Honeywell HM509H8908
TrueSteam Humidifier 9 gpd with H8908 Humidistat
**Discontinued** will be replaced by HM609A1000.

TrueSteam   6GPD 9GPD 12GPD
The TrueSteamâ„¢ 9 gallon per day with H8908 manual humidistat. This next generation of humidification makes air feel warmer.

TrueSteamâ„¢ takes the best features from current steam humidifiers with their efficiency, performance and decreased water consumption,and combines it with the ease of installation, reliability and value of flow-through humidifiers. TrueSteam is different from others because it operates independent of equipment operation. Furthermore, with its near 1:1 humidification delivery rate, TrueSteam always delivers the right amount of humidification.

Honeywell's TrueSteamâ„¢ Humidification System works independent of your heating and cooling system, so your home gets the moisture it needs exactly when it needs it.

Skuttle F60-1 13 GPD
Clean fresh water makes clean fresh airUV100 Ultra-Violet Purifier
TrueSteam Installation Manual (72 pages, 5.7M pdf) Model Numbers for TrueSteam with the various humidistats (2 pages, 1.1M pdf)
TrueSteam Owners Manual (56 pages, 5.9M pdf) TrueSteam makes a comfortable home (2 pages 1.2M pdf)
HM50 Frequently Asked Questions for TrueSteam  (2 pages, 1M pdf)Compares features of TrueSteam with FlowThru models Such as Aprilaire (1 page, 35k pdf)
Installation video for the TrueSteam  (8 Minute video wmv, 30M pdf)Feature comparision with General-Aire Elite Steam DS15  (4 pages, 720k pdf)

TrueSteam Series Parts

Duct Injection Nozzle for Humidifier 50028003-001
Cover for TrueSteam 50028004-001
Latch foir TrueSteam 50024921-001
Remote Humidifier Nozzle 50028001-001
Water Level Sensor Assembly 50027998-001
Remote Duct Nozzle 50028002-001
Wire Channel Harness 50022641-001
Mounting Bracket 50020012-001
50020017-001 Water Tank
Remote hose and nozzle kit 50024917-001
Solenoid Valve for TrueSteam 50027997-001
Saddle Valve Self Piercing 32001616-001
50024895-001 Sediment Screen for Tank In-Line filter 50028044-001

Water Quality

Steam humidifier Corrosion problem
steam humidifier corrosion problem
Reverse Osmosis filters makes water acrid. Plastic tubing is needed for RO water. It eats copper.

Corrosion has been major problem with steam humidifiers. The manufacturers blame chlorine and include a charcoal filter. The charcoal filter needs to be replaced once a year to be effective in removing chlorine. Never the less we hear from customers with heating elements showing premature corrosion. On the top left photo is a Honeywell HE440 that was in service for a week.

The Skuttle and White-Rodgers steam humidifiers have been in service for decades. A few years ago they upgraded the heating element. The element is now larger and surounds the float. The float was plastic but now it is stainless steel. We stock only the new models. Premature corrosion is NOT covered under warranty.

Filters such as reverse osmosis can leave water acrid as shown on the buttom left photo. Acrid water can be balance by calcium treatment, a filter that slowly dissolves calcium in to the water. For steam humidifiers we recommend a expert experienced with your local water to help determine a series of filters and treatment that will balance your water.

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