When they no longer work , When they are discolored, When you want to save water and up greade from 3.5 GPF to 1.6 , when they are cracked. I still service toilets that were installed in 1922
You should replace a digital thermometer when it becomes inaccurate. You should also replace it when it is damaged or cracked.
replace the starter
I am considering refacing my cabinets. How can I know if I should replace them or reface them?
when should the vapor canister be replace on a 1996 pontiac sunfire
Yes you Should
replace? why not fix it?
Replace it only if it becomes defective.
The clutch should last approx 150,000 miles. There is no need to replace this if it isn't abused
I've heard you should replace your pillow when you can bend it in half without it bending back.
You should replace the water pump on a 1999 Toyota Avalon when it becomes worn out. You can also replace it when it begins leaking.
It is highly recommended.
No, you should keep and reuse the old sink.