Arrestors usually don't go bad in 3 yrs. If you have air chambers- yes and you should recharge them.

Do water hammer arrestors wear out?

Stainless steel constructed (chamber-style) water hammers seldom, if ever, need replacing and are guaranteed for the life of the plumbing. ... Piston-type water hammer arrestors are mechanical devices and are prone to failure without notice. Replacement intervals are impossible to predict due to variety of factors.

Do water arrestors stop working?

The water hammer arrestor can fail to work if water pressure is too high. With water pressure higher than 50 psi, the arrestor will not be able to do much to halt the hydraulic shock. ... Adjust the pressure at 50 or below. These valves either have an adjustable handle or are operated with a wrench.