SKU: 52154356676

MRCOOL DIY 5th Gen 5-Zone 45,000 BTU Ductless Mini Split Air Conditioner & Heat Pump with Pre-Charged Line Sets (9K+9K+9K+9K+9K), DIYM555HP

Sale price$3421.80 Regular price$3802.00
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USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 17 - Aug 22

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Description

MRCOOL DIY 5th Gen 5-Zone 45,000 BTU Ductless Mini Split Air Conditioner & Heat Pump with Pre-Charged Line Sets (9K+9K+9K+9K+9K), DIYM555HPTake control of your comfort with the MRCOOL DIY 5th Gen Multi Zone Mini Split System the easiest and most affordable way to get powerful, energy saving heating and cooling without hiring a pro. Five Rooms, Perfect Comfort: Heat or cool five spaces that are 350 sq. ft., 350 sq. ft., 350 sq. ft., 350 sq. ft. and 350 sq. ft. each with independent temperature control for personalized comfort. Truly DIY Friendly: Forget expensive installs no HVAC license

Take control of your comfort with the MRCOOL DIY 5th Gen Multi-Zone Mini Split System - the easiest and most affordable way to get powerful, energy-saving heating and cooling without hiring a pro.

  • Five Rooms, Perfect Comfort: Heat or cool five spaces that are 350 sq. ft., 350 sq. ft., 350 sq. ft., 350 sq. ft. and 350 sq. ft. each with independent temperature control for personalized comfort.
  • Truly DIY-Friendly: Forget expensive installs - no HVAC license or special tools required. If you can use basic hand tools, you can do this.
  • No Hassle Setup: Comes with pre-charged Quick-Connect® line sets, so there’s no messy refrigerant handling or vacuuming. Just connect and enjoy.
  • Year-Round Savings: Boasting up to 22.0 SEER2 cooling efficiency and 10.6 HSPF2-4 heating performance, this system delivers serious energy savings.
  • Built for Every Season: Stay cozy even in the dead of winter - reliable heating works all the way down to -13°F.
  • Strong Warranty Protection: Includes 7-Year Compressor Replacement and 5-Year Parts Coverage.

Whether it’s hot summer days or freezing winter nights, the MRCOOL DIY Mini Split keeps your home comfortable and your energy bills low. Smart. Simple. Affordable.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 52154356676

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4.4 ★★★★★
Based on 16 reviews
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Verified Purchase
Steven Runyon
Port Orchard, US
★★★★★ 3
Does what it does
Does what it does
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 10, 2025
G
Verified Purchase
Grant
New York, US
★★★★★ 1
Failed after 2 months
Failed after about 2 months of being used as a battery isolator. When activated, only passes about 2 volts though the contacts on a 12 volt circuit now. Wasted my time and money.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 26, 2025
W
Wes
Los Angeles, US
★★★★★ 4
Works great
I used this to turn on with key on power in my truck. Power then goes through this and turns on my key on fuse panel. That way I can run a much larger cable from the battery to the fuse panel instead of pulling power through the ignition switch, where power output is limited. So far it doesn't get hot, though I am not running anything close to 500 amps through it. More like 75 amps max and even then it's only sometimes. No problems so far.
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Reviewed in the United States on July 28, 2024
A
Verified Purchase
Astrid Falcon
San Leandro, US
★★★★★ 5
Heavy duty and has lasted three years so far
I have had this relay installed in the engine bay of my Lexus RX 300, functioning to link the front battery to the additional battery in the trunk whenever the ignition is on. The relay has worked reliably for about three years now with no complaints besides one minor comment, be careful when threading down the nut on the Low voltage side. It is prone to stripping
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Reviewed in the United States on March 24, 2025
D
Verified Purchase
Dr.Ortiz Ayala
Cuba, US
★★★★★ 5
It delivers as advertised.
Works as advertised, and is easy to install.
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Reviewed in the United States on August 18, 2025

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