5 Best Air Conditioners for 700 Square Feet [In 2025]

Are you tired of sweltering in your 700 square foot space during those scorching summer months? You’re not alone! Finding the perfect air conditioner for a room this size can feel like searching for a needle in a haystack. With so many options flooding the market, how do you know which one will actually keep you cool without breaking the bank or your eardrums?

Here’s the thing – not all air conditioners are created equal, especially when it comes to cooling larger spaces like 700 square feet. You need something powerful enough to handle the job but efficient enough to keep your electricity bills from skyrocketing. That’s where we come in!

We’ve done the heavy lifting for you, researching and analyzing the top air conditioning units specifically designed for 700 square foot spaces. From portable powerhouses to sleek window units, we’ll walk you through everything you need to know to make the best choice for your home, apartment, or office.

Our Top 3 Picks

Top 5 Best Air Conditioners for 700 Square Feet

1. DOMANKI 14,000 BTU Portable Air Conditioner

This powerhouse portable unit packs serious cooling punch with its 14,000 BTU ASHRAE rating (10,000 BTU SACC). What sets it apart is the drainage-free cooling system and whisper-quiet 48dB sleep mode.

The DOMANKI unit features a smart 3-in-1 design, functioning as an air conditioner, dehumidifier, and fan. With R32 refrigerant, it’s more environmentally friendly and energy-efficient than older R-410A systems. The unit includes smart features like a 24-hour timer, auto swing, and four fan speeds.

Real users rave about its quick cooling performance, with one reviewer noting it dropped their temperature 6-7 degrees in just one hour, even in a space slightly larger than recommended. The built-in wheels and hidden handle make it easy to move between rooms.

Pros and Cons

Pros:

• Powerful 14,000 BTU cooling capacity
• Ultra-quiet 48dB sleep mode
• Drainage-free operation with auto-evaporation
• Smart features including 24-hour timer and child lock
• R32 refrigerant for better efficiency
• Complete window kit included
• Easy mobility with wheels and handle

Cons:

• Takes up floor space
• Can produce vibrating/humming noise at times
• Higher price point than basic models
• Exhaust hose setup required

2. BLACK+DECKER Window Air Conditioner 14,300 BTU

This compact powerhouse delivers an impressive 14,300 BTUs while still running on standard 115V power. It’s designed specifically for larger rooms up to 700 square feet and stands out for its energy efficiency.

The unit features four cooling levels (auto, low, medium, high) and uses eco-friendly R32 refrigerant that improves energy efficiency by up to 10% compared to older refrigerants. The accordion-style side panels make installation straightforward for standard double-hung windows.

Users consistently praise its cooling power, with one reviewer expressing amazement at getting 14,500 BTU performance from a 115V unit. The compact design fits smaller windows while delivering big cooling power.

Pros and Cons

Pros:

• High BTU output (14,300) on 115V power
• Compact design fits smaller windows
• Energy-efficient R32 refrigerant
• Full-function remote control
• Four cooling levels plus fan-only mode
• Easy accordion-panel installation
• Reasonable noise levels

Cons:

• Limited to standard double-hung windows
• Remote doesn’t include batteries
• 61dB noise level (louder than some portables)
• No heating function

3. BLACK+DECKER Smart Portable Air Conditioner 14,000 BTU

This smart portable unit brings your cooling into the 21st century with Wi-Fi connectivity and voice control compatibility. The 14,000 BTU ASHRAE (10,200 BTU SACC) unit works with Amazon Alexa and Google Assistant.

What makes this unit special is the “Follow Me” remote feature, which uses the remote as a thermostat for more precise temperature control. The smart app allows you to control your AC from anywhere, perfect for cooling your space before you arrive home.

One parent reviewer specifically chose this unit for their toddler’s bedroom, praising its quiet operation and consistent temperature control. The three-in-one functionality (AC, dehumidifier, fan) adds versatility.

Pros and Cons

Pros:

• Smart connectivity with Wi-Fi and voice control
• Follow Me remote for precise temperature control
• Quiet operation suitable for bedrooms
• Three-in-one functionality
• Mobile app control
• Reliable BLACK+DECKER brand
• Easy installation with included window kit

Cons:

• Remote lacks backlight
• May require drainage in humid conditions
• Takes up floor space
• Higher initial cost for smart features

4. Whirlpool 14,000 BTU Portable Air Conditioner with Heater

This versatile 4-in-1 unit functions as an air conditioner, heater, fan, and dehumidifier, making it perfect for year-round use. The 14,000 BTU ASHRAE (10,000 BTU SACC) capacity handles 700 square feet effectively.

