- Runs up to 24 hours
- Manual humidistat
- Filter treated with antimicrobial protection and arm and hammer baking soda
- Uses (1) HWF75 D Replacement Filter
- 6 year limited warranty
Product Features |
Product Details
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Product Description
The Holmes HM3501-U Cool Mist Console Humidifier w/Humidistat has easy to operate controls that will aid in maintaining your desired comfort level. With a 2.27 gallon tank capacity and 4.3 gallon output, it’s ideal for the whole house. It has dual tanks for extended run time and designed with wheels for mobility.
Customer Reviews
Most Helpful Customer Reviews
38 of 39 people found the following review helpful
I've tried several models of humidifiers over the years. My first Holmes 3500 is still going strong after more than 10 years of use. I purchased a second one a few years ago largely to lengthen the time we go from full to empty and partially to help distribute the moisture better in a 2000 sq foot house. (Note that with forced hot air we probably don't need two humidifier locations since the air gets moved around anyway, but not having to refill every day when the temp drops to 10F here in MA is helpful.)
The only reason I don't give it a 5 is that the float valve that detects whether you're low on water didn't last. I don't really care about this since gently tilting the two water tanks when I walk past them tells me how much water is left and there for provides more advanced warning about running out of water. I live in a circa 1960 house so we're not exactly air tight (more frequent fillings for a particular humidity level).
The humidistat is consistent, we keep our humidity level lever at or slightly above the 1/3 mark unless someone is sick then we raise it to about 1/2. We don't know what % humidity this maps too, we just use subjective comfort levels to determine the setting.
One of the problems I've seen with other humidifier tanks, especially clear plastic models, is that they break too easily. I'm about to order (direct from Holmes) a replacement tank for $15. My previous humidifier company wanted $25 to replace a "designed to break" tank... I threw it out instead. Considering how many times I've dropped these tanks, the fact that this is my _first_ 3500 tank replacement is remarkable.
I didn't bother installing the wheels because I have no need to move the thing. When I'm about to clean it I just let it run dry to reduce weight and then carry it to the tub. I keep mine in a plastic shoe tray just in case it leaks, however I've never seen a drop of water in that 1/2" tall tray so that's just me being paranoid.
The only reason I don't give it a 5 is that the float valve that detects whether you're low on water didn't last. I don't really care about this since gently tilting the two water tanks when I walk past them tells me how much water is left and there for provides more advanced warning about running out of water. I live in a circa 1960 house so we're not exactly air tight (more frequent fillings for a particular humidity level).
The humidistat is consistent, we keep our humidity level lever at or slightly above the 1/3 mark unless someone is sick then we raise it to about 1/2. We don't know what % humidity this maps too, we just use subjective comfort levels to determine the setting.
One of the problems I've seen with other humidifier tanks, especially clear plastic models, is that they break too easily. I'm about to order (direct from Holmes) a replacement tank for $15. My previous humidifier company wanted $25 to replace a "designed to break" tank... I threw it out instead. Considering how many times I've dropped these tanks, the fact that this is my _first_ 3500 tank replacement is remarkable.
I didn't bother installing the wheels because I have no need to move the thing. When I'm about to clean it I just let it run dry to reduce weight and then carry it to the tub. I keep mine in a plastic shoe tray just in case it leaks, however I've never seen a drop of water in that 1/2" tall tray so that's just me being paranoid.
13 of 13 people found the following review helpful
I have had mine about 8 years now and love it. There are some things about it that take a little getting used to: the tanks hold a lot of water thus they are quite heavy, make sure you have a good grip on them before going from the sink to the unit. Don't over tighten the caps for the tanks, they easily cross thread also. If treated right this machine will last years. As far as how it works.... I keep mine on the 1st floor of a 2300 SQ FT home and run it on medium with the humidity control at about 3/4. I keep ceiling fans on upstairs and downstairs for airflow and my humidity levels stay in the comfort zone. Granted I have to refill the unit once daily, maybe every other day at times. I never get more than two days. I don't mind refilling because obviously the water is going into the air! I replace my filter at the start of every season. You can buy the filters off of Ebay cheap... a 6 pack is around $40. My unit did leak a little and I put some silicone sealant on it and that took care of it, but another reviewer had a great idea... put a plastic container lid under it just in case.
