SKU: 99667051890

MRCOOL Signature Series TruInverter 4 Ton Central Heat Pump Split System | 48K BTU | Up to 18 SEER2 | R-454B | MCSHV8M4821BA

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Description

MRCOOL Signature Series TruInverter 4 Ton Central Heat Pump Split System | 48K BTU | Up to 18 SEER2 | R-454B | MCSHV8M4821BAMRCOOL Signature Series TruInverter 4 Ton Central Heat Pump Split System The MRCOOL Signature Series TruInverter 4 Ton Heat Pump Split System is designed for high capacity heating and cooling in larger homes and demanding applications. Built with advanced inverter technology and durable components, this system delivers consistent, energy efficient comfort without the performance limitations of traditional systems. With a 48,000 BTU (4 Ton) capacity,

MRCOOL Signature Series TruInverter 4 Ton Central Heat Pump Split System

The MRCOOL Signature Series TruInverter 4 Ton Heat Pump Split System is designed for high-capacity heating and cooling in larger homes and demanding applications. Built with advanced inverter technology and durable components, this system delivers consistent, energy-efficient comfort without the performance limitations of traditional systems.

With a 48,000 BTU (4 Ton) capacity, this system is ideal for larger residential spaces, multi-zone ducted applications, and light commercial environments. The TruInverter variable-speed compressor automatically adjusts output based on real-time demand, improving efficiency while maintaining precise temperature control.

Key Features

  • 4 Ton (48,000 BTU) heating and cooling capacity for whole-home coverage
  • Up to 18 SEER2 efficiency for lower operating costs
  • TruInverter variable-speed compressor for precise climate control
  • R-454B refrigerant for reduced environmental impact
  • Reliable performance in extreme temperatures
  • Quiet operation with sound-dampening top design
  • Heavy-duty steel cabinet with louvered coil guard
  • Service-friendly design for easier maintenance and diagnostics
  • Compatible with standard 24V thermostats

Performance & Efficiency

Specification 4 Ton TruInverter System
Cooling Capacity 48,000 BTU
Heating Capacity 48,000 BTU
SEER2 Up to 18.0
HSPF2-4 8.5
Operating Range (Cooling) Up to 125°F outdoor temperature
Operating Range (Heating) Down to -5°F outdoor temperature
Outdoor Sound Level ~70 dB(A)
Refrigerant R-454B

Advanced TruInverter Technology

Unlike traditional HVAC systems that cycle on and off, the TruInverter system continuously adjusts output to match demand. This provides:

  • Consistent indoor temperatures with minimal fluctuation
  • Improved energy efficiency and reduced utility costs
  • Lower mechanical stress and longer system lifespan
  • Quieter performance during normal operation

Installation & Compatibility

The MRCOOL Signature Series 4 Ton system is designed for flexible installation across a wide range of applications, including:

  • Residential ducted HVAC systems
  • Light commercial installations
  • New construction and replacement systems

Note: Professional installation is required. Proper system sizing, airflow design, and electrical setup are critical for performance and efficiency.

Durability & Build Quality

Built for long-term reliability, this system features a rugged exterior and protective components designed to withstand harsh conditions. Internal components are accessible for easier service, while integrated diagnostics help streamline troubleshooting.

Warranty Information

Coverage Details
Parts 10-Year Limited Parts Warranty
Compressor Limited Lifetime Compressor Warranty

Why Choose the MRCOOL 4 Ton TruInverter System?

If you need a high-capacity, energy-efficient system capable of handling larger spaces, the MRCOOL Signature Series 4 Ton heat pump delivers the performance, durability, and efficiency required for whole-home comfort. Designed for professional installation, it provides long-term reliability with advanced inverter-driven performance.

