Humidifier Comparison

BRAND NAME & MODEL NUMBER ADAMS FH-10  FH-16  FH-20 ADAMS FH-300A  FH-300B ADAMS FH-400A  FH-400B  FH-400C ADAMS FH-1000L10  FH-1000L20  FH-1000L24 APRILAIRE 110  112 (NOTE B)
TYPE UNDER DUCT OR RESERVOIR UNDER DUCT OR RESERVOIR UNDER DUCT OR RESERVOIR UNDER DUCT OR RESERVOIR POWER FIXED PAD
CAPACITY (GPD) 10.0  16.0  20.0 13.0  24.0 13.0  24.0  32.0 10.0  20.0  24.0 14.4  24.0
VOLTAGE (VAC) 120 OR 24 120 120 120 OR 24 120
AGENCY LISTED N/A N/A N/A N/A N/A
MOUNTING LOCATION DUCT OR PLENUM DUCT OR PLENUM DUCT OR PLENUM DUCT OR PLENUM HOT AIR
OVERFLOW PROTECTION NO NO YES NO MUST DRAIN
DRAIN TYPE NO NO NO NO YES
HUMIDISTAT NO NO NO NO YES
ALL MATERIALS FOR INSTALLATION YES YES YES YES NO
EASE OF INSPECTION & SERVICE REMOVING FRONT COVER WINDOW REMOVE FROM DUCT WINDOW REMOVE FROM DUCT REMOVE FROM DUCT DISASSEMBLY OF CASE AWKWARD
CONSTRUCTION AND COMMENTS PLASTIC - KIT FOR PLENUM MOUNTING STAINLESS STEEL KIT FOR PLENUM MOUNTING PLASTIC - KIT FOR PLENUM MOUNTING PLASTIC - KIT FOR PLENUM MOUNTING PLASTIC - DO NOT SUPPLY WATER OR DRAIN TUBING
BRAND NAME & MODEL NUMBER APRILAIRE 220  224 APRILAIRE 400 APRILAIRE 440 (NOTE B) APRILAIRE 445 APRILAIRE 550
TYPE BY-PASS FIXED PAD BY-PASS FIXED PAD BY-PASS FIXED PAD BY-PASS FIXED PAD BY-PASS FIXED PAD
CAPACITY (GPD) 9.6  16.8 EST. 13.0 16.8 16.8 12.0
VOLTAGE (VAC) 24 24 24 120 24
AGENCY LISTED N/A N/A N/A N/A N/A
MOUNTING LOCATION HOT OR COLD AIR HOT OR COLD AIR HOT OR COLD AIR HOT OR COLD AIR HOT OR COLD AIR
OVERFLOW PROTECTION MUST DRAIN NO DRAIN REQUIRED MUST DRAIN PUMP MUST DRAIN
DRAIN TYPE YES NO YES NO YES
HUMIDISTAT YES YES YES YES YES
ALL MATERIALS FOR INSTALLATION NO NO NO YES NO
EASE OF INSPECTION & SERVICE DISASSEMBLY OF CASE REMOVING FRONT COVER REMOVING FRONT COVER REMOVING FRONT COVER REMOVING FRONT COVER
CONSTRUCTION AND COMMENTS PLASTIC - DO NOT SUPPLY LOW VOLTAGE WIRE, WATER OR DRAIN TUBING, BY-PASS HOSE, BOOT & MOUNTING COLLAR PLASTIC - DO NOT SUPPLY LOW VOLTAGE WIRE, WATER OR DRAIN TUBING, BY-PASS HOSE, BOOT & MOUNTING COLLAR PLASTIC - DO NOT SUPPLY LOW VOLTAGE WIRE, WATER OR DRAIN TUBING, BY-PASS HOSE, BOOT & MOUNTING COLLAR PLASTIC PLASTIC - DO NOT SUPPLY LOW VOLTAGE WIRE, WATER OR DRAIN TUBING, BY-PASS HOSE, BOOT & MOUNTING COLLAR
BRAND NAME & MODEL NUMBER APRILAIRE 560 APRILAIRE 600 APRILAIRE 700 APRILAIRE 760 AUTOFLO 40&40W  40S&40SW
TYPE BY-PASS FIXED PAD BY-PASS FIXED PAD POWER FIXED PAD POWER FIXED PAD POWER FIXED PAD
CAPACITY (GPD) 16.8 16.8 18.0 18.0 13.2  10.6
VOLTAGE (VAC) 24 24 120 120 120
