Holmes HM3501-U Cool Mist Console Humidifier with humidistat

by Holmes

Product Features

• 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 Details

• Product Dimensions: 21.3 x 14 x 19.2 inches ; 17.1 pounds
• Shipping Weight: 17.4 pounds (View shipping rates and policies)
• Shipping: Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
• Shipping Advisory: This item must be shipped separately from other items in your order. Additional shipping charges will not apply.
• ASIN: B0032KZIWU
• Item model number: HM3501-U
• Average Customer Review: 4.0 out of 5 stars  See all reviews (22 customer reviews)
• Amazon Best Sellers Rank: #21,793 in Home & Kitchen (See Top 100 in Home & Kitchen)
  • #98 in Home & Kitchen > Heating, Cooling & Air Quality > Humidifiers & Vaporizers

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:

4.0 out of 5 stars My Two Holmes HW3500 Humidifiers, December 20, 2009

By 

Jeffrey C. Vandegrift (Acton, MA United States) - See all my reviews
(REAL NAME)   

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.

13 of 13 people found the following review helpful:

5.0 out of 5 stars Great Product., November 27, 2010

By 

W. Pryor - See all my reviews
(REAL NAME)   

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:

5.0 out of 5 stars 12 Years and Still Keeping Us Comfortable, January 15, 2011

By 

CC (Virginia) - See all my reviews

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!