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Breathe Easier and Save On Heating Bills with an Automatic Whole-Home Humidifier
Field Controls TM-2000 ThermoMist Automatic Humidifier
Field Controls TM-2000 ThermoMist Automatic Humidifier
Field Controls TM-2000 ThermoMist Automatic Humidifier
Item# 3281TH
Price: Normally $299.99 
Hot Deal $174.46
Free shipping on orders over $175 - See Details


  • Lowest maintenance humidifier
  • Humidifies up to 5000 square foot home
  • For oil or gas fired forced air systems
  • Customize the humidifier operation for personal comfort

Essential Info

Dry air can be uncomfortable to breathe and dry out wooden furniture excessively. It also causes an increase in static levels which is especially bad if you like tinkering with electronic devices. Dry air can also cost you more in heating bills because it feels colder than humid air at the same temperature. When you add humidity to your home you can actually feel warmer at 68 degrees than you do at 75 degrees, saving as much as 15% in heating costs.

The ThermoMist is a low maintenance automatic whole-house humidifier suitable for traditional oil or gas fired forced air heating systems. It automatically detects when the heater is blowing and sprays a fine mist into the airflow, and it stops automatically when the airflow stops. The ThermoMist Automatic Humidifier is easy to install: Simply mount the control box and nozzle to your ductwork and attach it to the water supply with the included saddle valve. Plug the AC adapter into a 110V outlet.

Replacement nozzles and filters are sold separately. Optional humidistat control can be added to shut off the humidifier when desired humidity is reached. You can also plug it into an INSTEON ApplianceLinc (sold separately) for integration into your home automation system.

Please Note: This product is not to be used on electric furnaces, heat pumps, or in locations where the air temperature could drop below 40° F. This product is not recommended in areas where the water has a high mineral content. (Use FreshMist or Turbo Mist systems instead.)


What's Included

  • 1x - Control box
  • 1x - Nozzle
  • 1x - Saddle Valve
  • 1x - AC adapter
  • 1x - Instructions
  • Specifications


    Manufacturer:Field Controls
    Manufacturer Product No.:TM-2000
    Dimensions:4.5" W x 5.5" L x 3.25" D
    Heating Systems:Traditional oil or gas fired forced air
    Power Requirements:110V AC
    Home Size:Up to 3000 square feet

    Important notes:
    Defective exchanges for identical item within Manufacturer’s warranty period.
    Manufacturer contact information: Field Controls LLC, Tel: (800) 742-8368


