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CAUTION: Do not pour water through the Exhaust Grill on the 
CAUTION: Do not pour water through 
the Exhaust Grill on the Upper Housing. 
Doing so may cause damage and personal 
injury.

CAUTION: 

 

• 

Unplug Unit when filling.

 

• 

Always place Humidifier on a firm level surface.  

 

  Locate the Power Cord so the Humidifier is  

 

 

not resting on it, and is away from traffic.

 

•  Be careful not to overfill.

 

• 

Do not pour water through Exhaust Grill,

  

 

 

doing so may cause damage and personal injury. 

 

•  Take  extra  care  to  prevent  water  spillage

 

 

  that may damage furniture or flooring. The  

 

  manufacturer will not accept responsibility for  

 

 

damage to property caused by water spillage. 

 

•  Always be sure the Power Knob is in the 

OFF  

 

 (0)

 position when plugging Humidifier into a  

 

 

grounded 120 volt AC wall outlet. 

 

•  To prevent risk of electrical shock and injury to 

 

 

  persons, do not plug Humidifier into electrical  

 

 

outlet with wet hands.

1.

  It is recommended that all Humidifiers be cleaned prior to use. 

Please read 

CLEANING

 

section for Base and  Jug cleaning.

2.

  Use the convenient Carrying Handle to bring Water Jug to a fau-

cet. Remove the Water Jug Cap by turning it counterclockwise.  
Fill the Water Jug with cool tap water. 

Never use hot water.

 

Replace the Jug Cap by turning it clockwise, until cap is fully 
sealed on gasket. Do not over tighten.

 

Be sure cap is fully sealed 

on gasket. 

(Figure 3)

When the Jug is replaced back into the Base it will quickly empty
When the Jug is replaced back into the Base it will quickly empty
to fill Base.

NOTE: While carrying filled Water Jug back to the Humidifier, hold 
the Handle with one hand, while supporting bottom of Water Jug 
with other hand.

3.

  Place  the  Water  Jug  securely  in  the  Base.  If  positioned 

 

properly, water will quickly pour into Base and automatically 
stop when reaching Base Capacity.

4.

  When the Unit is full, some water will remain in the Jug. Refill 

Water Jug if empty.

5.

  Even though your Humidifier can produce approximately 12  

gallons in a 24 hour period*, the water capacity (amount 
of water the Humidifier will hold at one time) is 6 gallons.  

FILTER CARE

Rev. C 5/12 

2084400

Rev. C 5/12 

2084400

The presence of water flow in the Water Show Window indicates 
the circulation of water to the Filter. 

(Figure 4)

1.

  Clean and dry Humidifier thoroughly per the 

CLEANING

  

section above. Do not leave any water in the Unit when storing.

2.

   Dispose of the Evaporative Filter Pad. Do not store used  

Evaporative Filter Pad in the Humidifier. 

3.

  Place Humidifier back into its carton and store in a cool dry 

place.

OFF-SEASON STORAGE

The Filter inside your Humidifier plays a very important part in its 
operation. In order to maintain peak performance, it is recommended 
to use LASKO REPLACEMENT FILTERS. 

CAUTION: To prevent electric shock, always turn Power  
Control Knob to OFF position and unplug before servicing.
1. 

  To replace the Evaporative Filter Pad, remove the Jug and Upper 

Housing from the Base. 

Be careful not to let excess water from 

pump spill onto furniture or flooring.

2. 

  Remove Evaporative Filter Pad Holder from Base and inspect 

Small Water Drip Holes for any blockage. 

(Figure 6) 

3.

  To open the Filter Holder apply outward pressure to the two 

snaps and it will hinge open. Remove used Filter from Holder 
and discard. 

(Figure 7) 

Figure 6

4.

  Insert new Filter into Holder, snap closed, and reinstall Holder 

into Base. 

(Figure 6)

 The Filter will only fit into the Holder one 

way. Make sure the Rounded side of the Filter Holder is facing 

Figure 7

outward. Replace Upper Housing, then Water Jug into Base.

5.

