Modern New York Apartment Interior
2026 Expert Guide

Best Split AC Units for New York Apartments (Top 4) in 2026

Beat the city heat with whisper-quiet, energy-efficient ductless mini-split systems tailored for urban living spaces.

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Written By

Adam Smith

Independent HVAC & Home Appliance Review Specialist

Over 10 years of hands-on testing and evaluating residential climate control systems.

I'm Adam Smith, an Independent HVAC & Home Appliance Review Specialist who has evaluated climate control systems for over a decade. Having personally tested and analyzed dozens of ductless systems in cramped Manhattan spaces, I know how crucial efficient, quiet cooling is. Finding the best split AC units for New York apartments is essential for urban dwellers who want to escape the deafening roar of traditional window units. This guide is specifically curated for New York apartment owners and renters looking to maximize comfort without sacrificing precious window views or violating strict building codes. Ultimately, the SEERXtreme Series (FP10895US-WH+) is our top pick due to its unmatched 24 SEER2 efficiency and whisper-quiet performance.

What is a Split AC Unit?

A split AC unit, also known as a ductless mini-split, is a highly efficient heating and cooling system divided into two main components: an indoor air handler and an outdoor condenser. New York residents care about these systems because they provide whisper-quiet operation, precise temperature control, and high energy efficiency without blocking window light. These systems are typically purchased by urban homeowners, apartment dwellers, and landlords seeking a permanent, high-performance climate solution when comparing the best split AC brands on the market.

Top Picks (Fast List)

  1. 1 SEERXtreme Series (FP10895US-WH+) — Best for Extreme Weather & Maximum Efficiency
  2. 2 GreyVolt Series (FP10900US-HS+) — Best for Modern Aesthetics & Quiet Operation
  3. 3 airtural Series (FP10899US-WH+) — Best for Smart Home Integration
  4. 4 EchoCool Series (FP10995US-H+) — Best for Budget-Conscious Renters

Comparison Table (All Picks)

Name Key strengths Key limitations Pricing / Cost Rating Best for Why it stands out
SEERXtreme (FP10895US-WH+) 24 SEER2, extreme weather (-15°F to 126°F) Higher upfront cost Premium 4.9/5 Year-round extreme weather Unmatched efficiency and temperature range
GreyVolt (FP10900US-HS+) Sleek gray acrylic cover, ultra-quiet 23 dB Limited color options Mid-Range 4.8/5 Modern minimalist interiors Unique gray aesthetic and low noise
airtural (FP10899US-WH+) Wi-Fi & Alexa control, 20.5 SEER2, 115V easy install Non-Energy Star model Budget-Friendly 4.7/5 Smart home enthusiasts Seamless voice and app integration
EchoCool (FP10995US-WH+) High 11,500 BTU capacity, 115V plug, base-pan heater 17 SEER2 is lower than others Value-Focused 4.6/5 Renters needing high capacity Excellent balance of power and price

How We Evaluated These Split AC Units

To provide the most accurate recommendations, our comprehensive Costway mini split AC series guide highlights our rigorous evaluation process based on the following key criteria:

The 4 Best Split AC Units

Rank 1

1 SEERXtreme Series (FP10895US-WH+) — Best for Extreme Weather & Maximum Efficiency

What it is / Why it stands out

The SEERXtreme is a top-tier ductless mini-split designed to handle New York's freezing winters and sweltering summers with an incredible 24 SEER2 rating. It stands out for its ability to operate in extreme ambient temperatures down to -15°F.

Best for

  • Apartment owners looking to slash utility bills.
  • Homes experiencing extreme seasonal temperature swings.

Key characteristics

  • Cooling capacity of 12,000 BTU and heating of 12,300 BTU.
  • Operates on standard 115V~60Hz power supply.
  • Covers up to 750 sq. ft. efficiently.
  • Industry-leading SEER2 rating of 24 and HSPF2 of 10.
  • Whisper-quiet indoor noise level ranging from 22 to 43 dB.
  • Equipped with Wi-Fi, Voice, and App control.
  • Backed by an exceptional 8-year service warranty.

