• 888-815-9763 Sales & Support Mon - Fri, 8am - 5pm PST. Instagram Facebook Twitter Google +



Early Summer Sale!

Save big lighting, controllers and more!

Complete Grow Tent Packages

Start growing indoors today!

Complete Nutrient Packages

Save now on complete plant nutrition!

Hydrobuilder Warehouse Deals

Sale items at rock-bottom prices!

Aura Systems 21,000 BTU Mini-Split Air Conditioner with Quick Connect

Item #: ACAU21QC

Be the first to review this product

Aura Systems
Your Price:

In Stock

In stock items ship within 24 hours
FREE Shipping!

100% Discreet Shipping Price Match Guarantee The HB Difference

Warranties | Returns & Replacements

24,000 BTU Air Conditioner with Quick Connect Option

Additional Images


Product Details

Aura Systems is one of the first companies to offer ductless mini-split air conditioners designed for the Hydroponics industry. All of our units include industry leading features and a 1-year warranty. The Aura AC units are ETL Listed and Energy Star Approved.

Aura Systems line of ductless mini-split DC Inverter air conditioners are both efficient, dependable, and affordable. Constructed of high-quality Japanese internal components using the highest grade pure copper coils and lines, these units are perfect for both residential and light commercial applications.

The Aura AU-021 produces 21,000 BTU's power which is enough to heat/cool 950 sq/ft of living space, or 6,000 Watts.

These units also feature the easiest, most reliable quick-connect fitting available which will save you time and money on the installation.

Technical Specifications:

  • ETL Listed and Energy Star Approved
  • Cooling Capacity: Btu/h: 21,000, kW: 7.03
  • Electrical Parts: Power Supply: 208-230V/60 H/1 Ph, Power Input: 2000 Watts, Current: 8.8 Amps
  • Performance: Dehumidifying: 1.7kg/hr
  • Air Flow Volume (Indoor): 1300 / 1150 / 1020
  • Air Flow Volume (CFM): 765 / 677 / 600
  • Noise Level (Indoor): 50 / 47 / 44 db(A)
  • Noise (Outdoor): 59 db(A)

Product Dimensions:

  • Net Dimensions (INDOOR UNIT): 49-3/16″ x 12-13/16″ x 9-1/16″ (W x H x D)
  • Net Dimensions (OUTDOOR UNIT): 35-4/16″ x 33-14/16″ x 13″ (W x H x D)
  • Packing Dimensions (INDOOR UNIT): 52-15/16″ x 16-15/16″ x 13-3/16″ (W x H x D)
  • Packing Dimensions (OUTDOOR UNIT): 41-1/16″ x 36″ x 15-9/16″ (W x H x D)
  • Net Weight (INDOOR UNIT): 40 lbs
  • Net Weight (OUTDOOR UNIT): 150 lbs
  • Gross Weight (INDOOR UNIT): 55 lbs
  • Gross Weight (OUTDOOR UNIT): 160 lbs
  • Piping Size (LIQUID): 3/8″
  • Piping Size (GAS): 5/8″

Product Documents

ACAU24 Installation Guide

ACAU24 Owners Manual

ACAU24 Troubleshooting



Air Conditioning Units Mini-Split
BTU Rating 21,000
Cord Length 25'
Amps 8.8
Watts 2,000
Voltage 208-230V/60 H/1 Ph
Brand Aura Systems
ETL Listed Yes
Free Shipping Yes
Warranty Yes
Weight (lb.) 190
Height (in.) 12 13/16
Width (in.) 49 3/16
Length (in.) 9 1/16

Shipping Info:

Free Shipping

Item Ships On A Pallet Via Motor Freight  Learn More

Questions about this product?
Contact us for advice or more details. Our product specialists are here to help.
Email an Expert
Report an issue on this page

Why Shop with Hydrobuilder?
We offer the best service and support in the industry. Your complete satisfaction is our goal.
  • Fast Shipping
  • Lifetime Product Support
  • Quick & Easy Returns
  • Secure Payment Options