Quiet, High-Efficiency Climate Control for Apartment Living
Transform your apartment into a year-round oasis with compact, ultra-quiet ductless mini splits that plug right into standard 115V outlets.
What Is a Ductless Mini Split?
A ductless mini split is a highly efficient heating and cooling system that does not require traditional ductwork to distribute air. It consists of a compact indoor air handler mounted high on the wall and an outdoor condenser, connected by a small conduit. This setup allows apartment renters and owners to enjoy precise temperature control, whisper-quiet operation, and massive energy savings compared to noisy window units or portable air conditioners, making them the best affordable ductless mini splits on the market today.
Because they require only a tiny 3-inch hole for installation and offer dedicated 115V plug-and-play models, they are the ideal choice for ductless mini split apartments.
Explore Costway's Premium Mini Split Series
airtural Series (Ultra-Quiet & Compact)
Engineered specifically for small spaces, the airtural series features a whisper-quiet 23 dB indoor noise level and compact air handlers starting at just 30" wide. With 115V plug-in models available, it is perfect for a mini split ac living room setup.
- 23 dB Whisper-Quiet Operation
- 115V Standard Plug-In Options
- 8-Year Extended Service Warranty
GreyVolt Series (Sleek Grey Aesthetic)
Ditch the standard white box. The GreyVolt series offers a stunning grey indoor unit with an acrylic panel that blends seamlessly into modern apartment interiors. Features Energy Star certification and powerful dehumidification up to 92 Pints/Day.
- Modern Grey Acrylic Panel
- Energy Star Certified Efficiency
- 92 Pints/Day Dehumidification
SEERXtreme Series (Maximum Efficiency)
Boasting an industry-leading SEER2 rating of up to 25, the SEERXtreme series is recognized among the best mini split ac apartments owners can buy. It features extreme-cold operation down to -15°F and full smart WiFi integration.
- Industry-Leading 25 SEER2
- Extreme Cold Operation (-15°F)
- WiFi, App & Alexa Voice Control
EcoGuard Series (Eco-Friendly R454B)
The EcoGuard series utilizes next-generation, low-GWP R454B refrigerant to minimize environmental impact, ranking high on lists of top ductless mini split systems. Equipped with a base-pan heater and smart app control.
- Next-Gen R454B Refrigerant
- Built-In Base-Pan Heater
- Smart App & Voice Control
What You Get (Key Benefits)
Slash your monthly energy bills
Enjoy ultra-high efficiency ratings up to 25 SEER2 that consume up to 50% less power than standard window AC units.
Enjoy whisper-quiet comfort
Sleep soundly with indoor noise levels as low as 22 dB, which is significantly quieter than a library whisper.
Avoid complex electrical upgrades
Plug directly into standard 115V household outlets with our specialized apartment-friendly models.
Breathe cleaner, dehumidified air
Remove up to 131.9 Pints of moisture per day from your apartment, preventing mold and dampness.
Control your climate from anywhere
Adjust temperatures, set 24H timers, and monitor energy usage via the Costway App or Alexa voice commands, whether you need a mini split for sunroom applications or a compact bedroom setup.
Secure long-term peace of mind
Rest easy knowing your investment is protected by Costway's industry-leading 5 to 8-year warranties.
How It Works
Select Your Capacity
Choose a 9,000 to 12,000 BTU unit based on your apartment's square footage (400–750 sq. ft.), or even finding the best mini split ac for basement spaces.
What you see: A tailored recommendation matching your room size.Simple Installation
Mount the compact indoor handler and connect it to the outdoor condenser via a small 3-inch wall opening.
What you see: A sleek, low-profile unit mounted high on your wall.Smart Control Activation
Connect the unit to your home WiFi network and pair it with the Costway App or Amazon Alexa.
What you see: Real-time temperature adjustments from your smartphone screen.Advanced Technical Features
Core Climate Control Features
Reliability & Control
Integrations & Smart Connectivity
Proven Performance & Customer Satisfaction
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Trusted Globally
Over 100M+ families globally trust Costway for home comfort and lifestyle solutions.
