
HONEYWELL  
MISTMATE
™
 
COOL MIST 
HUMIDIFIER
MODEL HUL520 Series
IMPORTANT SAFETY
INSTRUCTIONS
READ AND SAVE THESE SAFETY
INSTRUCTIONS BEFORE USING
THIS HUMIDIFIER
When using electrical appliances, basic  
precautions should always be followed  
to reduce the risk of fire, electric shock,  
and injury to people or property, including 
the following:
1.   The appliance should always be placed on a 
firm, flat, waterproof surface at least four feet 
(1.2 m) away from bedside, 12 inches (30 cm) 
from the wall and out of reach of patients, 
children and pets. Be sure the appliance is in 
a stable position and the power cord is away 
from heated surfaces and out of the way to 
prevent the humidifier from being tipped over.  
2.  The appliance should not be left unattended 
in a closed room since air could become 
saturated and leave condensation in front 
of unit, on walls and furniture. Leave room 
door partly open. Do not aim mist nozzle 
directly at children, walls or furniture.
3.  Before using the appliance, extend the cord 
and inspect for any signs of damage. Do not 
use the unit if the cord has been damaged. 
Do not operate with power cord coiled or 
twist tie in place.
4.  The appliance has a polarized plug (one blade 
is wider than the other) as a safety feature.  
This plug will fit into a polarized outlet only 
one way. If the plug does not fit fully into the 
outlet, reverse the plug. If it still does not 
fit, contact a qualified electrician. Do not 
attempt to defeat this safety feature.
5.    CAUTION: To avoid fire or shock hazard, 
plug the appliance directly into a 120V AC 
electrical outlet. To avoid risk of fire, shock or 
personal injury do not use an extension cord.
6.  The appliance should always be unplugged 
and emptied when not in operation or while 
being cleaned. Shut off and unplug humidifier 
before moving. Do not move or tilt humidifier 
while it is in operation. Plug and unplug unit 
with dry hands. Never pull by cord.
7.   Do  not operate the appliance without water. 
Turn off and unplug unit when tank is empty.
8.  Appliance requires regular cleaning. Refer  
to, and follow, cleaning instructions.
9.   Do  not operate outdoors; this appliance is 
intended for indoor residential use only.
10.   Do  not cover or insert objects into any  
openings on the unit.
11.   Do  not attempt to repair or adjust any  
electrical or mechanical functions on this 
appliance. Doing so will void your warranty.  
The Honeywell Trademark is used by Kaz USA, Inc. under license from Honeywell International Inc. 
Honeywell International Inc. makes no representation or warranties with respect to this product.