A/C Questions

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What do all those air conditioner and heat pump ratings mean?

Efficiency Ratings: SEER (Seasonal Energy Efficiency Ratio) is a system for rating the efficiency of cooling equipment. The higher the SEER rating, the less your unit will cost to operate. HSPF (Heating Seasonal Performance Factor) is a measurement similar to SEER, but it measures the efficiency of the heating portion of a heat pump.

Heat pumps are often misunderstood or not understood at all. Because of this, you may not realize that there may be a better heating and cooling option than a furnace or air conditioner. A heat pump is an efficient method of cooling your home in the summer and warming it in the winter. Although heat pumps are new to many people, they have been around for over three decades. Although its name is a little misleading, a heat pump is an efficient method of heating a home during the cold winter months and also cooling it during the blistering summer months. A heat pump looks like an air conditioner, but that's only the outside appearance. It actually has two functions based on the same principles for both. In warm weather situations, the heat pump works as a normal air conditioner. It extracts heat from inside the home and transfers it to the outdoor air. In colder weather, however, the process reverses, collecting heat from the outdoor air and transferring it inside your home.

Even when the air outside feels extremely cold, the air still contains some heat. The heat pump pulls the heat from this cold outdoor air and sends it inside to warm your home. When there is not enough heat in the outside air to meet the demand of the thermostat setting, an electric heater supplements the outdoor air to warm the home.While many people find the winter operation of a heat pump the most difficult to understand, it is during the heating cycle that the heat pump produces the most savings. Unlike a furnace that turns fossil fuel or electricity into heat, the heat pump collects heat that already exists in the outdoor air by means of its refrigeration cycle. Consequently, a heat pump will produce two to three times more heat than the energy it uses.

In addition, a heat pump can be an effective add-on option to use in conjunction with an existing gas furnace. With a dual-fuel system, the two systems share the heating load but never function at the same time. Each system operates when it is most cost effective. The heat pump will be the primary heating and cooling system. However, when the temperature drops below the heat pump's ability to operate as efficiently as the gas furnace, the gas furnace will take over until the temperature rises enough for the heat pump to operate more efficiently.Let your local sales and service center show you additional benefits of owning a heat pump and see if a dual-fuel system is right for your home.

An air conditioner seems as if it cools your home's air, but in reality an air conditioner makes your home less warm by removing heat from the indoor air and transferring that heat to the outdoor air.Heat is extracted from the home by passing indoor air across a refrigerant coil in the indoor unit. Refrigerant lines then carry the heat to the outdoor unit, where it is released into the outside air. The cooling cycle continues until the indoor temperature reaches the thermostat setting.

There is not a set size that can be recommended. Every home is different, and there are many environmental variables that must be taken into account. New higher efficiency A/C systems need proper airflow to meet their designed efficiency levels. A load calculation must be performed on the home to determine the proper system size that meets all the physical requirements. Ultimately the size determination should be made by a qualified air conditioning specialist.

More than likely the air conditioner is undersized and/or working harder to keep to the desired indoor design temperature. An air conditioner works properly and efficiently at the temperature it was designed to achieve during installation. If there are hotter than normal days, the A/C will try to maintain the indoor design temperature. This does not necessarily mean there is an undersized unit. It means that the particular hot day is outside the normal range of the calculated design for the A/C unit. A proper load calculation from an air conditioning contractor can determine if the air conditioner is properly sized for the geographic location.

Normal temperatures in the summer can fluctuate depending on the region. If the thermostat is set at the desired temperature during the day, consider a 10 degree lower temperature at night. Most automatic thermostats have intelligent recovery which enables the thermostat to lower the temperature gradually, so the night time savings is not lost by manually bringing down the temperature all at once. These programmable thermostats also help to optimize energy savings without sacrificing comfort.

Icing on the condenser coil on the indoor portion of your air conditioner, or ice on the refrigerant lines outside can be caused by several conditions. The most common culprit is reduced or restricted airflow from a dirty air filter or restricted air ducts. In some instances, a refrigerant (commonly called Freon) leak can cause a condition where ice accumulates on the indoor coil. This condition may damage your system so it should be fixed.

Home Comfort Systems

How Home Comfort Systems Work?

You deserve to be comfortable, home comfort really starts with a matched system.

A matched system is made up of components that are designed to work together to provide greater efficiency, reliability and comfort.

How your home's air gets cleaned, heated and cooled?

Your home's air is pulled through a return duct into the furnace. If an air filtration system is present, the air first passes through the filter and is cleansed. When heating, the air is then circulated through the heat exchanger where it is heated to the temperature set by the thermostat. A blower then pushes the air into the duct system, where it blows out of the vents and circulates throughout the home.

When cooling, the air pulled into the system from the return grill is cooled by the air handling unit, usually located inside the home. This equipment uses refrigerant to remove the heat from the air. The blower then pushes the cooled air into the duct system and out to the rooms of the home.

When airflow is restricted or released inappropriately through duct leaks, it can cause hot and cold spots, noise, and even vibration. Duct leaks also contribute significantly to the length of time it takes to heat and cool the home. More importantly, it's wasted utility dollars because of inefficient energy usage.

A common problem that contributes to bad air is dirty ducts. The ducts in any home, even new homes, can contain contaminants, dirt and debris that blows into the air in your home every day. A simple duct cleaning could significantly reduce some health problems associated with these contaminants.

Like water pressure, air pressure can either be positive (air fills the room and cannot escape quickly, causing high pressure) or negative (air escapes the room too quickly, creating a vacuum effect). Positive and negative air pressure is identifiable by slamming doors, wind-like noise, hot or cold rooms, and even popping eardrums when the home comfort system is in operation.