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Frequently Asked Questions
.: Frequently Asked Questions

Getting Started
  1. How Does Central Air Conditioning Work?
  2. How Do Heat Pumps Work?
  3. How Do Gas Furnaces Work?
  4. How Do Package Units Work?

How Does Central Air Condition Work?

Technology:

  • Standard residential central air conditioners are split systems, with a condenser coil, cooling fan and compressor housed in an outdoor condensing unit. The evaporator coil is enclosed in an indoor airhandler unit, usually installed on top of a furnace within the home. Also combined with a blower when used with an electric furnace.


  • Using electricity as its power source, the compressor pumps refrigerant through the system to collect indoor heat (sensible and latent) and removes it from the home. This heat is dissipated outdoors through the condensing unit's coil.


  • Heat and moisture are removed from the home when warm air from the living space is blown over the cold indoor coil. Heat in this air transfers to the coil, thereby "cooling" the air. Water vapor from the living space air condenses on the cold indoor coil, collects in the drain pan and is carried outside via the condensate drain.


  • Heat that has transferred to the evaporator coil is "pumped" to the exterior, while the cooled indoor air is circulated by the airhandler's fan, to maintain comfortable indoor temperatures.


  • Central air conditioning can also be provided through a heat pump which operates on the same principle or by a package unit which combines both "split" components into a single outdoor unit.
Benefits:
  • Maintains comfort during hot weather - Central air conditioning's primary goal is to maintain a comfortable indoor ambient temperature while at the same time reducing excessive humidity levels.


  • Cleans & sanitizes indoor air - As a central air conditioning system draws air out of various rooms in the house through return air ducts; the air is pulled through an air filter, which removes airborne particles such as dust, lint, pollen and other allergens. Sophisticated media and electronic filters may remove microscopic pollutants such as bacteria, virus, and tobacco smoke as well. The filtered air is then routed to air supply ductwork that carries it back to rooms in your living space. 


  • Quiet operation - Because the condenser fan and compressor unit is located outside the home, the indoor noise level from its operation is much lower than that of through-the-wall or window air conditioning units.


  • Aesthetics - Central air conditioning has virtually a zero living space requirement leaving your windows completely unobstructed.


  • Safety - Central air conditioning units are installed by certified professionals who understand the technical challenges of high voltage wiring, high pressure refrigerant lines, and routing critical condensate lines. Therefore you can rest assured that your comfort system investment is secure and your family and home are safe from harms way.

How Do Heat Pumps Work?

Technology:

  • Residential heat pumps are split systems, with a condenser coil, cooling fan and compressor housed in an outdoor condensing unit. An evaporator coil combined with a blower is enclosed in an indoor airhandler unit within the home. In dual-fuel systems the indoor heat pump evaporator is installed in tandem with a gas furnace.


  • Using electricity as its power source, the compressor pumps refrigerant through the system to collect indoor heat (sensible and latent) and removes it from the home (summer). In the winter a reversing value in the condensing unit allows this process to be inverted, allowing ambient outdoor energy to be transferred into the residence. This heat is dissipated indoors during the heating season through the airhandler's coil which now functions as a condenser.


  • In the summer heat and moisture are removed from the home when warm air from the living space is blown over the cold indoor coil. Heat in this air transfers to the coil, thereby "cooling" the air. Water vapor from the living space air condenses on the cold indoor coil, collects in the drain pan and is carried outside via the condensate drain. In the winter heat is added to the home by reversing the refrigeration process and since the airhandler coil is now hot, no moisture condensed.


  • Heat that has transferred to the evaporator coil is "pumped" to either the exterior in the summer or interior in the winter, thus depending upon the season the cooled or warmed indoor air is circulated by the airhandler's fan, to maintain comfortable indoor temperatures.


  • A heat pump can also be provided through a package unit which combines both "split" components into a single outdoor unit and operates on the same principle.
Benefits:
  • Maintains comfort year-round - A heat pump's primary goal is to maintain a comfortable indoor ambient temperature year-round while at the same time reducing excessive summer humidity levels.


  • Cleans & sanitizes indoor air - As a heat pump system draws air out of various rooms in the house through return air ducts; the air is pulled through an air filter, which removes airborne particles such as dust, lint, pollen and other allergens. Sophisticated media and electronic filters may remove microscopic pollutants such as bacteria, virus, and tobacco smoke as well. The filtered air is then routed to air supply ductwork that carries it back to rooms in your living space. 


  • Quiet operation - Because the condenser fan and compressor unit is located outside the home, the indoor noise level from its operation is much lower than that of through-the-wall or window units.


  • Aesthetics - Heat pumps have virtually a zero living space requirement leaving your windows completely unobstructed.


  • Safety - All heat pumps come with auxiliary emergency electric resistance heat strips to serve as a backup source should the refrigeration components suffer mechanical failure during extreme cold. Heat pump units are installed by certified professionals who understand the technical challenges of high voltage wiring, high pressure refrigerant lines, and routing critical condensate lines. Therefore you can rest assured that your comfort system investment is secure and your family and home are safe from harms way. Additionally since no fossil fuels are involved your home owner's insurance premiums may be discounted (check with your insurance provider.)

