Introducing the C&H 4 Zone 23 SEER Mini Split Hyper Heat AC, your ultimate solution for year-round comfort! This powerful system includes a Hyper Multi Zone Outdoor Unit that efficiently heats and cools even in extreme temperatures as low as -13 F. With a remarkable 23.9 SEER2 rating, 11.7 EER, and 9.5 HSPF, you can enjoy significant energy savings while staying cozy. Upgrade your setup by adding indoor units via the dropdown above, and take advantage of features like a built-in basepan heater, gold-coated coils for durability, and refrigerant leak detection for peace of mind. The high-frequency racer technology ensures rapid startup, reaching maximum speed in just 6 seconds, while the intelligent dusting switch keeps your coils clean for optimal performance.
This C&H 4-Zone Custom package is a fully configurable multi-zone system that lets you choose your indoor unit types and outdoor unit capacity through the dropdown selectors above. The base configuration ships with a 36,000 BTU multi-zone outdoor unit — upgradeable to 48K, 55K, or the Hyper −22°F series for colder climates. Each of the four zones selects independently from 8 indoor unit types: Olivia wall mount, Astoria wall mount, Floor Console, Floor/Ceiling Universal, Slim Ducted, Ceiling Cassette, Slim One-Way Cassette, and Air Handler.
C&H multi-zone systems use inverter technology that allows each indoor unit to be controlled independently — and indoor units don't need to be installed simultaneously. Combined BTU of all selected indoor units must not exceed the outdoor unit's maximum BTU capacity. Review the Allowed Indoor Combinations document below to confirm your configuration before ordering.
Each zone in the dropdown above can be configured with any of the following indoor unit types. Combined BTU must not exceed the outdoor unit capacity. View Allowed Indoor Combinations.
Olivia Series — Wall Mount
Auto-Swing for horizontal louvers
Genius Core ultra-low compressor speed of 12Hz for whisper-quiet operation
The base package includes the CH-36MES-230VO (36K BTU, −13°F). Upgrade to larger BTU or the Hyper (−22°F) series using the Compressor Upgrade dropdown above the add-to-cart button.
Each of the four indoor units operates independently — different temperatures, modes, and schedules per room. Units don't need to run simultaneously.
8 Indoor Unit Types Available
Choose from Olivia Wall Mount, Astoria Wall Mount, Floor Console, Floor/Ceiling Universal, Slim Ducted, Ceiling Cassette, Slim One-Way Cassette, or Air Handler — mixed across zones.
Upgradeable to −22°F Hyper
Select CH-HPR36M, HPR48M, or HPR55M in the Compressor Upgrade dropdown to unlock −22°F operation — the same zone flexibility, cold-climate capable.
High-Efficiency Pipes (54-Tooth)
The outdoor unit's heat exchanger uses 54-tooth pipe design for enhanced surface area and improved heat transfer efficiency vs. standard smooth pipe designs.
Stepless Frequency Adjustment
Inverter control modulates compressor speed continuously to maintain precise room temperature — reducing noise, energy consumption, and temperature swings.
Phased Installation Possible
All indoor units can be connected to the outdoor unit over time — you don't need to install all four zones at once. Start with the zones you need now and add later.
Why Buy From Mini Split Warehouse
Free Nationwide Shipping
No weight limits. No dimensional charges. Free freight delivery on every order.
Factory Warranty Included
Every unit ships with the full manufacturer warranty — no third-party coverage needed.
Lowest Prices Online
We cut out the middleman. Compare us against any competitor — we back our pricing.
20+ Brands Side By Side
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Real Technical Support
Call or email our team. We answer specs, sizing, and installation questions — not scripts.
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Pay by check or bank transfer and get 3% back — one of the easiest savings available.
Can I mix different indoor unit types across the four zones?
Yes. Each zone can be a completely different indoor unit type — for example, an Olivia wall mount in the bedroom, a Ceiling Cassette in the living room, a Slim Ducted unit for the hallway, and an Air Handler for a ducted zone. The multi-zone outdoor unit supports all C&H indoor types. Review the Allowed Indoor Combinations document to confirm your specific combination.
How do I know what total BTU to select for the outdoor unit?
