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TOSOT 36,000 BTU 4 Zone Mini Split Air Conditioner 21 SEER2, Cosmo Series

Based on 9 reviews
Condition: New
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$2,899.00
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Availability: In Stock.
Fulfilled by Sain Store

Arrives Nov 7 – Nov 15
Order within 6 hours and 9 minutes

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At a glance

Condition
New
Set
Quad Zone: 36,000 BTU (9K+9K+9K+9K)
Model
TST-MZ-M36-Q9999
Capacity
3 tons
Dimensions
40.2"D x 16.8"W x 32.5"H
Weight
338.8 lb
Color
White
In the box
RemoteUser Manual
Warranty
5-Year Warranty

Features 5

  • Individual Temp. Control: Manage temperatures in four spaces using one 36,000 BTU outdoor unit with four 9,000 BTU indoor units; customize temperatures from 61-86F and select different modes for each room to meet varying needs
  • Cost Saving: With a rating of 21 SEER2 and 10 HSPF2, the TOSOT Cosmo series multizone system saves up to 24% on energy costs compared to conventional units rated at 16 SEER2; Energy Star-certified and eligible for federal tax rebate
  • Extreme Weather Resilience: Features an advanced compressor; operates in ambient temperatures from -22F to 118F; performs well year-round in hot states like Arizona or cold regions like Michigan; intelligent defrost function enhances heating efficiency
  • Easy Installation: No ductwork or vents needed; lower installation costs compared to central AC systems; maintenance and repairs for each indoor unit are straightforward; includes a 16.4-foot copper pipe set, but does not include the power cord

Description

One outdoor unit supports up to four wall-mounted indoor units (9K/12K/18K/24K BTU models), allowing independent temperature and mode control for different rooms. The advanced inverter compressor fine-tunes performance for whisper-quiet operation, producing sound levels as low as 22 dB to 36 dB, making it ideal for bedrooms, home offices, nurseries, and other quiet areas where noise matters The dehumidification function removes excess moisture from the air, improving indoor air quality. It creates a fresher and more comfortable space, making living space more enjoyable year-round TOSOT Cosmo series multi-zone mini-split system offers a wide range of configurations to suit different needs. Suitable for multi-room temperature control TOSOT Cosmo series multi-zone mini-split system comes with a well-equipped accessory kit, as shown in the image, to assist with installation 1. Your order may be shipped in multiple packages or on pallets and arrive at different times. If you’ve received only part of your order, additional boxes may still be on the way. If you have any questions about your order, we're here to help. 2. Please ensure that all packages have arrived before scheduling your professional installation appointment. 3. Due to the product's weight, it will be shipped via freight. To ensure smooth delivery, please include a reachable number in case the freight carrier needs to confirm details.

Specs 36

Brand TOSOT
Capacity 3 tons
Cooling Power 36000 british thermal units
Special Feature Fast Cooling, Heating & Cooling Function, Inverter Compressor, Remote Controlled, WiFi Enabled
Product Dimensions 40.2"D x 16.8"W x 32.5"H
Seasonal Energy Efficiency Ratio (SEER) 21
Color White
Voltage 230 volts

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Nov 7 – Nov 15

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


The best value for the best quality
Set name: Dual Zone: 36,000 BTU (12K+24K)
Arrived ten days early. Just started the installation. More to follow. The indoor units are quite attractive. Waiting for wall mounting. More to follow
Reviewed in the United States on May 23, 2026 by John Davis

Works great and great value.
Set name: Dual Zone: 36,000 BTU (12K+24K)
Very happy with this unit. I heat and cool two separate rooms. A 950 ft shop with 12' ceilings and a 450 sq ft apartment. Both rooms are well insulated. I was using a wood stove for the shop. This unit was so efficient I can heat both for the price of just heating the apartment with a ptac unit.
Reviewed in the United States on March 7, 2026 by kingbling

Split air-conditioner
Set name: Tri Zone: 36,000 BTU (12K+12K+12K)
I have this since summer, at summer time we are happy using it because it helps a lot to make my 3 rooms cold, but now that is winter the problem is you can’t used heater while other room is using air conditioner it gives you error, and even we reset still give us error so I need to wait until tomorrow and will work. Installing it is not hard because we got someone who knows how to install this kind of product, the energy is not bad, I don't think our bill went up high when we install this. It didn’t take so much space on our wall. ... show more
Reviewed in the United States on January 9, 2026 by BunsoLyn18

El producto es muy bueno
Set name: Quad Zone: 36,000 BTU (9K+9K+9K+9K)
El producto en el frío calienta súper bien la habitación no puedo quejarme vivo frente a un lago en NJ enero se congela y el mini esplit de 4 zonas de 36000 btu cada unidad de 9000 btu por habitación calienta súper bien, las instrucciones para instalarlo son muy bien explicadas si eres un poco aventurero con las indicaciones tú mismo lo puedes instalar nota tienes que usar cable número 8 y un breake número 40 regular porque si usas el que es seifti se dispara al poner la calificación solo funciona en frío pero si poner el regular funciona de lo mejor y es muy silencioso n pocas palabras me siento feliz de aver comprado este producto. ... show more
Reviewed in the United States on February 8, 2025 by Pedro Monge

The best buy in air conditioning Ive
Set name: Tri Zone: 36,000 BTU (12K+12K+12K)
I don't know why I waited so long. The A/C dispensing units work better than any home unit I have ever had. I would recommend this product over-and-over-again. I can control the temperature almost instantly, it's incredible!!
Reviewed in the United States on August 17, 2025 by Jack Heller

I wouldn’t recommend having bought one myself and work in the hvac trade
Set name: Quad Zone: 36,000 BTU (9K+9K+9K+9K)
This company does not supply on the phone tech support it’s through email and it takes forever. On top of that they DO NOT supply repair parts. If something fails, you will need the entire unit. Again they don’t parts at all.. these cannot be repaired. Buy a Senville or another brand that offers parts and tech support. Tosot fails at both of these. Don’t buy. ... show more
Reviewed in the United States on July 24, 2025 by Figs
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