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Honeywell HHM10 Humidity Monitor

4.5 4.5 out of 5 stars 1,352 ratings
Currently unavailable.
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Color: White
Color White
Brand Honeywell
Item Weight 4.16 ounces
Battery Description AAA
Mounting Type Tabletop

About this item

  • Use with your humidifier to confirm when ideal humidity level is Reached
  • Displays relative humidity and room temperature
  • Large LED display is easy to read
  • Requires 1 AAA battery (included)
  • Designed for indoor use
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From the manufacturer

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Honeywell Humidity Monitor, White

  • Displays relative humidity and room temperature
  • Large LED display is easy to read
  • Change from Fahrenheit to Celsius with the touch of a button
  • Humidity comfort levels shown below display
  • Clamshell can be pegged or displayed on shelf
  • No programming required
  • Requires 1 AAA battery (included)

Product information

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Honeywell HHM10 Humidity Monitor

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Product Description

The Honeywell humidity monitor allows you to maintain comfortable humidity levels in your home by monitoring the humidity level.

Top Brand: Honeywell

Highly Rated
100K+ customers rate items from this brand highly
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PriceCurrently unavailable.-13% $19.99
List: $22.99		$15.98-23% $19.99
List: $25.99		-5% $19.29
Typical: $20.36
Delivery—
Get it as soon as Friday, Mar 7
Get it as soon as Friday, Mar 7
Get it as soon as Friday, Mar 7
Get it as soon as Friday, Mar 7
Customer Ratings
4.54.5 out of 5 stars1,352
4.54.5 out of 5 stars853
4.54.5 out of 5 stars303
4.64.6 out of 5 stars149,401
4.64.6 out of 5 stars935
Sold By
power source
battery quantity
upper temperature rate
operating humidity
mounting type

Customer reviews

4.5 out of 5 stars
1,352 global ratings

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Customers say

Customers find the humidity meter useful and reliable. It has an easy-to-read digital display that shows temperature and humidity levels. They find it simple to set up and understand, with large numbers that are visible from across the room. Many consider it a good value for the price. Customers appreciate its size, look, and reliability. However, some customers have mixed opinions on its accuracy.

AI-generated from the text of customer reviews

Select to learn more
FunctionalityHumidity levelReadabilityValue for moneySizeLookReliabilityAccuracy
64 customers mention "Functionality"51 positive13 negative

Customers like the humidity meter's functionality. They say it works well, is useful, and reliable. It measures small changes in humidity and temperature accurately and quickly. Many find it easy to read and a good item to have in their house.

"...Works really well and we’ve had them for quite a few years and haven’t had to change the batteries." Read more

"...It works great...." Read more

"This is doing a great job for me...." Read more

"this didnt work at all. i put a new battery in an it still wouldnt work. if you could rate ia at minus 5 that is the rating i would give it" Read more

56 customers mention "Humidity level"41 positive15 negative

Customers appreciate the humidity meter. It has an easy-to-read digital display that shows temperature and humidity levels in different parts of the room. They find it helpful in setting humidifiers on high or low, and it takes the guesswork out of when to use them. The meter is simple to set up and can switch between Fahrenheit and Celsius as desired.

"...that the numbers are large and easy to read--and that the temp is a different size so you can easily glance at it and not confuse the two numbers...." Read more

"...it against another digital stand-alone unit, the digital readout on my Honeywell humidifier, and an old analog dial gauge)..." Read more

"...So, this is an inexpensive and convenient way to monitor my humidity and to know when to turn on my humidifier." Read more

"...I came back the temperatures were reading the same but the humidity was well off (25% and 30%)...." Read more

47 customers mention "Readability"42 positive5 negative

Customers find the humidity meter easy to read and understand. It has a clear digital display and large numbers that are helpful to see from across the room. Overall, customers are happy with the product's readability.

"...I like that the numbers are large and easy to read--and that the temp is a different size so you can easily glance at it and not confuse the two..." Read more

"...However, in bright light, it's easy to read (as in the attached photo)...." Read more

"...they use little battery, lasts a long time and so easy to read." Read more

"...I only gave it four stars for easy to read because the display does not light up." Read more

23 customers mention "Value for money"17 positive6 negative

Customers appreciate the humidity meter's value for money. They say it's simple, saves money, and is worth the price.

"...So, this is an inexpensive and convenient way to monitor my humidity and to know when to turn on my humidifier." Read more

"This looks just like the competitor and is cheaper; so I fell for it and bought two...." Read more

"...The humidity monitor is worthless. Waste of money." Read more

"...Saves money so I can use less expensive humidifiers without this feature. Proven to be very accurate. Only wish is that it had a light feature." Read more

12 customers mention "Size"12 positive0 negative

Customers appreciate the humidity meter's size. They find it portable and easy to read, with a large display and clear numbers. However, some customers report issues with the lack of back lighting, making it difficult to see the display clearly.