AGENCY LISTED N/A N/A NONE N/A N/A
MOUNTING LOCATION HOT OR COLD AIR HOT OR COLD AIR HOT AIR HOT AIR HOT OR COLD AIR
OVERFLOW PROTECTION MUST DRAIN MUST DRAIN MUST DRAIN MUST DRAIN PUMP  MUST DRAIN
DRAIN TYPE YES YES YES YES YES  NO
HUMIDISTAT YES YES YES YES NO
ALL MATERIALS FOR INSTALLATION NO NO NO NO YES
EASE OF INSPECTION & SERVICE REMOVING FRONT COVER REMOVING FRONT COVER REMOVING FRONT COVER REMOVING FRONT COVER OPENING FRONT COVER
CONSTRUCTION AND COMMENTS PLASTIC - DO NOT SUPPLY LOW VOLTAGE WIRE, WATER OR DRAIN TUBING, BY-PASS HOSE, BOOT & MOUNTING COLLAR PLASTIC - DO NOT SUPPLY LOW VOLTAGE WIRE, WATER OR DRAIN TUBING, BY-PASS HOSE, BOOT & MOUNTING COLLAR PLASTIC - DO NOT SUPPLY LOW VOLTAGE WIRE, WATER OR DRAIN TUBING, BY-PASS HOSE, BOOT & MOUNTING COLLAR PLASTIC - DO NOT SUPPLY LOW VOLTAGE WIRE, WATER OR DRAIN TUBING, BY-PASS HOSE, BOOT & MOUNTING COLLAR STAINLESS STEEL AND PLASTIC
BRAND NAME & MODEL NUMBER AUTOFLO 97 AUTOFLO 200P AUTOFLO 244D AUTOFLO 250 AUTOFLO 300A  300B
TYPE BY-PASS RESERVOIR BY-PASS RESERVOIR UNDER DUCT BY-PASS FIXED PAD ATOMIZING SPRAY NOZZLE
CAPACITY (GPD) 19.3 14.0 21.0 15.0 12.0
VOLTAGE (VAC) 24 24 120 24 24  120
AGENCY LISTED N/A N/A N/A N/A N/A
MOUNTING LOCATION HOT OR COLD AIR HOT OR COLD AIR DUCT HOT OR COLD AIR HOT AIR
OVERFLOW PROTECTION YES YES YES MUST DRAIN YES
DRAIN TYPE NO NO NO YES NO
HUMIDISTAT NO NO NO NO NO
ALL MATERIALS FOR INSTALLATION YES YES YES NO YES
EASE OF INSPECTION & SERVICE WINDOW REMOVING FRONT COVER REMOVING FRONT COVER REMOVE FROM DUCT/CLIPS REMOVING FRONT COVER REMOVE FROM FURNACE
CONSTRUCTION AND COMMENTS STAINLESS STEEL AND PLASTIC STAINLESS STEEL AND PLASTIC PLASTIC STAINLESS STEEL AND PLASTIC - DO NOT SUPPLY LOW VOLTAGE WIRE & DRAIN TUBING PLASTIC
BRAND NAME & MODEL NUMBER AUTOFLO 400BP AUTOFLO 550-1 AUTOFLO SC-15 AUTOFLO X-15A  X-15B GENERAL 40
TYPE BY-PASS RESERVOIR STEAM TYPE CENTRAL FIXED PAD STEAM TYPE PLATE
CAPACITY (GPD) 10.0 13.2 15.0 13.2  19.1 NOT RATED
VOLTAGE (VAC) 24 120 24 120  220 NONE
AGENCY LISTED N/A ETL N/A UL N/A
MOUNTING LOCATION HOT OR COLD AIR HOT AIR HOT AIR HOT AIR HOT AIR
OVERFLOW PROTECTION YES YES MUST DRAIN YES YES
DRAIN TYPE NO NO YES NO NO
HUMIDISTAT NO NO NO NO NO
ALL MATERIALS FOR INSTALLATION YES YES YES YES YES
EASE OF INSPECTION & SERVICE WINDOW REMOVING FRONT COVER REMOVE FROM FURNACE REMOVING FRONT COVER REMOVE FROM FURNACE DISASSEMBLY REMOVE FROM FURNACE
CONSTRUCTION AND COMMENTS PLASTIC STAINLESS STEEL AUTO-FLUSH PLASTIC STAINLESS STEEL PLASTIC