How Do Gas Furnaces Work?

Technology:

  • A gas furnace works to keep a home warm during the winter heating season however the furnace's centrifugal fan, commonly referred to as a blower also plays a critical role in the operation of the summer air conditioning system. In dual-fuel systems an indoor heat pump evaporator is installed in tandem with a gas furnace.


  • Furnaces produce heat through the combustion of natural or LP gas in the furnace's burner. Heat produced from this process passes through a heat exchanger. Air from the home's return ductwork is blown over the heat exchanger, thus warming the air. The furnace's blower then propels the warmed air into the supply ductwork, which distributes the warmed air throughout the home.


  • During hot summer months, the blower inside a furnace is used to circulate "conditioned" air throughout the home--only this time, the air from the return ducts is cooled by being blown across an indoor evaporator coil of the home's split-system central air conditioning equipment. This evaporator coil is typically installed directly on top of the furnace.
Benefits:
  • Instant warmth whenever required - Gas furnaces reach design temperatures quickly, moreover blower startup is delayed until operational temperatures are assured, thus occupants receive immediate warmth from circulated air.


  • Cleans & sanitizes indoor air - As your HVAC system draws air out of various rooms in the house through return air ducts, the air is pulled through an air filter, which removes airborne particles such as dust and lint. Sophisticated filters may remove microscopic pollutants, as well. The filtered air is then routed to air supply ductwork that carries it back to rooms. Whenever the furnace or air conditioner is running, this cycle repeats continually, constantly filtering and cleaning the air in your home.

    • Cleaning process improves with the installation of a variable-speed furnace - Variable-speed furnaces use variable-speed blowers, which shift between velocities. These furnaces will run longer at a low speed, which allows them to filter the indoor air more frequently for greater duration.
    • Also consider - because the furnace plays an important role in the operation of the air conditioner, its variable-speed blower helps maintain both a consistent indoor temperature and improved humidity control in sweltering summer heat.

  • Energy efficiency -The efficiency of a furnace can be determined by its AFUE -- or Annual Fuel Utilization Efficiency. The minimum efficiency level for furnaces currently manufactured in the U.S. is 80% AFUE. A rating of "80% AFUE" means that eighty percent of the combustion heat goes directly into heating your home. Compared to many of the 60% AFUE furnaces common in older homes, 80% AFUE furnaces are a significant improvement. However, for enhanced energy efficiency, you may wish to consider a high efficiency furnace, such as TRANE's of XV and XL two stage 93% AFUE Furnaces.


  • Safety - Gas Furnace units are installed by certified professionals who understand the technical challenges of constructing a gas supply system, high voltage wiring, high pressure refrigerant lines, and routing critical condensate lines. Therefore you can rest assured that your comfort system investment is secure and your family and home are safe from harms way.


How Do Package Units Work?

Technology:

  • Package units are unique, all-in-one self contained systems that supply both cooling and heating equipment in one "package". These units can be situated in a mechanical room, at grade adjacent to the condition space or on the rooftop of your home or business.


  • Unlike split systems, package unit combine a condenser coil, evaporator coil, cooling fan, compressor and in many models, a gas furnace all in the same unit. All are equipped with a blower (centrifugal fan) to distribute the conditioned air throughout the structure.


  • Package units come in three variants.

    • Packaged heat pumps offering heating/cooling using heat pump technology.
    • Packaged air conditioners to cool your residence or business and can heat it as well, using electric resistance heat strips during the cold winter season.
    • Packaged gas-electric units offer all-in-one air conditioning and natural &/or LP gas-powered furnace performance.
    .
Benefits:
  • Space efficiency - Unlike split-systems units, all components of a complete heating and cooling system are contained in one location, making package units ideal for scenarios in which indoor space is at a premium.


  • Energy efficient heating and cooling performance - All package units now offer 13 SEER or higher cooling performance. Gas package units offer 80% AFUE heating performance or better. Commercial units utilize "economizers" which are ventilators that remove heat when outdoor temperatures are low by increasing the quantity of cool outdoor air in the ventilation air stream.


  • Low initial investment - Manufacturers can carefully match component capacity and efficiency to maximize performance in a tightly integrated cost effective package.


  • Quick installation - Since all components are factory preassembled little on-site fabrication is necessary thereby eliminating many of the challenges of split-system installations.


  • Quiet operation - Because the condenser fan, compressor unit and centrifugal blower fan is located outside the home or business, the indoor noise level from its operation is extremely low.


  • Aesthetics - Package Units have virtually zero living or commercial space requirements. Commercial roof mounted units are not visible and do not encumber at grade building perimeters in any way.


  • Safety - Package units are installed by certified professionals who understand the technical challenges of constructing a gas supply system, high voltage wiring, high pressure refrigerant lines, and routing critical condensate lines. Therefore you can rest assured that your comfort system investment is secure and your commercial establishment or home and family are safe from harms way.
    
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Last Modified: 10/26/15