Mist Maker FAQ

Please read your manual carefully. There is a lot of important information included. Please also check out our FAQ Maintenance Section. Our "Things to Avoid" list will save us both time and money. Click here for troubleshooting a mist maker.

To make a DIY humidifier, simply place an ultrasonic mist maker in a water reservoir, then use a small waterproof fan to push air into your water reservoir and the mist through output holes into your grow tent, room, or enclosure. You can create a fully automated humidifier by connecting a humidistat for automated humidity control and adding an auto-fill water valve. For step-by-step instructions, including recommended parts and assembly instructions, see our blog post on How to Build a DIY Humidifier.

You don’t need to adjust output just to make mist—your mist maker will run at full output by default. However, there are several safe ways to reduce or control mist output, depending on your specific needs:

• First: Never remove a disc to reduce output. Removing discs will damage your mist maker and void warranties. Never allow water under the discs.
• Precise, Automated Control:
  For applications requiring accurate humidity—such as mushroom cultivation, laboratory humidification, meat or cheese curing, incubators or home humidification—use our humidistat controller. This device automatically cycles your mist maker on and off to maintain your desired humidity level at the preset levels.
• Manual Output Adjustment:
  For easy, hands-on control—ideal for special effects, cooling, or flexible environments—our Mist Output Controller lets you turn down the mist output with a simple voltage control dial.

A float is strongly recommended, but a mist maker can run without one as long as the water level and the mist maker’s position remain perfectly stable. You must maintain at least 20 mm (about 0.8 inches) of water above the surface of the ceramic disc at all times; too much or too little water will cause performance issues or stop mist production altogether. The supplied float automatically keeps your mist maker floating at the ideal depth for consistent operation and maximum mist output.

The 120mm fan is our most popular choice and works well for most applications larger than 2x4 feet that also need sufficient fresh air exchange(grow tents). Use it for maximum mist dispersion in grow tents, greenhouses, rooms, or other similar spaces.

For smaller setups like terrariums or special effects, an 80mm fan is often sufficient. It provides enough airflow without overwhelming the space, or diluting the fog with air. This will give a foggy flow for a cool creeping fog effect.

Additionally, with larger mist makers, you can turn down the speed on a 120mm fan to achieve a similar slow-effect mist if desired. This is ideal for large mist makers when making a water-only fog machine.

• Do NOT add bleach to your reservoir, as it WILL immediately damage the mist maker discs. It also chemically reacts with the stainless steel and will cause corrosion.
• The easiest method to keep water clean is to use our UV sterilizing light. Just drop it into the reservoir to kill bacteria and algae, greatly extending the time between cleanings and assuring the mist output is clean.
• You can also add 3% hydrogen peroxide at a 20:1 water-to-peroxide ratio once per week. Adjust the dosage based on effectiveness in your environment. You can also find stronger concentrations online.
• Always avoid mist makers with LEDs and clear reservoirs. The light in your reservoir will cause algae and promote bacterial growth.

Regular sterilization with these safe methods ensures optimal mist output and extends the life of your ultrasonic mist maker.

Most of the time, yes—the fan should be plugged into the humidistat. This setup allows the humidistat to automatically turn the fan on at the same time as the mist maker. Most humidistats, like our Willhi Humidistat, have one plug. Some have two, like our Inkbird Humidistat. However, on the Inkbird, one is for humidification and one is for dehumidification. With both Hydrometers/humidistats, you will need a plug splitter or power strip to plug both the fan and mist maker into the humidistat.

If your application requires fresh air exchange in the humidified area, you can run the fan constantly to maintain airflow independently of the humidistat's control and feed fresh air into your room using the fan. Then, when the mist maker turns on, it will humidify the incoming air.

The most likely cause is that your fog output holes are too small. When the fog tries to escape the water reservoir, if the holes are restrictive, the pressure can push fog back up through the fan rather than flowing smoothly out the exhaust holes. A 4" output hole is recommended. Smaller holes will result in lower fog transfer and reduce efficiency.