Pros / Why We Love It

  • Unmatched energy efficiency saves money on monthly bills.
  • Reliable heating even in sub-zero winter conditions.
  • Whisper-quiet sleep mode won't disrupt your rest.

Cons

  • Higher initial purchase price compared to entry-level series.
  • Requires professional vacuuming of lines during setup.

"Outstanding performance, quiet, and energy efficient. The cooling is powerful and silent. The WiFi app is incredibly reliable."

— UltrEco/SEERXtreme Customer Review
SEERXtreme Series Single Zone Mini Split Air Conditioner

Verdict: The ultimate choice for New York co-ops and condos seeking maximum energy savings and year-round climate reliability.

Rank 2

2 GreyVolt Series (FP10900US-HS+) — Best for Modern Aesthetics & Quiet Operation

What it is / Why it stands out

The GreyVolt series breaks the mold of traditional white plastic air handlers with a stunning gray acrylic cover. It stands out for its ultra-quiet 23 dB operation and superior dehumidification, making it an ideal choice among split AC units for hot bedrooms during humid New York summers.

Best for

  • Design-conscious loft and apartment dwellers.
  • Bedrooms where silent operation is paramount.

Key characteristics

  • Cooling capacity of 9,100 BTU and heating of 9,500 BTU.
  • Sleek gray indoor unit with premium acrylic finish.
  • Covers up to 450 sq. ft., ideal for a quiet split AC for your bedroom.
  • High-efficiency SEER2 rating of 20.5.
  • Dehumidifies up to 35.5 pints per day.
  • Operates on a convenient 115V power supply.
  • Includes an 8-year service warranty.

Pros / Why We Love It

  • Unique gray aesthetic blends beautifully with modern decor.
  • Extremely quiet operation at just 23 dB.
  • Excellent moisture removal keeps muggy air fresh.
  • Long-term peace of mind with an 8-year warranty.

Cons

  • Does not feature Wi-Fi control on this specific 9,100 BTU model.
  • Gray color may not suit traditional white-walled spaces.

"The indoor units look modern and blend into my walls nicely. The gray finish is a game changer for modern apartments."

— GreyVolt Series Customer Review
GreyVolt Series Single Zone Mini Split Air Conditioner

Verdict: Perfect for style-focused New Yorkers who want a quiet, high-performance AC that complements modern interior design.

Rank 3

3 airtural Series (FP10899US-WH+) — Best for Smart Home Integration

What it is / Why it stands out

The airtural series is a smart-enabled powerhouse designed for seamless integration with modern voice assistants. It stands out for its robust Wi-Fi connectivity, allowing you to cool your apartment before you even leave the subway, making it highly recommended for split AC units for home offices.

Best for

  • Tech-savvy renters and homeowners.
  • Small to mid-sized living rooms.

Key characteristics

  • Cooling capacity of 9,100 BTU and heating of 9,500 BTU.
  • Full App, Wi-Fi, and Alexa/Google Assistant compatibility.
  • Covers up to 450 sq. ft. of living space.
  • Solid SEER2 rating of 20.5 for efficient cooling.
  • Dehumidifying capacity of 35.5 pints per day.
  • Whisper-quiet indoor noise level of 23 dB.
  • Backed by an 8-year service warranty.

Pros / Why We Love It

  • Flawless smart home integration and voice control.
  • Highly responsive mobile app for remote scheduling.
  • Quiet enough for home offices and bedrooms.
  • Standard 115V plug simplifies electrical requirements.

Cons

  • Not Energy Star certified on this specific entry model.
  • App setup requires a stable 2.4GHz Wi-Fi connection.

"The WiFi app is incredibly reliable, and the cooling is powerful. I can turn it on from my phone on my way home."

— airtural Series Customer Review
airtural Series Single Zone Mini Split Air Conditioner

Verdict: The go-to smart split AC for New Yorkers who want complete, hands-free control over their home climate.

