5 Best 14,000 BTU Through-the-Wall Air Conditioners of 2026
We compared five 14,000 BTU cooling-only wall air conditioners on room coverage, plug type, noise, smart features and sleeve fit.
By Daniel Brooks
Updated October 19, 2026
A 14,000 BTU through-the-wall air conditioner is the largest size most homes need from a single wall unit. It suits big living rooms, open-plan apartments, family rooms with a dining area, basements and garages of up to about 700 square feet. Every unit at this size needs a 230 volt receptacle. Our list of the best 14,000 BTU through-the-wall air conditioners compares five cooling-only models on room coverage, plug type, noise, smart features and sleeve fit. To browse every model we cover, visit our Cooling-Only Through-the-Wall Air Conditioners page.
We kept this list to five 14,000 BTU through-the-wall air conditioners because these are the cooling-only models at this size with solid listings. Heat and cool combination units are covered separately.
All Products Compared
| Product | Best For | Room Size | Power | Noise | Notable Feature |
|---|---|---|---|---|---|
| LG 14,000 BTU Through the Wall Air Conditioner | Overall | Up to 700 sq ft | 230/208V, 1500 watts | 58 dB | Auto Cool, universal 24 inch chassis |
| Keystone 14,000 BTU Wall Mounted Air Conditioner | Even temperatures | Up to 700 sq ft | 230V, 1515 watts | 61.5 dB | Remote reads room temperature |
| TCL 14,000 BTU 230V Smart Through-the-Wall Air Conditioner | Smart and quiet | Up to 700 sq ft | 230V, 1460 watts | 50 dB | App, Alexa, Google Assistant |
| OLMO 14,000 BTU 230V Through-the-Wall Air Conditioner | Quietest listed | Large rooms | 230V | 49.5 dB | Built-in smart kit |
| Frigidaire 14,000 BTU Wall Air Conditioner | Air quality | Large rooms | 230V, 1400 watts | 61 dB | Air ionizer |
| Award | Product | WikiCooling Score About WikiCooling ScoreThe WikiCooling Score is our own rating from 0 to 10, based on the criteria described on our How We Review page. It reflects research, not laboratory measurement, and is never influenced by manufacturers, retailers, or affiliate commissions. Learn more › | |
|---|---|---|---|
| Best Overall |
LG 14,000 BTU Through the Wall Air Conditioner
|
7.3/10 | Buy |
Keystone 14,000 BTU Wall Mounted Air Conditioner
|
Buy | ||
| Best Premium |
TCL 14,000 BTU 230V Smart Through-the-Wall Air
|
6.8/10 | Buy |
OLMO 14,000 BTU 230V Through-the-Wall Air
|
Buy | ||
| Best Budget |
Frigidaire 14,000 BTU Wall Air Conditioner
|
7.2/10 | Buy |
LG 14,000 BTU Through the Wall Air Conditioner
This LG through-the-wall air conditioner delivers 14,000 BTUs of cooling for rooms up to 700 sq. ft. It offers three cooling and fan speeds, 4-way air deflection, and a 24-hour timer for energy savings. Suitable for medium to large rooms in apartments or homes.
Pros
- Powerful 14,000 BTU cooling
- Covers up to 700 sq. ft.
- Multiple fan speeds and Auto Cool
- 4-way air deflection
- Auto restart feature
Cons
- Requires 230/208V dedicated outlet
- Wall sleeve sold separately
- No inverter for variable speed
Keystone 14,000 BTU Wall Mounted Air Conditioner
A 14,000 BTU wall-mounted unit that cools rooms up to 700 square feet, with a built-in dehumidifier that removes 2.5 pints of moisture per hour. The remote control includes a thermostat that detects the user's position for personalized comfort. Suitable for large apartments, living rooms, or garages where a through-the-wall installation is preferred.
Pros
- Powerful cooling for large spaces
- Built-in dehumidifier
- Smart remote with position-sensing thermostat
- Energy-saving modes
- Washable filter with alert
Cons
- Noise level of 61.5 dB may be noticeable
- Heavy at 78.3 pounds, requires two-person installation
- Some reports of compressor failure after one year
TCL 14,000 BTU 230V Smart Through-the-Wall Air
Stay cool and in control with the powerful cooling capacity of the TCL 14,000 BTU Through-the-Wall Air Conditioner. This smart wall ac unit cools rooms up to 700 sq. ft., and with its included remote and the TCL Home mobile app, you can set the perfect temperature from the comfort of your couch. You can also pair it with Alexa or Google Assistant-enabled devices so you can use simple voice commands to adjust its settings without lifting a finger. This wall unit helps keep your energy bill low with Sleep and Eco modes that prioritize energy efficiency, and it includes several fan speeds (low, medium, high, and auto in cool mode) along with 4-way ventilation and multidirectional louvers to ensure even and consistent cooling across your space. Its washable and reusable filter helps protect the life of your AC while also reducing large airborne particles like dust and pet hair. The unit comes with guided instructions so you don’t have to be an expert technician to set up your through-the-wall AC. Once set up, the LED display makes controlling your wall AC simple. It’s time to enjoy your home the way it was meant to be. Sleeve not included. Compatible sleeve dimensions: 26”x20”x15.57.