To fix this issue:

• Increase the size of the output holes to allow the fog to escape freely, preventing it from being forced back through the fan blades.
• If your output holes cannot be adjusted, try reducing the fan speed. A slower fan speed moves less air, helping the fog flow properly without pushing back.

Choosing the right size mist maker can be tricky because many factors affect your humidification needs. While some humidifier brands advertise coverage “up to 2000 sq ft” for certain units, actual requirements vary widely based on:

• Ambient humidity: Lower starting humidity means you’ll need more mist maker discs to raise moisture levels effectively.
• Target humidity: A higher desired humidity level also requires larger or more powerful units.
• Air exchange: The amount of fresh air entering the space plays the biggest role. Continuous air exchange (like open windows or HVAC) will require more output to maintain humidity.
• Room construction: Materials like concrete absorb moisture and can increase your humidification needs.
• Lighting and temperature control: Air conditioning or heating can impact humidity and mist maker performance.
• Temperature affects humidity absorption: Warmer air can hold and absorb more moisture than cooler air, so humidification is generally more effective and faster in warmer environments.

If your application has low air exchange, a smaller mist maker unit may suffice, but it may take longer to reach the target humidity. Conversely, in high air exchange environments, a larger, more capable unit is better to keep up with the air exchange rate.

It’s generally advisable to select a mist maker that can run less frequently at full capacity rather than an undersized unit that must run constantly. Remember, mist makers generate heat, and long run times in small reservoirs can raise water temperatures above 120°F, potentially damaging the discs.

 Choosing the right mist maker humdifier for a reptile enclosure, terrarium, or small grow space like a Martha tent is usually straightforward. Most users find that a single disc mist maker paired with either a 80mm fan for reptile tanks or a 120mm fan for Martha Tents works well.

For humidifying a small greenhouse or Martha tent 2x4X6 feet or smaller, a single disc unit can usually raise humidity to the high levels above 90% thats required for mushroom fruiting.

If your grow room area is 4x4 to 5x4 feet, consider upgrading to a 3-disc mist maker for better coverage and faster humidity adjustment. The 3-disc is especially recommended if you experience high air exchange, very low ambient humidity, or if you plan to expand your setup.

Check out our great article on building a Martha tent for mushroom fruiting for detailed instructions and tips.

Mist makers with 3 or 5 discs are commonly used for medium-sized spaces, such as:

• Mushroom tents or grow rooms, approximately 4x4 up to about 7x7 feet
• Greenhouses of similar size
• Bedrooms and living rooms that require moderate humidification without very high humidity levels

These units provide sufficient mist output to maintain stable humidity efficiently in these medium-sized environments.

Check out this customer’s video on building a DIY humidifier. He uses it to regulate humidity in a guitar building facility, but the same setup works great for any moderate-scale humidification project.

For rooms around 10x20 feet or larger, or40' shipping containers, mist makers with 12 discs or 12XL units are typically required for 95% humidity levels in grow rooms, greenhouse, mushroom fruiting chamber humidification—especially for higher humidity targets or spaces with significant air exchange, hot grow lighting, heating or air conditioning. These larger units deliver the volume of mist needed to maintain stable humidity in 40' shipping containers, big grow rooms, greenhouses, or commercial setups.

For even larger applications, multiple mist maker units may be necessary to achieve adequate coverage and humidity control across the entire space.

 Choosing a mist maker for around a 10x20' room or larger will most likely need a 12 disc  or 12XL unit for higher humidity applications, or applications with high air exchange and lots of lights or AC. Much larger applications could take multiple units. 

Check out this customers video on building a DIY humidifier. He's using it to regulate humidity in a guitar building facility, but can be used for any humidifying application. 

Sizing mist makers for very large spaces can be challenging due to multiple variables, including ambient humidity, air exchange, and heating or cooling systems in the environment.

Our 12XL Mist Maker kit, with a capacity of 9000 ml/hour, is designed to handle most large-scale projects effectively.

For projects larger than 20x40 feet with humidity targets up to 95%, it may be necessary to use multiple mist maker units to achieve consistent humidity levels throughout the space.