Add the BTU of all four indoor units you're selecting. That combined total must not exceed the outdoor unit's maximum BTU capacity. For example, 4x 9,000 BTU indoor units = 36,000 BTU total — the base CH-36MES-230VO outdoor handles that exactly. Add buffer if you plan to run all zones at full load simultaneously.
Can I install the indoor units at different times?
Yes. C&H multi-zone systems are designed to allow phased installation — you can install one or two zones now and add the remaining zones later, as long as the refrigerant system is properly sealed after each connection. Discuss with your installer to confirm their process.
What is the difference between the base and Hyper outdoor units?
The base CH-MES outdoor units operate down to −13°F. The CH-HPR (Hyper) series extends that to −22°F and includes the High-Frequency Racer Technology for faster startup. If you're in a climate that regularly sees temperatures below −10°F, the Hyper upgrade is the right call. Pricing difference ranges from $450 (36K Hyper) to $1,290 (55K Hyper).
Do all indoor units need to be the same BTU size?
No — you can mix BTU sizes across zones. A common configuration might be 12K in a bedroom, 18K in a larger bedroom, and 24K in the living room. The only rule is that the combined BTU of all zones must not exceed the outdoor unit's rated capacity. Mixed BTU multi-zone builds are fully supported.
Living in an apartment right on the beach is a dreamโbut keeping it cool and dry with the salty air and humidity was a constant battle. After installing the CH 4-Zone Mini Split, I finally feel like I have full control over my indoor comfort. Each zone in my apartmentโliving room, bedroom, guest room, and kitchenโnow has its own temperature setting, which is incredibly useful when the sun hits different areas at different times of the day. The system runs whisper-quiet, which is perfect because I love keeping my sliding doors open to hear the waves without being disturbed by loud AC noise. This unit has been a total game changer for beachfront livingโno more clammy furniture, no more sweating through the afternoons, and no bulky window units ruining the view.
Great Quality, Great Service, Great Price
Steven Hagaman · August 2026
Iโm really happy with this purchase. The service was fast, the price was fair, and the quality of this C&H 2-Zone 25 SEER2 Hyper Heat Mini Split was even better than I expected. Everything arrived in perfect condition, and it has worked great from day one. Itโs hard to find this kind of quality and customer service at such a good price, so I would definitely buy here again.
Overall, itโs been a big win for comfort and energy savings.
Clara M White · April 2025
Each room now has its own vibe, which is great since some of us like it cooler and others want to feel like they're in a sauna. What surprised me the most was how well it handles the coldโweโve had some pretty freezing nights, and this thing kept the house warm without a hitch. Itโs quiet, sleek, and definitely more efficient than I expected.
Consistent temperature
Jimmy Leist · August 2024
We were in dire need of a new AC system after our previous one gave out. So far, this one has exceeded our expectations. The installation wasn't too challenging either. Thanks for putting up with me, even when I was a bit of a handful at times!
A really good company to do business with!
David J · November 2024
I was looking to purchase a 4 zone mini split from one of Mini Split Warehouse competitors. They didn't have a phone number to get in touch with them. So I emailed them to get some initial information. There response was so hurried that they didn't even get my questions answered. Through some searching I found Mini Split Warehouse. They have a phone number, so they answered my questions, helped me with sizing the kit and emailed me a quote for the cost. They have an ongoing communication record so whenever you call or email they know what you were talking about on the last conversation. We bought this system for the air conditioning as our house has no shade what so ever. This last summer was very pleasant to be indoors. A big change from the past.
Excellent! Great Customer Service.. Difficult to find today
L. Newberry · November 2024
This A/C unit is great, and it is very easy to install! I was finally able to replace 4 window units in my home with this one unit, mounted out of sight and using half the power! This product can seem intimidating at first glance for the average homeowner to install, but a great thing about this unit is the installer can choose the difficulty of the install.
Great price and super fast delivery!
Rodney · February 2025
Took about 2 weeks to figure out which unit to go with, there a ton of options! This one has worked out well for us. Keeps the house temp just right. e needed a new system for a mountain home and chose to go with the C&H 4-Zone Mini Split Heat Pump system.
