Our compressor makes noise before it gets running. Could one of the bands be loose? - Celia Cisneros Hi, my ac works good, but it makes a clanking noise. The home A/c unit at start of a cycle sounds as if a pair of shoes are in the dryer, what may cause this noise? - Frank Reader Question: Clunks and thunk sounds as if a pair of shoes are in the dryer Loose debris in the condenser unit, blowing around, such as leaves and twigs may make a rustling noise or chattering noise.Compressor/condenser unit fan blades loose, bent, or hitting an obstruction at the outdoor unit.if an expansion valve has failed a compressor can have trouble re-starting against high head pressure. Sticking TEV or EEV caused chattering noise: Check and monitor refrigerant pressures is important.Relay switch or contactor chattering noise:.Leave power on and the crankcase heater on for 24 hours before starting the compressor/condenser unit. Cold weather compressor start-up chattering: lubrication failure, destroying the motor.Ĭheck for a failed crankcase heater on the compressor motor or check for someone trying to start the compressor motor in cold weather when the crankcase heater has not been on long enough. Chatters, Clanking Noises, Clunks, Thunks, Shoes in the Clothes Dryer: Sounds from A/C Compressor Common causes of chattering noises or clanking noises at air conditioners & heat pumps Let me know what you're told.īy posting your recording here we also invite comments (at page bottom) from other readers. Of course an onsite experienced tech may indeed fine something else. Rattling noises are diagnosed at HVAC NOISE-4 POP, RATTLE, ROAR, RUMBLE - loud start, popping, rattling, roaring, rumbling, running water sounds. We give somemore clunking noise explanations below, and similar That sounds like a wobbling fan blade hitting something OR an A/C compressor that's getting liquid slugging - refrigerant returning to the compressor motor in liquid form - which is a bad thing. HEAT PUMP CLANK RATTLE NOISE RECORDING Click to play this sound recording - you may need to turn up the volume on your device Reply: The unit cools great, and no other issues, just loud weird noises in the middle of the night! Problem is the noises are loud enough to wake me up!! - Anonymous by private email 5 I've had two companies out already, one more set to come out next week, and still no answers. Only get the noise when the unit isn't blowing air. The unit can run all day and usually not make any noise, but at night will make the noise with great frequency, and the noise isn't quiet. Added a *.wav file with the noise that comes from the air handler. HONKING SOUNDS at the A/C or Heat Pump systemĮxample Recording of Rattling Clanking Noise Question: any idea what's making this noise?.GURGLING SOUNDS from the AC or refrigerant piping.GROWLING compressor sounds (also see Groaning above).GROANING sounds from A/C or heat pump system, diagnosis.FAN NOISES wobbles, motor hum, depending on speed, also ticks & clicks.CLICKING SOUNDS from air conditioner or heat pump system.CLANKS CLUNKS from air conditioner or heat pump system.CHATTERING RELAY CONTROL SWITCHES - separate article: chattering at control relays in mechanical equipment.HVAC NOISE-2 CHATTER CLANK FAN GROAN - chattering, clanks, clunks, cyclical, fan, fog horn moans and groans, growls.HVAC chattering, clanks, clunks, cyclical, fan, fog horn moans, honks, groans, growls Noise Group 2 Article Contents We also provide an ARTICLE INDEX for this topic, or you can try the page top or bottom SEARCH BOX as a quick way to find information you need. To rattling loose bolts and hardware, to costly compressor damage indicatingĪir conditioning compressor or A/C compressors at or near end of their life. This air conditioning repair article discusses theĭiagnosis and repair of air conditioning compressor noises which range in importance from normal (if annoying squeaks and squeals, How to diagnose these noises: clanks, clunks, cyclical, fan, groans, growls sounds at an air conditioner or heat pump.Īir conditioner or heat pump noise diagnosis & cure: We have no relationship with advertisers, products, or services discussed at this website. InspectAPedia tolerates no conflicts of interest.
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