How often should you do ear irrigation?

It would depend on each person, how often you have problems with ear wax. Symptoms of wax buildup include pain or itching in the ear, ringing in the ear, and partial hearing loss. Recommended cleaning ears no more than 1 or 2 times per week.

I keep hearing to use warm water, any water temperature recommendations for the ear wax removal tool kit?

This is really about your preference. Normally you can use warm water as hot as you like your shower water, what's comfortable on your skin? Using temperature is 37°C or body temperature, plus or minus 2 degrees. It shouldn't be warm enough to hurt.

How to get the heavy ear wax out with BOCOOLIFE electric ear wax cleaner?

It’s recommended to apply the ear wax drops/ear wax softener to soften wax days before earwash for heavy build-up. Move the tip in multiple directions using a circular motion in the ear canal while cleaning. You man refill bottle & repeat the process

Does this ear cleaning system for heavy wax build up has timing function?

Yes, the electric ear wax removers have a 2-minute timing function – each mode keeps working for 2 minutes & will pause so that you won’t feel uncomfortable if the ear wash time is long, just short press the ON/OFF button to continue ear irrigation.

Does BOCOOLIFE ear wax removal kit easy to use, how to get the water flow for ear washing from the ear wax tool removal?

Yes, using BOCOOLIFE electric ear irrigation system is easy. Press and hold the ON/OFF button for 1-2 sec until the LED lights flash. Then click the ON/OFF button once to start the Normal water flow for ear cleaning, and click again for pause.