OLMO 14,000 BTU 230V Through-the-Wall Air
This through-the-wall air conditioner from OLMO delivers 14,000 BTU of cooling power for large rooms in residential or commercial spaces. Its built-in smart kit enables control via smartphone app, voice commands, or the included remote. The unit operates on 230V with R-32 refrigerant and includes features like sleep mode and a self-evaporating system.
Pros
- Powerful 14,000 BTU cooling
- Smart home compatible
- Self-evaporating system
- Multiple control options
Cons
- Wall sleeve sold separately
- No inverter compressor
- Requires 230V outlet
Frigidaire 14,000 BTU Wall Air Conditioner
This Frigidaire wall air conditioner delivers 14,000 BTUs of cooling power, suitable for rooms up to 700 square feet. It includes a dehumidifier and air ionizer for improved air quality, plus a remote control and programmable timer for convenience. Ideal for medium to large spaces where a through-the-wall installation is preferred.
Pros
- 14,000 BTU for rooms up to 700 sq ft
- Built-in dehumidifier and air ionizer
- Washable filter with clean filter alert
- Remote control and 24-hour timer
- Three fan speeds and sleep mode
Cons
- No inverter compressor
- 61 dB noise level
- Heavy 75-pound unit
Top 3 14,000 BTU Through-the-Wall Air Conditioners Reviewed
#1 LG 14,000 BTU Through the Wall Air Conditioner: Best Overall
Why We Picked It
The LG LT1430CNR has the longest track record of any 14,000 BTU wall unit here, with a 3.7 average from 212 ratings. LG rates it for rooms up to 700 square feet, about 30 by 25 feet, and it runs on a 230/208 volt circuit through a NEMA 6-20 LCDI plug at 1500 watts.
It balances capacity with a reasonable listed sound level of 58 dB, lower than the Keystone and Frigidaire. Auto Cool adjusts the fan to hold your set temperature, and you also get three cooling and fan speeds, 4-way air deflection, a thermostat range of 60 to 86 degrees F, a 24 hour timer, auto restart and a filter light. The universal 24 inch chassis fits the same sleeves as LG’s smaller wall units, so upgrading from a smaller LG in the same opening is simple if the outlet is right.
Key Specifications
- Cooling Capacity: 14,000 BTU
- Room Size: Up to 700 sq ft
- Power: 230/208 volts, 1500 watts, NEMA 6-20 plug
- Noise Level: 58 dB
- Refrigerant: R-32
- Weight: 77 pounds
| Pros | Cons |
|---|---|
|
|
Things to Consider
Check that your receptacle matches the NEMA 6-20 plug. In rooms well under 700 square feet, a smaller unit will control humidity better.
Best For
This unit is best for large living rooms and open-plan apartments with an existing LG-style sleeve and a 230 volt outlet.
Check the current price and availability of the LG 14,000 BTU Through the Wall Air Conditioner on Amazon.
Read our full LG 14,000 BTU Through the Wall Air Conditioner review.
#2 Keystone 14,000 BTU Wall Mounted Air Conditioner: Best for Even Temperatures
Why We Picked It
The Keystone KSTAT14-2D matches the LG with 14,000 BTU for rooms up to 700 square feet, and it has 132 ratings on Amazon. Its remote is the reason to choose it. In a big room, the far corner can be several degrees warmer than the air next to the unit. Keystone’s remote reads the temperature where it sits, shows it on its LCD screen and sends it to the unit every 3 minutes, so the unit cools the room to the conditions where you actually are.
It dehumidifies while cooling, with the feature list giving 2.9 pints per hour, and adds energy saver and sleep modes, a 24 hour timer and a check filter alert. It runs on 230 volts at 1515 watts, weighs 78.3 pounds, and carries 1 year parts and labor plus 4 more years on the sealed system.
Key Specifications
- Cooling Capacity: 14,000 BTU
- Room Size: Up to 700 sq ft
- Power: 230 volts, 1515 watts
- Noise Level: 61.5 dB
- Dehumidifying: Up to 2.9 pints per hour (feature list)
- Weight: 78.3 pounds
| Pros | Cons |
|---|---|
|
|
Things to Consider
Keystone also sells the older KSTAT14-2C under a separate listing. The KSTAT14-2D is the current version.
Best For
This unit is best for large rooms with uneven temperatures, such as open plans, basements and garages.
Check the current price and availability of the Keystone 14,000 BTU Wall Mounted Air Conditioner on Amazon.
Read our full Keystone 14,000 BTU Wall Mounted Air Conditioner review.
