Hltzyzbl Cold And Hot Air Air Conditioner 2 In 1 Wall Mounted Mobile Air Electric Fan Air Conditioner For Bedroom Mini Split AC/Heating System, Portable, Ductless, With Remote, For Home Office

I tested the Hltzyzbl 2‑in‑1 unit in a small home office during a stretch of late‑summer heat and a couple of cool mornings. On paper, it promises a ductless, wall‑mountable “mini‑split” experience with both cooling and heating and a remote for convenience. In practice, it behaves very differently. If you’re expecting meaningful air conditioning, this is not that device.

Design, build, and what’s in the box

The unit is compact and lightweight, finished in glossy black plastic. It’s slim enough to sit on a shelf or mount above a desk without dominating the wall. A simple remote is included, with the usual power, mode, temperature, and fan controls.

Build quality feels budget. The casing flexes under light pressure and the panel seams don’t line up perfectly. My sample arrived with a hairline crack on the rear housing. Nothing fell apart during testing, but it didn’t inspire confidence. The vent is fixed (no motorized swing), and the rear intake relies on room air circulation.

A practical note: the power cord is very short—roughly a couple of feet—so you’ll need an outlet very close by. The documentation discourages extension cords, which further limits placement options.

Setup and mounting

You can use the Hltzyzbl on a flat surface or mount it to a wall. I tried both. Surface use is straightforward: plug in, point the vent where you want air, and go. Wall mounting is less convincing. Without much stand‑off from the wall, the intake sits close to the surface, which can hamper airflow. In my tests, the unit actually performed worse when mounted—airflow felt more restricted, and the noise had more of a chuffing character, likely from recirculating its own air.

Given the light weight, the mount is easy to handle, but I’d still recommend anchoring into studs or using proper wall anchors if you must mount it.

Controls and usability

Controls are simple: modes for “cool,” “heat,” and “fan,” a set temperature display, and basic fan speed selection. The remote works line‑of‑sight and generally responded within a second or two. There’s no app control and no scheduling beyond a basic timer.

A couple of usability quirks stood out:
- The temperature you set and the air the unit delivers don’t correlate in the way you’d expect. Setting a low temperature doesn’t trigger actual cooling.
- The thermostat seems approximate; the unit cycles in ways that don’t reflect room temperature changes accurately.

Cooling performance: not an air conditioner

The biggest gap between expectation and reality is cooling. There is no outdoor condenser, no exhaust hose, and no refrigerant circuit. Without a way to move heat out of the room, true air conditioning isn’t possible. What the Hltzyzbl calls “cool” mode functions as a fan—air moves, but temperature doesn’t drop.

In a 120‑square‑foot office at 78°F, I ran “cool” mode for over an hour. The room temperature didn’t budge, and the air from the vent remained at or just above room temperature. If you’re hoping to take the edge off on a hot day, this won’t do it. At best, you get a gentle breeze.

If you need actual cooling in a ductless form factor, you’ll want either:
- A real mini‑split system (indoor head plus outdoor compressor), or
- A portable AC with an exhaust hose to a window, which physically expels heat outside.

Heating performance: works like a basic space heater

Switching to “heat” mode, the Hltzyzbl behaved like a modest ceramic space heater. Near a desk, the warm airflow felt comfortable within a few minutes. In my small office, it raised the immediate area’s comfort level, though it took much longer to warm the entire room. That’s consistent with what you’d expect from a compact heater with a small fan—good for spot heating, less so for whole‑room changes.

Two caveats:
- The thermostat accuracy is questionable. The display lets you dial down to a low setpoint, but the unit still pushes warm air whenever “heat” is selected. Treat it like a heater with a rough set‑and‑forget dial, not a precision thermostat.
- On first use, I noticed a hot, slightly acrid odor. Some heaters burn off manufacturing residues initially, but the smell here was strong enough that I turned it off and aired out the room. It diminished on subsequent uses but didn’t fully disappear during my test period. If you’re sensitive to odors, that’s worth noting.

Airflow and noise

Airflow is gentle even at the highest fan setting. For a heater, that can be fine—less draft, more localized warmth. As a fan, it’s underwhelming.

Noise sits in the “small desk fan” territory. It’s not offensively loud but always present: a steady hum with a bit of whoosh. Mounted on the wall, vibration and airflow restriction made it sound harsher than when placed on a shelf.

Power and energy considerations

Expect power draw comparable to a typical small space heater while heating. There’s no energy efficiency magic here—no heat pump, no inverter. In “cool” mode, it’s just a fan, so draw is modest, but again, you’re not getting cooling.

Because of the short cord and heater‑level draw, it’s best to use a dedicated outlet and keep the cord fully visible and uncoiled. Give the unit plenty of clearance around the intake and outlet.

Safety and build observations

• The housing gets warm to the touch near the outlet during extended heating, though not dangerously hot in my tests.
• The initial hot smell is concerning; if it persists, discontinue use.
• There’s no visible tip‑over switch (more common on floor heaters). If you plan to use it portably, keep it on a stable, hard surface away from curtains or paper.
• The lightweight plastic and my unit’s cosmetic crack don’t inspire long‑term durability confidence.

Who it’s for (and who it’s not for)

Consider the Hltzyzbl if:
- You want a wall‑mountable, small heater with a remote for spot warmth near a desk or bed.
- Your expectations are strictly heating and light air circulation, not actual cooling.

Skip it if:
- You need real cooling. This unit cannot reduce room temperature.
- You want a single device to handle seasonal swings. Pairing a proper portable AC (with hose) for summer and a basic ceramic heater for winter will outperform this in every way.
- You value robust build quality. There are sturdier heaters in the same price range with better safety certifications and controls.

Alternatives worth considering

• For cooling: a portable single‑hose AC (ideally dual‑hose for efficiency) or a professionally installed ductless mini‑split. Even an inexpensive window AC will do far more to cool a room than a fan labeled as “cool.”
• For heating: a compact ceramic space heater from a reputable brand. Many offer tip‑over protection, overheat shutoff, better thermostats, and quieter fans—often at a lower price.
• For year‑round comfort: a true heat‑pump mini‑split. It costs more upfront but legitimately both cools and heats with high efficiency.

Practical tips if you already bought one

• Use it as a heater on a sturdy surface with plenty of clearance. Avoid wall mounting if you notice airflow restriction or extra noise.
• Don’t cover or drape anything over it; keep paper and fabrics at least a couple of feet away from the outlet.
• If you smell burning beyond an initial brief burn‑off, turn it off and unplug it.
• Place it close to where you sit; treat it as a personal heater rather than a whole‑room solution.
• Ensure the outlet is close by and avoid extension cords, per the manual’s guidance.

Final recommendation

I wouldn’t recommend the Hltzyzbl 2‑in‑1. As a “cooling” solution, it simply doesn’t deliver—there’s no mechanism to remove heat from a room, so you’re left with a fan that moves warm air around. As a heater, it works, but only at the level of an inexpensive ceramic space heater, and the compromises are hard to ignore: flimsy construction, a very short power cord, questionable thermostat behavior, and an unpleasant hot smell in use.

If you need heat, you can get a safer, sturdier, and more effective heater for less. If you need cooling, look to a true portable AC, window unit, or real mini‑split. This product tries to cover both bases and ends up missing the mark on the one that matters most in hot weather.