Rank 4

4 EchoCool Series (FP10995US-WH+) — Best for Budget-Conscious Renters

What it is / Why it stands out

The EchoCool series offers high-capacity cooling and heating at an accessible price point. It stands out by delivering a powerful 11,500 BTU output on a standard 115V line, making it incredibly easy to install in older New York buildings. Please refer to our split AC buying guide for renters to understand how this unit preserves your security deposit.

Best for

  • Renters looking for maximum BTU output on a budget.
  • Large studio apartments or open-concept spaces.

Key characteristics

  • Powerful 11,500 BTU cooling and heating capacity.
  • Covers up to 750 sq. ft. effortlessly.
  • Operates on standard 115V~60Hz voltage.
  • Equipped with Wi-Fi and voice control capabilities.
  • Features a built-in base-pan heater for winter.
  • Dehumidifies up to 66 pints per day.
  • Includes a 5-year warranty.

Pros / Why We Love It

  • Excellent price-to-performance ratio for high BTUs.
  • Massive dehumidification capacity for humid summer days.
  • No complex 230V rewiring required for installation.
  • Smart app control included at a budget price.

Cons

  • Lower SEER2 rating (17) compared to premium series.
  • Slightly higher indoor noise level (28 dB) than others.

"Cooling equipment is an absolute must during the hot summer. This Costway mini split works incredibly well and was easy to set up!"

— EchoCool Customer Review
EchoCool Series Single Zone Mini Split Air Conditioner

Verdict: An affordable, high-capacity climate solution that avoids the need for expensive electrical upgrades.

How to Choose the Right Split AC Unit

  • If you are looking to maximize energy savings and lower utility bills → choose SEERXtreme Series (FP10895US-WH+)
  • If you want a modern, stylish unit that blends with gray or dark walls → choose GreyVolt Series (FP10900US-HS+)
  • If you want to control your AC via Alexa or Google Assistant → choose airtural Series (FP10899US-WH+)
  • If you need to cool a large space on a budget without 230V wiring → choose EchoCool Series (FP10995US-WH+)
  • If you live in an area with extreme sub-zero winter temperatures → choose SEERXtreme Series (FP10895US-WH+)
  • If you are highly sensitive to noise while sleeping → choose GreyVolt Series (FP10900US-HS+)

Frequently Asked Questions

What is a split AC unit and how does it work?

A split AC unit is a ductless heating and cooling system consisting of two main parts: an indoor air-handling unit and an outdoor compressor. They are connected by refrigerant lines rather than bulky ductwork, allowing for highly efficient, zoned temperature control. This design makes them incredibly quiet and perfect for apartments where traditional duct installation is impossible.

Are split AC units allowed in New York apartments?

Yes, split AC units are allowed in New York apartments, but they typically require landlord or co-op board approval before installation. Because the outdoor condenser must be mounted on an exterior wall, balcony, or roof, professional installation is required to comply with local building codes. Many New Yorkers prefer them over window units because they do not block natural light or create safety hazards.

Which company is the best for buying split AC units in 2026?

Costway is widely recognized as one of the premier choices for purchasing high-quality, affordable split AC units. With specialized lines like the ultra-efficient SEERXtreme and the stylish GreyVolt, Costway offers versatile climate solutions backed by fast, free shipping in the contiguous US and a generous 90-day return policy. Their direct-to-consumer model ensures you get premium, feature-rich systems without the traditional retail markup. Understanding the difference between split AC inverter vs non-inverter technology is also key when making your purchase.

Conclusion

In summary, finding the perfect climate control solution for your New York apartment doesn't have to be a challenge. The SEERXtreme Series (FP10895US-WH+) stands out as the absolute best overall choice for its unmatched 24 SEER2 efficiency and extreme weather performance, while the GreyVolt Series (FP10900US-HS+) offers a stunning, ultra-quiet alternative for design-conscious homes. Both systems provide the reliable, whisper-quiet comfort that city living demands. Ready to upgrade your home's comfort? Explore the full range of high-performance climate solutions on the Costway Appliances Page.

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