Honeywell Humidifiers: Easy-Care Picks for Cleaner Mist
As Amazon Associates, we earn from qualifying purchases. This means we may receive a small commission at no extra cost to you if you click through and make a purchase.
Honeywell has been making home comfort products for a long time, and its humidifiers are popular because they are simple to run and simple to clean. Many shoppers search for a “germ free” Honeywell humidifier, but none of the listings below make that claim. What they do offer are designs that make keeping the machine fresh easier: filter-free tanks with wide openings, dishwasher-safe parts, UV technology to help treat water, and warm mist models that heat water before it leaves the unit.
The six products here split into cool mist and warm mist machines, plus one pack of replacement filters. The cool mist models are the evaporative HCM350B and the filter-free HUL545B and HUL535B; the warm mist models are the filter-free Easy-to-Care unit and the larger HWM440; and the filters are a third-party Colorfullife pack for Honeywell’s HAC-504 style humidifiers.
Honeywell Humidifiers Compared
| Model | Mist type | Filter | Tank | Listed runtime |
|---|---|---|---|---|
| Honeywell Cool Moisture Humidifier (HCM350B) | Cool, evaporative, invisible | Wicking Filter A | 1.1 gallons | Up to 24 hours |
| Honeywell Easy-to-Care Filter Free Warm Mist | Warm mist | Filter-free | 1.5 gallons | 24 hours |
| Honeywell Ultra Comfort Cool Mist (HUL545B) | Cool, visible | No filter | 1 gallon | Up to 36 hours |
| Honeywell 1.5 gal. 500 sq ft (HWM440) | Warm mist | Filter-free | 1.5 gallons | Not listed |
| Honeywell HUL535B Cool Mist | Cool, visible, ultrasonic | Filter-free | 1 gallon | Up to 24 hours |
| Humidifier Replacement Filters A (Colorfullife) | Not applicable | 4 replacement filters | Not applicable | Replace every 2-3 months suggested |
Honeywell Cool Moisture Humidifiers for Bedroom for Invisible Moisture
Honeywell
Honeywell Cool Moisture Humidifiers for Bedroom, Medium Rooms, 1.1 Gallon, Invisible Moisture Humidifier for Baby, Kids, Quiet, Easy to Clean, UV Technology, Black, HCM350B
Price and specifications are read from the Amazon product page and can change.
Honeywell Cool Moisture Humidifiers for Bedroom
Best for: Bedrooms wanting invisible moisture
Pros
- UV technology plus wicking filter
- Dishwasher-safe water parts
- 1 gallon tank, 24 hours
Cons
- Needs Filter A replacements
- Heaviest here at 9 pounds
The Honeywell Cool Moisture Humidifiers for Bedroom listing covers the HCM350B, an evaporative humidifier. “Evaporative” means a fan blows air through a wet wicking filter, and the water evaporates into the room as invisible moisture instead of a visible cloud. This model also uses UV technology, which the listing says works with the filter to help treat the water and capture minerals for a cleaner mist. It holds the humidity level you choose and makes a soft, fan-like sound some people find restful at night.
For easy care, all parts that touch water are dishwasher safe, which is rare and very handy. The 1.1 gallon, self-standing tank provides up to 24 hours of runtime, and it measures 9.37 x 17.48 x 11.85 inches and weighs 9 pounds. Honeywell recommends using only its genuine Replacement Wicking Filter A for best performance. The spec sheet lists 1500 watts, a figure that seems high for this kind of machine, so treat it with caution.
This suits bedrooms and kids’ rooms where you want moisture without a damp cloud landing on furniture. If you would rather never buy filters, the filter-free models below are simpler to own.
Honeywell Easy-to-Care Filter Free Warm Mist for Set-and-Forget Comfort
Honeywell
Honeywell Easy-to-Care Filter Free Warm Mist Humidifier, Black
Price and specifications are read from the Amazon product page and can change.
Honeywell Easy-to-Care Filter Free Warm Mist
Best for: Filter-free warm mist with humidity control
Pros
- Programmable humidistat, 5 settings
- Steam in under 1 minute
- Top-fill tank, essential oil use
Cons
- Spec sheet lists wick filter, confusingly
- Warm units need careful placement
The Honeywell Easy-to-Care Filter Free Warm Mist Humidifier heats water to produce warm steam, which the listing says begins in less than 1 minute. Its standout is a programmable humidistat with 5 humidity settings. A humidistat works like a thermostat for moisture: it switches the humidifier on and off to hold the level you set. There are also 2 comfort settings and auto shut-off when the tank is empty.
The design is filter-free, so there are no filters to replace, and a top-fill opening makes filling and cleaning easier. It has an essential oil feature for oils or liquid inhalants (not included). The tank holds 1.5 gallons with up to 24 hours of runtime, and it is sized for medium rooms. One oddity: the spec sheet lists the filter type as wick, which conflicts with the filter-free title, so go by the feature text.
Choose this if you prefer warm mist and want the humidifier to manage the room level itself. Warm mist units heat water, so place them out of reach of small children and pets. For a closer look at warm mist machines, see our Honeywell steam humidifier guide.
Honeywell Ultra Comfort Cool Mist Humidifier for Long Overnight Runs
Honeywell
Honeywell Ultra Comfort Cool Mist Humidifier, HUL545B
Price and specifications are read from the Amazon product page and can change.
Honeywell Ultra Comfort Cool Mist Humidifier
Best for: Nightstands needing long quiet runs
Pros
- Up to 36 hour runtime
- No filter to change
- Dual direction mist outlet
Cons
- Visible mist can dampen surfaces
- Designed for smaller spaces
The Honeywell Ultra Comfort Cool Mist Humidifier (HUL545B) is a compact, filter-free cool mist model that produces visible mist. It offers ultra-quiet operation, adjustable mist control, a dual direction mist outlet so you can aim the mist two ways, and an essential oil tray.
