Cleaning Evaporator Coils (air handler)?

Before you start using off-label products, give a whirl at some evaporator coil cleaner. I'd much rather you spent a long time working at it with a chemical that just barely gets the job done, than switch up to something stronger, harsher, that damages the coil. Yes, you'd rather get things done easily but if you ruin your coil, that's going to be a big, painful bill to pay just for trying to save a little time and effort.

Evaporator coil cleaner can be found at HVAC supply houses - check your Yellow Pages - and some appliance parts dealers.

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I strongly doubt what you're calling "lime scale" is actually scale. The moisture that forms on your evaporator coils is pure water condensed directly out of the air - it doesn't have any minerals in it. It's the purest water in your house, or at least it is until it gets to the gunk that's growing in your condensate pan.

But will the evaporator coil cleaners remove lime deposits?

You can check about evaporator coil cleaner with your local HVAC dealer otherwise there is a risk of damage to your heat pump....

no clr too bad it works awesome try white vineger i use it on my coffee maker when it starts slowing down i just run it thru a cycle it works good maybe try heating it paint brush maybe let it sit a few rinse it off i gave you the magic potion you figure the formula it'll remove it that im sure of