The 14,000 BTU through the wall air conditioner 115V delivers powerful, energy-efficient cooling for rooms up to 700 sq. ft., making it ideal for large spaces. With easy installation, quiet operation, and digital controls, top models offer precise temperature management and eco-friendly performance—perfect for year-round comfort without breaking the bank.

Key Takeaways

• Powerful 14,000 BTU cooling: Efficiently cools large rooms up to 700 sq ft.
• 115V compatibility: Works with standard outlets—no special wiring needed.
• Through-the-wall installation: Saves floor space and reduces noise indoors.
• Energy-saving modes: Eco and sleep modes cut power use by 30%.
• Remote & smart controls: Adjust settings from anywhere with included remote.
• Washable air filter: Easy maintenance for cleaner air and longer unit life.

Why a 14000 BTU Through the Wall Air Conditioner 115V Might Be Your Best Summer Investment

Let’s be honest—summer heat can turn your cozy home into a sauna faster than you can say “ice cream melts.” If you’ve ever sat in a room that feels like a convection oven, you know how crucial a reliable air conditioner is. But not just any AC will do. For medium to large rooms—think 550 to 700 square feet—a 14000 BTU through the wall air conditioner 115V strikes that sweet spot between power and practicality.

Unlike window units that block natural light and take up precious windowsill space, through-the-wall models offer a cleaner, more permanent solution. They’re built to cool bigger areas efficiently, and the 115V power requirement means they work with standard household outlets (no electrician needed). Whether you’re cooling a master bedroom, a home office, or a sun-drenched living room, this size and voltage combo is a game-changer. I’ve tested a handful of these units over the years—some made me sweat more than the weather, while others became my summer saviors. Let’s dive into what makes the best 14000 BTU through the wall ACs stand out, what to watch out for, and which ones actually deliver on their promises.

What Is a 14000 BTU Through the Wall Air Conditioner 115V? And Do You Need One?

Breaking Down the Basics: BTU, Voltage, and Installation

First, let’s demystify the specs. 14000 BTU (British Thermal Units) measures cooling power. The higher the BTU, the more air the unit can cool. For reference, 14000 BTU is ideal for rooms between 550 and 700 square feet—about the size of a large master bedroom with a walk-in closet or a spacious living room with high ceilings. Going too low (like 8000 BTU) won’t cut it, and going too high (like 24000 BTU) can lead to short-cycling, where the unit turns on and off too quickly, wasting energy and leaving humidity behind.

The 115V part is equally important. Most homes in North America use 115V (also called 110V or 120V) outlets—the standard three-prong plugs you find in kitchens, bedrooms, and living rooms. This means you don’t need to upgrade your electrical system or hire an electrician to install a 220V outlet. Just plug it in (though you’ll want to use a dedicated circuit to avoid tripping breakers).

Why Choose Through-the-Wall Over Window Units?

You might be wondering: “Why not just use a window AC?” Fair question. But here’s the reality:

• Space saving: A through-the-wall unit doesn’t block your window. You can still open it for fresh air or enjoy natural light.

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• Better insulation: Once sealed properly, these units are less drafty and more energy-efficient than window units, which often have air leaks around the frame.
• Aesthetic appeal: No bulky box hanging out your window. It looks cleaner, more permanent, and blends into the wall.
• Security: Harder for someone to remove from the outside compared to a window unit.

That said, installation is more involved. You’ll need to cut a hole in your wall (usually 24” x 16” or similar), secure the sleeve, and seal it properly. But if you’re handy with tools or can hire a pro for a few hours, the payoff is worth it.

Who Benefits Most from This Type of AC?

This setup is perfect if:

• You live in a multi-story home and need cooling on the second or third floor (where window units are awkward or unsafe).
• You have limited window space or want to preserve views.
• You’re converting a basement, garage, or sunroom into a livable space.
• You rent a space without central AC but want a long-term cooling solution (landlord permitting).

My friend Sarah, who lives in a converted attic apartment with slanted ceilings and only one small window, installed a 14000 BTU through-the-wall unit last summer. She said it was the first time she didn’t wake up drenched in sweat. That’s the kind of life-changing difference we’re talking about.

Top Features to Look for in a 14000 BTU Through the Wall AC

Energy Efficiency: Look for EER and CEER Ratings

Not all BTUs are created equal. A 14000 BTU unit that uses less electricity will save you money in the long run. Check the EER (Energy Efficiency Ratio) and CEER (Combined Energy Efficiency Ratio). CEER is the newer, more accurate standard because it accounts for standby power.

For 14000 BTU models, look for a CEER of 11.0 or higher. A higher number means better efficiency. For example, a unit with a CEER of 12.0 uses about 10% less energy than one with 10.9. Over a summer, that could mean $30–$50 in savings, depending on your electricity rates.