For example, in a warehouse setting where the current humidity is 20% and the target is 60%, if starting with one 12XL unit increases the humidity to 50%, you can assume your second unit would also add around 30%.

Based on this, adding a second unit would put your levels around 80%. Therefore, you can likely add a 9-disc mist maker to achieve your goals.

It’s generally advisable to overshoot your target humidity slightly. This reduces run times for each mist maker unit, preventing overwork and extending their lifespan.

Both the Inkbird and Willhi humidistats are solid, reliable options with strong followings. The best choice depends on your specific needs:

• The Inkbird unit features two outlets: one for a humidifier and one for a dehumidifier. This makes it ideal if you require both humidification and dehumidification in the same space. However, if your sensor needs replacement, you must contact the manufacturer directly for parts, and the sensor requires disassembly for replacement.
• The Willhi model is favored for its easily replaceable sensor, which we recommend. Replacement sensors can be shipped directly from our warehouse, ensuring you’re back up and running quickly if a sensor fails.

Beyond this key difference, both units perform well and offer dependable humidity control and dependable sensors. Choose Inkbird if dual humidity/dehumidification control is necessary; choose Willhi for ease of sensor maintenance and fast support.

Choosing the right size isn't always easy. Everyone's setup is different, and judging the amount of fog you are seeing isn't as easy as judging water. For 100% fogponic grows, the biggest mistake is buying too small of a unit and not getting enough fog. It has to be VERY thick. Just because you see fog, doesn't mean that you have enough to feed a plant. It's always hard to give an exact model to use, but bigger is almost always better. I always recommend buying the largest unit you are comfortable affording, and here's why...

The bigger units put out the fog very fast, and reduce the required run time, thus reducing your water temps and creating a very dense fog. To get the fog thick, you need to run the fan as slow as possible to get the fog into the root zone. The more air you add into the fog, the more diluted/ thinner your fog is. I almost always recommend our 80mm fan for fogponics.  The 120mm is overkill unless you have a very large setup.

A 6-12 disc unit is typically advised for 100% fogponic grows with multiple sites. You can use a smaller unit if you have a water chiller or large reservoir (so you can extend your run times) or if you do a hybrid grow such as fog with a shallow DWC, NFT, or the Kratky Method.    In other words, the bottom 25% of the root is in nutrient water, and the top 75% is in fog. You can use a smaller unit with this method Typically a 3-5 disc for multiple sites, or a single disc for a 5 gallon bucket type grow. 

To get a starting point for cycle times, turn on your Mist Maker and run it until the fog is as dense as possible in the root zone. This is your on-time. Shut off your Mist Maker and see how long it takes for most of the fog to dissipate. This is your off time. This will give you a good starting point for your cycle times. It is hard to give ]exact times as every setup is so different. 

Cloning with a mist maker is fairly straightforward. In most small cloning applications a single disc unit can be used. Keep in mind that fog is heavier than air, so you may need to raise the water level to hold the fog up in the root zone. Check out our DIY Fogponic Cloner video for more information. 

The Kratky Fog Method uses the Kratky Method combined with Fogponics. Introducing a fogger to the upper 2/3 of the root ball, while leaving the bottom 1/3 immersed in the nutrient solution is a great way to get started in Fogponics. 

With this method, a much smaller mist maker can be used to feed the roots. 

Making your own Nutramist unit is easy:
Find an airtight container such as a five gallon bucket.  
Drill a hole for a micro-waterproof fan and a hole for your output hose. 
You can make a separate nutrient reservoir by connecting an external 5 gallon bucket via a mini float that keeps the main units water level at the correct level. 

See our Blog Post on Making a Vertical  Fogponics Tower for more pictures and videos.

