How to clean Mouse nest in heater

You must remove the entire dash assembly to access the heater core, this takes a tremendous amount of skill and it takes about 12 hours to do. Are you sure you are up to this. Also why do you think the heater is leaking, do you see coolant or smell that sickie sweet smell of hot coolant?

the may have a mouse nest in the air box. I have seen this same problem before. you'll need to remove the glove box and then the four or six screws ( can't remember witch) from the air box and you'll be able to see the doors, heater core and evaporator. the nest will probably be all over in there.

you have leaves or a mouse nest in the hvac fan, the fan is a squirrel cage type and is out of balance because of debris in it, you can remove it pretty easily by removing the screws under the dash and it will drop down and you can clean out the debris

I suggest you remove the AC blower motor from the air ducting and clean out the drain at the bottom of the blower motor housing, it will be full of leaves or a mouse has nested in there. The blower is under the dash on the passengers side, remove glove box and lower dash under panel to access the blower.

The drain is plugged inside the blower motor case, remove the AC/Heater blower motor and clean out the leaves or mouse nest you will find in there. The blower motor is on the passenger side under the dash.

Just remove the blower motor and the nest will likely be within easy reach.

2008 nissan versa mice nest in heater fan box. how do i remove heater fan blower?

BLOWER MOTER IS UNDER FRT PASS FEET.. REMOVE BLOWER CLEAN OUT CAGE. SPRAY LYSOL TO KILL ANY GERMS...

U may be able to remove the blower motor and reach it, this is where they usually nest.

Before you take the dash off, try this: Remove the cover under the glove box. Remove the 3 screws that holds the fan motor onto the blower housing. Pull the fan motor down. Look for the rodent, or a nest. Look up, to see if a cabin air filter is installed, remove it & clean/replace. It would be very difficult for the rodent to get past the A/C evaporator & into the heater ducts, as they enter first thru the fan area. The fan usually traps the rodents.