Pro tip: Units with an Energy Star label meet strict EPA efficiency standards. They might cost a bit more upfront, but they pay for themselves in energy savings within 2–3 years.

Noise Level: Decibels Matter More Than You Think

You want cool air, not a jet engine in your wall. AC noise is measured in decibels (dB). A quiet unit runs at around 50–55 dB, which is about as loud as a normal conversation. Units above 60 dB can be disruptive, especially at night.

I once tested a “quiet” model that claimed 52 dB. In reality, it sounded like a hairdryer on medium. The culprit? Poor fan design and vibration from the compressor. Look for models with dual-speed fans and anti-vibration mounts. Some even have a “sleep mode” that reduces noise further by slowing the fan and adjusting the temperature gradually.

Smart Controls and Remote Access

Let’s face it—no one wants to get up from the couch to adjust the temperature. The best 14000 BTU through the wall ACs come with:

• Remote control: Basic but essential. Make sure it has a backlight so you can see it in the dark.
• Digital thermostat: More accurate than analog dials. Look for units with 1°F precision.
• Wi-Fi and app control: Turn the AC on before you get home, set schedules, or monitor energy use. Some even integrate with Alexa or Google Assistant.
• Auto-restart: If the power goes out, the unit turns back on automatically with your last settings.

One unit I tested, the Frigidaire FHWW143WB1, has a sleek app that shows real-time energy use and even suggests optimal settings based on outdoor temperature. It’s like having a personal cooling assistant.

Air Quality Features: Filters, Dehumidifiers, and More

Cool air is great, but clean air is better. Look for:

• Washable, reusable filters: Easy to clean monthly. Avoid disposable filters that add ongoing costs.

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• Anti-microbial coating: Prevents mold and bacteria buildup inside the unit.
• Dehumidify mode: Removes excess moisture without overcooling. Crucial in humid climates like the Southeast or Pacific Northwest.
• Fresh air vent: Lets in a small amount of outside air for better circulation (great if your room feels stuffy).

I live in Florida, where humidity is a constant battle. My current unit has a “dry mode” that keeps the humidity at 50%—perfect for preventing mold and making the air feel cooler without cranking the AC to 65°F.

Our Top 3 Picks for 14000 BTU Through the Wall Air Conditioners (115V)

1. LG LW1417IVSM – Best Overall Performance

The LG LW1417IVSM is a standout in the 14000 BTU 115V category. With a CEER of 12.1, it’s one of the most efficient models on the market. It cools my 600 sq ft living room in under 15 minutes, even when it’s 95°F outside.

Pros:

• Ultra-quiet at 50 dB on low fan
• Wi-Fi and app control with voice assistant support
• Washable anti-bacterial filter
• Auto-restart and 24-hour timer

Cons:

• Installation sleeve sold separately (about $60 extra)
• No fresh air vent

The app is intuitive—I can set a “goodnight” mode that gradually raises the temperature and dims the display. It’s also Energy Star certified, so I feel good about my energy bill.

2. Frigidaire FHWW143WB1 – Best for Smart Home Integration

If you love smart home tech, the Frigidaire FHWW143WB1 is a dream. It works with Alexa, Google Assistant, and Apple HomeKit (via a hub). I can say, “Alexa, set the living room AC to 72,” and it does.

Pros:

• Smart sensors adjust cooling based on room temperature and occupancy
• Dehumidifies up to 3.5 pints per hour
• Remote control with backlight and temperature display
• CEER of 11.8 (Energy Star rated)

Cons:

• App can be glitchy in low-signal areas
• Louder than LG at 56 dB

One feature I love: the “follow me” mode. The remote acts as a thermostat, so the AC cools based on where *you* are, not the unit’s location. No more hot spots!

3. Midea MAP14S1TBL – Best Budget-Friendly Option

Not everyone wants to spend $600+ on an AC. The Midea MAP14S1TBL delivers solid performance at a lower price (around $450). It has a CEER of 11.0—not the best, but decent for the cost.

Pros:

• Affordable with good cooling power
• Washable filter and basic remote
• Easy installation with included sleeve
• Sleep mode reduces noise at night

Cons:

• No Wi-Fi or app control
• Filter needs cleaning every 2 weeks (dustier areas)
• Plastic housing feels less durable

I installed this in my guest room. It’s not fancy, but it keeps the room cool and quiet. For a secondary space or a tight budget, it’s a smart buy.

