How can I clean my (inaccessible) evaporator coil on my HVAC?

Question

Can I get some some bleach into the drip pan using the drain pipe?

Answer 1

Your evaporator coil is on your AC

HVAC= heating, ventilation, air conditioning---usually reserved for technician job titles.

Answer 2

There is always a way to access the coil for an in place coil cleaning.

You cannot do it through a drain though.With a mirror and a soft bristled brush you can effectively clean it.Is yours a slab or an a- coil?

Study it.There is always a way.It is a time consuming task but worth it with the price of a weekend service call.

Answer 3

Sure but that wont clean much.

All evaporators should have access by removing panels or if it's installed in the plenum there should have been sheet metal that can be removed.

I have seen a lot of them installed with no access and have had to cut sheet metal and add removable covers.

They usually need to be accessed from the front where the refrigerant lines connect.

if the coil sits on top of a furnace (up-flow) The triangular piece of metal covering the  center has to be removed to see the side were dirt would collect.

Cleaning is done using a coil cleaner that breaks down the dirt and is flushed out.

Using a light and mirror will help ensure the coil is clean.

Coils can be damaged easily so care must be taken not to damage the fins.

This is best left up to a A/C technician.

Answer 4

no

Answer 5

Remove the blower.Take 2 screws out and unplug the harness,slide it out. Use a non rinse spray coil cleaning spray .All you do is spray on the whole can and wait 10 minutes. Clean and oil the blower motor with high quality Zoomoil. Reinstall the blower.