BRAND NAME & MODEL NUMBER GENERAL 45 GENERAL 65 GENERAL 81 GENERAL 709 GENERAL 747
TYPE POWER RESERVOIR BY-PASS RESERVOIR BY-PASS RESERVOIR BY-PASS FIXED PAD UNDER DUCT
CAPACITY (GPD) 7.0 13.3 18.0 17.0 16.0
VOLTAGE (VAC) 24 24 24 120 OR 24 120 OR 24
AGENCY LISTED N/A N/A N/A N/A N/A
MOUNTING LOCATION HOT AIR HOT OR COLD AIR HOT OR COLD AIR HOT OR COLD AIR DUCT
OVERFLOW PROTECTION YES YES YES MUST DRAIN YES
DRAIN TYPE NO NO NO YES NO
HUMIDISTAT NO YES YES NO NO
ALL MATERIALS FOR INSTALLATION YES YES YES NO YES
EASE OF INSPECTION & SERVICE DISASSEMBLY REMOVE FROM FURNACE WINDOW REMOVING FRONT COVER WINDOW REMOVING FRONT COVER REMOVING FRONT COVER DISASSEMBLY OF CASE REMOVE FROM DUCT
CONSTRUCTION AND COMMENTS PLASTIC STAINLESS STEEL STAINLESS STEEL PLASTIC - ALSO WITH RECALCULATING PUMP DO NOT SUPPLY WATER TUBIN & BY-PASS HOSE PLASTIC
BRAND NAME & MODEL NUMBER GENERAL 800 GENERAL 1040 GENERAL 1042 GENERAL 1099 GENERAL 1137
TYPE PLATE BY-PASS FIXED PAD BY-PASS FIXED PAD BY-PASS FIXED PAD POWER FIXED PAD
CAPACITY (GPD) NOT RATED 18.0 18.0 23.0 21.3
VOLTAGE (VAC) NONE 120 OR 24 120 OR 24 120 OR 24 120
AGENCY LISTED N/A N/A N/A N/A N/A
MOUNTING LOCATION HOT AIR HOT OR COLD AIR HOT OR COLD AIR HOT OR COLD AIR HOT AIR
OVERFLOW PROTECTION UNKNOWN MUST DRAIN MUST DRAIN MUST DRAIN MUST DRAIN
DRAIN TYPE NO YES YES YES YES
HUMIDISTAT NO DAMPER DAMPER DAMPER YES
ALL MATERIALS FOR INSTALLATION YES NO YES NO NO
EASE OF INSPECTION & SERVICE INSPECTION PLATE REMOVE FROM FURNACE INSPECTION PLATE DISASSEMBLY OF CASE INSPECTION PLATE DISASSEMBLY OF CASE INSPECTION PLATE DISASSEMBLY OF CASE DISASSEMBLY OF CASE
CONSTRUCTION AND COMMENTS PAINTED STEEL PLASTIC - DO NOT SUPPLY LOW VOLTAGE WIRE, WATER TUBING & BY-PASS HOSE PLASTIC PLASTIC - ALSO WITH RECALCULATING PUMP DO NOT SUPPLY BY-PASS HOSE, WATER TUBING & LOW VOLTAGE WIRE PLASTIC - ALSO WITH RECALCULATING PUMP DO NOT SUPPLY BY-PASS HOSE, WATER TUBING & LOW VOLTAGE WIRE
BRAND NAME & MODEL NUMBER HERRMIDIFIER 50 HERRMIDIFIER 447 HERRMIDIFIER 450 HERRMIDIFIER 465 HERRMIDIFIER 470
TYPE ATOMIZING SPRAY NOZZLE BY-PASS RESERVOIR BY-PASS RESERVOIR BY-PASS RESERVOIR BY-PASS RESERVOIR
CAPACITY (GPD) 11.0 13.8 12.6 17.1  22.5 22.5
VOLTAGE (VAC) 120 OR 24 120 OR 24 AIR DRIVE 120 OR 24 AIR DRIVE
AGENCY LISTED N/A N/A N/A N/A N/A
MOUNTING LOCATION HOT AIR HOT OR COLD AIR COLD AIR HOT OR COLD AIR COLD AIR
OVERFLOW PROTECTION YES YES YES YES YES
DRAIN TYPE NO NO NO NO NO
HUMIDISTAT YES YES NO YES NO
ALL MATERIALS FOR INSTALLATION YES NO NO NO NO
