Honeywell HCM-350 Germ Free Cool Mist vs Honeywell HCM-710 Easy to Care
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In short: The Honeywell HCM-710 Easy to Care costs $15 less; the Honeywell HCM-350 Germ Free Cool Mist genuinely holds a larger room (493 sq ft against 165 sq ft).
| Spec | Honeywell HCM-350 Germ Free Cool Mist | Honeywell HCM-710 Easy to Care |
|---|---|---|
| Approx. price | ~$90 | ~$75 |
| Type | Evaporative | Evaporative |
| Mist | cool | cool |
| Rated output | 2 gal/day | 0.67 gal/day |
| Output standard | Maker's published output rate | Computed from the tank and the maker's longest runtime claim — the lowest setting |
| Honest room size | 493 sq ft | 165 sq ft |
| Claimed coverage | 500 sq ft | 360 sq ft |
| Claim vs physics | 1.01× | 2.18× |
| Tank size | 1.1 gal | 1 gal |
| Runtime at the claimed room | 13 hr | 16 hr |
| Real runtime at full output | 13 hr | — |
| Yearly running cost | ~$47 | ~$47 |
| Replaceable media | Wick, replaced through the season | Wick, replaced through the season |
| White dust risk | No | No |
| Humidistat | No | No |
| Noise on low | — | — |
| Top fill | No | Yes |
| Dishwasher-safe tank | Yes | No |
| App control | No | No |
| Power | 60 W | 60 W |
Highlighted cells are the better number in that row, and only where a direction is unambiguous — more output and more supported room, less noise, cost and price. Honest room size and runtime are computed from each maker’s own published figures; here is the calculation.
Pros and cons
Honeywell HCM-350 Germ Free Cool Mist
- One of very few portables whose stated room size stands up to the output it publishes
- The tank and tray are top-rack dishwasher safe, which makes the weekly clean genuinely easy
- Evaporative, so tap water is fine and nothing settles on furniture
- Honeywell still sells the HAC-504 wick, so a unit already in the house stays usable after the model's discontinuation
- No humidistat of any kind - it runs at the speed you set until the tank empties
- The fan is audible at every speed; light sleepers run it on low or in another room
- Wick filters are around $15 and need changing every month or two in hard water, which is the real cost of ownership
- Bottom-fill tank has to be carried to the sink and inverted
- The UV claim is Honeywell's, made for the water in the reservoir, not for the air in the room
Honeywell HCM-710 Easy to Care
- Filling takes no lifting at all - water goes straight into a funnel on top, with no tank to carry to the sink
- 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
- 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