I have a 2007 Chevrolet HHR and recently noticed that after the air conditioner has been running for a while it will alternate between ice cold air to very warm air. Could the freon be running low?
Also, if it starts blowing warm, but after a short time blows cold again, it is just ther cycling of the compressor. If it stays warm, you could have a few different things going on.
Frigidaire 28,000-BTU Window Air Conditioner FRA296ST2, Air Conditioner Central Goodman 13
Seer 3Ton R410 Nate, Air Conditioner Central Goodman 13
Seer 5Ton R410 w/Coil, 3HP Air Conditioner Fittings Filter Drier Copper Tone, Frigidaire FRA052XT7 - Air conditioner - white, EVERSTAR Portable AIR CONDITIONER Manual, EDGE STAR 8,000 BTU ULTRA PORTABLE AIR CONDITIONER-W/ SELF EVAPORATIVE SYSTEM, Mini Split AC Connection Line Set 25' Installation Air Conditioner, Portable Air conditioner used, Comfort Seal - Window air conditioner cover 18" x 27" x 18", Frigidaire FAS256N2A Thru-Wall/Window Air Conditioner, LG Goldstar GWHD5000 Thru-Wall/Window Air Conditioner, Bryant Heat Pump Condenser 650ANX036,3 TON,36,000 BTU,Central Air Conditioner, Haier 5000 BTU window air conditioner for rooms 100 to 150 sq. ft. (HWF05XCK-T), Haier CPN14XC9 Portable Free Standing 14,000 BTU Air Conditioner, Haier CPN10XCJ Free Standing 10,000 BTU Portable Air Conditioner, DELONGHI 11,000 BTU PORTABLE AIR CONDITIONER W/ REMOTE PAC-A110 11000 BTU AC, Amana APN10J 10,000 BTU Windowless Portable Air Conditioner - Silver/Black, 14000 BTU Portable Air conditioner, Brand New!!!, Amcor ALP 12000E Portable Air Conditioner, Haier HWF05XC6 Thru-Wall/Window Air Conditioner , A/C Safe Universal Air Conditioner Support AC-160, 60,000 BTU (5 Ton) Ductless Commercial Air Conditioner Split System, LG LP0910WNR 9,000 BTU Portable Air Conditioner, Ductless Mini Split 9000 Air Conditioner A/C Cooling + Heat Pump Soleus KFTHP-09, Rose Flower Print Home Indoor Lace Air Conditioner Cover, DANBY 5000 BTU PORTABLE AIR CONDITIONER ELECTRONIC CONTROLS DPAC5009 5K BTU AC, DANBY 7,000 BTU PORTABLE AIR CONDITIONER ELECTRONIC CONTROLS DPAC7099 7000 AC, DANBY PREMIERE 12,000 BTU PORTABLE AIR CONDITIONER WITH DEHUMIDIFIER DPAC12011BL, Portable Hand Held USB Mini Air Conditioner Fan Cooler - Pink +Bottle + USB Wire, Sunpentown 10,000 BTU Portable Air Conditioner, DELONGHI PORTABLE PINGUINO PAC-260 AIR CONDITIONER, AMCOR MF 9000 BTU Silver Portable Air Conditioner AC, Air Conditioner, Window - 5,000 BTU, New ARCTICPRO YPC-07C 7000 BTU Portable Home Electric Air Conditioner AC LED, Frigidaire FRA053PU1 Portable Air Conditioner, Whynter 14,000 BTU Dual Hose Portable Air Conditioner (ARC-14S), LG Electronics LW2511ER 24,500 BTU Window Air Conditioner with Remote, Whynter 12,000 BTU Dual Hose Portable Air Conditioner with Heater, Frost White, LG Electronics 5,000 BTU 115v Window Air Conditioner with Remote,