#3 TCL 14,000 BTU 230V Smart Through-the-Wall Air Conditioner: Best Smart Pick
Why We Picked It
The TCL H14T9EX1-A brings Wi-Fi and a low listed sound level to the 14,000 BTU class. TCL rates it for spaces up to 700 sq ft, and it lists 50 dB, far lower than the LG and Keystone. That makes it one of the few big wall units suited to a large bedroom or a living room where people watch TV.
It works with the TCL Home app, Amazon Alexa and Google Assistant, so you can start cooling on the way home or schedule it around your day, which helps a big unit get ahead of afternoon heat. Dry, Sleep and Eco modes, several fan speeds, 4-way ventilation and a washable filter are included. It runs on 230 volts at 1460 watts, weighs 72.8 pounds, and needs a sleeve of 26 by 20 by 15.57 inches, sold separately.
Key Specifications
- Cooling Capacity: 14,000 BTU
- Room Size: Up to 700 sq ft
- Power: 230 volts, 1460 watts
- Noise Level: 50 dB
- Smart Control: TCL Home app, Alexa, Google Assistant
- Weight: 72.8 pounds
| Pros | Cons |
|---|---|
|
|
Things to Consider
Measure your sleeve first. A 24 inch universal sleeve suits the LG or Keystone better.
Best For
This unit is best for large rooms where smart control and low noise matter, with a 26 inch class sleeve and a 230 volt outlet.
Check the current price and availability of the TCL 14,000 BTU 230V Smart Through-the-Wall Air Conditioner on Amazon.
Read our full TCL 14,000 BTU 230V Smart Through-the-Wall Air Conditioner review.
Other Models Worth Considering
OLMO 14,000 BTU 230V Through-the-Wall Air Conditioner (OW-P14AC230WF). Rated 14,000 / 13,600 BTU/h, with a built-in smart kit for app and voice control and the lowest listed sound level here at 49.5 dB. It runs on 230V, single phase, 60Hz, OLMO asks buyers to confirm their receptacle before ordering, and the sleeve is sold separately. It weighs 80 pounds.
Frigidaire 14,000 BTU Wall Air Conditioner (FHTC142WA2). A 230 volt unit that draws 1400 watts, with a built-in air ionizer, three fan speeds, sleep mode, a 24 hour timer and a washable filter. Frigidaire lists 61 dB, and it has a 3.6 average from 60 ratings.
What to Expect from 14,000 BTU Through-the-Wall Air Conditioners
At 14,000 BTU, a wall unit can cool a large open space on a hot afternoon, but it needs a 230 volt receptacle and draws around 1,500 watts. Listed sound levels vary widely, from 49.5 dB for the OLMO and 50 dB for the TCL to 61 dB for the Frigidaire and 61.5 dB for the Keystone, so check noise if the unit will run near a bed or sofa.
For other options, see our guides to 230V through-the-wall air conditioners and mid-size through-the-wall air conditioners. The product cards show the current price for each unit.
How to Choose a 14,000 BTU Through-the-Wall Air Conditioner
Confirm You Need 14,000 BTU
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 |
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.
Match the Plug
All five need 230 volts, but plug shapes differ. LG specifies a NEMA 6-20 plug. Compare the plug in the listing with your receptacle, or ask an electrician to confirm it.
Match the Sleeve
The LG, Keystone and OLMO use a chassis about 24 inches wide. TCL specifies a 26 inch class sleeve. Measure before ordering.
Noise and Smart Control
For a large bedroom or a quiet living room, the OLMO and TCL list the lowest sound levels, and both offer app and voice control.
How We Evaluate 14,000 BTU Through-the-Wall Air Conditioners
We rank wall air conditioners on manufacturer specifications, listing details and aggregated buyer ratings. For this list we kept only cooling-only through-the-wall units rated at 14,000 BTU. We weighed room coverage and buyer feedback first, giving more weight to ratings from larger numbers of buyers, then compared noise, plug type, sleeve fit, smart features and warranty.
Frequently Asked Questions
Do 14,000 BTU wall units need 230 volts?
Yes. Every 14,000 BTU unit in this guide runs on 230 or 208/230 volts.
How big a room does a 14,000 BTU wall unit cool?
The LG, Keystone and TCL are rated for up to 700 sq ft.
Which 14,000 BTU wall unit is quietest?
The OLMO lists 49.5 dB and the TCL lists 50 dB.
Which has Wi-Fi?
The TCL and OLMO both offer app and voice control.
Final Verdict
The LG 14,000 BTU Through the Wall Air Conditioner is the best 14,000 BTU through-the-wall air conditioner for most large rooms, with a proven record, 700 square feet of coverage and a universal chassis. For more even temperatures across a big space, choose the Keystone 14,000 BTU Wall Mounted Air Conditioner. For smart control and the quietest operation among the top picks, the TCL 14,000 BTU 230V Smart Through-the-Wall Air Conditioner is the pick.
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.