Perfect for our Ice Cream Shop
Josh Hooper · February 2026
We put a high-BTU head in the production kitchen to offset the heat from our batch freezers and smaller units in the scoop shop and storage. Each room stays exactly where we need it. We installed this Cooper & Hunter 4-Zone system to manage the heat in our small-batch creamery, and itโs been a lifesaver. It handles the extreme heat of a commercial kitchen and the sub-zero winters perfectly. High-end performance without the "big brand" price tag.
Excelent Product Excelent Service
M. Robinson · August 2024
The Product is of excellent quality for the price. I have installed several Mini split units from more expensive lines and was pleasantly surprised by the quality of this less expensive unit. Had one small issue with a missing non-essential part. Customer service responded immediately and the correct part was delivered in a few days.
Great Prodcuts and Excellent Service
Allen Searles · January 2025
We've bought multiple mini splits from Mini Split Warehouse for our company. The customer service they provide has been outstanding. I've dealt with the same sales rep for the majority of our purchases. If he isn't available, any other sales rep steps in to help and gets me the products I need. This system I purchased for my home after experiencing how well the 9K mini split in our office works. We will continue to purchase from Mini Split Warehouse
I can definitely recommend the CH 4-Zone
Brian Reed · March 2025
The individual zone control is fantastic. I can set different temperatures for each room, which is perfect for keeping everyone happy. The remote controls are easy to use, and I like how each zone has its own independent settings. The units themselves are sleek and modern. They blend in nicely with my decor. I was worried about noise, but honestly, it's whisper-quiet. I barely even notice it's running.
If you're even thinking about a mini-split, you have to check out this C&H system
C. Alvarez · February 2025
First off, the hyper-heat thing? Seriously, it's not just marketing. We had a few nights dip way below freezing, and the system just kept pumping out warm air like it was nothing. I was expecting a huge energy bill, but with that 23 SEER rating, it's actually been lower than before. I'm still wrapping my head around that. And the quiet! Oh my god, the quiet. I used to hear our old AC unit kick on and off all night. This thing? I barely notice it. It's like a gentle whisper.
Finally
Ralph Davis · September 2025
One of the main reasons I chose this system is the ability to control temperature in four separate zones (rooms). Each indoor unit has its own remote (and WiFi capability), so I can adjust settings room by room. Thatโs a huge benefit, especially since different rooms in my house have very different heating/cooling needs. If I were to do it again, Iโd still pick a multi-zone system, but Iโd invest more in getting a top-notch installer who knows cold-climate mini splits well. If youโre considering this system, make sure: your installer is experienced with multi-zone systems, you size each zone carefully, your climate stays within the performance envelope of the unit, you consider local service & parts logistics.
Living in an apartment right on the beach is a dreamโbut keeping it cool and dry with the salty air and humidity was a constant battle. After installing the CH 4-Zone Mini Split, I finally feel like I have full control over my indoor comfort. Each zone in my apartmentโliving room, bedroom, guest room, and kitchenโnow has its own temperature setting, which is incredibly useful when the sun hits different areas at different times of the day. The system runs whisper-quiet, which is perfect because I love keeping my sliding doors open to hear the waves without being disturbed by loud AC noise. This unit has been a total game changer for beachfront livingโno more clammy furniture, no more sweating through the afternoons, and no bulky window units ruining the view.
Thomas Castro · 2025-07-15
Great Quality, Great Service, Great Price
Iโm really happy with this purchase. The service was fast, the price was fair, and the quality of this C&H 2-Zone 25 SEER2 Hyper Heat Mini Split was even better than I expected. Everything arrived in perfect condition, and it has worked great from day one. Itโs hard to find this kind of quality and customer service at such a good price, so I would definitely buy here again.
Steven Hagaman · 2026-08-04
Overall, itโs been a big win for comfort and energy savings.
Each room now has its own vibe, which is great since some of us like it cooler and others want to feel like they're in a sauna. What surprised me the most was how well it handles the coldโweโve had some pretty freezing nights, and this thing kept the house warm without a hitch. Itโs quiet, sleek, and definitely more efficient than I expected.
