Air Conditioning, Heating

AC Compressor Clutches and Pulleys  We offer air conditioning clutches and pulleys from AC Delco, Motorcraft and MEI Airsource. Air conditioning clutches and pulley identification and can be accomplished by taking measurements of your air conditioning clutches or pulleys and comparing them to our air conditioning clutches and pulley specifications. Another method is to cross reference the Original Equipment part/service numbers for your air conditioning clutches and pulleys that may or may not be stamped on the air conditioning clutches and pulleys or on the package of the last air conditioning clutches and pulley purchase. The air conditioning clutches and pulley used on a particular truck depends on the type of compressor selected from an option list when the truck was first assembled. In many cases after many miles of service the original air conditioning clutches and pulleys have been replaced. For whatever reason, a truck originally equipped with a reciprocating compressor may now be using a rotary type air conditioning compressor or possibly a single groove air conditioning clutch has been replaced with a double groove air conditioning clutch. To assure you get the correct AC Delco, Motorcraft or MEI Airsource air conditioning clutch and pulley the first time, it is important to identify the type of air conditioning compressor the air conditioning clutches and pulleys will be used on and the characteristics or specifications of the air conditioning clutch and pulley. Check for numbers on the air conditioning clutch or pulley to help identify the air conditioning clutch or pulley. Otherwise the following information will be needed air conditioning clutches and pulleys for the job. 1. Air Conditioning Compressor Make and Model. 2. Voltage of the air conditioning clutch or pulley. 3. Diameter of the air conditioning clutch or pulley. 4. Number of Grooves and Width of Drive Belt on the air conditioning clutch and pulley. 5. Distance of Gauge Line on the air conditioning clutch or pulley.
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AC Compressors  Commonly referred to as the heart of the system, the air conditioning compressor is a belt driven pump that is fastened to the engine. It is responsible for compressing and transferring refrigerant gas. Our air conditioning compressors from MEI Airsource, Motorcraft and AC Delco are the finest quality air conditioning compressors available. There are many different makes of air conditioning compressors used in our marketplace. Regardless of manufacture and design, all air conditioning compressors operate as the pump to keep refrigerant circulating and to increase the refrigerant's pressure. Blissfield, Tecumseh and York style air conditioning compressors are known as reciprocating, upright or in-line type air conditioning compressors. The Sanden, Sankyo, Seltec, Diesel KIKI and Zexel are rotary types of air conditioning compressors. The suction side (low side) of the air conditioning compressor and discharge side (high side) of the air conditioning compressor have ports which are usually stamped with the letters "S" or "D" on the air conditioning compressors head. Blissfield, Tecumseh and York style air conditioning compressors are completely interchangeable air conditioning compressors providing the suction port in on the proper side and the hose connections are the same on the air conditioning compressor. TIP: Always replace the filter drier when replacing the air conditioning compressor.
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AC Condensers and Evaporators  We offer quality air conditioning condensers and evaporators from AC Delco, Motorcraft and MEI Airsource. The air conditioning condenser is located on the high side of the air conditioning system. The air conditioning condenser is mounted directly in front of the radiator where it can receive air flow created by the trucks forward motion and by the engine fan. As refrigerant vapor travels from the air conditioning compressor through the air conditioning condenser, a point in reached where condensation occurs in the air conditioning condenser. The high pressure liquid refrigerant then travels from the air conditioning condenser and toward the air conditioning evaporator. There are various styles and types of air conditioning condensers used on today's vehicles. The air conditioning evaporator is located on the low pressure side of the air conditioning system. It is usually mounted inside the cab under the dash panel. The air conditioning evaporator receives the refrigerant from an expansion valve or orifice tube as low pressure liquid. As the air conditioning refrigerant passes through the coils of the air conditioning evaporator, a change occurs and the refrigerant becomes a low pressure vapor. Housed with the evaporator is the blower motor, which draws the warm air from the cab over the air conditioning evaporator and then blows or circulates the cooled air inside the cab. Next time you need an air conditioning condenser or evaporator allow us to help you find the correct air conditioning condensers and evaporators from AC Delco, Motorcraft or MEI Airsource.
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AC Driers and Accumulators  Air conditioning filter driers, receiver driers, accumulators and in-lie air conditioning filters are canisters used to filter debris and remove moisture to protect the air conditioning system. AC Delco, Motorcraft and MEI Airsource offer various inlet and outlet fitting types and sizes of air conditioning driers are used in today's vehicles. Many air conditioning driers also have air conditioning system protection devices, moisture indicators, charge ports, sight-glass, fuse plugs, high pressure relief valves and assorted mounting brackets depending on the requirements from the original air conditioning driers equipment manufacturer. Air conditioning filter driers (receiver driers) are usually located on the high side of the air conditioning system before the expansion valve. The air conditioning receiver drier "receives" liquid refrigerant from the condenser, stores it, filters out contaminates from the air conditioning system, and removes moisture. Air conditioning systems using a receiver drier use and expansion valve to control the refrigerant flow. Air conditioning Accumulators are similar to that of the receiver drier. It is usually mounted on the low side, at the outlet of the evaporator. The air conditioning accumulator "accumulates" or stores excess air conditioning refrigerant, filters moisture and dries the refrigerant. Air conditioning accumulators are used on CCOT (Cycling Clutch Orifice Tube) or FFOT (Ford Fixed Orifice Tube) air conditioning systems. These air conditioning systems use a orifice tube instead of an air conditioning expansion valve to control refrigerant flow. AC Delco, Motorcraft and MEI Airsource offer the best air conditioning driers and accumulators that money can buy.
