Description
Overview
This Tosot Cosmo dual-zone system pairs the GWHD(36)ND6MO multi-zone outdoor unit with 2 Cosmo wall-mounted indoor units (18K + 18K). Each room gets its own indoor unit, remote and schedule, while one outdoor unit handles the whole system. It is rated at 21 SEER2 and 10 HSPF2, carries the ENERGY STAR label, and runs on 208/230V single-phase power with R32 refrigerant.
It is a practical choice for homes, condos, additions and small offices that need comfort in several rooms without ductwork. Every indoor unit ships with its own 16 ft line set, and the outdoor unit supports up to 328 ft of total piping for flexible layouts.
Key Features
- One outdoor unit, multiple rooms: Each indoor unit has its own remote, schedule and setpoint through the TOSOT+ app.
- 21 SEER2 / 10 HSPF2: ENERGY STAR certified with up to 24% energy savings versus conventional 16 SEER2 systems.
- Extreme-weather operation: Cooling up to 118°F and heating down to -22°F outdoor.
- Long piping capability: Up to 328 ft total piping and 82 ft vertical separation for large and multi-level homes.
- Refrigerant leak sensor: The system shuts down and raises an alert if a leak is detected.
- R32 refrigerant: Efficient, lower-GWP refrigerant.
- Energy Star certified: Rated at 21 SEER2 and COP 12
- Noise level: 23-40dB
- Works in harsh conditions (-22°F to 118°F)
- WiFi control
- All accessories included. Lineset standard size 16ft.
Performance & Efficiency
Rated capacity is 36,000 BTU/h cooling and 36,000 BTU/h heating, with an EER/COP of 3.52 / 3.56 W/W. The inverter compressor ramps up quickly to reach the setpoint, then slows down to hold it, which avoids the on/off cycling of single-speed equipment and cuts power use. The system cools in outdoor temperatures up to 118°F and heats down to -22°F.
Comfort & Control
Every indoor unit includes a wireless remote, and the TOSOT+ app adds Wi-Fi control, scheduling and voice control through Alexa or Google Home. Sleep, quiet and turbo modes, auto restart after a power outage and a dehumidification (dry) mode are built in.
Specifications
System Performance
| Outdoor Unit Model | GWHD(36)ND6MO |
|---|---|
| Cooling Capacity | 36,000 BTU/h |
| Heating Capacity | 36,000 BTU/h |
| SEER2 / HSPF2 | 21 / 10 |
| EER / COP | 3.52 / 3.56 W/W |
| Zones in this Package | 2 (18K + 18K) |
| Maximum Zones (outdoor unit) | 4 |
| Outdoor Operating Range | -22 to 118°F |
| Power Supply | 208/230V, 1Ph, 60Hz |
| Rated Current (cool / heat) | 21.73 / 22.6 A |
| Rated Input (cool / heat) | 3,000 / 2,960 W |
| Minimum Circuit Ampacity (MCA) | 30 A |
| Max Overcurrent Protection (MOP) | 45 A |
| ENERGY STAR | Yes |
Outdoor Unit
| Model | GWHD(36)ND6MO |
|---|---|
| Compressor | DC inverter |
| Outdoor Airflow | 3,413 CFM |
| Sound Level | 63 dB(A) |
| Dimensions (H x W x D) | 40.16 x 16.81 x 32.52 in |
| Net Weight | 173.1 lb |
Indoor Unit – 18,000 BTU Wall Mounted (qty 2)
| Model | SU-COSMO18-230/I |
|---|---|
| Capacity | 18,000 BTU/h |
| Airflow (high) | 618 CFM |
| Sound Level (high / low) | 53 / 30 dB(A) |
| Power Supply | 208/230V, 60Hz (from outdoor unit) |
| Dimensions (H x W x D) | 37.1 x 13.1 x 9.7 in |
| Net Weight | 28.7 lb |
Line Sets & Piping
| Included Line Sets | One 16 ft pre-flared copper line set per zone (25 ft / 50 ft available) |
|---|---|
| Line Sizes at Outdoor Unit | 1/4" liquid / 3/8" gas per port |
| Max Total Piping | 328 ft |
| Max Vertical Separation | 82 ft |
| Refrigerant | R32 |
What's Included
- 1 x GWHD(36)ND6MO multi-zone outdoor unit
- 2 x 18,000 BTU Cosmo wall-mounted indoor unit with remote
- 2 x 16 ft pre-flared copper line sets with signal cables
Installation
Professional installation by a licensed HVAC technician is recommended to protect performance and warranty coverage. Plan the indoor unit location, line set route, condensate drain and a dedicated electrical circuit before ordering.
Frequently Asked Questions
Is this a heat pump?
Yes. It provides both cooling and heating.
What warranty does it carry?
Tosot covers the system for 5 years.
Can I control it from my phone?
Yes. The TOSOT+ app provides Wi-Fi control, schedules and voice control with Alexa and Google Home.
White Paper