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: 99667051890

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4.6 ★★★★★
Based on 25 reviews
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PETER CROWE
Grantham, US
★★★★★ 5
Great for walking all day at work as well
Size: X-Large, Color: (001) Black / Black / White
I walk approximately 10 miles a day at work, in a manufacturing setting. On concrete with steel toe shoes. My feet have been begging me to change from the socks that I have worn for years. I have worn these other name brand socks for probably 10 years. So, change was obviously something I had to be pushed into. I got on Amazon and searched for training socks. I read the description. Glanced at the reviews. I decided to move forward with purchasing these. I could not have been happier. My feet began feeling better immediately. And the priced was very reasonible.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 12, 2026
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jcolis
Alexandria, US
★★★★★ 5
You have one pair of feet. Treat them kindly with a pair of UA socks
Size: Large, Color: (100) White / White / Black
Soft and tough. Easy on the feet. Nice fit prevents sore spots and blisters.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 3, 2025
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Verified Purchase
Will
Natrona Heights, US
★★★★★ 5
Excellent all-poly athletic socks for general lifting and HIIT.
Size: Medium, Color: Black/White/Grey
***These are NOT “low” -cut socks as the description in the title states. These are actually “quarter”-cut socks as clearly visible in the picture of the sock itself. “Low” -cut socks are shorter than this height but still visible with a shoe. Also, on the actual UA package of these socks, it clearly states these are QUARTER cut socks. My review: Gave these UA Performance Tech socks (UAPT) 5 stars since they’re very good but in all reality not the best socks I’ve ever had for lifting and HIIT workouts. That title goes to Nike Dri-Fit MAX socks (DFM)….but these socks are really good. Like Nike’s DFM’s, these UAPT socks come in sizes, halleluah (M, L, and XL). The idea that most athletic sock are sized 6-12 and should therefore fit everyone perfectly is absolutely ridiculous. Your shoes come in whole and half sizes…so socks should at the very least be sized like these UAPT’s and Nike DFM’s…in S/M/L or in this case, M/L/XL. I wear a men’s size 8 shoe and the M (medium) size in these socks was a perfect fit; true to size. Also, UAPT socks are ALL polyester with Spandex which is ideal and 100% that which you want for athletic socks: wicking with stretch. Cotton socks are the absolute worst thing you could wear to the gym since they’re sponges for sweat and therefore get wet and heavy, cause blisters, tend to stink, stick to skin, etc… IF you prefer cotton socks for athletics, then you don’t understand how performance fabrics work in athletics and training. You do NOT want cotton in your athletic apparel. You want your fabrics that wick sweat away; NOT soak up sweat and hold onto it. Also, the flexibility and stretch of the foot and ankle parts of the sock were both just right. Snug but not too tight. Wicking is perfect, too. Already worn during two 3 1/2 hour workouts and my feet stayed as dry as a desert. When looking for UA athletic socks on Amazon, I surprisingly continued to find UA “athletic” socks made with mostly cotton which completely surprised me because a serious athletic company should produce an abundance of performance-level socks… i.e. all-poly socks. Thank goodness I finally came across these UA all-poly Performance Techs. The only drawback to these UAPT’s…and it’s a minor drawback…is that unlike Nike DFM’s, these do not come in L & R (left and rights) to specifically match the individual foot shape. Nike DFM socks come in L and R which sets them apart from all other athletic socks…and yet I don’t like supporting a massive monopolistic athletic apparel company like Nike, but they’re the only one that makes THE best athletic sock. Nonetheless, these UAPT’s are perfect workout/HIIT/lifting socks for the bundle value price of six pair and three colors. If you’re looking to match your new UA or Rock shoes with the appropriate UA athletic sock, then here you go. I chose the black/white/gray mix bundle since I have new pairs of a black and a white version of the same UA-Rock shoe. These UAPT socks are medium thickness so they didn’t take up an exorbitant amount of room in my shoes but they’re thick enough to prevent blisters and provide cushion. Overall they’re very comfortable, hold a good stretch, hold their shape, and seem to be durable but only time will tell. And since we’re on the black and white sock subject, I couldn’t resist: I read a shoe review about someone angered that his new UA/Rock black shoes (obviously bought for casual wear in lieu of gym use) staining his white cotton socks. First of all, never ever wear white socks (much less cotton white socks) with black athletic shoes! The possibility of staining is always there and the appearance just doesn’t work. However, you can get away with black socks with white shoes in some cases…but never white socks with black shoes. Why? Who knows? It’s just one of those unwritten rules of the gym. And no, I didn’t make the rules…so don’t blame the messenger. LOL!
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Reviewed in the United States on July 28, 2025
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Verified Purchase
Carleen DeGolyer
Charlottesville, US
★★★★★ 5
Very soft and wears well
Size: Medium, Color: Black/White/Grey
Very nice quality and soft
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 18, 2026
M
Verified Purchase
Madmax
Belleville, US
★★★★★ 5
Great buy
Size: X-Large, Color: Black/Black/Black
Good socks that fit well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 20, 2026

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