The standout feature is the heating capability, which makes this unit valuable in transitional seasons or for year-round climate control. With three fan speeds, three cooling speeds, and a 24-hour programmable timer, it offers excellent customization.

The unit features 4-way directional rolling casters and molded side handles for easy movement. The brightly lit top controls make operation simple even in dim lighting conditions.

Pros and Cons

Pros:

• 4-in-1 functionality with heating capability
• Year-round usability
• Easy mobility with 4-way casters
• Bright, clear controls
• Remote control included
• Good dehumidification capacity (108 pints)
• Multiple speed options

Cons:

• Some units may have compressor issues initially
• Larger size than some portables
• Higher noise level at 49dB
• More expensive due to heating function

5. LG 14,000 BTU Through the Wall Air Conditioner

This through-the-wall unit offers permanent installation benefits with powerful 14,000 BTU cooling for 700 square feet. It requires 230/208V power but delivers superior efficiency and performance.

The unit features three cooling and fan speeds with Auto Cool functionality, plus 4-way air deflection for optimal air distribution. The auto-restart feature automatically turns the unit back on after power outages, maintaining your comfort settings.

Professional installation is typically required, but users appreciate the permanent solution that doesn’t block windows or take up floor space. The wall-mounted design also tends to be quieter than portable alternatives.

Pros and Cons

Pros:

• Permanent installation doesn’t block windows
• Superior energy efficiency
• Auto-restart after power outages
• 4-way air deflection
• Quiet operation
• 24-hour timer function
• Filter light reminder
• Washable filter included

Cons:

• Requires 230/208V electrical connection
• Professional installation typically needed
• Higher upfront installation costs
• Permanent modification to wall required
• Instructions could be clearer

Why Choosing the Right AC Size Matters for 700 Sq Ft Spaces

Picture this: you buy an air conditioner that looks great on paper, but when summer hits, it’s working overtime just to drop the temperature a few degrees. Sound familiar? That’s what happens when you don’t match your AC’s capacity to your room size.

A 700 square foot space sits right in that sweet spot where you need serious cooling power. We’re talking about areas like large living rooms, open-plan apartments, master bedrooms, or even small offices. These spaces are too big for those tiny 8,000 BTU units you see everywhere, but they don’t necessarily need the industrial-strength monsters either.

When your air conditioner is properly sized, it works efficiently, cycles on and off at appropriate intervals, and maintains consistent temperatures. Too small, and it’ll run constantly without ever reaching your desired temperature. Too large, and it’ll short-cycle, wasting energy and failing to properly dehumidify your space.

Understanding BTU Requirements for 700 Square Feet

What is BTU and How Much Do You Need?

BTU stands for British Thermal Unit, and it’s basically the measuring stick for cooling power. Think of it as horsepower for air conditioners. One BTU is the amount of energy needed to cool one pound of water by one degree Fahrenheit. For air conditioners, more BTUs mean more cooling power.

For a 700 square foot space, you’re looking at needing somewhere between 12,000 to 15,000 BTUs. Most experts recommend around 14,000 BTUs as the sweet spot for this size room. This gives you enough power to cool effectively while maintaining good energy efficiency.

But here’s where it gets interesting – manufacturers often list two BTU ratings: ASHRAE and SACC. ASHRAE ratings are the traditional measurements, while SACC (Seasonally Adjusted Cooling Capacity) is a newer, more realistic measure that accounts for real-world conditions. Always pay attention to the SACC rating when comparing portable units!

Factors That Affect Cooling Requirements

Your cooling needs aren’t just about square footage. Several factors can bump up your BTU requirements:

Ceiling height plays a huge role. Got vaulted ceilings or high lofts? You’ll need more cooling power. Sun exposure is another biggie – rooms with large south-facing windows or lots of glass need extra BTUs to combat solar heat gain.

Insulation quality can make or break your cooling efficiency. Poor insulation means your AC works harder. The number of people regularly in the space matters too – each person adds about 600 BTUs of heat load.

Don’t forget about heat-generating appliances. Got a big-screen TV, gaming setup, or kitchen area in your 700 sq ft space? These add to your cooling load. Even the geographic location matters – cooling a space in Phoenix requires more power than the same space in Seattle.

