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Indoor Air Quality

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The Residential HVAC Experts

Upgrade your residential HVAC system by calling Indoor Air Quality. We offer HVAC repair, maintenance, and installation services throughout Mid-Mississippi. While our focus is on heating and air-conditioning equipment, we also take a step back and look at the whole house as a system. This method enables us to improve comfort and indoor air quality while reducing your monthly utility bill. We also ensure that new, high-efficiency equipment performs as close as possible to its laboratory rating.

Air Conditioning

A traditional home comfort system has two parts: an indoor unit, such as a furnace or air handler, and an outdoor unit. An air conditioner is the outdoor unit that cools air and sends it to the indoor unit for circulation through your home. Indoor and outdoor units are designed to work together. When the air conditioner is properly matched with the correct furnace or air handler, you get maximum efficiency and longer system life.


Furnaces heat and circulate warm air in the winter. Furnace heating ability is measured with an annual fuel utilization efficiency (AFUE) percentage. A higher AFUE percentage indicates a more efficient furnace.

High-Efficiency Heat Pumps

A split-system heat pump keeps homes comfortable all year long. In summer, it draws heat out of your home to cool it. In the winter, it draws heat from outside air into your home to warm it.

T3485 Outside Unit

Trane x1824

Heating & Cooling Systems

In a packaged system, all equipment is built into an outdoor unit, usually on a concrete slab or other platform. The "package" that gives it its name provides central air conditioning during the summer and heat in colder months.


Thermostats are extremely important because they are the interface and control system for your heating and air conditioning equipment. This is the device that will give you the information on what the equipment is doing, when it needs to be serviced, and allows you to set the exact temperature and humidity you want to maintain in your home.


Zoning allows you to have different temperatures in each room or area of your house. You can have one temperature in the kitchen, another temperature in the family room, and yet another temperature in your bedroom. Not only does this provide much more comfort, but it can save you up to 20% per year in your annual operating costs because you don't overheat or overcool the areas that are unoccupied.

UV Air Purifiers

Ultraviolet air treatment systems kill mold that would grow in the cool, damp interiors of your air conditioning system. This is the same technology that's long been used by water treatment facilities, adapted for safe, efficient home air purifiers.

Air Handlers

The air handler is the indoor unit of a traditional home comfort system. It circulates cool air through your home in the summer and warm air in the winter. The air handler supplies conditioned air evenly throughout your home when used in place of a furnace with either an air conditioning or heat pump system.


Dehumidification can be very important if you live in areas of high humidity. High humidity in cooler temperatures gives you a wet, clammy feeling. In warmer temperatures, it causes a wet, sticky feeling and causes perspiration to stay on your body and soak into your clothes rather than evaporate.

High humidity can also cause mold and mildew throughout the house and even ruin very expensive clothes, fabrics, paintings, and wall coverings. All air-conditioning units take out some humidity when they are running, but for very humid areas, you need a dehumidifying system. This can take out up to 15 times more water from the air than a standard system with very little operating cost penalty.

Air Cleaners

Be sure your home's air is clear of dust, pollen, fungi, smoke, and other particles too small to see. It's easy with a HEPA, electronic, or media air cleaner. These cleaners provide stepped-up filtration, more effective than your furnace or air conditioner alone. In fact, these cleaners can remove up to 94% of the particles that pass through your home's system. And since these pollutants can build up as film on walls and furniture, this is performance you'll feel and see.

Evaporator Coils

The evaporator coil is a series of piping connected to a furnace or air handler that blows indoor air across it, causing the coil to absorb heat from the air. The cooled air is then delivered to the house through ducting. The refrigerant then flows back to the compressor where the cycle starts over again.


Use an energy recovery ventilator for warm climates or a heat recovery ventilator for cooler regions. These air exchangers quietly bring in fresh, clean air from the outside and remove stale inside air, along with dust and other particle buildup.