Regularly change system filters every month during peak cooling or heating seasons. Your heating and cooling equipment works overtime to compensate for dirty filters, increasing your energy bill and lowering indoor air quality. New filters usually only cost a few dollars and keep your system working properly for longer.

Direct sunlight beaming through your windows is beautiful but increases the heat in certain areas. This may cause your system to work harder to cool off those rooms. During the cooling season, block direct heat from the sun shining through glass on the East and especially West sides of your home or facility. Depending on your location, solar screens, solar films, awnings, or vegetation are options to help keep your space cool. Over time, trees can attractively provide shade, and help clean the air. Interior curtains or drapes are helpful, but it’s best to prevent the summer heat from getting past the glass.

Use fans to maintain comfortable temperature, humidity and air movement, and save energy year round. Moving air can make a somewhat higher temperature and/or humidity feel comfortable. Fans can help delay or reduce the need for air conditioning. They allow your comfort temperature to be three to five degrees higher. Each degree of higher temperature can save about 3 percent on cooling costs. When the temperature outside is more comfortable than inside, a box fan in the window, or large–whole facility–fan in the attic can push air out and pull in comfortable air from the outside.

Plug leaks with weather stripping and caulking. Caulking and weather stripping let you manage your ventilation, which is the deliberate controlled exchange of stuffy inside air for fresher outdoor air.

• Turn off your air conditioner when you are not at home.
• Use a programmable thermostat to set your furnace/air conditioner to come on
  30 minutes before your arrive home.
• Insulate your attic, walls and crawl spaces.
• Replace your windows with energy-efficient windows.

A refrigeration rating system usually measured in Btu/h.

A refrigeration or air-conditioning system pump that circulates refrigerant through pipes between an outdoor and indoor unit using pressure.

The measure of static pressure losses from ductwork, fittings, dampers, grilles, and any other devices located in the airstream. ESP listed in the equipment specification charts is the amount of external static loss that the unit lower can overcome at a specific CFM.

An air-conditioning system can reverse the direction of refrigerant flow to provide either cooling or heating to the indoor space.

A rating of the seasonal efficiency of a heat pump unit when operating in the heating mode.

A term which stands for Heating, Ventilation, and Air Conditioning.

The air handler of an air-conditioning system, which contains a heat exchange coil, filters, remote signal receiver and fan and provides conditioned air into the space.

Mitsubishi Electric’s MUY, MUZ, MXZ and all P-Series outdoor units use INVERTER-driven compressor technology (Variable Frequency Drive) to provide exceptional indoor cooling and heating. By responding to indoor and outdoor temperature changes, these systems reduce power consumption by varying the compressor speed to meet load requirements providing for extra energy savings. The system operates only at the levels needed to maintain a constant and comfortable indoor environment. Our CITY MULTI® product line also incorporates INVERTER technology.

An electrical component consisting of integrated circuits, which may accept, store, control, and output information.

A component of an air-conditioning system which contains compressor, propeller fan, circuit board, and heat exchange coil. It pumps refrigerant to/from indoor unit.

A gas/liquid substance used to provide cooling by direct absorption of heat. Mitsubishi Electric products use environmentally-friendly R410A refrigerant.

Insulated copper tubing through which refrigerant flows to and from indoor and outdoor units.

A rating of the seasonal efficiency of air-conditioning or heating units in cooling mode.

A system comprised of a remote outdoor condensing unit connected by refrigerant pipes to a matching, non-ducted indoor air handler and a remote controller. Special cases for introducing ventilated air may call for limited ducting to air handler from outside.

A system comprised of a remote outdoor condensing unit connected by refrigerant pipes to a matching, ducted indoor air handler with minimal field installed ductwork and a wired remote controller.

A system comprised of a remote outdoor condensing unit connected by refrigerant pipes to a matching, indoor air handler that conditions single or multiple room space that is conditioned to a set temperature and is independent from other rooms within the same structure.

A measure of cooling or heating capacity.

A single or multiple room space that is conditioned to a set temperature and is independent from other rooms within the same structure.