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AC Fittings  Air conditioning fittings are available from AC Delco, Motorcraft and MEI Airsource in wide array of configurations . This is necessary because replacement air conditioning fittings must fit on to the original air conditioning fittings that exist on air conditioning components on the system. Flare air conditioning fittings are are popular too. The flare type air conditioning fittings seal with metal to metal contact and requires higher torque than o-ring style air conditioning fittings. O-Ring style air conditioning fittings achieve an effective seal in automotive air conditioning systems through the use of an o-ring placed in a specially designed groove or cavity on the air conditioning fittings. The threads on the o-ring style air conditioning fittings serve only as a mechanical connection and require less torque than the comparable flare style air conditioning fittings. O-ring style air conditioning fittings are proven to be more reliable and widely accepted as an international standard for mobile air conditioning fittings. Spring lock air conditioning fittings use a dual o-ring style OEM design used and patented by Ford Motor Company. The spring lock air conditioning fitting uses dual o-rings in a precision barrel and are held together by tube flare and garter spring. The spring lock air conditioning fitting requires special tools to disassemble and special care to insure the connection is fully engaged. Gasket seal air conditioning fittings rely on fairly heavy compression of the sealing materials to metal surfaces. Teflon Gasket seal air conditioning fittings are based on a Teflon ring being compressed into a groove known as a Rotolock air conditioning fitting. Many air conditioning systems worldwide use O-Ring style air conditioning fittings. O-Ring style air conditioning fittings employ a o-ring in a groove design. O-Ring style air conditioning fittings are popular on GM air conditioning compressors and Chrysler.
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AC Hose  We offer original equipment air conditioning hose for GM and Ford vehicles and bulk air conditioning from AC Delco and Motorcraft. We offer air conditioning hose for use with beadlock air conditioning fittings, reduced diameter fittings and EZ Clip fittings. We offer air conditioning hose with internal nylon barrier specifically designed to reduce the permeation level of ozone depleting refrigerant and chemicals in heavy duty air conditioning systems. Our MEI Airsource hose by Goodyear (4826) has undergone extensive testing to determine that our air conditioning hose is compatible with R12 and R134 refrigerants. Be sure to check the specifications to determine fitting compatibility for the air conditioning hose you select.
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AC Valves  The air conditioning expansion valve is located at the evaporator inlet. The air conditioning expansion valve controls the flow of refrigerant entering the evaporator based on the cooling load or the evaporators temperature. A metering valve inside the MEI Airsource air conditioning expansion valve moves up and down in the refrigerants flow path opening and closing the pathway inside the air conditioning expansion valve. The internal pathway is smaller than the refrigerant line, causing the pressure to drop, changing it from a high pressure liquid to a low pressure liquid mist. Sensing temperature changes, the metering valve constantly opens or closes as it precisely meters the amount of refrigerant needed. We offer air conditioning expansion valves from MEI Airsource, AC Delco and Motorcraft in a wide variety of types including block type expansion valves, externally equalized expansion valves, and internally equalized expansion valves. Air conditioning orifice tubes and expansion tubes from MEI Airsource consist of a filter screen to remove contaminants, and a calibrated tube to meter refrigerant flow. Like an air conditioning expansion valve, orifice tubes and expansion tubes are mounted on the inlet side of the evaporator. MEI Airsource cycling clutch switch turns the compressor on and off. Cycling clutch switches can be either thermostatic or pressure types. The intermittent air conditioning compressor operation controls the refrigerant flow and pressure. Count on us to provide timely and accurate supplies of MEI Airsource air conditioning expansion valves and orifice tubes.
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AC and Heat Controls  MEI Airsource, AC Delco and Motorcraft offer air conditioning and heater controls like cycling switches, cut off valves, air control switches, binary and trinary valves. The air conditioning system must have switches to control the airflow from the fan the on and off operation of the system, high and low pressure switches, relays, resistors and rotary switches. Many of these are direct after-market replacements for OE controls from Ford, GMC, Freightliner, Mack, Peterbilt, Volvo for bunk blowers and for cab blower motors these can be determined by cross referencing from the OEM number or by application look up in the MEI Airsource catalog. Other air conditioning and heater controls are universal fit items for use in any acceptable application. We also offer MEI Airsource knobs, louvers and diffusers.
