OLMO OW-P14AC230WF Review: 14,000 BTU Smart Wall AC
A 230V cooling-only wall unit rated 14,000 BTU with a built-in smart kit for app and voice control, a 49.5 dB listed sound level and R-32 refrigerant.
By Daniel Brooks
Updated October 19, 2026
The OLMO OW-P14AC230WF is a 14,000 BTU cooling-only wall unit from a brand better known for mini-split systems. It runs on 230 volts, uses R-32 refrigerant, and has a built-in smart kit, so you can control it from a phone or by voice as well as with the remote and front panel. OLMO lists a low 49.5 dB sound level, and the unit has 20 ratings on Amazon. It is one of the few large smart units in our cooling-only through-the-wall air conditioners category.
Our Verdict
For a large room with a 230 volt outlet, the OW-P14AC230WF combines big-room capacity with app and voice control, which most 14,000 BTU wall units do not offer. OLMO aims it at apartments, condos, offices, studios, garages and hotel rooms, and its remote adds Sleep mode, a timer and auto restart. OLMO also describes a self-evaporating system for condensate.
The listing is lighter on detail than LG or Keystone. OLMO gives a cooling range of 14,000 to 13,600 BTU but no square footage, and the sleeve is sold separately. Check the outlet before you order, as OLMO itself advises.
OLMO 14,000 BTU 230V Through-the-Wall Air
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Key Specifications
| Feature | Specification |
|---|---|
| Brand | OLMO |
| Model | OW-P14AC230WF |
| Type | Smart cooling-only through-the-wall air conditioner |
| Cooling Capacity | 14,000 / 13,600 BTU/h |
| Power | 230V, 1 phase, 60Hz |
| Efficiency | 9.5 (listed) |
| Refrigerant | R-32 |
| Noise Level | 49.5 dB (listed) |
| Controls | Push button panel with LED display, remote, smartphone app, voice |
| Dimensions | 24.21 x 14.53 x 20.28 inches (W x H x D) |
| Weight | 80 pounds |
| Wall Sleeve | Sold separately |
| Warranty | 1 year limited |
Cooling Capacity and Room Size
OLMO lists 14,000 and 13,600 BTU/h for this unit, which most likely reflects ratings at two supply voltages. OLMO does not publish a room size, so use the ENERGY STAR chart below as a guide. At 14,000 BTU, the chart points to rooms of roughly 550 to 700 square feet, such as a large living room, an open-plan apartment, a basement or a garage workshop.
If your room is at the smaller end of that range, a 12,000 BTU class unit may run more efficiently and remove humidity better, because it will run longer cycles.
ENERGY STAR publishes this general guide for sizing a room air conditioner by floor area:
| Room Size (sq ft) | Cooling Capacity (BTU/hr) |
|---|---|
| 100 to 150 | 5,000 |
| 150 to 250 | 6,000 |
| 250 to 300 | 7,000 |
| 300 to 350 | 8,000 |
| 350 to 400 | 9,000 |
| 400 to 450 | 10,000 |
| 450 to 550 | 12,000 |
| 550 to 700 | 14,000 |
| 700 to 1,000 | 18,000 |
Adjust for your room: reduce capacity by 10 percent for a heavily shaded room, increase it by 10 percent for a very sunny room, add 600 BTU for each regular occupant beyond two, and add 4,000 BTU if the unit cools a kitchen. Source: ENERGY STAR.
Smart Control
The built-in smart kit is the main reason to choose this OLMO over plainer rivals. OLMO says the unit can be controlled through the digital push button panel with an LED display, the included remote, or a compatible wireless smartphone device, and the listing names app and voice control. That lets you schedule cooling, adjust the temperature from another room, or start the unit on your way home.
The remote adds Sleep mode, a timer and auto restart after a power cut.
Power and Installation
This unit is designed for 230 volts, single phase, 60Hz. OLMO specifically asks buyers to verify they have the right receptacle before ordering. If the outlet beside your sleeve is a standard household type, you will need an electrician or a lower-voltage model instead.
