Honeywell ThermaWave 6 Ceramic Space Heater HCE870 Series review

The Honeywell ThermaWave 6 HCE870 is a floor-oriented ceramic heater for a shopper who wants fan-only airflow, a manual air-direction louver, thermostat presets and a selectable auto-off timer in one unit. The U.S. HCE870 family is shown in black HCE870B and white HCE870W on the manufacturer’s instructions; their shared 870-series manual covers the same operating controls. The useful distinction is digital temperature selection and a timer, not a promise that the heater will warm a particular room size. Honeywell gives no numeric coverage area in the reviewed page and manual.

Separate heat modes from temperature presets

The Settings button selects Fan Only, Low heat or High heat. Low is 900 watts and High is 1,500 watts; fan-only uses very little power but does not heat. The 120-volt manual lists 12.5 amps at maximum. The separate adjustable thermostat button offers four preset targets—65, 70, 75 or 80 degrees Fahrenheit. The manual says automatic temperature control operates on High until the selected target is reached, then the fan runs for a 60-second cool-down and stops until the room drops below the target.

That distinction prevents a common misunderstanding: four temperature targets are not four continuous power levels. There are two selectable heat levels, plus fan-only; the thermostat has four room-temperature presets. If you specifically need the thermostat to use a lower heating stage automatically, the HCE870’s documented behavior does not meet that need. Its louver can be adjusted to direct the warm air, but the instructions do not give a louver angle or an oscillation sweep.

A timer helps end a session, not supervise it

The timer button selects two, four or eight hours. The owner’s manual says the eight-hour auto-off is the default when the heater is powered on. That is more useful for a planned, attended heating session than the HHF250’s manual thermostat alone, but it is still only an automatic shutoff. The manual explicitly says not to leave the unit unattended; a timer does not change that rule. The 60-second fan run-on after switching off is a cooling step for the heating element, not an extra period of heat.

Before use, the main body must be fitted to the included base with a no-tool snap assembly. Honeywell recommends floor placement for room convection. The instructions require a firm, level, open location and at least three feet from walls or combustible material; they caution against unstable surfaces such as bedding or deep carpeting. This is a portable floor unit, not a wall heater or a tabletop space-saver.

Placement, safety and the unresolved size conflict

The page lists dimensions of 18.11 inches wide, 18.54 high and 7.75 long. The manual gives an assembled 870-series size of 17.8 wide, 18.31 high and 7.75 long. Because the width and height differ, I leave numeric body dimensions unknown instead of presenting a false fit guarantee. The three-foot clearance is an operating requirement and cannot be subtracted from the unit’s footprint or treated as a substitute for measuring your intended location.

The exact manual documents a 360-degree tip-over switch, two high-temperature safety sensors, thermal-insulated wiring, reinforced wire connections and a cool-touch housing and handle. It also directs users to plug the heater into a wall outlet, not an extension cord or power strip; do not use it outdoors, in a bathroom or laundry area, near a water container, or unattended. Keep combustible objects at least three feet away. These restrictions apply even when using the timer or thermostat.

Which Honeywell model matches the routine?

Consider the HCE870 if four preset room-temperature targets and a two-, four- or eight-hour auto-off are more useful than a moving head. The HHF550B instead combines 750/1,500-watt settings with a three-angle pivot and oscillation, but its HHF550 instructions do not document the HCE870’s digital thermostat or timer. The HHF250 has a lower 550/1,100-watt pair and a mechanical thermostat, plus upright-or-side placement, but no documented countdown. Those differences may matter more than a generic claim that one heater is “stronger.”

Choose another configuration if a lower-stage thermostat is essential, you need a documented oscillation arc, or you need body dimensions that fit a tight clearance. The HCE870 carries a three-year limited warranty. The black and white manual-cover images below are manufacturer illustrations, not evidence of a photograph or of different hardware; review the official HCE870 product page and its linked 870-series owner manual for current configurations and instructions.