  To increase the life of your Filter Pad turn Filter around (so the 

bottom of Filter is now at the top). 

6.

  Filter life may be extended by cleaning the 

Filter in a 20% vinegar solution. To clean 
Filter, mix one part undiluted vinegar with 
four parts warm tap water. Soak the Filter 
in this solution for 20 minutes, rinse Filter 
thoroughly with warm water to remove 
vinegar odor.

DO NOT FLATTEN, SQUEEZE OR TWIST FILTER WHEN CLEANING

7.

  Discoloration of the Evaporative Pad is normal after  

extended use. The discoloration is caused by mineral deposits 

CLEANING

in the water, and the degree of discoloration will vary depend-
ing upon the amount of mineral content in the water. When 
the Filter surface area is thoroughly discolored, or you notice  
reduced water usage, it is a good indicator that the Filter 
Pad needs to be replaced. 

The Evaporative Pad should be  

replaced at least once every season.

The Replacement Filter to be used in this unit is:

The Lasko Replacement Evaporative Pad Model CHF 50 

(Available Separately)

Filter Pad Holder

Base

Drip Holes

Snaps

Evaporative Filter Pad

Model CHF 50

Figure 3

Carry Handle

Water Capacity of Unit is 6 Gallons

1.

  Regular cleaning is necessary to ensure proper and  

efficient operation. The frequency of cleaning depends on the 
amount of impurities which may be found in the water or how 
often the Humidifier is in operation. 

In either instance, it is rec-

ommended that the Humidifier be cleaned at least once a week.

NOTE: Unscrew bottom of Water Jug for easy cleaning. 

(Figure 8)

CAUTION: Make sure bottom of Jug is securely fastened to Jug  
before reinstalling into Base.

2.

 

TO DESCALE BASE, JUG AND DRIP SHIELD:

 Mix one part un-

diluted white vinegar with four parts warm tap water. Let vinegar 
solution stand for 20 minutes then wipe away any scale buildup 
using a soft brush or cloth. 

Do not use soap or detergents and 

never use an abrasive cleaner.

3.   TO DISINFECT BASE, JUG AND DRIP SHIELD:

 Fill Jug with 1 

teaspoon of chlorine bleach and 1 gallon of water. Let solution 
stand for 20 minutes. Carefully empty Jug and rinse well with 
water until bleach smell is gone.

4.

  Commercial  “Descalers”  and  “Bacteriostats”  are  available  at 

your local home improvement center.

5.

  Do not operate Humidifier when there is still cleaner in the 

water.

1.

  Turn fan speed knob to desired speed. 

  

- For fast humidification of a large room or house,  

    approximately 12 gallon per day.*

  

-  For normal operation. 

  

- For quiet, night time operation or after desired moisture  

    level is reached.

  * Calculations based on ambient room conditions of 70° F  

   and 30% relative humidity in a room of average insulation.

3

2
1

The current room humidity display will set itself 10 seconds after 

the power cord is plugged into a 120 V outlet.

2. 

Push the humidity set button up or down, to adjust the humidity 

to the desired level.  The desired humidity range is 25% to 95%.

 

The desired humidity level is displayed in small numbers and the 

current room humidity % is displayed in large numbers.

 

Once the current room humidity level reaches the desired hu-

midity level, the fan will turn off and the humidity indicator light 

will come on.  This light indicates that the humidifier is still on 

and will again start when the current room humidity level falls 

below the desired set level.

 

If the current room humidity drops below 25% or goes above  

95%, the display will blink off and on until the current room 

humidity is within the 30% to 90% range.

OPERATION

FILLING 

Figure 4

1

5

4

3

2

Figure 5

1.  Fan Speed Knob
2.  Humidity Set Button
3.  Desired Humidity %
4.  Current Room Humidity %
5.  Humidity Indicator Light -

 Light comes on when desired humidity 

level is the same or lower than current 

room humidity while the speed knob 

is in the on position.

Figure 8

Jug Cap

(Jug Holds 2-1/4 Gallons)

(Base Holds 3.75 Gallons)

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