The chassis is 24.21 inches wide, 14.53 inches tall and 20.28 inches deep, and it weighs 80 pounds, so plan for two people. The wall sleeve is not included with this listing. OLMO sells its own TTW sleeve separately, and a sleeve-included version of this unit is also available.
Noise
OLMO lists 49.5 dB, which is unusually low for a 14,000 BTU wall unit. Many large conventional wall units list figures well above that. If the figure holds up in practice, it makes this one of the better choices for a large bedroom or a living room where people watch TV.
Efficiency and Condensate
OLMO lists an efficiency figure of 9.5, which is typical for large conventional wall units. The description mentions a self-evaporating system, which uses condensate to help cool the condenser and reduces dripping. In very humid weather, any wall unit may still drip outside, so make sure the sleeve tilts slightly toward the exterior.
Who Is OLMO?
OLMO is better known for ductless and ducted mini-split systems, multi-position air handlers and other HVAC equipment than for room air conditioners. Its through-the-wall line borrows from that background, with R-32 refrigerant and a smart kit built in rather than sold as an add-on. The brand positions itself on affordability, and the wall units are usually priced below the big appliance names with similar capacity.
The flip side of a smaller brand is a thinner listing. Before buying, it is worth checking OLMO’s own installation guide for sleeve dimensions and electrical details, and keeping the receipt and model number handy for warranty claims.
Placement Tips for a Large Wall Unit
A 14,000 BTU unit moves a lot of air, so placement matters. Mount it where the airflow can travel across the longest part of the room, not straight into a wall or a tall bookcase. Keep sofas and beds a little away from the front grille so return air can reach the unit. In an open-plan space, point the louvers toward the area you use most in the afternoon, usually the living area rather than the kitchen.
Outside, leave clear space behind the rear grille. Shrubs, fences and stacked items within a short distance of the grille can trap hot exhaust air and make the compressor work harder.
Who It Suits Best
The OW-P14AC230WF suits large rooms with a 230 volt outlet where smart control and a low listed sound level matter. It is a good fit for apartments, condos, offices and studios. It is less suited to homes without a 230 volt receptacle, buyers who want a published square footage and detailed specs, or rooms that need heat.
Pros and Cons
| Pros | Cons |
|---|---|
| 14,000 BTU for large rooms | Needs a 230V receptacle |
| Built-in smart kit, app and voice | No published room size |
| 49.5 dB listed sound level | Sleeve sold separately |
| Sleep mode, timer and auto restart | Heavy at 80 pounds |
| Self-evaporating system | 1 year limited warranty |
Who Should Buy It
| Who Should Buy It? | Who Should Look Elsewhere? |
|---|---|
| Smart home users with large rooms | Homes with only standard outlets |
| Apartments with a 230V sleeve outlet | Small bedrooms |
| Noise-sensitive living rooms | Buyers who want detailed specs |
| Offices and studios | Rooms that need heat |
For more options, see our picks for the best 14,000 BTU through-the-wall air conditioners and the best smart through-the-wall air conditioners.
Final Verdict
The OLMO OW-P14AC230WF is a rare combination of 14,000 BTU wall cooling, smart control and a low listed sound level. If you have a 230 volt outlet and a large room, it is a strong alternative to the usual big-brand wall units. You can check the current price and details for the OLMO 14,000 BTU 230V Through-the-Wall Air Conditioner.
Frequently Asked Questions
Does the OLMO OW-P14AC230WF have Wi-Fi?
Yes. It has a built-in smart kit for smartphone and voice control, plus a remote and front panel.
What outlet does it need?
It is designed for 230V, single phase, 60Hz. OLMO asks buyers to verify the receptacle before ordering.
Is the wall sleeve included?
Not with this listing. The sleeve is sold separately.
How loud is it?
OLMO lists 49.5 dB.
About the author
Daniel Brooks is a home cooling editor at WikiCooling, covering window, portable, through-the-wall and mini-split air conditioners, fans, and dehumidifiers. He researches cooling capacity, energy efficiency, noise levels, installation requirements, and buyer feedback to help homeowners choose the right unit for their room size, climate, and budget.