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BMW A/C Blows Warm: Condenser, Evaporator or Compressor
Warm air from the vents is not one repair. A condenser leak shows up as an oily spot at the lower corner or a system that goes low after a recharge, and the condenser sits behind the grille. An evaporator leak is confirmed with dye or a sniffer and means the dash comes out. A compressor failure adds a broken clutch or pulley, or a squeal from the belt, and the system has to be evacuated and recharged.
Last updated · By BimmerQuote (how we build guides) · Costs on this page come from the linked repair pages, each citing its sources.
Condenser: the part behind the grille
The condenser page lists warm air, a visible oily spot on the lower corner, and a system that is low after a recharge. Road debris holes it, and corrosion at the lower corner by the drier is also named. The job needs refrigerant recovery, the swap, and an evacuate and recharge. Aftermarket Behr or Nissens condensers cost less than genuine, and the page says to ask if you can supply one. See A/C Condenser Replacement.
The evaporator symptoms are warm air after a recharge, a leak found at the evaporator by dye or a sniffer, and a musty smell from the vents. The note says to have the leak confirmed before agreeing to dash removal. The page covers the E90, including the 335i, and the G05 X5. See A/C Evaporator Replacement and BMW G05 repair costs. A musty smell with rain water, rather than a refrigerant leak, is the BMW Sunroof Drain Clog and Wet Floor.
The E9x compressor page lists warm air, a broken compressor clutch or pulley, and a squeal or rattle from the belt area. It covers the 325i, 328i and 335i. The note says to replace the receiver-drier whenever the system has been open, and to have a shop evacuate and recharge it. See A/C Compressor (E9x) and BMW E90 repair costs.
The repair pages split it three ways: a leaking condenser behind the grille, a leaking evaporator behind the dash, or a failed compressor clutch or pulley. A fan that only works on high is the blower or the final stage resistor instead.
How much does a BMW condenser replacement cost?
A/C Condenser Replacement on a BMW F30/F32/F10/F15 and similar models typically costs $1,700 at an independent shop or $1,475 at a BMW dealer, based on 2 real owner-reported prices.
How much does a BMW A/C evaporator cost?
A/C Evaporator Replacement on a BMW E90/G05 typically costs $1,650–$2,415 at an independent shop or $8,000 at a BMW dealer, based on 3 real owner-reported prices.
How much does a BMW A/C compressor cost?
A/C Compressor (E9x) on a BMW with the N52/N54 engine typically costs $350–$1,750 at an independent shop, $2,200–$2,400 at a BMW dealer, or $75–$343 in parts DIY, based on 8 real owner-reported prices.
Where this comes from
Every cost on this page is pulled from these repair pages, which list the price, the forum or shop source and the details for each report. This guide adds no prices of its own.