Types of Air Conditioners Perfect for 700 Sq Ft Rooms

Portable Air Conditioners

Portable air conditioners are like the Swiss Army knives of cooling. These wheeled wonders can move from room to room, making them perfect for renters or anyone who needs flexible cooling solutions. They typically range from 12,000 to 15,000 BTUs for 700 sq ft spaces.

The biggest advantage? No permanent installation required. Just roll it where you need it, connect the exhaust hose to a window, plug it in, and you’re cooling. Most modern portables also double as dehumidifiers and fans, giving you three appliances in one.

However, they do take up floor space and can be noisier than other options. They also tend to be less energy-efficient than window units because they’re working harder to move air around.

Window Air Conditioners

Window units are the tried-and-true workhorses of residential cooling. They’ve been keeping us cool for decades, and there’s a good reason why. For 700 square feet, you’ll want a window unit with 14,000+ BTUs.

The main advantages are efficiency and cost. Window units typically cool more effectively per BTU than portable units because they don’t lose cool air to ductwork or internal components. They’re also generally quieter and less expensive.

The downside? You need a suitable window, and installation can be tricky for heavier units. Plus, they block your window view and can be challenging to remove for window cleaning.

Through-the-Wall Units

Through-the-wall air conditioners are like window units’ more permanent cousins. They require a sleeve installation but offer superior performance and don’t block your windows.

These units are ideal if you’re willing to make a more permanent installation commitment. They’re typically more efficient than portable units and quieter than window units because the compressor sits outside your living space.

The trade-off is installation complexity and cost. You’ll likely need professional installation, and they’re more expensive upfront. But if you’re staying put for a while, they offer the best combination of performance and aesthetics.

Key Features to Consider When Buying

Energy Efficiency and Operating Costs

When you’re cooling 700 square feet, energy costs can add up quickly. Look for units with high Energy Efficiency Ratio (EER) ratings – anything above 10 is considered good, while 12+ is excellent.

The type of refrigerant matters too. R32 refrigerant, found in several of our top picks, is more efficient than older R-410A systems. This can translate to 10% better efficiency and lower operating costs over time.

Don’t forget about smart features that save energy. Programmable timers, sleep modes that gradually adjust temperature, and smart sensors that detect room occupancy can all help reduce your electricity bills.

Noise Levels and Sleep Mode

Nobody wants to choose between staying cool and getting good sleep. Noise levels are measured in decibels (dB), and anything under 50dB is considered quiet enough for bedrooms.

Sleep modes are game-changers for light sleepers. These modes gradually adjust temperature and fan speed throughout the night, maintaining comfort while minimizing noise and energy use.

Smart Features and Connectivity

Modern air conditioners are getting smarter, and for good reason. Wi-Fi connectivity lets you cool your space before arriving home, while voice control integration with Alexa or Google Assistant adds convenience.

Mobile apps aren’t just novelties – they provide useful features like energy usage tracking, maintenance reminders, and precise temperature scheduling. Some units even learn your preferences over time.

Installation Requirements

Consider your installation options before buying. Portable units are plug-and-play but need window exhaust access. Window units require proper window dimensions and adequate support. Through-wall units need electrical work and permanent installation.

Think about your living situation too. Renters might prefer portable units, while homeowners might benefit from more permanent solutions like through-wall installations.

Comparison Chart: All 5 Air Conditioners

Model	Type	BTU (ASHRAE/SACC)	Noise Level	Key Features	Best For
DOMANKI 14,000	Portable	14,000/10,000	48dB	Drainage-free, Sleep mode	Quiet operation needs
BLACK+DECKER Window	Window	14,300	61dB	Compact, 115V power	Small windows, efficiency
BLACK+DECKER Smart	Portable	14,000/10,200	Not specified	Wi-Fi, Voice control	Tech enthusiasts
Whirlpool 4-in-1	Portable	14,000/10,000	49dB	Heating function	Year-round use
LG Through-Wall	Through-wall	14,000	Not specified	Permanent install	Long-term solution

Installation Tips and Best Practices

Portable AC Installation Guide

Installing a portable air conditioner is straightforward, but doing it right makes all the difference. Start by choosing a location near a window and electrical outlet, keeping the unit at least 20 inches from walls and furniture for proper airflow.

The exhaust hose connection is crucial – make it as short and straight as possible. Every bend and extra foot of hose reduces efficiency. Seal the window connection properly to prevent hot air from sneaking back in.

Don’t forget about drainage! While many modern units feature auto-evaporation, have a plan for excess condensation, especially in humid climates.

