CABIN AIR FILTERS
A Cabin Air Filters is used to clean incoming air for the cars HVAC system. Introduced in European vehicles, cabin air filters are now becoming common on more domestic and Asian makes and models. Some examples include the Ford Taurus, Contour, Windstar and Ford trucks; the Chevrolet Impala, Monte Carlo, Suburban, Tahoe and Silverado; and the Lincoln Navigator. Japanese cars such as the Honda Accord and Odyssey, and the Acura RL and TL use cabin filters. To date, approximately 40% of cars have cabin air filters, but the number grows each year.
The a/c cabin air filter helps trap pollen, bacteria, dust, and exhaust gases that may find their way into a vehicle?s ventilation system, making the interior of the car a healthier place.
Maintenance Tips/Suggestions: A/C Cabin air filters should be replaced according to owners? manual guidelines, usually every 15,000 miles. It?s not uncommon, however, for cabin air filter replacement to be overlooked in the owner?s manual. Do not try to clean this filter and reinstall it. For best results, consult filter manufacturer application charts to see if your car is listed. Most filters are accessible through an access panel in the HVAC housing, which may be under the hood or in the interior of the car. Some filters require basic hand tools to remove and install the filter; others just require your hands. If neglected, a restricted cabin air filter can impair airflow in the HVAC system, possibly causing interior heating and cooling problems. |
Air Conditioning hoses are designed to control liquid and gas at high pressures and temperatures. The hoses are usually flexible and crimped with special metal fittings at the ends that provide a sure seal and prevent leakage between components. If you see blisters or bumps on the hoses, you have a leak. You must replace the whole line because today we use hoses that have a liner.
Maintenance Tips/Suggestions: Hoses and valves should be inspected periodically for condition and to make sure all connections are secure. Chafed, cut or damaged hoses should be replaced. Insufficient heat, or heat that can't be turned off may indicate a problem with the heater control valve. When in doubt, have your car's HVAC system evaluated by a qualified professional.
About A/C Hoses
A/C hoses are designed to control liquid and gas at high pressures and temperatures. The hoses are usually flexible and terminated with special metal fittings at the ends that prevent leaks and provide a sure seal and connection between components. If you see blisters or bumps on the hoses you have a leak. You have to replace the whole line because today we use hoses that have a liner.
High- and low-pressure refrigerant hoses connect the main parts of the air conditioning system together. An orifice tube or thermostatic expansion valve regulates refrigerant flow in the A/C system. Service fittings provide connections for service equipment so that system pressures can be checked and refrigerant may be recovered and recycled. Heater hoses connect the engine?s cooling system to the heater core. A heater control valve may be located in one of the heater hoses to regulate coolant flow to the heater core.
Refrigerant hoses provide a path for refrigerant and refrigerant oil between the key components of the A/C system. The orifice tube (most common) or thermostatic expansion valve ensures proper refrigerant flow for different operating conditions. Service fittings, unique for each type of refrigerant, enable the connection of service equipment and reduce the chances of mixing different types of refrigerant. Heater hoses provide a supply and return path for warm engine coolant circulating in the heater core. The heater control valve may help control heater output by opening and closing coolant flow to the heater core.
Maintenance Tips/Suggestions: Hoses and valves should be inspected periodically for condition and to make sure all connections are secure. Chafed, cut or damaged hoses should be replaced. Poor A/C cooling may indicate problems with the orifice or expansion valve. Insufficient heat, or heat that can?t be turned off may indicate a problem with the heater control valve. When in doubt, have your car?s HVAC system evaluated by a qualified professional. |
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| Company | Mat'l | Color | Application Notes | | BMW | HNBR | Green | | | Chrysler | HNBR
HNBR
Neopr | Green
Red
Black | Green in most applications. Red on
new minivan. Black in new Neon. | | Ford | HNBR
HNBR
HNBR | Green
Black
Tan | Green in most applications. Black on
some orifice tubes for similar size
differentiation. Tan on one switch seal for
similar size differentiation. | | General Motors | Neopr | Black | | | Honda | HNBR | Black | | | Mercedes | HNBR
Nitrile | Green
Black | HNBR on the high side of the
Nitrile in the other sections. | | Nissan | Nitrile | Black | | | Toyota | HNBR | Black | | | Volvo | HNBR
HNBR | Yellow
Black | Predominately yellow. A few black
applications. | | | | | | | Cal Sonic | HNBR | Black | | | Chrysler | HNBR
HNBR | Green
Black | Green for service applications
Black in internal applications. | Climate Control
CCI | Neopr
Nitrile | Black
Black | Compressor is only used in truck, bus,
and agriculture applications under 200 F | | Diesel Kiki | HNBR
Nitrile | Black
Black | HNBR where units see high heat
Nitrile in shell seals | | Ford | HNBR
Nitrile | Green
Black | Green for service applications
Black Nitrile for shell on FX15(FS10) | | General Motors | HNBR
Neopr | Black
Black | HNBR for high pressure switch R4, HR6,
and V5. Neoprene all other applications. | | Nippondenso | HNBR
Nitrile | Black
Red | HNBR (RBR) for R134a applications
Nitrile for R12 applications | | Sanden | HNBR
HNBR
Nitrile | Black
Green
Black | HNBR for R134a applications. Some
HNBR is black and some green.
Nitrile for R12 applications | | | | | |
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