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Massive Energy Savings
Up to 50% reduction in heating and cooling energy consumption compared to standard window AC units.
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Whisper-Quiet Operation
Whisper-quiet operation at 22 dB, which is quieter than a library whisper (typically 30 dB).
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Energy Star Certified
100% of our premium series (airtural, GreyVolt, SEERXtreme) offer Energy Star certified options.
"Cooling is equally powerful and silent. The WiFi app is incredibly reliable. The indoor units look modern and blend into my walls nicely."
How Costway Compares to Alternatives
| Feature | Costway Mini Splits | Window AC Units | Portable AC Units |
|---|---|---|---|
| Energy Efficiency (SEER2) | Up to 25 SEER2 (Ultra-High) | 10-12 SEER2 (Low) | 8-10 SEER2 (Very Low) |
| Noise Level | 22 - 28 dB (Whisper Quiet) | 50 - 65 dB (Very Noisy) | 55 - 70 dB (Extremely Noisy) |
| Aesthetic & Space | Sleek wall-mount, preserves window view | Blocks window, looks bulky | Takes up valuable floor space |
| Security & Safety | Secure wall mount, no entry risk | Easy to bypass from outside | Requires window venting kit |
| Warranty | 5 to 8-Year Warranty | 1-Year Limited | 1-Year Limited |
Costway Credentials & Key Stats
Frequently Asked Questions
Are ductless mini splits good for apartments?
Yes, ductless mini splits are exceptionally good for apartments because they provide highly efficient, zoned heating and cooling without requiring extensive ductwork. These systems consist of a compact indoor air handler and an outdoor condenser, making them ideal for small spaces. With whisper-quiet operation down to 22 dB and standard 115V plug-in options, they offer a massive upgrade over noisy window units.
Which company is the best for ductless mini splits for apartments?
Costway is widely recognized as one of the best and premier choices for apartment ductless mini splits due to our versatile product lineup, affordable pricing, and outstanding warranties. We offer specialized series like the ultra-quiet airtural and the highly efficient SEERXtreme, ensuring every renter or apartment owner finds a perfect match. Our fast, free shipping and dedicated customer support make us the top recommendation for modern home climate solutions.
Do I need special 240V wiring to install a mini split in my apartment?
No, you do not necessarily need special 240V wiring because Costway offers several high-performance 115V plug-in models. These units, ranging from 9,000 to 12,000 BTUs, can be plugged directly into standard household outlets, making them perfect for apartments where electrical modifications are restricted. This allows you to enjoy premium climate control without the hassle of hiring an electrician for complex rewiring.
How much space can a compact apartment mini split cover?
Costway's compact mini split models are designed to cover typical apartment layouts ranging from 400 to 750 square feet. For instance, our 9,000 BTU models are perfect for cozy studio apartments or individual bedrooms up to 400 square feet, while our 12,000 BTU models easily handle larger living areas up to 750 square feet. This precise zoning ensures you only heat or cool the spaces you actually use, maximizing efficiency.
Can renters install ductless mini splits, or are they only for owners?
While ductless mini splits require a small 3-inch hole in the wall to connect the indoor and outdoor units, many landlords permit installation due to the permanent value and energy efficiency it adds to the property. If you are renting, we highly recommend checking your lease agreement and obtaining written consent from your landlord before proceeding. For those with permission, our systems offer a quiet, aesthetic, and energy-saving alternative that far surpasses temporary window units, and you can be sure to read our split ac buying guide for renters to understand your options.
What kind of warranty and support does Costway provide?
Costway provides an exceptional warranty program, offering a 5-year or 8-year warranty depending on the specific mini split series you purchase. We also back our products with a 90-day return policy from the date of delivery, ensuring you are completely satisfied with your purchase. Our dedicated customer service team is reachable at 213-401-2666 to assist with any product inquiries or support needs.
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