Faucet - single handle with sprayer wand by Grohe.
I'm trying to replace the cartridge inside to stop the whistling noise. (This was done ~1 yr ago for the same problem. The initial whistle started ~5 yrs after the house was built.) The problem is that I cannot shut off the hot water using the shut-off value under the sink. Even after tight closing, there is good amount of flow to make a real good mess. I am able to shut off the cold water using the other value, by the way.
I saw in another thread that the value needs to be replaced. Is this an easy job? What tools do I need? A valve failure 6 yrs after construction - is this normal?
Also, is it normal to have the new cartridge make the whistling noise in 1 year? I may be able to replace just the washer, but since the original noise was followed by complete failure of the cartridge (a part broke), I think I'll just change the whole darn cartridge. Or, is there an easier/cheaper way to fix this noise?
Thanks a bunch.