Clara M White · 2025-04-18
Consistent temperature
We were in dire need of a new AC system after our previous one gave out. So far, this one has exceeded our expectations. The installation wasn't too challenging either. Thanks for putting up with me, even when I was a bit of a handful at times!
Jimmy Leist · 2024-08-27
A really good company to do business with!
I was looking to purchase a 4 zone mini split from one of Mini Split Warehouse competitors. They didn't have a phone number to get in touch with them. So I emailed them to get some initial information. There response was so hurried that they didn't even get my questions answered. Through some searching I found Mini Split Warehouse. They have a phone number, so they answered my questions, helped me with sizing the kit and emailed me a quote for the cost. They have an ongoing communication record so whenever you call or email they know what you were talking about on the last conversation. We bought this system for the air conditioning as our house has no shade what so ever. This last summer was very pleasant to be indoors. A big change from the past.
David J · 2024-11-09
Excellent! Great Customer Service.. Difficult to find today
This A/C unit is great, and it is very easy to install! I was finally able to replace 4 window units in my home with this one unit, mounted out of sight and using half the power! This product can seem intimidating at first glance for the average homeowner to install, but a great thing about this unit is the installer can choose the difficulty of the install.
L. Newberry · 2024-11-15
Great price and super fast delivery!
Took about 2 weeks to figure out which unit to go with, there a ton of options! This one has worked out well for us. Keeps the house temp just right. e needed a new system for a mountain home and chose to go with the C&H 4-Zone Mini Split Heat Pump system.
Rodney · 2025-02-05
Perfect for our Ice Cream Shop
We put a high-BTU head in the production kitchen to offset the heat from our batch freezers and smaller units in the scoop shop and storage. Each room stays exactly where we need it. We installed this Cooper & Hunter 4-Zone system to manage the heat in our small-batch creamery, and itโs been a lifesaver. It handles the extreme heat of a commercial kitchen and the sub-zero winters perfectly. High-end performance without the "big brand" price tag.
Josh Hooper · 2026-02-03
Excelent Product Excelent Service
The Product is of excellent quality for the price. I have installed several Mini split units from more expensive lines and was pleasantly surprised by the quality of this less expensive unit. Had one small issue with a missing non-essential part. Customer service responded immediately and the correct part was delivered in a few days.
M. Robinson · 2024-08-13
Great Prodcuts and Excellent Service
We've bought multiple mini splits from Mini Split Warehouse for our company. The customer service they provide has been outstanding. I've dealt with the same sales rep for the majority of our purchases. If he isn't available, any other sales rep steps in to help and gets me the products I need. This system I purchased for my home after experiencing how well the 9K mini split in our office works. We will continue to purchase from Mini Split Warehouse
Allen Searles · 2025-01-15
I can definitely recommend the CH 4-Zone
The individual zone control is fantastic. I can set different temperatures for each room, which is perfect for keeping everyone happy. The remote controls are easy to use, and I like how each zone has its own independent settings. The units themselves are sleek and modern. They blend in nicely with my decor. I was worried about noise, but honestly, it's whisper-quiet. I barely even notice it's running.
Brian Reed · 2025-03-20
If you're even thinking about a mini-split, you have to check out this C&H system
First off, the hyper-heat thing? Seriously, it's not just marketing. We had a few nights dip way below freezing, and the system just kept pumping out warm air like it was nothing. I was expecting a huge energy bill, but with that 23 SEER rating, it's actually been lower than before. I'm still wrapping my head around that. And the quiet! Oh my god, the quiet. I used to hear our old AC unit kick on and off all night. This thing? I barely notice it. It's like a gentle whisper.
C. Alvarez · 2025-02-28
Finally
One of the main reasons I chose this system is the ability to control temperature in four separate zones (rooms). Each indoor unit has its own remote (and WiFi capability), so I can adjust settings room by room. Thatโs a huge benefit, especially since different rooms in my house have very different heating/cooling needs. If I were to do it again, Iโd still pick a multi-zone system, but Iโd invest more in getting a top-notch installer who knows cold-climate mini splits well. If youโre considering this system, make sure: your installer is experienced with multi-zone systems, you size each zone carefully, your climate stays within the performance envelope of the unit, you consider local service & parts logistics.
