Product Description

MRCOOL DIYHH-18 Hyper Heat 18K Complete DIY Mini Split Bundle 230V

Overview

The MRCOOL DIYHH-18 Hyper Heat 18K Mini Split is the fifth generation cold-climate system designed for year-round heating and cooling performance. It maintains full heating output down to minus 22 degrees Fahrenheit. This DIY bundle includes a Hyper Heat condenser and a 25 foot factory-sealed No-Vac QuickConnect pre-charged line set filled with R-454B refrigerant, eliminating the need for vacuum pumps and refrigerant handling. The system supports efficient conditioning for spaces up to 800 square feet, suitable for areas such as garages, bonus rooms, basements, offices, or cabins. It features an inverter compressor that adjusts dynamically for stable performance without rapid cycling. The bundle includes full smart controls via Wi-Fi and voice assistants, along with gold corrosion protection and quiet operation under 58 decibels.

Benefits

  • Reliable heating performance down to minus 22 degrees Fahrenheit
  • DIY installation with factory-sealed QuickConnect line set
  • Consistent room temperature with inverter technology
  • Lower energy costs compared to space heaters or portable units
  • Quiet operation with noise levels below 58 decibels
  • Future-ready refrigerant system using R-454B
  • Durable construction suitable for various indoor and semi-outdoor spaces

Features

  • Hyper Heat inverter compressor for extreme cold operation
  • R-454B pre-charged refrigerant line set included
  • SmartHVAC app compatibility with Amazon Alexa and Google Assistant
  • Automatic mode, dry mode, sleep mode, timer, and auto-restart
  • 25 foot pre-charged No-Vac QuickConnect line set included
  • Gold Fin corrosion protection for humid or coastal environments
  • Single zone ceiling cassette air handler with reusable filter and multiple modes
  • Energy Star certified and AHRI certified
  • 7-year compressor warranty and 5-year parts warranty with optional lifetime replacement through registration

Specifications

  • Heating and Cooling Capacity: 18,000 BTU
  • Voltage: 208 to 230 Volts
  • Phase: Single phase
  • Frequency: 60 Hertz
  • SEER2 Rating: 21.2
  • HSPF2 Rating: 11
  • Maximum Coverage Area: 800 square feet
  • Refrigerant Type: R-454B
  • Inverter: Yes, Hyper Heat technology
  • Minimum Ambient Temperature Heating: minus 22 degrees Fahrenheit
  • Minimum Ambient Temperature Cooling: minus 22 degrees Fahrenheit
  • Noise Level: 58 decibels
  • Compressor Type: Rotary
  • Metering Device: Electronic expansion valve (EEV)
  • Maximum Fuse or Breaker Size: 25 Amps
  • Minimum Circuit Ampacity: 19 Amps
  • Included Line Set: 25 foot pre-charged QuickConnect No-Vac
  • Liquid Line Diameter: 1/4 inch
  • Suction Line Diameter: 1/2 inch
  • Maximum Line Length: 75 feet
  • Ceiling Cassette Capacity: 12,000 or 18,000 BTU depending on installation
  • Ceiling Cassette Coverage: up to 550 square feet
  • Ceiling Cassette Mount Type: Flush ceiling for 16 inch joists
  • Ceiling Cassette Noise Level: 24 to 41 decibels
  • Ceiling Cassette Air Direction: One-way low profile
  • Ceiling Cassette Filter: Reusable
  • Ceiling Cassette Modes: Auto, Sleep, Dry, Fan only
  • Ceiling Cassette Electrical Breaker Size: 15 Amps dedicated
  • Ceiling Cassette Minimum Circuit Ampacity: 3 Amps

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