What really matters when making a decision like this? Efficiency. Let Larry lay it on you: "I have a heat pump that came with the house. The difference is that these are equipped with a fan that blows the air across the water panel, leading to an increased rate of evaporation. A bypass humidifier makes use of the HVAC blower to push the humidified air through the system, whereas a power humidifier has its own fan. When the humidistat calls for humidity and the blower motor is operating, water flows Table of Contents to the distribution pan located at the top of the unit. I am the original owner. The drum is a bypass … Both bypass humidifiers and steam humidifiers keep your home at an optimal moisture level. Next up we have the Aprilaire 700M – the best whole house furnace humidifier (Fan Powered). 22-1821-01 THUMD500APA00A - Fan Powered Humidifier THUMD300ABA00A - Large Bypass Humidifier THUMD200ABM00A - Small Bypass Humidifier THUMD500A THUMD200A/300A The Aprilaire 700 humidifier has a transformer built in, to control the power fan relay and on off relay in the 700. The Carrier dealer recommended a bypass humidifier but most of the contractors we talked to seemed to recommend a fan-powered one, We are confused by all these different opinions. The power humidifier fan forces air across the water panel to produce more humidity than a bypass humidifier. Choose from whole-house humidifiers, evaporative humidifiers or steam humidifiers to fit your needs. Larger homes and those in arid climates may need a steam or fan-powered humidifier. Find A Contractor. Cons: The humidity output from a bypass unit is moderate and the furnace must be operating for the humidifier to work. The bypass humidifier is probably the more common of the two, but the power humidifier is quickly gaining popularity and is replacing many bypass humidifiers in many of our customers’ homes. 22-1821-02 THUMD500APA00B - Fan Powered Humidifier THUMD300ABA00B - Large Bypass Humidifier THUMD200ABM00B - Small Bypass Humidifier THUMD500A THUMD200A/300A The 550, 600, and 400 humidifiers come with a transformer that you can wire up. Fan-powered: these humidifiers are quite similar to bypass humidifiers in their working mechanism. They produce about one gallon more humidity every 24 hours than bypass units. A bypass humidifier has a bypass duct that utilizes the furnaces own fan to recirculate some of the warm supply air across the humidifier pad and back into the return ductwork. Otherwise, a bypass humidifier may be sufficient. The humidity control provided by these units is exceptionally hygienic since steam kills off germs and releases sterile moisture. These are a lot like bypass humidifiers. That makes a steam humidifier an excellent choice for controlling humidity in nurseries or for people with respiratory illness. This is a bypass humidifier , which uses the blower motor of the furnace to push air through the unit rather than having its own built-in fan to do this as with the Aprilaire Model 700. 360 is fan powered unit. Water Vapor Output : 18 gal./day. For instance, if you have a fan-powered or evaporative humidifier, the resulting air flows through the water as some of it gets evaporated and moisturizes the air. The Honeywell Home Bypass Humidifier automatically monitors home humidity levels, and the intuitive system only runs water and air when humidity is needed — saving up to 10,000 gallons of water per year, depending on the model and system. types of humidifiers are hooked up to your home’s central heating ducts. Fan Powered and Bypass Humidifiers PUB. We have a 3300 sq. ft. house in IL. It is compact to permit mounting in more programs, and has low water use contains the PerfectFlo water distribution tray. Bypass humidifiers can be installed on either the supply or return plenum and you run a bypass duct to the plenum the unit isn't installed on.. Power-Fan humidifiers can be installed on a vertical run of either the supply or return plenum and uses a fan to distribute humidity into the air stream. He's now wondering if it was done wrong because it doesn't seem to be working right. You can’t enjoy 100% of the output of a bypass humidifier because it has to recirculate the air it moisturizes through a furnace’s fan. I went to their site to review it and noticed powered humidifiers. Bypass and Fan Powered Humidifiers The humidifier operates in conjunction with the furnace blower motor. NO. Humidifiers Shop humidifiers to help balance the humidity levels in your home for optimum comfort. 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