Making a Vertical  Fogponics Tower is an easy way to start growing with Fogponics. Although, the easiest way to start growing with Fogponics is the 5 Gallon Bucket Hybrid Kratky Method. The one thing to remember with vertical hydroponic towers is that fog is heavier than air and tends to settle at the bottom. Therefore, we need to introduce the fog at the top of the tower and not the bottom.One of the best ways to do this, and also use a smaller mist maker is to create a hybrid drip/fog system. To do this, you will  have your Ultrasonic Mist Maker mounted at the top of the Fogponic tower (without the black float) inside an overflowing container that is fed nutrient water via a pump located at the bottom of the tower. (see pictures of our Vertical Fogponics Tower Diagram)Depending on the size of your Vertical Grow Tower, you could use anywhere from a Single Disc Mist Maker up to a 12 Disc Mist Maker. The customer uses a Single Disc Fogger mounted at the top of the tower in this Vertical Fogponic Tower Video . They pump nutrients to the top of the tower which feed the fogger and then overflows back down over the roots on its way back to the nutrient reservoir in the base of the tower. The fog that was generated during the cycle is then left behind for several minutes until the pumps next cycle commences.  100% Fogponic grows can also be achieved in a vertical tower as well. To do this, you would have an external fog generator that supplied fog directly to the top of the tower, and the condensated waste would be collected at the bottom of the tower. Check out our video on how to make a Nutramist fogger. A 100% Fogponic Grow requires a larger fogger to supply very thick fog allowing the plants to receive enough nutrients. A 5 disc Mist Maker (minimum) should be used in a similarly sized fog tower if growing with 100% fog. 

Water droplets from a Mist Maker will carry anything that the water contains, unlike the humidifiers that heat the water. Minerals, nutrients, antifungals can be carried from the reservoir in the fog. This allows for excellent results while using a mist maker for fogponics, greenhouse humidification and sterilization. How can you argue with these results!

-Running the unit for more than 8 hours on, one off. 

-Using Bleach or other "slimy" additive that can cause an immediate buildup on the discs (Vinegar for cleaning and hydrogen peroxide for water sterilization is recommended) 

-Not having the 2 part mist maker float fully seated/ pressed together. This can cause the unit to sit too high out of the water. Partially activating the U-Shaped water level sensor. 

-Running in too little water, or running the tank out of water. This can overheat the water as the level drops. The water acts as a heat sink to keep the unit cool. 

-Allowing water temp to exceed 105F-120F can shorten the lifespan considerably. Always operate in as much water as possible. Preferably a 27 Gallon container for 6-12 disc units. 

-Getting water in the spring area during a disc change. NEVER let any liquid in the spring area. Always dry the unit before maintenance, and remove the discs before long term storage. 

-Lifting the unit out of the container by the power cord, or damaging/ manipulating the water level sensor. Do not try to adjust it. 

-Pinning the power cord with the lid of your water reservoir. This can cause the unit to lift out of the water at an angle as the water level drops.  

- Using distilled water, or very high-quality RO water, or A/C discharge water. TDS below 15PPM, give or take a few, can cause intermittent operation or a stutter and stress the unit. Use salt, calcium carbonate, or cut low TDS water with tap water to increase your TDS level slightly.  

-Leaving the white discs installed while storing the unit long term after using it. This can leave trapped moisture under the discs which can result in failure.    

- Running more than one fogger in the same tank. This can cause quick disc wear due to electrical interference.   

If your output drops, the first thing to check for is water under your discs. If the area is dry, then you probably just need to clean the discs. 
First, take the silver disc key that you received free with your order.
Unscrew the silver retaining rings. 
Remove the white disc by popping it out with a soft instrument or your thumbnail. Be aware that the discs may stick to the o-ring. DO NOT lose your o-rings, or you will allow water to enter the unit. 
Soak the discs in white vinegar for a few minutes and then wipe them clean!

ALERT: If you are installing brand new discs, the black protective ring is to be thrown away. It is NOT to replace the clear o-ring. The o-ring is good for the life of the unit. 

Check out our video on changing mist maker discs. https://www.youtube.com/watch?time_continue=135&v=oJcJa003SM4&feature=emb_logo

To keep your humidifier's water reservoir clean, we recommend adding Hydrogen Peroxide at a ratio of 20 to 1, once a week if you're using 3% drug store strength.