EASE OF INSPECTION & SERVICE REMOVE FROM FURNACE WINDOW DISASSEMBLY OF CASE AWKWARD WINDOW DISASSEMBLY OF CASE AWKWARD WINDOW DISASSEMBLY OF CASE AWKWARD WINDOW DISASSEMBLY OF CASE AWKWARD
CONSTRUCTION AND COMMENTS PLASTIC - STAINLESS STEEL NOZZLE/FILTER PLASTIC - DO NOT SUPPLY TRANSFORMER, WIRING, WATER TUBING & BY-PASS HOSE PLASTIC - DAMPER DO NOT SUPPLY WATER TUBING PLASTIC - DO NOT SUPPLY LOW VOLTAGE WIRE, TRANSFORMER & WATER TUBING PLASTIC - DAMPER DO NOT SUPPLY WATER TUBING
BRAND NAME & MODEL NUMBER HERRMIDIFIER 486 HERRMIDIFIER 490 HERRMIDIFIER 707 SERIES HERRMIDIFIER 1400 HERRMIDIFIER 2000
TYPE POWER RESERVOIR POWER FIXED PAD ATOMIZING UNDER DUCT UNDER DUCT
CAPACITY (GPD) 20.3 21.3 6.0 18.0 25.0
VOLTAGE (VAC) 120 24 120 24 120 OR 24
AGENCY LISTED N/A N/A N/A N/A N/A
MOUNTING LOCATION HOT AIR HOT AIR COLD AIR DUCT DUCT
OVERFLOW PROTECTION YES MUST DRAIN NO YES YES
DRAIN TYPE NO YES NO NO NO
HUMIDISTAT YES YES 707TW ONLY YES YES
ALL MATERIALS FOR INSTALLATION NO NO YES NO NO
EASE OF INSPECTION & SERVICE REMOVING PANEL SERVICE GAUGE DISASSEMBLY OF CASE NONE DISASSEMBLY OF CASE REMOVE FROM DUCT WINDOW REMOVE FROM DUCT
CONSTRUCTION AND COMMENTS PLASTIC - DO NOT SUPPLY WATER TUBING PLASTIC - FIBER MEDIA COMPLEX DESIGN DO NOT SUPPLY WATER TUBING PLASTIC PLASTIC - DO NOT SUPPLY LOW VOLTAGE WIRE PLASTIC - PLUG-IN POWER WATER LEVEL INDICATOR DO NOT SUPPLY WATER TUBING
BRAND NAME & MODEL NUMBER HERRMIDIFIER 3500 HERRMIDIFIER 4000 HERRMIDIFIER 5000 LAU 3300 LAU 3800
TYPE SPRAY FIXED PAD SPRAY FIXED PAD STEAM TYPE BY-PASS RESERVOIR BY-PASS FIXED PAD
CAPACITY (GPD) 13.2  15 16.6  19 13.9  17 14.0 17.0
VOLTAGE (VAC) 120 OR 24 120 OR 24 120  230 24 24
AGENCY LISTED N/A N/A N/A N/A N/A
MOUNTING LOCATION HOT OR COLD AIR HOT OR COLD AIR UNDER DUCT HOT OR COLD AIR HOT OR COLD AIR
OVERFLOW PROTECTION MUST DRAIN MUST DRAIN NO YES MUST DRAIN
DRAIN TYPE YES YES NO NO YES
HUMIDISTAT YES YES YES YES YES
ALL MATERIALS FOR INSTALLATION YES YES YES (NOTE A) (NOTE A)
EASE OF INSPECTION & SERVICE REMOVE FROM DUCT REMOVE FROM DUCT REMOVE FROM DUCT REMOVING FRONT COVER REMOVING FRONT COVER
CONSTRUCTION AND COMMENTS PLASTIC PLASTIC PLASTIC - OPTIONAL PLENUM KIT GALVANIZED WITH ELECTRO BAKED ENAMEL PLASTIC
BRAND NAME & MODEL NUMBER LAU 4300 LAU 4400 LAU 5200 SKUTTLE 35-1  35-2  38-SE2 SKUTTLE 39
TYPE BY-PASS RESERVOIR POWER RESERVOIR UNDER DUCT BY-PASS FIXED PAD POWER FIXED PAD
CAPACITY (GPD) 17.5 18.0 21.0 15.4 16.5
VOLTAGE (VAC) 24 120 24 120  24 120
AGENCY LISTED N/A UL N/A N/A N/A
