Buy OEM Mercedes-Benz A/C and Heating Parts
The heater in your Mercedes-Benz not warming things up? Maybe the air conditioner isn't blowing cold? Most likely, one or another part needs replacing -- something you should do sooner rather than later, to keep spiraling repair costs down. Good thing you came to us here at MB Part Source; we stock replacement heating and AC parts for all Mercedes-Benz models, at competitive prices. Order today, and we'll ship fast, anywhere nationwide; you'll have repairs done in no time. Contact us with any questions.
Condensation Drain Line
Mercedes-Benz
232-832-04-00
Air conditioner box/heater box left drain hose.
$14.15
MSRP $19.50
Save $5.35
27.4% Off 
Hose
Mercedes-Benz
126-832-00-88
Betwen heater case and central fresh air nozzle.
$28.91
MSRP $39.50
Save $10.59
26.8% Off 
Air Duct
Mercedes-Benz
2108311146
Between heater case and left nozzle, on nozzle.
$4.67
MSRP $6.50
Save $1.83
28.2% Off 
Thermostat Valve
Mercedes-Benz
126-830-04-84
(thermo-valve),windshield heater. At central inside part.
$102.00
MSRP $170.00
Save $68.00
40% Off Duct
Mercedes-Benz
126-831-13-46
Betwen heater case and left fresh air nozzle.
$9.53
MSRP $13.00
Save $3.47
26.7% Off 
Hexagon Head Bolt
Mercedes-Benz
304017-006020
M6x20. At air conditioner case or heater case.
$2.58
MSRP $3.50
Save $0.92
26.3% Off 
Electrical Wiring Harness
Mercedes-Benz
206-540-13-52
PTC heater booster F153/2 to X293/1.
$60.00
MSRP $84.00
Save $24.00
28.6% Off 
Control Unit
Mercedes-Benz
212-900-88-08
Operating unit, heater and air cond. Air conditioner.
$226.53
MSRP $332.00
Save $105.47
31.8% Off 
Air Duct
Mercedes-Benz
201-831-08-46
Betwen heater case and right fresh air nozzle.
$4.67
MSRP $6.50
Save $1.83
28.2% Off Hose
Mercedes-Benz
201-832-00-88
Betwen heater case and left fresh air nozzle.
$8.18
MSRP $13.50
Save $5.32
39.4% Off 
Electrical Wiring Harness
Mercedes-Benz
192-540-02-03
DC/DC converter to water heater connecting point.
$223.44
MSRP $328.00
Save $104.56
31.9% Off 
Cover
Mercedes-Benz
201-680-06-36
Left,or right,seat heater. Fader control zebrano.
$96.02
MSRP $161.00
Save $64.98
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Mercedes-Benz AC and Heating FAQ
Why is the HVAC in My Mercedes-Benz Not Working Right?
Most likely, because of low or leaking coolant, a failed heater core, a defective AC compressor, or a bad AC condenser. You'll know one from the other by some key symptoms.
How Can I Tell if My Coolant's Low or Leaking?
Start your engine, setting the air conditioner and fans to max/high and listening for the compressor clutch to click. If the system runs too fast, the coolant's probably low. If your Mercedes-Benz isn't due for air conditioning service anytime soon, a leak's likely.
What are the Signs of Heater Core Failure?
The heater not blowing warm, the interior being steamy or smoky, the smell of coolant in the car, and the engine overheating. The core's hoses are the likely problem; they're probably leaking. If you need help with this or any other repairs, get in touch with a Mercedes-Benz service center.
How Can I Diagnose an AC Compressor Defect?
Look, listen, and feel. If the air conditioning sounds funny, if the cabin's warmer than usual, and if the AC clutch is stuck, it's probable. You'll know a bad clutch from connecting a voltmeter and getting no reading. Other causes of compressor trouble include low refrigerant pressure, a faulty cycling switch, and a blown fuse.
How Can I Tell if the AC Condenser in My Mercedes-Benz is Bad?
You'll know it from the HVAC warning light being lit, from frost starting to build up, from the AC button flashing, from the system having discharge pressure issues, and from the vents not blowing cold. If no air's coming through them at all, though, the blower motor's probably gone out. Other reasons for condenser issues include a failed cooling fan and a clogged cabin air filter.