Honeywell Steam Humidifier Professional Installation Manual page 8

Proper Sizing of a Steam Humidifier
Converting square footage to cubic volume requires multiplying the square footage by the ceiling height
(i.e. 2000 square foot space with 10 foot ceilings is 20,000 cubic feet). In general, the higher the ceilings, the
smaller the square footage space each Steam Humidifier will cover since it must humidify the additional air
volume.
INCLUDE ALL SQUARE FOOTAGE OF THE HOME. FINISHED AND UNFINISHED.
Example 1: 2000 sq ft home: 8 ft ceilings = 16,000 cu ft. (2000 x 8)
Example 2: 2000 sq ft home: 10 ft ceilings = 20,000 cu ft. (2000 x 10)
Example 3: 2000 sq ft home: ½ with 8 ft ceilings, ½ with 12 ft ceilings. = 20,000 cu ft. ((1000 x 8) + (1000 x 12))
INCLUDING CEILING HEIGHT, FINISHED AND UNFINISHED SPACE WILL PROVIDE A MORE ACCURATE
SIZING FOR HUMIDIFICATION.
AHRI
Recommended
Humidity
(Gallons Per Day)
Recommended
Steam
Humidifier
6
Construction Type 8,000 CU FT
Tight 3.3
Average 7.6
Loose 11.7
Construction Type 8,000 CU FT
Tight
9 GPD
Average
9 GPD
Loose
12 GPD
12,000 CU FT 16,000 CU FT 20,000 CU FT
4.3 5.4
9.6 11.8
14.9 18.1
12,000 CU FT 16,000 CU FT 20,000 CU FT
9 GPD 9 GPD
12 GPD 9 GPD X2 9 GPD X2
9 GPD X2 12 GPD X2 12 GPD X3 12 GPD X3 12 GPD X4
24,000 CU FT 28,000 CU FT
7.5 9.6 11.7
16 20.3 24.4
24.5 30.8 37.1
24,000 CU FT 28,000 CU FT
9 GPD 12 GPD 9 GPD X2
12 GPD X2 12 GPD X3
Steam Humidifier System 69-2285—09
32,000 CU FT
16
33
50
32,000 CU FT
12 GPD X2
12 GPD X3
12 GPD X4