"...I like that the numbers are large and easy to read--and that the temp is a different size so you can easily glance at it and not confuse the two..." Read more

"...Overall, it's not too large, not too small, wipes down easily, is stable on its base, and has good battery life. I'm happy with this item" Read more

"Great little monitor you can take anywhere. Don’t be deceived (like I was) by the apparent size as depicted: it is only around 3” square...." Read more

"...No cords, compact and light, it's easy to read at a glance and move from room to room." Read more

10 customers mention "Look"10 positive0 negative

Customers like the product's appearance. They say it looks great, has an easy-to-read digital display, and is well-designed. The color options are also appreciated.

"These are much easier to read than our previous meters and look nice so I've added one to most of the rooms that I need to keep active moisture in..." Read more

"The Humidity Monitor is a very well designed instrument. The only question is how accurate are the readings...." Read more

"...I like the product. It is quite inexpensive but looks great!" Read more

"...So far so good and they look really cool! Great price too!" Read more

10 customers mention "Reliability"7 positive3 negative

Customers appreciate the humidity meter's reliability. They find it durable, with accurate readings, and simple to use. The meter uses little battery power and lasts for a long time.

"...they use little battery, lasts a long time and so easy to read." Read more

"This unit is high quality and nice looking so it can be placed anywhere. It has a simple easy to read face...." Read more

"...All of these units will eventual fail. They are not scientific instruments...." Read more

"Use it for my office. Accurate. Quality. Good price!" Read more

36 customers mention "Accuracy"24 positive12 negative

Customers have different views on the humidity meter's accuracy. Some find it easy to set up and read, providing accurate readings for an upstairs area. Others mention that it's not as accurate as other humidifier thermometers, giving inaccurate or strange readings.

"This is doing a great job for me. It's accurate..." Read more

"...There is empirical data that indicates that the cold and flue viruses physically cannot reproduce in your mucous membranes when the ambient humidity..." Read more

"...lower than the Extec, so I have to conclude that the Honeywell is extremely inaccurate, reading far too low...." Read more

"...as the humidity amounts you have been accustomed to and will help you accurately gauge...." Read more

Works like it should
5 out of 5 stars
Works like it should
We’ve bought a few of these and they are nice to have.I seem to give them to my adult children and then I don’t have one for our own house. In the winter our house gets dry and it’s nice to have a gauge that tells us exactly how dry it is so we can add moisture. Works really well and we’ve had them for quite a few years and haven’t had to change the batteries.
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Top reviews from the United States

  • Natalie
    5.0 out of 5 stars Works like it should
    Reviewed in the United States on January 27, 2025
    Color: BlackVerified Purchase
    We’ve bought a few of these and they are nice to have.I seem to give them to my adult children and then I don’t have one for our own house. In the winter our house gets dry and it’s nice to have a gauge that tells us exactly how dry it is so we can add moisture. Works really well and we’ve had them for quite a few years and haven’t had to change the batteries.
    Customer image
    Natalie
    5.0 out of 5 stars
    Works like it should

    Reviewed in the United States on January 27, 2025
    We’ve bought a few of these and they are nice to have.I seem to give them to my adult children and then I don’t have one for our own house. In the winter our house gets dry and it’s nice to have a gauge that tells us exactly how dry it is so we can add moisture. Works really well and we’ve had them for quite a few years and haven’t had to change the batteries.
    Images in this review
    Customer imageCustomer image
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  • carl albrecht
    5.0 out of 5 stars easy to read
    Reviewed in the United States on December 12, 2024
    Color: BlackVerified Purchase
    I use it mainly to monitor the humidity in my house.
    Helpful
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  • KR
    5.0 out of 5 stars Accurate and easy to read
    Reviewed in the United States on June 11, 2018
    Color: WhiteVerified Purchase
    Bought this to accompany our humidifier and have a better idea of the humidity levels in our bedroom to improve sleep. It works great. We had another brand that we used in a different part of our house, so I set them both up together to test if there was any difference. They both reported the exact same temp and humidity, so it made me feel confident that it is accurate. I like that the numbers are large and easy to read--and that the temp is a different size so you can easily glance at it and not confuse the two numbers. There is no backlight, so there's nothing to glow and keep you awake in a dark room--another plus!
    2 people found this helpful
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  • Mitchell M.
    4.0 out of 5 stars Accurate, simple, but a little hard to see in bright light.
    Reviewed in the United States on January 25, 2021
    Color: WhiteVerified Purchase
    This is doing a great job for me. It's accurate (I gauged it against another digital stand-alone unit, the digital readout on my Honeywell humidifier, and an old analog dial gauge), and it doesn't take up a lot of space. I've been using it non-stop for months now, and the battery is still going strong. The only thing I would improve on this item is the visibility. If it's under incandescent light, or 'side-lit' with my home's lighting, I can't see the LCD readout. So, that's limiting its placement for me. However, in bright light, it's easy to read (as in the attached photo). So, the addition of a 'tap top to see readout' like my other backlit unit would be greatly appreciated. Overall, it's not too large, not too small, wipes down easily, is stable on its base, and has good battery life. I'm happy with this item
    Customer image
    Mitchell M.
    4.0 out of 5 stars
    Accurate, simple, but a little hard to see in bright light.

