Low Ambient Cooling means that the system will continue to cool when the outside temperature falls below 60 degrees. Performance varies but 5 to - 5 degrees is typcial.

Heating Seasonal Performance Factor

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The amount of heat, rated in BTUs that the item can produce.

Seasonal Energy Efficiency Ratio (SEER) is a measure of cooling over an entire season. It is determined by comparing the amount of cooling produced in BTUs in relation to the amount of electricity used. A higher SEER means a system is more energy efficient and would provide comfort at a lower utility cost than a lower SEER system.

The measure of air conditioner efficiency at its maximum load

Coefficient of Performance is the efficiency ratio of the amount of heating or cooling provided by a heating or cooling unit to the energy consumed by the system. The higher the Coefficient of Performance the more efficient the system. Resistance electrical heating (such as electric baseboards) for example has a Coefficient of Performance of 1.0

A measure of heat pump efficiency while in a heating mode. The higher the number the better the energy efficiency.

Inside air conditioning systems are liquid/gas refrigerant. There are two types of this refrigerant available for use, R-22 (more commonly known as Freon), and a newer alternative R-410A.

An air conditioning system does not consume refrigerant, but reuses it. As long as there are no leaks in the refrigerant circuit, there is no need to ever add more refrigerant to an air conditioning system.

Although R-22 is an effective refrigerant, if it is released into the atmosphere it can contribute to the depletion of the Earth’s ozone layer. The EPA has mandated the phasing out the use of R-22. It is being replaced by R-410A.

As of 2010, manufacturers are required to make all new air conditioners with R-410A. However, R-22 is still available for sale in existing pre-2010-manufactured equipment, and for use in servicing existing R-22 equipment. By 2020, R-22 will no longer be manufactured, but will still be recycled and available for sale.

This unit is charged with enough refrigerant for the condensing unit evaporator coil and the length of line stated. Longer line sets can be used but would require some additional refrigerant for appropriate operation.

The maximum capacity breaker in the building's circuit panel that can be used on the dedicated electrical line supplying the equipment.

The maximum length of line set approved for any individual zone.

The maximum vertical distance between the condensing unit and the air handler.

There are two main types of connections for HVAC products brazed and flared. Brazed connections are typically used in standard split systems, and flare connections are typically used on mini splits and can be connected using a wrench.

Reciprocating compressors use a piston to compress the refrigerant.

Rotary compressors utilize a roller rotating eccentrically inside a cylinder and a spring mounted blade always rubbing against the roller. As the eccentric rotates towards the blade, the space is decreased and the refrigerant is compressed. Rotary compressors are very efficient.

Scroll compressors consists of 2 scrolls to pressurize refrigerant. Often 1 scroll is fixed and the other orbits eccentrically compressing the gas between the scrolls. Scroll compressors are quiet, smooth and offer highest efficiency ratio of all compressor types.

Scroll Ultratech™ compressors are advanced scroll compressors which offer more features and better diagnostics.

The number of interior air handlers connected to the condensing unit. Typically one, two, or three zones.

The outside diameter of the liquid line pipe (the inside diameter of the connection on the equipment).

The outside diameter of the suction line (the inside diameter of the connection on the equipment).

The noise produced by the unit rated in decibels. 30dbs is equivalent to a whisper, 60dbs is equivalent to a normal conversation, 90 dbs is equivalent to a lawn mower.

The maximum combined length of all connected line sets that can be attached to this condensing unit.

Different types of air handlers are available depending on your needs.
Wall Unit: easiest installation, lowest cost.

Ceiling Flush Mount: less visible, centralized air distribution, more complex to install.

Concealed Ducted Unit: mounts under floors or above ceiling, uses ducting to heat and cool multiple spaces.

Heat Console: mounts at floor level on vertical wall for better heat distribution. Reversed air direction in cooling mode for better cooling performance.

Floor Ceiling Console: mounts either on vertical walls or horizontal ceilings for maximum flexibility.