Another efm 520 family member

Also a great update with The domestic hot water Coil.
It has saved us 90$ to 100$ a month on our electric bill. Wish I hooked it in sooner.

Well as the end of the heating season fast approaching, the boiler performed great this year using roughly
5tons of coal And made endless DHW.

I did have a question, this year I have to clean the dhw coil. What do
You guys use. I have a 110v pump and some hoses. Was gonna circulate a white vinegar/water mix thru the coil while the boiler was hot.

Is there anything you guys recommend?

That sounds fine to me.

Are you noticing reduced performance from the coil? If not, I would skip the acid and just flush it well in both directions.

Non I can tell just wanted to do a yearly Preventive flush ? I have a water softener but Would still like to flush. Is white vinegar good to use? Or should I use CLR?