Why does my nouns conditioning spawn a loud clunk when it turns on? Just got a alien American Standard furnace that has 90% helpfulness,...
Just got a alien American Standard furnace that has 90% helpfulness, 2 stage blower, A/C Coil and a new humidifier, but kept my old-fashioned A/C Condenser outside, but got a unknown A/C coil in the furnace. Every time my A/C cycles on it clunks really loud once - similar to someone is banging against the side of the sheet metal ductwork.
Have them final out to explain what the cause is.
Sounds approaching they have something too tight when they replaced the furnace and coil and the upper air pressure is popping the duct work.
Does it bang again when it shuts stale?
It is your duct work flexing. This happens greatly. The new furnace is moving more nouns, so the added pressure causes the duct to flex making the one "bang".
Mine did it too contained by heat. I purely had to find the spot and fixed a block against it to stop the bang, stop the flex. I hold seen steel railing screwed to ducts to stiffen them and all sorts of stuff jammed against them.
If it is where they replaced the evap coil surrounded by the duct of the furnace then they cause it and should take nurture of it. If it is further down the line of the ductwork consequently likely they will speak it is not their responsibility.
What I would do is turn off the furnace switch shutting everything down. Then turn on the thermostat to cool. Then standing at the furnace turn the switch on and see if the rap is happening at hand. (or have somebody at therm to turn it rotten and on for you). All in an attempt to locate the section of the duct that is flexing.
Good Luck.
Answers: Did it do this in the past replacement of the coil? If this is a new problem the indoor coil may hold a check valve to allow it to be used within a heatpump application.
One thing thats adjectives on some change outs resembling you mention is that the sheetmetal plenum expands (or bowes out) when the blower starts. Try running just the blower inside on large speed (some 2 speed furnaces wont allow high speed right off) Keep the (220) dignified volts off your out door part while doing this look for and listen to the sound usually above your furnace. The metal plenum is feature but sometimes a fellow gets confused or forgets to put within a cross bend and the firmness of the plenum is not there. A piece of plywood screwed to the plenum can correct this if needed. But besure its not close to any heat vents, though 90% furnace should gone this type of concern.
Im betting on the ducting. It will sound only just like you discribed.
It is also possible that 1 your compressor internal mounbting spring have broken or fallen sour (no way to fix this as its inside the compressor), 2 your contactor (the switch that allowes the outdooe part to cycle on and off) may need replacing, 3 you may enjoy a line rubbing or kicking when the outdoor element starts. Listen carefully to the clunk and try to determine where on earth its comming from. Try turnming the main power (220) to the element off and the work the thermostat see if the souind disappears or change. If it changes later the contactor may be and probably is the problem. If it does nothing vociferous ans just clicks softly the problem isnt the contactor and you'll hold to feel around to determine where on earth its comming from.
The fellas that put this in for you Im sure will want to try and correct it for you, probably at no charge. If it is cause by their installation job. If its your outdoor part. You can live with it, replace the inconsistent part, or bite the bullet and replace the undamaged unit. But approaching I said its probably the ductwork sheet metal.
Let me know if this helps.
Good Cooling and enjoy a great summer.
Definitely call the company who installed it to come investigate the problem. There shouldn't be a charge on something similar to that.