MOUNTING LOCATION HOT OR COLD AIR HOT AIR DUCT HOT OR COLD AIR HOT AIR
OVERFLOW PROTECTION YES YES YES MUST DRAIN MUST DRAIN
DRAIN TYPE NO NO NO YES YES
HUMIDISTAT YES YES YES DAMPER YES YES
ALL MATERIALS FOR INSTALLATION YES YES YES NO YES
EASE OF INSPECTION & SERVICE REMOVING FRONT COVER REMOVING FRONT COVER CLEAR SEE THRU CASE DUCT/CLIPS REMOVING FRONT COVER REMOVING FRONT COVER
CONSTRUCTION AND COMMENTS PLASTIC PLASTIC - MAY BE REMOTE MOUNTED PLASTIC STAINLESS STEEL DO NOT SUPPLY WATER TUBIN, DRAIN TUBING & BY-PASS HOSE STAINLESS STEEL
BRAND NAME & MODEL NUMBER SKUTTLE 45SH  90SH SKUTTLE 55UD SKUTTLE 85 SKUTTLE 86UD SKUTTLE 190
TYPE BY-PASS RESERVOIR FIXED PAD UNDER DUCT UNDER DUCT UNDER DUCT BY-PASS RESERVOIR
CAPACITY (GPD) 11.5  19.2 20.0 18.0 17.0 17.0
VOLTAGE (VAC) 24 24 24 24 24
AGENCY LISTED N/A N/A N/A N/A N/A
MOUNTING LOCATION HOT OR COLD AIR DUCT DUCT DUCT HOT OR COLD AIR
OVERFLOW PROTECTION YES MUST DRAIN YES YES YES
DRAIN TYPE NO YES NO NO NO
HUMIDISTAT NO YES YES YES YES
ALL MATERIALS FOR INSTALLATION (NOTE A) NO YES YES (NOTE A)
EASE OF INSPECTION & SERVICE WINDOW REMOVING FRONT COVER REMOVE FROM DUCT REMOVE FROM DUCT REMOVE FROM DUCT WINDOW REMOVING FRONT COVER
CONSTRUCTION AND COMMENTS STAINLESS STEEL DO NOT SUPPLY DRAIN TUBING PLASTIC - DO NOT SUPPLY DRAIN TUBING PLASTIC PLASTIC PLASTIC
TO THE BEST OF OUR KNOWLEDGE: THIS INFORMATION IS AN ACCURATE REPRESENTATION OF DATA CONTAINED IN THE MANUFACTORERS LITERATURE
NOTES:  
NOTE A = INSTALLATION KIT AVAILABLE WHICH MAY BE PURCHASED SEPARATELY
NOTE B = MUST BE CONNECTED TO HOT WATER FOR HEAT PUMP APPLICATION

BRAND M/N TYPE UNIT SIZE PLENUM OPENING SQUARE FT AREA
APRILAIRE 700 POWER 15-29/32 W X 15-31/32 H X 10-11/32 D 14-7/8 W X14-3/16 H 1050 TO 4200
APRILAIRE 600 BYPASS 14 W X 15-1/8 H 10-3/8 D 6" DIA ROUND OPENING 9-3/4 W X 12-1/2 H 1000 TO 4000
APRILAIRE APRIL400 BYPASS 14 W X 15-1/8 H 10-3/8 D 6" DIA ROUND OPENING 9-3/4 W X 12-1/2 H 1000 TO 4000
APRILAIRE APRIL500 BYPASS 12-7/8 W X 12-3/4 H X 9-1/8 D 6" DIA ROUND OPENING 9-3/8 W X 9-1/2 H 750 TO 3000
APRILAIRE 360 SELF CONTAINED 13-34 W X12-3/4 H X 15 D N/A 1100 TO 4500
GENERAL 1099 FLOW THROUGH 16 W X 16 H X 11 D 7" DIA ROUND OPENING 13-1/4 W X 9-1/4 H 2500 TO 5476
GENERAL 1042 FLOW THROUGH 15 W X 11-1/2 H X 9 D 10-1/4 W X 9-1/2 H 2086 TO 4571
HONEYWELL HE225 BYPASS     UP TO 3000
SKUTTLE 2000 BYPASS 12-1/2 W X 13-1/2 H X 6-5/8 D 6 DIA ROUND OPENING 10 H X 9 W UP TO 3333
SKUTTLE 2002 POWER 18-5/8 H X 13-3/4 H X 9-5/8 D 10-5/8W X 16-5/8 H UP TO 4525