11 of 11 people found the following review helpful
We have forced air gas heat and without this Holmes humidifier we would be miserable during the winter months. When we first bought it (1999) we were in a three level townhouse at 1500 sq ft and now it's keeping 2 levels at about 2500 sq ft just as comfortable. We have hardwood floors so it has always been kept on a shoe/boot tray, just in case, but it has never leaked.
With kids and pets our filter is changed every 2-3 months and the base reservoir gets a cleaning half way and at the end of the season. Have used other types/styles of humidifiers and cleaning was always a pain but this one is much easier.
We keep our humidistat at around the 3/4 mark and our thermostat is set at 69 degrees during the day and 60 degrees at night. These settings keep us the most comfortable and maintain our humidity gauge readings (accuracy unknown) between 50-60%. We would buy this humidifier again without any hesitation!
With kids and pets our filter is changed every 2-3 months and the base reservoir gets a cleaning half way and at the end of the season. Have used other types/styles of humidifiers and cleaning was always a pain but this one is much easier.
We keep our humidistat at around the 3/4 mark and our thermostat is set at 69 degrees during the day and 60 degrees at night. These settings keep us the most comfortable and maintain our humidity gauge readings (accuracy unknown) between 50-60%. We would buy this humidifier again without any hesitation!
Most Recent Customer Reviews
Unit does its job surprisingly well, but there are problems.
I live in the desert area of the USA. Humidity is very low. I purchased this, hoping it would bring the humidity on one level of the house from the low 30% up to near 50%. Read more
Published 2 months ago by R. H. Tate
Does the job if you must use a portable unit.
Good points:
Pours out lots of moisture
Two water containers contain tons of water to get your home humidified, and I've only been refilling daily
Filter keeps... Read more
Pours out lots of moisture
Two water containers contain tons of water to get your home humidified, and I've only been refilling daily
Filter keeps... Read more
Published 2 months ago by Kari
A great humidifier
This is the 2nd Holmes HM3501-U I've owned, the first lasted 20 years, I'm very happy with this product. Read more
Published 3 months ago by Steven Davis
Holmes HM3501-U Humidifier
The price seemed right, and the design with vertical exhaustion by a powerful fan gives good distribution of wick-evaporated moisture. Read more
Published 3 months ago by Donald A. Schiemann
Badly designed, but puts out a lot of moisture
There is only one good thing to say about this humidifier: it puts out a ton of moisture! I have it in a large room and it can really make the room humid. Read more
Published 4 months ago by Casey Parsons
Reliable but a bit clumsy
We've had this Holmes unit for a couple of months now, and it has fended off the winter dryness just enough so we don't constantly get static shocks. Read more
Published 4 months ago by Birdo
Best of a bland bunch...
This is the 2nd Holmes humidifier I've owned. The first one lasted nearly 15 years, with the two storage tanks finally splitting apart as the plastic became more brittle with age. Read more
Published 4 months ago by Jay
humidifier
We replaced our 17 year old Holmes Humidifier with the same console style and model. It seems to be a bit louder than our original one however we're happy with it. Read more
Published 4 months ago by trophy
Works as advertised
Works just as advertised. I use a water and scale treatment chemical with every fill. I put a couple of cork cushions between the 2 bottles to prevent rattling. Read more
Published 4 months ago by Mlawrence
Good, not great. I would still recommend it.
Two factors led to me this model: high output rate, and low power draw. This unit will add several gallons of water per day to the air when its very dry. Read more
Published 4 months ago by Daniel J. Brown