    Reviewed in the United States on January 25, 2021
    This is doing a great job for me. It's accurate (I gauged it against another digital stand-alone unit, the digital readout on my Honeywell humidifier, and an old analog dial gauge), and it doesn't take up a lot of space. I've been using it non-stop for months now, and the battery is still going strong. The only thing I would improve on this item is the visibility. If it's under incandescent light, or 'side-lit' with my home's lighting, I can't see the LCD readout. So, that's limiting its placement for me. However, in bright light, it's easy to read (as in the attached photo). So, the addition of a 'tap top to see readout' like my other backlit unit would be greatly appreciated. Overall, it's not too large, not too small, wipes down easily, is stable on its base, and has good battery life. I'm happy with this item
    Images in this review
    Customer image
    3 people found this helpful
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  • lighten_up_already
    5.0 out of 5 stars Nice to have around when it gets really cold out and I crank up the heat.
    Reviewed in the United States on January 23, 2023
    Color: BlackVerified Purchase
    I never realized how dry air could get in the winter when it's cold and wet outside but I crank up the heat and the air can get really dry on the inside, and that can cause health problems. So, this is an inexpensive and convenient way to monitor my humidity and to know when to turn on my humidifier.
    One person found this helpful
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  • Bubbling
    5.0 out of 5 stars Good to have in the winter
    Reviewed in the United States on January 1, 2025
    Color: BlackVerified Purchase
    This monitor is good to have when the outdoor temperature dips below the freezing mark, with the air getting very cold and dry, which is followed by similar low humidity inside the home. I use it as a gauge for putting my humidifier into action, to keep the air comfortable and to prevent skin from getting painfully dry and cracked.
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  • Michael D. Hardie
    5.0 out of 5 stars love these little things
    Reviewed in the United States on February 21, 2024
    Color: BlackVerified Purchase
    I've got three of these, two white and one black. these are great little temperature and humidity indicators. they use little battery, lasts a long time and so easy to read.
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  • D. Ted Rogers III
    1.0 out of 5 stars Humidistat is not as accurate as the competitor
    Reviewed in the United States on December 12, 2024
    Color: BlackVerified Purchase
    This looks just like the competitor and is cheaper; so I fell for it and bought two. I use these things through out the house to maintain a humidity level at or above 43%. There is empirical data that indicates that the cold and flue viruses physically cannot reproduce in your mucous membranes when the ambient humidity is at or above 43%. My experience is that this is true as I have not had such an infection since I started being consistent(compulsive) about maintaining that level in my house over 6 years ago. Yes I know that, that is only one data point but I am not claiming that it proves any thing empirically; it only describes my experience.

    I have been using the competitors unit for years and they are "accurate" to with in 1% humidity across the board and they are in agreement at the same level with with the humidistats in my humidifiers which I believe are more accurate than these units are designed to be.

    All of these units will eventual fail. They are not scientific instruments. I use them in five different zones in the house and because they are in the vicinity of the 4 humidifiers that I run in the house during the winter time, when one fails it is obvious and easily tested. On the average the slightly more expensive competitors units are consistently more accurate. and these that I am reviewing are off by about 2% of relative humidity(RH). So I cannot "trust" them to let me know when the RH has dropped below 43%. Spend the extra 2 bucks. And buy the competitor's units. All of the units agree on temperature, but the temperature sensors are much simpler than the humidity sensors.
    3 people found this helpful
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Top reviews from other countries

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  • Valérie Légaré
    5.0 out of 5 stars Fonctionne très bien!😃
    Reviewed in Canada on January 11, 2025
    Color: BlackVerified Purchase
    Il y a quelques années j'en ai acheté un pour mon salon et je l'aime tellement que j'ai acheté mon deuxième pour ma chambre. Fonctionne très bien. Les batteries durent très longtemps. 😊
    Customer image
    Valérie Légaré
    5.0 out of 5 stars
    Fonctionne très bien!😃

    Reviewed in Canada on January 11, 2025
    Il y a quelques années j'en ai acheté un pour mon salon et je l'aime tellement que j'ai acheté mon deuxième pour ma chambre. Fonctionne très bien. Les batteries durent très longtemps. 😊
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  • Fausto Manuel Fuentes
    5.0 out of 5 stars Bueno
    Reviewed in Mexico on December 3, 2023
    Color: BlackVerified Purchase
    Funciona bien para lo indicado
    Report
  • Gord
    5.0 out of 5 stars good product and product support from seller!
    Reviewed in Canada on March 16, 2021
    Color: WhiteVerified Purchase
    I initially purchased this product however there was a calibration issue with the humidity monitor readings. I brought this to the suppliers attention and they immediately sent me another one. It has been working fine. Good service and I am pleased with the product. Thanks
    Report
  • Pastel Vortex
    5.0 out of 5 stars Works well, my second
    Reviewed in Canada on December 19, 2023
    Color: BlackVerified Purchase
    Works really well, as expected. More sensitive than you would expect for such a small unit. This is the second one I have purchased and the first still going strong after 5 years!
    Report
  • Diana G
    5.0 out of 5 stars Funciona muy bien
    Reviewed in Mexico on October 25, 2022
    Color: WhiteVerified Purchase
    Excelente funcionamiento, tengo meses con él
    Report