suction fluctuation - wall noise - http://www.hvacmechanic.com/ Forums

Original message

fyrbawl

75.75.41.228

"suction fluctuation - wall noise" , posted Sun 10 Aug 15:08

I'm a newbie. Daughter complained of noise in room. Location of noise in wall appears to be refrigerant lines - very noisy. Gotta think these should have been insulated...? Checked pressures to be sure not low causing the noise. Never noticed before the suction fluctuating from 64 to 72 about every 3-4 minutes...? Outside temp about 82. Thoughts ?

THANKS, Jeff

Replies:

yuri

142.161.69.146

"Re(1):suction fluctuation - wall noise" , posted Sun 10 Aug 16:02

If it has a TXV then that is modulating the pressure and is normal. Noise is liquid freon running thru lines and is normal. Wall would have to be opened up and lines covered with fibreglass pink insulation to quieten them down.

Yuri

mgussler614

24.210.134.93

"Re(2):suction fluctuation - wall noise" , posted Wed 13 Aug 23:22

or the coil has the wrong pistion in it is the home a new build

guz 1