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GREE GWH12TB-D3DNA1A

12,000 BTU 25 SEER TERRA Wall Mount Ductless Mini Split Air Conditioner Heat Pump 208-230V
SKU : GWH12TB-D3DNA1A
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About this Item

FREE LINE SET WITH THIS PURCHASE! See Product Description for Details. 25 SEER / 12.8 EER / 9.0 HSPF - System Includes: GWH12TBD3DNA1AO, GWH12TBD3DNA1AI
  • Energy Star Estimated Cooling Cost: $127
  • SEER: 25
  • Room Size: 350 - 500 ft2
This item has been retired by the manufacturer and is no longer available. You may find similar products by viewing our selection of Heating & Cooling below.
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Warranty Included (5 Year) View Details
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About this Item

FREE LINE SET WITH THIS PURCHASE! See Product Description for Details. 25 SEER / 12.8 EER / 9.0 HSPF - System Includes: GWH12TBD3DNA1AO, GWH12TBD3DNA1AI
  • Energy Star Estimated Cooling Cost: $127
  • SEER: 25

Product Highlights

FREE LINE SET SPECIAL!   For a limited time only, this system comes with a free JMF Line Set Kit. To view or purchase this system bundled with a free line set kit of 15' or 25' please follow the links below.

GREE Terra 12,000 BTU Ductless Mini-Split 208/230V with JMF 1/4" x 1/2" x 15' Line Set Kit
GREE Terra 12,000 BTU Ductless Mini-Split 208/230V with JMF 1/4" x 1/2" x 25' Line Set Kit

Outdoor: GWH12TBD3DNA1AO
Indoor: GWH12TBD3DNA1A


The GREE Terra Ultra High-Efficiency Ductless Mini-Split Heat Pump System is among the most efficient mini-splits with Seasonal Energy Efficiency Ratings of up to 27-SEER. This is a simple straightforward system containing an indoor cabinet, outdoor compressor, wireless remote and remote cradle. The GREE Terra does not require bulky duct work making installation simple, fast and cost effective.

Features & Benefits:

  • Highest Efficiency - G10 Inverter Technology
  • 4-Way Airflow Operation (Swing)
  • Extended Airflow (9k & 12k sizes)
  • Waterfall Heating Airflow
  • 7 Fan Speeds
  • Gold Fin Condenser
  • Photocatalytic Filter
  • I-Feel Automatic Function
  • Low Ambient Cooling, 5°F (208-230V systems Only)
  • Low Voltage Start-Up
  • Intelligent Defrost
  • Intelligent Pre-Heating
  • Comfortable Sleep Mode
  • Auto Clean
  • Dry Anti-Mildew Design
  • LED Display
  • Automatic Operation
  • Self-Diagnosis
  • Memory Function
  • 24-Hour Timer
  • Control Lock
  • Fan Delay Function
  • Energy Saving Function
  • Slim, Compact and Stylish Design

How many BTUs do I need for my ductless split?

Please Note: Mini Split Systems must be installed by a licensed Contractor with an EPA Refrigerant Certification to qualify for warranty.

(BTU ratings are estimates only, based on 10ft ceilings, with great insulation and windows. Some factors may alter this calculation: lack of insulation, heavy sun, excessively hot regions, & tall ceilings)

9,000 BTU       350 sqft12,000 BTU     500 sqft18,000 BTU     750 sqft24,000 BTU     1,000 sqft30,000 BTU     1,250 sqft36,000 BTU     1,500 sqft

Make sure you install a unit that is going to properly cool your square footage. An over-sized air conditioner is actually less effective — and wastes energy at the same time. Air conditioners remove both heat and humidity from the air. If the unit is too large, it will cool the room quickly, but only remove some of the humidity. This leaves the room with a damp, clammy feeling. A properly sized unit will remove humidity effectively as it cools.

Which Line Set Kit Do You Need?

This unit uses a 1/4" x 1/2" line set. These are sold separately, and you can choose from our 15 ft, 25 ft, and 50 ft lengths. Length is dependent on the needs of your project and how you will set up the system (distance from condenser to indoor air handlers).

Can I install this myself?

While installation of a ductless split is much easier than a central air system, it’s still much more advanced than installing a window unit or portable. Furthermore, the manufacturer warranty is only valid if a licensed professional does the installation. So while it is possible to do the installation yourself, we strongly recommend you hire an HVAC professional in your area.

Is this backed by a warranty?

Yes, it comes fully backed by a manufacturer's warranty, and ComfortUp is an authorized online seller of these systems. Our customer support team will provide assistance should you ever need to file a warranty claim with the manufacturer. Please be aware that only systems that are installed by a licensed HVAC contractor are backed by the warranty. Proof of licensed installation is required. The receipt/invoice from the contractor should be sufficient.

Brand GREE
Model Family Terra
Equipment Type Heat Pump
SEER 25.00
EER (Energy Efficiency Ratio) 12.8
Refrigerant R-410a
HSPF (Heating Seasonal Performance Factor) 9.0
Rated Cooling Capacity (BTU) 12,000
Rated Heating Capacity (BTU) 13,000
Nominal Capacity (BTU) 12,000
Voltage 208-230 VAC
Minimum Circuit Amps 20
Number of Zones/Rooms 1
Color White
Inverter Technology Yes
Mounting Type Wall Mount
Warranty Offered 5/7 All parts are warranted for a period of five (5) years to the original registered end-user with proof of proper installation. The compressor is warranted for a period of seven (7) years to the original registered end-user with proof of proper installation.
Energy Star Rated Yes
Wireless No
Corrosion Protection Yes
Filter Type Washable
Maximum Cooling Capacity 13000
Minimum Cooling Capacity 3100
Liquid/Gas Line Set Size 1/4" X 1/2"
Minimum Heating Capacity 2400
Sound Pressure Rating 26 dB(A)
Maximum Heating Capacity 14000
4-Way Remote Air Flow Control Yes
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