Ralph Davis · 2025-10-01
Why Ductless Mini Splits
Experience superior comfort and energy savings with ductless mini splits, featuring industry-leading technology. These AHRI-certified mini splits use inverter technology and variable-speed DC inverter operation for optimal efficiency and quiet operation, with exceptional SEER2 performance that exceeds standard SEER ratings. Whether you prefer a wall mount, ducted, floor or ceiling-cassette design, these split air conditioner units give you zone control for precise heating and cooling in your home.
Key features:
Single or multi-zone capability for customized comfort
High-efficiency ductless design minimizes energy loss
Quiet operation for a peaceful living environment
Improved air quality with advanced filtration options
Flexible installation for any home layout
Manufacturer warranty included
Works With Alexaโพ
Control your mini split with Alexa or Google Assistant, or remotely with an Android or iOS phone via Wi-Fi. Set schedules and control multiple rooms from anywhere — change your temperature settings from the office or while traveling, as long as you have an internet connection.
Energy-Star Certifiedโพ
Our efficient mini splits are Energy-Star certified. With ultra-efficient ductless air conditioners you can expect to save upwards of 50–60% on your energy bills yearly — a great system for heating and cooling a home or business while minimizing long-term energy costs.
Heating and Cooling (to -13F/-22F)โพ
Our Ultra-DC-Inverter technology lets these systems provide cooling and heating at up to −13°F/−22°F with up to 100% efficiency, so hyper-rated models can serve as your primary heat source all year round — even in the coldest climates. The hyper feature is available on most of our mini splits.
Auto Leak Detection and Diagnosisโพ
Our ductless mini splits include self-cleaning, leak detection and self-diagnostics — all there to keep the system running properly for years. Enjoy peace of mind knowing your mini split will warn you of any equipment problems.
DC ULTRA Inverter Technologyโพ
The DC Ultra inverter compressor delivers a superb reduction in energy consumption, making these some of the most efficient systems with DC-inverter technology — it's what pushes mini splits to high SEER2 certifications while minimizing your energy costs.
Air Conditioner Size Chartโพ
What BTU/ton for your area?
Square footage
BTU (ton)
100–200 sq ft
6,000 BTU | ½ ton
150–400 sq ft
9,000 BTU | ¾ ton
400–600 sq ft
12,000 BTU | 1 ton
600–800 sq ft
18,000 BTU | 1.5 ton
800–1,200 sq ft
24,000 BTU | 2 ton
1,200–1,500 sq ft
30,000 BTU | 2.5 ton
1,500–1,800 sq ft
36,000 BTU | 3 ton
1,800–2,000 sq ft
48,000 BTU | 4 ton
2,000–2,500 sq ft
60,000 BTU | 5 ton
Use this BTU/ton size chart to size your mini split indoor or outdoor unit.
What Nobody Tells You Before You Buyโพ
If you are looking for mini splits, most sellers cover the basics: an outdoor compressor connected to indoor units via small refrigerant lines, high energy efficiency without duct loss, and separate room temperatures — plus the simple setup needing just a small 3-inch wall opening. All true, but there are critical technical details and long-term ownership realities almost nobody tells you before you buy.
Beyond washing your mesh air filters every few weeks, mini splits need a deep chemical cleaning of the internal blower wheel and evaporator coil every 1–2 years. Because the heads recirculate the air in your living space, neglected moisture can breed toxic black mold inside the barrel fan. And while most guides cover summer condensation draining from the indoor head, heat pumps reverse in winter: during freezing weather the outdoor unit sheds gallons of water in defrost cycles — without a base pan heater or proper drainage that runoff freezes solid, destroying fan blades and icing the compressor base.
Finally, budget for electrical and warranty requirements upfront. A multi-zone system frequently requires upgrading your home's main electrical panel — often from 100-amp to 200-amp service — plus dedicated 208/230V double-pole breakers. Most importantly, beware of online DIY claims: almost every major manufacturer explicitly voids your multi-year parts and compressor warranty unless a licensed HVAC technician performs the final nitrogen pressure test, line evacuation, and refrigerant commissioning.
Mini Split Warehouse offers a wide selection of ductless air conditioners and split heat pumps, providing free shipping nationwide.