Do not use Bleach in your water!

We also recommend considering the UV sterilizing light which will also greatly extend cleaning intervals. We recommend the UV Sterilizer Light be run on a timer for 3 hours per day. 

Cleaning the humidifier is extremely easy. Just empty the water reservoir, and spray down the inside of the container, and the mist maker with vinegar. Let it sit for a few minutes and wipe it all clean. The white discs can be gently scrubbed with a toothbrush, and then rinsed off without removing them.

If mist output is still low after cleaning, you can thoroughly dry the silver transducer, and then remove the discs for exchange with new ones. DO NOT allow any moisture to get under the discs when removing them. Dry the unit 100% before removing discs. More info can be found in the video: How to change the discs in an Ultrasonic Mist Maker.

DO NOT clean the water level sensor aggressively. It is fragile, and can break. 

DO NOT USE BLEACH to clean the unit, reservoir, or discs It will corrode stainless steel, and will leave a film on the discs that will ruin performance, and possible the entire transducer.

Storing your mist maker properly is important. Make sure to remove your ceramic discs if storing the unit for more than a week or so. Any moisture trapped under the discs can cause corrsion. 

The max run time for a mist maker is 8 hours on, 1 hour off. This can be broken into smaller increments as needed. 

The most important factor is keeping the water temperature under 105F/ 40C. This is easily done by keeping enough water in your reservoir. A Mist maker with 5 discs or less can be used with 5 gallon bucket, but it's important to keep it pretty full. Larger units should be used in a 20 gallon container or larger. 

It's important we determine if it's the silver fogging transducer or the black transformer that is the problem. In most cases, the silver transducer is the problem and the black transformer is fine. 

Click this link for troubleshooting an Ultrasonic Fogger.

Ultrasonic mist makers have a wide range of applications across various industries and environments. Some users need up to 95% humidity for mushroom spawning, while others use them to humidify bedrooms or even build DIY whole-home humidifiers to maintain comfortable humidity levels around 55%. Mist makers are even used to create ultra-realistic fake fire effects, like the one featured in Katy Perry’s music video, using fake fire on our Instagram.

Common Uses for Ultrasonic Mist Makers

• Mushroom Fruiting
• Fogponics
• Reptile Enclosures
• Greenhouse Humidification
• Home Humidification
• Commercial Humidification

Rare and Interesting Applications

• Sterilization
• Guitar Building
• Gasoline Nebulization
• Automotive Water Injection
• Wine Aging
• Concrete Curing
• Cheese Caves
• Meat Aging
• Hot Yoga
• Dust Control
• Swift Nest Breeders
• 3D Printing
• T-Shirt Printing
• Equipment Cooling
• Odor Control
• Essential Oil Dispersion
• Foliar Feeding
• Incubator Humidification
• Laboratory Climate Control
• Stage Fog
• Fog Screen for Projections
• Pond and Hardscaping
• Haunted Houses
• Growing Sprouts & Spouting Seeds
• DIY Fogponic Cloners
• Realistic Fake Fire Effects
• Wind Tunnels
• Science Center Projects
• Tornado Simulators
• Mold Control and Remediation
• Fish Tanks
• …and many more!

Almost any​ type of​ water can be used with a mist maker as long as there is at least 15 PPM  of total dissolved solids in the water. The water sensor on the fogger requires at least some dissolved solids in the water in order to create a strong connection. 

Using something such as distilled water will cause the water fogger to operate erratically, and can cause damage over time. Hard water can also be used with a mistmaker, however, it will require you to clean the ultrasonic discs more often. This can be easily done just by using a clean rag or q-tip to wipe off the built-up calcium on the ultrasonic discs.

You will notice with hard water that you may get a white dust that lays on surfaces if the TDS count of your water is too high.