    46 Ratings
    5 star: 37%  (17)
    4 star: 24%  (11)
    3 star: 13%  (6)
    2 star: 4%  (2)
    1 star: 22%  (10)
    Average Customer Rating
    (46 customer ratings)
    Share your thoughts with other customers
    CORINNE -- browns mills, NJ   2/27/2014
    very disappointed it was on back order and when it did come it was broken. Customer service was great. But getting a defective product makes us think twice before reordering a new one
    BOB -- olmsted twp, OH   2/8/2014
    Did not review this unit earlier due to the first one seemingly defective. After receiving second unit, also seemingly defective, found out that both had a manufacturing flaw that made the inlet the outlet and vice versa. It had been put together backwards!! After reversing the input and output line, so far, unit is working properly, but keeping my fingers crossed. Realize it's not Smarthome's fault but manufacturers. They need to step up their game, which is why only 4 star rating, hope to change that to five and not have further issue with unit.
    CHRIS -- medina, OH   2/7/2013
    First time I called - waited 30 minutes for a live perso. Second time - a minute. But both very helpful
    JOHN -- brooklyn, NY   2/7/2013
    It seems to work. This is the second replacement in 19 years. The solinoids seem to have a limited life. When it fails it spews water without a clue all over the inside of the heat exchanger and the ductwork until they begin to rust. They are far too expensive for what they are.
    DUANE -- otsego, MN   1/28/2013
    I installed product according to instructions, works great so far. ordering through SMARTHOME was easy and shipping was very fast. I will do business with them again. Duane in MN.
    GEORGE -- arlington heights, IL   12/10/2012
    I found the humidifier easy to install. with fewer parts to fail. It provides better humidification than the water pad systems, with a more economical system cost.
    SERGEI -- fair lawn, NJ   12/1/2012
    Good humidifier, but this model hasn't been updated in years. I bought this unit to replace the old one that lasted more than 15 years. The thermostat adjustment is just as finicky as the old one, still the same compression fittings where everybody else uses push-in type.
    Bryan Cromwell -- Georiga   11/10/2012
    For those needed nozzles, The are just Delavan Oil Burner, 60 Degree, .66 gph stock and 1.36 gph was the larger size. You can find on Ebay for about 6$ and from most HVAC supply stores for about 10$
    Tim -- Woodbury CT   2/29/2012
    Received my second one today and installed. This one was leaking inside the housing just like the one I sent back. Do not buy this product.
    CLIFFORD -- chicago, IL   1/26/2012
    The Thermomist Humidifier as received was essentially junk that leaked like a sieve and did not spray. However, using thread sealer restored the item to work properly. I resent having to buy complete units to replace the nozzle. The units I have purchased in the past worked fine until the nozzles plugged up. I have two control units that are still useable if anyone needa to replace the unit.
    JORGE L -- maple grove, MN   11/27/2011
    I love this humidifier. Very simple to install - Took me about 3 hours to do and the hardest part was cutting through the ducts. You just want to make sure you have a nearby water supply and a nearby power supply for it. Not as bulky as the drum type humidifiers, it doesn't require constantly caring for the drum foam thing, and the mist it creates is so fine one would swear is cold steam. You need to be careful the first few days though to make sure the level of humidity you're generating is adequate and not excessive - if it's excessive it will quickly clog your filters and make your furnace over work, which i turn will result in more humidity released and it will start dripping. Check the filter closely and adjust the humidity in the dial accordingly. Also make sure you install it following every step of the instructions or you may end up installing in the wrong place or directing the mist at the heat sensor. I would highly recomend it, it will cost slightly more than a drum type humidifier but once you add up other installation costs and the drum maintenance, you'll be happy you bought this one.
    PAUL -- cortlandt manor, NY   2/4/2011
    The remote nozzle leaked inside the housing (nothing to do with the hose connection). After fixing that (very difficult because the head was recessed) the unit did produce a fine mist and it did not have much issue with dripping. The real problem is since it can only mist while the furnance is producing heat it can not run long enough to raise the humidity levels. My house was at 10% before turning on one day and still was at 10% one hour, one day, three days later. Additionally the mist significantly cools the heated air blowing through the ducts (down 15 degrees in my last test with a non-contact infra-red temperture gun). Overall a waste of money. I will go back to my whole house steam humidifiers....they consume a ton of energy (electric to boil the water) but nets out the same as mist since mist causes the heater to run longer since the air is cooled by the mist. Additionally steam can run independant of the heater (just need the fan blowing) and can get the humidity to the desired level.
    P. -- lake hopatcong, NJ   1/31/2011
    Noticed upon installation that there are cracks in the housing for the spray nozzle. Just got around to unpacking and hooking up item and intended to contact you this week. What can I do to obtain a replacement item. All other parts are in working order. Kind regards, Peter M
    MIKEAL -- medina, NY   1/30/2011
    Works well. I would make 2 suggestions. Do not mount the misting head above your furnace. It will drip a bit so to avoid damaging the furnace mount the misting head in the trunk slightly down air stream. You may need a bucket under your trunk to catch the drips. Maybe a couple quarts over a three day period under heavy usage. My other suggestion is hard wire the power supply into the furnace so it only operates when the furnace is on. I did this by cannabising a good extension cord cutting the plug end off hardwiring that to furnace then plug in the powersupply to that. Noticed that the unit would turn off couple minutes before the furnace shut down, but a minute or so after the furnace turned off it would just come back on again. This is caused by residual heat rising up the trunk sets off the thermal switch. Raises the humidity in my 2400 sq ft home by 12% or so. Unit comes with a VHS cassette that made me almost want to pull out the old VCR and watch it. Hilarious.
    Paul -- westchester county, NY   1/26/2011
    I have an electric whole house humidifier for the top floor furnance but want to add a unit to the main floor furnance. The electric steam units consume GIANT amounts of electricity to heat the water into steam but they work great and are independant of whether the furnance is running. The Thermomist can only run when the furnance is generating heat above 120 degrees and thus it can not run long enough to increase the humidity. I have a digital humidistat to track the humidity. Before turning on the Thermomist it read 15% btw it was 25 degrees outside, after running for 10 hours it never got above 18% - just way to dry and well below my desired 30%. I ordered the higher output nozzle but it made no difference. In talking with Field Controls tech support the mfg of this device they told me the thermomist would be a great energy saver over the high wattage steam units. This, in fact, is wrong. Fact is, it takes energy to make the water evaporate - that energy can come from your furnace in the form of hot air or via electric via the steam humidifiers. Yes, the mist does evaporate but the air the is sent to the rooms is MUCH 15 degrees by my reading cooler. It makes sense - no energy is free so for the water to evaporate it needs energy from somewhere. Lastly, the remote nozzle leaked. Nothing to do with me - it was internal to their nozzle / union. I had to re-tefflon tape it and the piece was hard to tighten because of its design. PPS - the unit comes with a VHS video tape about the install. Does anyone have a VHS player any more? I don't anyway. Save your money. I'm buying another steam unit for the main floor instead.
    GEORGE -- new rochele, NY   1/22/2011
    Great product,easy to install.
    WILLIAM -- rumson, NJ   1/10/2011
    Quick delivery, easy install, works as expected.
    CALEB -- martinez, GA   6/12/2010
    Very pleased with entire kit. I installed it myself. I'll prove it for good this coming winter. It should be ideal. Thanks.
    Dave -- New Jersey   6/2/2010
    I purchased this unit 3 years ago and it has been the best investment for my new townhouse. I followed the maintenance instruction to the T and never have I had a problem. I even went and installed a water filter to be on the safe side. My house is always comfortable.
    Doggy -- Canada   4/26/2010
    Do not buy a thermomist 2000. The misting jet is prone to plugging due to natural minerals in water. It can be cleaned with clr for example but has to be done often. When plugged it drips and will soak your ducting system. Most importantly the control box malfunctioned and would not shut off completely soaking my furnace. It was not pumping but actually spraying under city line pressure alone. I had to replace the electrical control board and various other components as it was completely drenched by the time I caught it. The furnace was three years old. Would not recommend this product to my worst enemy...

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