Bryant 345MAV, User'S Information Manual

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furnace air filter be checked every 3 or 4 
weeks and cleaned if necessary.

If installed with factory-specified dis-
posable media filter, check or replace fil-
ter before each heating and cooling 
season. Replace disposable media filter 
at least once a year.

The air filter is normally located in the 
blower compartment. (See Fig. 2.) 
If air filter has been installed in another 
location, contact your dealer for instruc-
tions. To inspect, clean, and/or replace 
the air filter(s), follow these steps:

1. Turn off electrical supply to the 

furnace. (See Fig. 16.)

2. Remove main furnace door. 

(See Fig. 18.)

3. Remove blower access panel. 

(See Fig. 19.)

NOTE:

 It will be necessary to remove  

2 screws.

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4. Remove air filter from furnace.

• AIR FILTER(S) LOCATED IN 

END OF FURNACE:

a. Slide filter retainer sideways until 

it is free of latch. (See Fig. 20.)

b. Slide air filter out of furnace. 

(See Fig. 21.)

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• AIR FILTER LOCATED IN SIDE 

OF FURNACE:

a. Remove filter retainer from latch. 

(See Fig. 22.)

b. Gently remove air filter and care-

fully turn the dirty side up (if 
dirty) to avoid spilling dirt from 
the filter. (See Fig. 23.)

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5. Inspect the filter. If torn, replace it.

NOTE:

 If washable filter that was 

shipped with the furnace has been 
replaced with an electronic air cleaner 
(EAC), refer to the EAC Owner’s Man-
ual for maintenance information.

6. If washable filter, wash filter (if 

dirty) in a sink, bathtub, or outside 
with a garden hose. Always use 
cold tap water. A mild liquid deter-
gent may be used if necessary. 
Spray water through filter in the 
opposite direction of airflow. 
Allow filter to dry.

7. Reinstall clean air filter.
8. Reinstall filter retainer.
9. Replace blower access panel and 

main furnace door.  Be sure to 
replace 2 screws in blower access 
panel. (See Fig. 24 and 25.) Turn 
on electrical supply to the furnace.

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If your furnace air filter needs to be 
replaced, be sure to use a factory autho-
rized filter of the same size that was 
originally supplied. Use the furnace fil-
ter table and compare your furnace size 
with the proper filter size.

FURNACE AIR FILTER TABLE

 * Furnace with a side return-air inlet may have a dif-

ferent filter size. Measure the filter to obtain the 
correct size.

FURNACE 

CASING WIDTH 

(IN.)

FILTER SIZE*

(IN.)

FILTER TYPE

17-1/2

(1) 16 x 25 x 1

Cleanable

21

(1) 20 x 25 x 1

Cleanable

24-1/2

(1) 24 x 25 x 1

Cleanable