House of Hydro ultrasonic water foggers use high output ceramic discs that vibrate 1.7mhz to silently create microscopic (<5 micron) water droplets. Ultrasonic humidifiers make a cool "dry" fog that is great for reptiles, greenhouses, and home humidification. Mist Makers use a piezoelectric transducer for a high frequency mechanical oscillation just below the surface of the water. Mist Makers do not use dry ice, fog liquid, heat, chemicals. 

I first discovered this coating when I sold a mist maker to a University Professor that had been commissioned to test the top 5 leading Corrosion Inhibiting compounds (CIC's) used by the airline industry. He was using our mist makers to create a high salt (salt fog chamber) environment for the experiment. They tested the top 5 anti corrosion sprays used by aircraft manufacturers, and he shared his results with me.  
The spray I am using came out well on top, repelling corrosion many months longer than the others.  These coatings are not for sale to the general public and used by the military and the airline industry. They do sell online in a few aero-specialty stores, but It's extremely expensive at $48 for 6oz! I have commissioned local body shop to spray and bake of CIC to provide a superior mist maker that isn't available anywhere else. 

For protection of all commonly used aerospace metals and alloys:

Organic Super penetrating Water displacing Heavy-duty hard wax based coating Tack-free film (except on plastics/rubbers where is does not cure as well. ie the base of the power cord) Superior salt repelling properties DO NOT use Tuff Coat in strong chlorine. 
This is a must for any users with abusive applications such as fertilizer, gasoline, perfumes, salt water, or hard water.  Even with regular water the Tuff coat will help extend the life of your mist maker. 

Some chemicals can cause the coating to turn chalky white. This is normal. 

This coating is not paint. It is extremely tricky to spray, and may have a run or two, but does not affect the quality of the coating. 

We double the warranty when protected with Tuff Coat!

Image below is Tuff Coated. 

Use these articles to answer questions that customers have about your products and services. You can use text, links and images and also group articles into categories.

Similar to a subwoofer turned upside down, House of Hydro ultrasonic water foggers use high output ceramic discs. The ceramic discs vibrate at an ultrasonic frequency to silently create microscopic (< 5 micron) water droplets. Ultrasonic humidifiers make a cool fog that is great for reptiles, greenhouses, and home humidification. Mist Makers use a piezoelectric transducer for a high frequency mechanical oscillation just below the surface of the water. This vibration creates a very fine, very dry fog that is instantly evaporated into the air. Water foggers do not use dry ice, fog liquid, heat, or chemicals.

Yes, they can be placed just about anywhere. The fog is dry so it can be used around (not above) electrical appliances, animals, and fish.

Do not touch the discs while the unit is in operation. The ultrasonic vibrations from the fogger hurt! Touching the disc while it's running will feel almost like a shock or burn that you can feel all the way to the bone. We know, we've tried.

You can use many different oils with a mist maker, including essential oils. These oils can increase surface tension of the water and reduce the output though. To help correct this, you can use a plant safe product called Coco-Wet to greatly improve performance. 

The factory life span of Mist Maker discs is approximately 3,000 to 5,000 hours. This can be reduced or improved based on your water quality, and whether or not you maintain your Mist Maker by cleaning the discs. 

 Aside from having the low output 16mm disc, the Led's are causing algae growth in the nutrient water due to all the light. This will cause a myriad of problems with a hydroponic grow. 

We've had quite a few customers in the past use our transducers to replace the Dimplex unit.  I do think the cord is quite a bit longer though. I think most customers managed just fine.

 You may either have to replace just the discs, or the entire transducer. If there's no water movement at all, then you'll probably need the transducer. If you have some water movement, then you may be able to change the disc only. It's not a guaranteed fix though. You can check the size of your Mist maker discs with a standard penny. If the disc is larger than a penny, then it is the 20 mm disc. If it's smaller than a penny, then it's the sixteen millimeter disc. It just needs to be removed from the unit in order to measure it.

We have discs available here, replacement transducers here, and the whole Mist Maker kit here. 

Yes! The humidity created by a Mist Maker is great for reptiles. You can make your own reptifogger with a small container and a fan. You can also just use gravity to drop the mist into the tank. It's that easy! 

