speed unit provides improved circulation that averts heated air from mounting and the cooler wind to settle down. It gives much reliable temperature in house.
?The attributes of a variable-capacity furnace: Furnaces, which have variable capacity, offer a mixture of comfort and efficiency. The variable-capacity includes a motor, which regulates your requirements by mechanically adjusting air speed and volume. The variable-capacity furnace offers the most effectual cooling and heating.
5. The noise level of furnace
Regrettably, not all the furnaces come with a normal rating structure for sound unlike the air conditioners and heat pumps. Though the variable capacity and the two-speed units usually function at a low level of noise, the warmth degree of difference is condensed so that the squeaking noise is eliminated.
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