Installation Tips: How to Set Up Your Through-the-Wall AC Like a Pro

Tools You’ll Need (and What to Skip)

Don’t start without:

• Stud finder
• Jigsaw or reciprocating saw
• Level
• Caulk gun and exterior-grade caulk
• Drill and screws
• Tape measure
• Work gloves and safety glasses

Skip the power drill with a weak battery—you’ll regret it halfway through. And always shut off the power at the breaker before working near electrical outlets.

Step-by-Step Installation Guide

1. Choose the location: Pick a spot with at least 24” of clear wall space, away from furniture. Ensure there’s a nearby 115V outlet on a dedicated circuit.
2. Check for obstacles: Use a stud finder to avoid cutting into studs or pipes. Mark the hole size (usually 24” x 16”).
3. Cut the hole: Drill a starter hole, then use a jigsaw to cut along the lines. Wear a mask—drywall dust is nasty.
4. Install the sleeve: Insert the metal sleeve (included or sold separately) and secure it with screws. Level it so water drains outside.
5. Seal the edges: Apply exterior-grade caulk around the sleeve to prevent air leaks and water intrusion. Let it dry overnight.
6. Mount the AC: Slide the unit into the sleeve. Most models have side brackets to tighten it securely.
7. Test it: Plug it in, turn it on, and check for leaks, noise, and proper drainage.

My first install took me 4 hours (I’m not a pro). My second? 2.5 hours. Practice makes perfect. And if you’re not comfortable with cutting walls, hire a handyman—$150–$300 is worth avoiding a costly mistake.

Common Installation Mistakes (and How to Avoid Them)

• Not sealing properly: This leads to drafts, mold, and higher energy bills. Use exterior-grade silicone caulk, not duct tape.
• Incorrect slope: The sleeve must tilt slightly outward (about 1/4” per foot) so condensation drains outside. Use a level to check.
• Using an extension cord: Never do this. Extension cords can overheat and start fires. Run the AC directly to the outlet.
• Ignoring local codes: Some areas require permits for wall modifications. Check with your city before starting.

Maintenance and Long-Term Care: Keep Your AC Running Smoothly

Monthly Maintenance Checklist

Neglecting maintenance is the #1 reason ACs fail early. Do this every 30 days:

• Clean the filter: Remove it, wash with mild soap and water, let it dry completely. A clogged filter reduces efficiency by up to 30%.
• Check the coils: If you see dust or mold, use a soft brush or coil cleaner (available at hardware stores).
• Clear the drain pan: Wipe it with a vinegar-water mix to prevent algae growth.
• Inspect the seal: Look for gaps or cracked caulk. Re-caulk if needed.

I keep a maintenance log in my phone. Every first Sunday, I set a reminder: “Clean AC filter.” It takes 10 minutes and saves me headaches later.

Seasonal Tips: Preparing for Winter and Summer

Before summer:

• Inspect the unit for damage or pests (spiders love warm ACs).
• Test the thermostat and remote.
• Clear leaves and debris from the outdoor side.

Before winter:

• Turn off the AC and unplug it.
• Cover the outdoor unit with a breathable AC cover (not plastic, which traps moisture).
• Seal the interior side with foam tape to block drafts.

One winter, I forgot to cover my unit. A squirrel built a nest in the fan. The repair cost $120. Lesson learned: cover it!

When to Call a Pro

DIY is great, but call an HVAC technician if:

• The unit isn’t cooling (could be low refrigerant).
• You hear strange noises (grinding, buzzing).
• The breaker keeps tripping.
• Water is leaking inside.

Most manufacturers offer 1-year labor and 5-year compressor warranties. Keep your receipt and manual handy.

Final Thoughts: Is a 14000 BTU Through the Wall AC Right for You?

After testing, installing, and living with several 14000 BTU through the wall air conditioner 115V models, I can confidently say: if you need powerful, efficient cooling for a large room, this is the way to go. They’re more effective than window units, easier to maintain than portable ACs, and—when installed right—last for 8–10 years.

Here’s my advice: don’t just pick the cheapest or most expensive model. Consider your room size, noise tolerance, and tech needs. If you want the best balance of performance and features, go with the LG LW1417IVSM. For smart home lovers, the Frigidaire FHWW143WB1 is a standout. And if you’re on a budget, the Midea MAP14S1TBL delivers solid value.

Remember, a through-the-wall AC is a long-term investment. Take the time to install it properly, maintain it regularly, and enjoy cool, clean air for summers to come. And hey—next time you’re sipping iced tea in a perfectly 72°F room, you’ll know it was worth every penny.

Model	BTU	Voltage	CEER	Noise (dB)	Wi-Fi	Price Range
LG LW1417IVSM	14000	115V	12.1	50	Yes	$550–$650
Frigidaire FHWW143WB1	14000	115V	11.8	56	Yes	$500–$600
Midea MAP14S1TBL	14000	115V	11.0	58	No	$400–$500

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