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MRCOOL DIY 5th Gen Multi-Zone 2-Zone 18,000 BTU 24 SEER2 (6K + 12K) Ductless Mini-Split Air Conditioner and Heat Pump

MRCOOL DIY 5th Gen Multi-Zone 2-Zone 18,000 BTU 24 SEER2 (6K + 12K) Ductless Mini-Split Air Conditioner and Heat Pump

4.5(2 ratings)

Best price now

$3,155.00at Chill Mini SplitsChecked Nov 9

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Price facts

  • Last seen at $3,155.00 at Chill Mini Splits on Nov 9.

Our take on the MRCOOL DIY 5th Gen Multi-Zone 2-Zone 18,000 BTU 24 SEER2 (6K + 12K) Ductless Mini-Split Air Conditioner and Heat Pump

The MRCOOL DIY 5th Gen Multi-Zone is a ductless heat pump system with an 18,000 BTU outdoor condenser feeding two wall-mounted air handlers, a 6,000 BTU unit for roughly 200 sq ft and a 12,000 BTU unit for roughly 600 sq ft. It heats and cools, running in reverse in winter, and uses a pre-charged quick-connect line set so a homeowner can install it without a vacuum pump or brazing torch. The 24 SEER2 rating and DC inverter compressor put it among the more efficient DIY multi-zone kits. It suits owners who want two-zone comfort without paying an installer, though the condenser supports up to three indoor heads and the 27,000 BTU model is the step up for four rooms.

Best forHomeowners adding AC to two rooms without an HVAC contractorGarage, addition or converted attic that needs both heat and coolingBuyers who want app control and a sealed pre-charged systemReplacing window units in two separate spaces
Pros
  • Pre-charged quick-connect line set allows DIY install without special tools
  • 24 SEER2 inverter efficiency
  • Heats as well as cools, down to low outdoor temperatures
  • Two different head sizes match a small and a larger room
  • Smartphone app control
  • 7-year compressor, 5-year parts warranty
Cons
  • Condenser supports up to three heads, so a third zone means another head
  • Line sets are pre-charged in fixed lengths, limiting placement
  • DIY install still needs an electrical circuit and outdoor mounting
  • Two heads only; larger homes need the 27,000 BTU model

MRCOOL DIY 5th Gen Multi-Zone 2-Zone 18,000 BTU 24 SEER2 (6K + 12K) Ductless Mini-Split Air Conditioner and Heat Pump prices at every store

  • Chill Mini SplitsNew

    In stockReturn policy

    $3,155.00Checked Nov 9
    Visit Chill Mini Splits

About the MRCOOL DIY 5th Gen Multi-Zone 2-Zone 18,000 BTU 24 SEER2 (6K + 12K) Ductless Mini-Split Air Conditioner and Heat Pump

This MRCOOL DIY 5th Gen Multi-Zone system is a ductless mini-split heat pump that heats and cools two zones from one 18,000 BTU condenser. It comes with two indoor air handlers, one 6,000 BTU and one 12,000 BTU. They cover approximately 200 and 600 square feet respectively. As a heat pump, it runs in reverse to pull heat from outdoors in heating mode.

It is designed for do-it-yourself installation without special tools or training. The system uses pre-charged Quick Connect line sets filled with R-454B refrigerant. The line sets are sold separately. The included DIYPro cable removes the need for electrical conduit. The condenser can support up to three indoor units.

The Smart HVAC app and controller module work with Amazon Alexa and Google Assistant. Through the app you can set schedules, temperature ranges and operating mode. The included remote has a Follow Me function that tracks the air temperature around you. The system also has a DC inverter, a 100% sealed system, a Gold Fin condenser and low ambient cooling.

Model
DIY-MULTI3-18HP230D-O
Series
DIY 5th Gen Multi-Zone Mini-Splits
Type
Ductless mini-split heat pump (heating and cooling)
Zones
2 indoor units included (6,000 BTU and 12,000 BTU); condenser supports up to 3
Cooling capacity
18,000 BTU
Heating capacity
18,000 BTU
Tonnage
1.5
Coverage
About 200 sq ft (6K unit) and 600 sq ft (12K unit); up to 750 sq ft combined with three air handlers
SEER2
23.9
EER2
13
HSPF2
10 (HSPF2-4); 7.8 (HSPF2-5)
Refrigerant
R-454B
Controls
Remote with Follow Me function; Smart HVAC app; Amazon Alexa and Google Assistant support
Installation
DIY, with pre-charged Quick Connect line sets (sold separately) and included DIYPro cable
Certification
Intertek listed 5031495
Warranty
7-year compressor, 5-year parts; Limited Lifetime Replacement with enrollment in the MRCOOL Care Program
Support
Lifetime technical support

Questions and answers

Can I really install this myself?
MRCOOL designed it for DIY: the line set comes pre-charged with quick-connect fittings, so no vacuum pump or brazing is needed. You still need a 240V circuit, a mounting spot for the condenser and basic tools.
How many rooms can the 18,000 BTU condenser handle?
It ships with a 6,000 BTU and a 12,000 BTU head, covering roughly 200 and 600 sq ft. The condenser can support up to three indoor units, so one more head can be added.
Does it heat in cold weather?
Yes. It is a heat pump and runs in reverse to pull heat from outdoor air. Output drops as temperatures fall, so check the rated operating range for your climate.
What is the difference from the 27,000 BTU model?
The 27,000 BTU DIY Multi supports up to four indoor units and covers more square footage. The 18,000 BTU version tops out at three zones.
What comes in the box?
The outdoor condenser, the 6,000 and 12,000 BTU indoor air handlers, pre-charged quick-connect line sets and the manufacturer warranty paperwork.
What warranty is included?
Seven years on the compressor and five years on parts from MRCOOL.
Where is the MRCOOL DIY 5th Gen Multi-Zone 2-Zone 18,000 BTU 24 SEER2 (6K + 12K) Ductless Mini-Split Air Conditioner and Heat Pump cheapest?
At Chill Mini Splits, for $3,155.00, as of our latest check.
What do buyers say about the MRCOOL DIY 5th Gen Multi-Zone 2-Zone 18,000 BTU 24 SEER2 (6K + 12K) Ductless Mini-Split Air Conditioner and Heat Pump?
Rated 4.5 out of 5 from 2 ratings.

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