Yes! The mist produced by the water fogger is negatively charged. Dust and allergens in the air are positively charged. The two particles bind together and become heavy enough to fall to the floor where they can be easily vacuumed up! 

We have a customer that owns a large pet store with puppies. He's using shredded newspaper for bedding. It makes a ton of dust that lingers in the air and causes the place to stink. He has a 12 disk mist maker with a 120mm Hydro Flow Fan that does the trick!

No, you cannot use it in distilled water, but you can use a Mist Maker in RO water if the PPM/TDS level is over 15 or 20ppm. The water level sensor uses the dissolved solids in the water to activate the water level sensor. If you are using low TDS water (Such as RO water), you may notice a stutter or pulse from the unit if the PPM is lower than 20. (sensitivity varies, but under 15PPM tents to cause stuttering) This can stress the mist maker and wear it out prematurely. Please increase the total dissolved solids in the water by adding tap water, a pinch of calcium carbonate, or salt. This will allow your water sensor to make a stronger connection.

The 6 disc has a linear configuration that improves efficiency, while the 9 disc unit has 3 inner discs that are in a very turbulent area. 

Shipping to the USA is Free. 

Shipping to all other countries is at the lowest possible price. 

Please be aware that your country may or may not charge import duties if you live outside the USA. 

Yes, we do! We have shipped to almost every country in the world! Our 230V units come with a UK style plug only. Most customers use a heavy duty travel plug adapter.  International shipping cost varies from $7 to around $60 for typical sized orders. 

The product ships via UPS for most orders and arrives around 7 days from your order date. 

 We ship most orders within one business day using the US Postal Service and UPS.

Most small orders ship via the US Postal Service 3-day priority and larger orders ship via UPS ground 5-day delivery. (Usually 6-disc units and larger) 

International orders of smaller items usually take 10-13 days via the US Post.  Orders of 3-disc units and larger usually ship via UPS and take about 5-7 days depending on location and customs clearance. 

Yes, you may be charged if you are in Canada, Mexico, or other countries outside of the USA. We do our best to keep them low. A recent customer had $29 worth of fees for a $450 order. Your fees may vary based on location and order total.

Depending on the size of the unit, we often remove the exterior packaging to reduce the shipping costs you have to pay. Domestic orders are almost twice the cost to ship with packaging, and international order typically have increase prices of almost 40%. All 1 disc units come in product boxes. Most others come removed from the original packaging to allow for reduced box size during shipment. All units are brand new! 

Only if you live in Florida. 

House of Hydro Mist Makers Warranty

At House of Hydro, we stand behind our mist makers with an industry-leading warranty because we believe in quality you can trust!

We work hard to keep warranty exchanges fair and fast for your humidity-critical applications. However, being fast can open the door to potential warranty fraud.

We’re a small, family-owned business run by me, John, my wife, and our two adult children. We deeply value honesty and mutual respect. Warranty fraud is theft. Please, if you wouldn’t take from someone’s wallet, please don’t take advantage of our warranty policy.

We’re here for you and your business every step of the way. Thank you for being here for ours. We truly appreciate you.

• Our mist makers come with a 1-year warranty without the Tuff Coat protective sealant and a 2-year warranty with the Tuff Coat.
• For items older than 90 days, shipping costs for warranty replacements will apply.
• Transducer warranty replacements for units over 6 months old will also require customers to cover shipping and the cost of new discs installed in the transducer.
• All other products come with a standard 1-year warranty.
  

Want to upgrade your unit? Customers wishing to exchange for a larger mist maker can do so within 14 days if the product is in new or near-new condition with original packaging.

Need to return? Items can be returned within 30 days if in new or nearly new condition with intact packaging. Refunds will be for the original purchase price minus any incurred shipping charges. If packaging is missing or the unit is damaged, a restocking fee of up to 20% may apply—but we’re reasonable people and won’t charge unless truly necessary.

Special note: For mist makers bought within one month of Halloween, a 20% restock fee will be applied to all returns.

Have questions? Please don’t hesitate to contact us. We’re happy to help!