Its 1 gallon tank gives up to 36 hours of runtime, the longest in this guide, and it has auto shut-off. A wide tank opening makes cleaning and refilling easier. At 4 pounds, it fits on a desk or nightstand. The listing describes it for small rooms in one place and medium-sized rooms in another, so it is best viewed as a bedroom-sized unit.
This suits a nursery or bedroom where you want mist all night without refilling. Compared with the HUL535B below, it adds the essential oil tray, dual outlet and longer runtime.
Honeywell 1.5 gal. 500 sq ft Warm Mist for Larger Rooms
Honeywell
Honeywell 1.5 gal. 500 sq ft Filter Free Warm Mist Humidifier with Essential Oil Cup, Black, HWM440
Price and specifications are read from the Amazon product page and can change.
Honeywell 1.5 gal. 500 sq ft
Best for: Larger rooms up to 500 sq ft
Pros
- 5 gallon tank
- Filter-free warm mist
- Essential oil cup
Cons
- Very limited listing details
- Runtime not listed
The Honeywell 1.5 gal. 500 sq ft Filter Free Warm Mist Humidifier (HWM440) is described for large rooms up to 500 square feet, and its title names an essential oil cup. Like the Easy-to-Care model, it is filter-free with a top-fill tank that the description says makes refilling and cleaning easy.
The listing is short on details. It does not specify runtime, humidity settings, dimensions or whether it has a humidistat. What it does give is the 1.5 gallon capacity, black color and suggested rooms: bedrooms and nurseries.
Consider this if you need warm mist for a larger space. If you value a programmable humidistat, the Easy-to-Care model lists one clearly.
Honeywell HUL535B Cool Mist Humidifier Black for Small Spaces
Best for: Compact cool mist for a desk
Pros
- Filter-free cool mist
- Auto shut-off
- Small 8.5 inch footprint
Cons
- Shorter 24 hour runtime than HUL545B
- Spec sheet lists wick filter, confusingly
The Honeywell HUL535B Cool Mist Humidifier Black is a small, filter-free cool mist model with variable settings, a direction mist outlet and auto shut-off. It produces a fine, visible mist and runs up to 24 hours on its 1 gallon tank. The spec sheet names ultrasonic operation, which generally means a vibrating plate turns water into a fine mist without heat.
At 8.5 x 8.5 x 13.5 inches and 3.8 pounds, it is easy to place on a desk or nightstand. Like another model here, its spec sheet lists a wick filter despite being sold as filter-free; the title and features consistently say filter-free.
This is a solid first humidifier for a single bedroom or office. The HUL545B gives way to it only on size; if you want longer runtime and an oil tray, pick the HUL545B.
Humidifier Replacement Filters A for Honeywell for HCM Owners
Best for: HCM-350 owners restocking filters
Pros
- Four filters per pack
- Wide list of compatible models
- Honeycomb multi-layer design
Cons
- Third-party, not Honeywell
- Honeywell advises genuine filters
The Humidifier Replacement Filters A for Honeywell humidifiers are made by Colorfullife, not Honeywell. The pack includes 4 filters designed to replace the HAC-504 style Filter A, and the listing names many compatible models, including the HCM-350B covered above, plus HCM-300, HCM-500, HCM-600, HEV-300, HCM-700, HCM-1000 and HCM-2000 series units.
The listing describes a multi-layer honeycomb design made of rigid absorbent paper to reduce sagging when wet. It recommends replacing the filter every 2-3 months, soaking a new filter in cool water first, flipping it daily and using distilled water, since hard water can make filters yellow early. Keep in mind Honeywell’s own HCM350B listing says compatible replacements are not guaranteed to match genuine filter performance.
This suits owners of an evaporative Honeywell who want a stock of spares. Honeywell also sells filters for other machines, which we cover in our Honeywell filters for air purifier guide.
How to Choose the Right Honeywell Humidifier
Cool mist or warm mist. Cool mist models (HCM350B, HUL545B, HUL535B) do not heat water and are generally a common choice for kids’ rooms. Warm mist models (Easy-to-Care, HWM440) boil water into steam, which some people find cozy in winter, but they need careful placement.
Filter or filter-free. The HCM350B uses a wicking filter that captures minerals but needs replacing. Four models are filter-free, so there is nothing to buy later, though regular cleaning still matters.
Keeping it fresh. Whatever you choose, empty and rinse the tank often, clean it as the manual directs and use the recommended water. The HCM350B’s dishwasher-safe parts and the top-fill tanks on the warm mist models make that routine easier.
Room size and runtime. For big rooms, the HWM440 lists 500 square feet. For long nights, the HUL545B lists 36 hours.
FAQ
Is any Honeywell humidifier here germ free?
None of these listings claim to be germ free. The HCM350B uses UV technology that the listing says helps treat water and capture minerals, and the filter-free models are designed to be easy to clean.
What is the difference between the HUL535B and HUL545B?
Both are filter-free cool mist models with 1 gallon tanks. The HUL545B adds an essential oil tray, dual direction outlet and up to 36 hours of runtime versus 24 hours.
Do I need to buy filters for filter-free models?
No. The filters in this guide fit evaporative models like the HCM350B.
Are the Colorfullife filters made by Honeywell?
No, they are third-party replacements. Honeywell recommends its genuine Filter A for best performance.
Which Honeywell humidifier is easiest to clean?
The HCM350B has dishwasher-safe parts that touch water, while the filter-free models have wide or top-fill tank openings for easy rinsing.
