Honeywell
Honeywell HCM-710 Easy to Care
Take the HCM-350's mechanism, move the fill to the top, and make more of it dishwasher safe - that is the HCM-710 in one sentence, and "Easy to Care" is a fair name for it. The trade is capacity: a 1-gallon tank against the 350's 1.1, no UV, and no humidistat here either. At the 36 hours Honeywell claims it is moving two thirds of a gallon a day, which is a bedroom's worth; the 360 sq ft on the box would take closer to 1.5 gallons a day and drain the tank in about 16 hours.
The room-size claim, reconciled
165 sq ft supported · box says 360 sq ft
The box says 360 sq ft. By the winter load calculation this output supports about 165 sq ft — the claim is 2.2× the room the machine can hold.
Holding 360 sq ft takes about 1.46 gal/day, which drains this 1-gallon tank in roughly 16 hr — against the 36 hours Honeywell advertises, which is measured at the lowest setting.
What a year costs
HAC-504 wick at about $15, changed every one to two months in season. Electricity assumes the rated 30 W for 12 hours a day across a 150-day heating season at 16¢ per kilowatt-hour.
Specifications
A claim the maker makes
Honeywell says the wicking filter inhibits up to 99.99% of mould growth on the filter. We quote it rather than repeat it: this site has not tested it and neither has anyone independent.
Maintenance profile
- Top fill
- Yes
- Replaceable media
- Wick, replaced through the season
Facts, not a score. Which of these matter depends entirely on whether the unit ends up somewhere you will actually clean it.
Features
- Top-fill 1-gallon tank
- Dishwasher-safe tank and parts
- Three speeds
- Evaporative - no white dust
- HAC-504 wick filter
Pros
- The easiest unit here to actually clean - top fill plus dishwasher-safe parts means the weekly job takes a minute
- Evaporative and tap-water tolerant, so no dust and no distilled-water habit
- Shares the widely stocked HAC-504 wick with the HCM-350, so filters are never hard to find
Cons
- No humidistat, so it runs flat out until the tank empties
- One gallon is a small tank for a 360 sq ft claim - roughly 16 hours if it were actually holding that room
- No UV treatment, unlike the HCM-350 it otherwise resembles
- Wick cost is the same as the bigger model with less output to show for it
The pros and cons above are drawn from the maker’s documentation and published specifications. There is not yet a body of owner reports for this model that we have read.
What owners say
No owner discussion collected for the Honeywell HCM-710 Easy to Care yet. The pros and cons above come from the maker's documentation and published reviews, and this section will fill in when there is enough first-hand material to summarise honestly. We would rather leave it empty than invent it — how we compare explains why.
Honeywell HCM-710 Easy to Care, head to head
Looked at alongside it
More from Honeywell →
The long-running default recommendation in this category, and the arithmetic explains why. Honeywell publishes 2.3 gallons a day against a 500 sq ft claim - a room that actually needs about 2 gallons a day - making this one of the only portable humidifiers in the catalog whose coverage number the physics supports outright. It has been on sale since 2011 largely unchanged, the tank and several parts go in the dishwasher, and it evaporates rather than atomises, so there is no white dust. The costs are a wick habit, a fan you can hear, and no humidistat at all: three speeds, and you are the humidistat.
567 sq ft supported · box says 500 sq ft
Honeywell
Honeywell HEV620 Top Fill Tower
Honeywell's answer to the two complaints levelled at the HCM-350: no digital humidistat, and a tank you have to carry upside down to the sink. The HEV620 is a tower with a top-fill opening, a digital humidistat that will actually hold a target, and a timer. Its 300 sq ft claim against 2 gallons a day of output is the most conservative ratio in the entire catalog - the output supports closer to 490 - which is worth knowing if you have been talked out of it by a spec-sheet comparison against an ultrasonic promising 750.
493 sq ft supported · box says 300 sq ft
Honeywell's filter-free line exists because plenty of people would rather buy no consumables than buy the right ones. There is no wick and nothing to replace, which is genuinely the cheapest ownership in the catalog - and it is an ultrasonic with no demineralisation media, so on hard water the minerals that a wick would have caught end up on the furniture instead. A gallon tank and 24 hours works out to about a gallon a day, near enough to what its 300 sq ft claim needs, making this one of the more honest small ultrasonics on that particular number.
246 sq ft supported · box says 300 sq ft