Air Purifier

Air purifiers remove allergens, dust and other airborne particles that aggravate allergy and asthma symptoms – and can even cause illness.

Air Quality Testing

Refers to a group of products designed to evaluate and identify contaminants in the air inside closed spaces such as homes and offices. Can range from counting the particles, large and small, in the air to testing for specific pollutants such as radon and mold.


The American Society of Heating, Refrigerating, and Air-Conditioning Engineers


British Thermal Unit (BTU) is the amount of heat required to raise the temperature of one pound of water by one degree.


Cubic feet per minute (CFM) is a measurement of air movement from a fan.


A condenser is part of a product that takes a substance from gaseous state to its liquid state by cooling it. For dehumidifying, it’s used to remove moisture from the air before sending air back into your space.

Daisy Chainable

Series of multiple electrical appliances using a sequential wiring diagram.


A decibel (dB) is a unit of measurement to determine sound intensity.


A dehumidifier removes moisture from your air by pulling in air, cooling and removing moisture, then using a fan to push healthier air back into your room.


Energy Efficiency Ratio – The ratio of output cooling energy BTU’s) to input electrical energy (watts). The higher the rating, the higher the energy efficiency.

Energy Star

The government-backed symbol or status for energy efficiency. The EPA is the agency which rates various household products for energy efficiency.

Evaporative (Swamp) Cooler

An appliance that cools the air through the process of evaporation.

Exhaust Hose

When used with portable air conditioners, an exhaust hose allows the unit to draw in hot air from a room and deposit it outside the space in order to cool.

Furnace Filter

A filter that goes into an air conditioner and heating system (HVAC).

GFCI Safety Plug

Ground Fault Circuit Interrupter is a circuit breaker that quickly cuts electrical current to prevent electrical shocks.

Gold Fin Protection

An epoxy coating on air conditioning condensers that prevent rust and corrosion on the condenser coils.

Heating BTU

Amount of heat needed to raise one pound of water by one degree Fahrenheit.


HEPA-High Efficiency Particulate Air (Filtration) is a filter that captures 99.97% of particulates in the air down to 0.3 microns in size.


Heating Seasonal Performance Factor – measures the efficiency of air source heat pumps. An HSPF rating of 8 or more is considered high efficiency.


Humidifiers are appliances that increase your indoor humidity by injecting moisture into dry air in the form of an invisible mist.


IAQ stands for Indoor Air Quality and refers to the level of pollutants found in the air inside closed spaces such as homes and offices.

Line Set

Liquid and suction line set that is used in mini splits to connect the indoor to the outdoor units.


Horizontal or vertical slats that help move or circulate air through oscillation or a stationary position.


Minimum Efficiency Reporting Value is the standard rating that measures a filter’s overall effectiveness to remove large particles. The higher the number, the fewer dust particles can pass through the filter.

Micron (µm)

Micron, or micrometer, is a unit of size equal to 1/millionth of a meter or .00004 inches. A human red blood cell is about 7 microns across; a human hair is about 75 microns across; a grain of sand is about 500 microns across.


Microparticle Performance Rating measures a filter’s ability to capture microscopic particles between 0.3 and 1 microns. This rating system was developed by 3M.

Organic Vapor

Refer to gases liquids that evaporate quickly, and are made from petroleum or other carbon based substances such as nail polish remover, paint thinner, solvents-like those in detergents, plastics, gasoline, and even perfumes.


Refers to atmospheric (indoor/outdoor air) particulate matter (PM) that have a diameter of less than 2.5 microns. These particles are so small they can only be seen with an electron microscope–less that 3% the diameter of a human hair.

Rigid Cooling Media

Resin-injected, honeycomb-shaped or corrugated paper filters that fit into the sides and rear of evaporative coolers.


Hollow-formed plastic equipment made with heated molds. Plastic is evenly distributing through the mold for even thickness throughout without noticeable seams.

S-Class Filter

S (Schwebstoff) Filters absorb greater than 99.9% of airborne particles 0.3 microns or smaller. Comparable to HEPA filters. Sometimes referred to as “hospital grade.”

Sealed System

A vacuum cleaner with a sealed filtration system has a housing (body) that does not leak air. All airflow is forced through the HEPA filtration system.


Seasonal Energy Efficiency Ratio – Similar to EER, but rated during a typical cooling season. The ratio of cooling output (BTU’s) to the energy consumed in watt-hours. The higher the SEER, the greater the energy efficiency.


The industry standard measurement associated with the loudness of a sound for fans.

Toxic Mold

Mold that produces mycotoxins; the two most common are Stachybotrys chartarum (sometimes referred to as Black Mold) and Aspergillus. Causes allergic reactions and can sometimes be the cause of more serious respiratory conditions.


ULPA (Ultra-Low Particulate Air) Filters capture 99.99% of airborne particles 0.12 microns or smaller.

Wall Sleeve

Used with through-the-wall air conditioners. The sleeve embeds into the wall and helps to bear the weight of the air conditioner while keeping the unit safe from dust and debris.

WDR Air Mover

Frequently used in water damage restoration jobs, air movers move air quickly across baseboards and floors for faster water evaporation and drying times.