Limescale Removal

Plumdog_2

Any of you guys got recommendations for dissolving heavy limescale deposits around the bottom of a gas tank type water heater? It seems that "Un-Lime" is NLA. My gut tells me vinegar is going to be too slow. I like to see smoke.  

icesailor

Smokin'

The "Smoke" is mostly CO2 vapors with acid vapors mixed in when you use acid. .

My final solution was 40 Proof muriatic acid. That masons use to clean mortar haze from brick work. Before that, I always found that the lime scale was just flakes on the bottom of the tank. When I blow the water (drain) in  the tank with compressed air into the cold water supply, and I had a hose on the drain, once the water level got to the bottom, the swirling air swept the lime flakes out of the drain. Put the drain hose in a 5 gallon bucket and see if it fills with chunks. The air and water combination gives agitation.

It worked for me.

hot_rod

A de -lime kit

Like they sell for tankless water heaters. It includes a tank and small pump. It may be better to circulate the fluid as opposed to just dumping it in



I have used Hercules Sizzle for boiler de-lime with excellent result. Most plumbing chemical manufacturers have de-lime products available.