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Blower Motors and Fans  Blower motors and fans are used in air conditioning systems to circulate warm and cold air inside the cab and sleeper of the truck. The blower motors and fans are used to circulate air across the fins of the heater core to warm the air in the cab. The blower motors and fans are also used to circulate air across the fins of the evaporator which cools the air and in turn cools the air in the cab. MEI Airsource blower motors and fans are available to fit most heavy duty truck vehicles. AC Delco blower motors and fans are available to fit many General Motors vehicles and Motorcraft blower motors and fans are available to fit many Ford vehicles. When replacing blower motors and fans always pay attention to the direction of rotation of the blower motors and fans. Some replacement blower motors and fans from MEI Airsource are reversible and will include instructions on how to go about determining the rotation of the blower motors and fans.
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Cab Air Filters  HVAC Cab Air Filters, also known as Evaporator Cabin Air Filters are quick and easy to replace. Cab air filters from MEI Airsource remove certain contaminants from the air such as pollen and dust particles as well as odors from diesel exhaust, fuel fumes, live stock carriers and other sources of odors on the open road. Passenger compartment air is routed through the cab air filter and this includes recirculated air and outside air as well. Reduction in air flow generally indicates the need to replace a cab air filter and this may occur more frequently when the truck is operated in dirty, dusty areas and other situations when particles are suspended in the air. MEI Airsource offers cab air filters for Freightliner, Volvo, International, Mack, Peterbilt and many other brands of heavy duty commercial trucks. Replacing a cab air filter is quick and easy. Simply open the plastic compartment containing the cab air filter, remove the old cab air filter and replace it with a more efficient MEI Airsource filter. We can help you find the correct cab air filter by cross reference, application or measurements.
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Heater Core  MEI Airsource, AC Delco and Motorcraft offer heater cores to replace original heater cores in Fords, GMC, Peterbilt, Mack, IHC, Freightliner and more. Heater core applications can be determined by cross referencing the original equipment heater core numbers, lookup by year make model application and by dimensional size. Heater core dimensions are determined by measuring the width/height, length and thickness. The width/height of the heater core is measured along the fin. The length of the heater core is measured along the actual core only. The length of the heater core is the length of the coils between the header segments. Thickness is the thickness of the heater core coil only.
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Heater Valves and Fittings  Heater valves control the flow of water through the heater core and therefore control the amount of heat introduced into the cab space of a truck. MEI Airsource offers many different types of heater valves including air operated heater valves, cable operated heater valves, electric operated heater valves, manual operated heater valves and vacuum controlled heater valves. Many different styles of universal heater valves can be retrofitted into vehicles when needed. However MEI Airsource, AC Delco and Motorcraft make many direct replacement of original equipment heater valves. The correct heater valve can be found for your need by lookup in the application guide or by cross reference of the original maker's part number.
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Kits and Repair Parts  Air conditioning kits and repair parts are useful in repairing parts of air conditioning compressors and systems. We offer kits that contain o-ring assortments and fitting assortments. These are extremely useful when doing lots of air conditioning repairs so that the small replacement parts are readily available for use. Air conditioning kits and repair parts can make big jobs easier since MEI Airsource carefully includes the most popular items needed when doing air conditioning repairs. Kits include Ford spring lock assortments, late model Freightliner assortments universal air conditioning kits and repair parts kits and standard air conditioning kits and repair parts. Retro fit kits are for older vehicle which use refrigerants that are scarce or no longer available. The older systems are frequently changed over to newer, more readily available refrigerants. Older, scarce refrigerants can be very expensive to purchase and some may be harmful to our environment as well.
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Orings and Caps  Air conditioning o-rings and caps are needed when doing air conditioning repairs and not just any cap will do the job. Many different air conditioning systems on our roads today require a wide variety of air conditioning o-rings and caps for different locations and different reasons. Air conditioning compressor service caps are plastic, aluminum, brass and other metals. R134 refrigerant caps may be labeled H for high side or L for low side. MEI Airsource offers Bridgeport Piedmont/Schrader Bridgeport caps fit on ports of the same name and are frequently used on GM and Ford vehicles. Eaton OEM port caps are found on many Heavy Duty trucks and equipment as well as Ford vehicles. Aeroquip OEM port caps are frequently found on Chrysler, Ford heavy duty, IHC, John Deere and some GM and numerous import vehicles. Air conditioning O-rings are available from MEI Airsource, AC Delco and Motorcraft for many vehicles. Freightliner Stat Seal, Ford Garter spring and Teflon Rotalock are examples of different names applied to different o-ring sealing technologies. GM, Ford, Sanden and Seltec compressors require different o-ring seals. MEI Airsource can meet all your air conditioning o-ring needs with o-ring assortments or in bulk packages for refilling the kits.
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Refrigerant and Additives  Air conditioning Freon and additives includes polyol esther oil that is specially formulated to be compatible with R12 and R134 freons and PAG Oil which is compatible with R134 only and mineral oil that is compatible with R12 only. MEI Airsource offers only the finest air conditioning Freon and additives available. Our air conditioning Freon and additives category includes chemicals needed to detect leaks in the air conditioning system. Leak detectors from MEI Airsource are available in many forms, some kits include UV lights and dye injectors. We also offer freon from Airgas Refrigerants. Our Airgas Refrigerants freon is the finest freon available, due to price volatility our price will frequently change to stay competitive with the air conditioning Freon and additives market.
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