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Ships within 48 hours · Estimated delivery Aug 5 - Aug 10
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Description
MRCOOL DIY 5th Gen 4-Zone 54,000 BTU Ceiling Cassette Ductless Mini Split Air Conditioner & Heat Pump with Pre-Charged Line Sets (9K+9K+18K+18K), DIYM455HPTake 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. Four Rooms, Perfect Comfort: Heat or cool four spaces that are 350 sq. ft., 350 sq. ft., 750 sq. ft. and 750 sq. ft. each with independent temperature control for personalized comfort. Truly DIY Friendly: Forget expensive installs no HVAC license or special
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.
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Four Rooms, Perfect Comfort: Heat or cool four spaces that are 350 sq. ft., 350 sq. ft., 750 sq. ft. and 750 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.
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No Hassle Setup: Comes with pre-charged Quick-Connect® line sets, so there’s no messy refrigerant handling or vacuuming. Just connect and enjoy.
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Year-Round Savings: Boasting up to 22.0 SEER2 cooling efficiency and 10.6 HSPF2-4 heating performance, this system delivers serious energy savings.
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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:
- 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
4.7 ★★★★★
Based on 10 reviews
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Product Reviews
★★★★★ 5
Power steering clean
Size: 12 Fl Oz (Pack of 1)
Worked well for my Honda. Changed out the old fluid which was black. Now it's clean and yellow. Car drives a lot better steering. 5 stars.
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Reviewed in the United States on February 20, 2026
★★★★★ 5
The real stuff
Size: 12 Fl Oz (Pack of 1)
Fine product at a great price.
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Reviewed in the United States on March 23, 2026
★★★★★ 5
Both filters for the price of one.
This filter set for my 10th generation Honda Civic is an excellent value and fits perfectly. Before installing, I compared both the cabin and engine air filters to the originals to ensure proper sizing, and they matched exactly.
Replacing the cabin air filter was very simple and straightforward. The engine air filter requires a bit more effort since you need to remove four screws to access the housing, but it is still an easy process.
Once opened, you simply remove the old filter and place the new one inside. Both filters appear to be high quality and, in fact, looked better constructed than the ones I removed.
I especially appreciate that this set includes both filters together, making it convenient to replace them at the same time.
Recently, while at the dealership, I overheard a technician inform a customer that replacing her air filters would cost $90. Considering how simple the process is, that price felt excessive. This two pack is very reasonably priced, and I have paid nearly the same amount in the past for just one filter (not from the dealership but auto zone).
These filters are well made, fit properly, and offer significant savings compared to dealership and ur local auto stores. I plan to continue purchasing this set for future replacements.
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Reviewed in the United States on March 4, 2026
★★★★★ 5
Compatible for 2018 Honda CR-V
This is a compatible fitment, as described in the listing, for our 2018 Honda CR-V. It was accurately described online. It seems to be comparable quality to the ones I took out to replace these. If I recall, they had been just as good as the stock ones when I put those in. I would say these are just as good as OEM & they feel very well made & durable. I consider them a good value for how much I saved by installing these myself & not paying a dealership. I highly recommend this
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Reviewed in the United States on December 23, 2025
★★★★★ 4
Save money with this filter bundle!
The main reason you should get this Cabin Air Filter with an Engine filter, is the value. You get both filters for the price of one. To install, it will vary of difficulty in reaching the filter compartments, so for a Civic, is just open the glove compartment and two tabs behind it, and that's it. The engine one is a little bit trickier with two metal tabs, but easy as well.
As for quality, time will tell, but at first glance and overview, it looks of decent to good quality. So nothing bad to write about it. The cabin filter fit as expected. I haven't change the engine filter.
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Reviewed in the United States on January 13, 2026
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