Window Unit Installation Tips

Window unit installation requires careful attention to support and sealing. These units are heavy – often 60+ pounds – so ensure your window frame can handle the weight. Use proper brackets and support arms.

Seal all gaps around the unit with weather stripping or foam. Even small air leaks can significantly impact efficiency. Tilt the unit slightly outward (about 1/4 inch) to allow condensation to drain properly.

Consider the electrical requirements too. Most 14,000+ BTU units need dedicated circuits to prevent tripping breakers.

Maintenance and Care Tips

Regular maintenance keeps your air conditioner running efficiently and extends its lifespan. Clean or replace filters monthly during heavy use – dirty filters can reduce efficiency by up to 15%.

Keep the exterior coils clean and free from debris. For portable units, empty drainage tanks regularly, even if they have auto-evaporation features. For window and through-wall units, clear vegetation and debris from around the outdoor portion.

Schedule annual professional maintenance for through-wall units and consider it for expensive portable or window units. A technician can check refrigerant levels, clean internal components, and catch potential problems early.

Budget Considerations and Value Analysis

Prices for 14,000 BTU air conditioners range from $400 for basic window units to over $800 for feature-rich portable or smart units. Don’t just look at upfront costs – consider the total cost of ownership.

Energy-efficient units cost more initially but save money over time through lower electricity bills. Smart features might seem expensive, but they can optimize energy use and extend equipment life.

Factor in installation costs too. Portable units are DIY-friendly, while through-wall units typically require professional installation adding $200-500 to the total cost.

Final Recommendations: Which AC is Right for You?

For most people cooling 700 square feet, we recommend the DOMANKI 14,000 BTU Portable for its combination of power, quiet operation, and convenience. It’s perfect for renters or anyone who needs flexible cooling.

If you have suitable windows and want maximum efficiency, the BLACK+DECKER Window Unit offers excellent value and performance. It’s our top pick for permanent window installation.

Tech lovers should consider the BLACK+DECKER Smart Portable for its connectivity features and precise control options. It’s ideal for those who want to integrate cooling into their smart home setup.

For year-round climate control, the Whirlpool 4-in-1 with heating capability provides excellent versatility, especially in climates with variable weather.

Homeowners ready for permanent installation should consider the LG Through-Wall Unit for its superior efficiency and clean aesthetic.

Frequently Asked Questions (FAQs)

Q1: How much electricity does a 14,000 BTU air conditioner use? A 14,000 BTU air conditioner typically uses between 1,200-1,800 watts per hour, depending on efficiency ratings and operating conditions. This translates to roughly $0.15-0.25 per hour at average electricity rates, or about $100-150 per month if running 8 hours daily.

Q2: Can I use a 14,000 BTU AC in a room smaller than 700 square feet? Yes, but it may short-cycle and waste energy. A 14,000 BTU unit will cool smaller rooms very quickly but may not run long enough to properly dehumidify the air. For rooms under 500 square feet, consider a smaller unit for better efficiency.

Q3: What’s the difference between ASHRAE and SACC BTU ratings? ASHRAE ratings are laboratory measurements under ideal conditions, while SACC (Seasonally Adjusted Cooling Capacity) reflects real-world performance including factors like heat infiltration and humidity. SACC ratings are typically 20-30% lower than ASHRAE ratings and provide more realistic expectations.

Q4: Do I need a special electrical outlet for a 14,000 BTU air conditioner? Most portable and window units under 15,000 BTU run on standard 115V outlets, but may require a dedicated circuit to prevent breaker trips. Through-wall units often require 230V outlets and professional electrical work. Always check the specific electrical requirements before purchasing.

Q5: How often should I clean or replace my air conditioner filter? Clean or replace filters every 30 days during heavy use, or every 2-3 months during light use. Dirty filters can reduce efficiency by up to 15% and strain the system. Most modern units have washable filters that can be cleaned with mild soap and water, then thoroughly dried before reinstalling.

Conclusion

Choosing the right air conditioner for your 700 square foot space doesn’t have to be overwhelming. Whether you prioritize quiet operation, smart features, energy efficiency, or versatility, there’s a perfect match among our top five recommendations.

Remember that the best air conditioner is the one that fits your specific needs, budget, and living situation. Consider factors like installation requirements, noise levels, energy efficiency, and long-term costs when making your decision.

Don’t let another summer pass in discomfort. With the right 14,000 BTU air conditioner, you can transform your 700 square foot space into a cool, comfortable oasis that you’ll actually want to spend time in.