Overview
The 4 to 5 Ton 18 SEER MrCool Universal Central Heat Pump Split System is one of the most high performing, versatile, and simple heating and cooling products available from the industry today. This is a central heat pump that can cool better than most air conditioners, heat better than virtually any other heat pump, compete with traditional furnaces in cold weather, and reduce energy consumption thanks to its sophisticated internal controls. It even comes with new technology that makes HVAC installation faster and simpler than a traditional heat pump. Basically, the MrCool Universal has it all.
But what is in that "all" exactly? Let's start with the installation of the 4 to 5 Ton 18 SEER MrCool Universal Central Heat Pump Split System. Normal heat pump split system installation will require an HVAC tech to carefully cut the refrigerant line set to fit, charge with nitrogen, braze the connections, vacuum the lines, and then, finally, charge with an appropriate refrigerant like R-410a. It is an effective process, but it can take many hours to do properly and requires specialized tools.
MrCool Universal Heat Pump Continues to Heat in Temperatures As Low As -22
The 4 to 5 Ton 18 SEER MrCool Universal Central Heat Pump Split System is also one of the most effective heat pumps when it comes to performance. The variable-speed DC inverter compressor inside the condenser can deliver high SEER performance and superior production capability. What that really means is that it can deliver maximum cooling and heating at very high and very low temperatures. It will produce 100% cooling at 110 degrees Fahrenheit, up to 72% heating at -5 degrees, and continue producing heat down to minus 22. Most conventional heat pumps begin losing efficiency below 32 degrees.
No-Vac Quick Connect Line Set Compatible!

No cutting, no brazing, no vacuuming, and no charging is required when using the MrCool Universal Pre-Charged Quick Connect Line Set with the 4 to 5 Ton 18 SEER MrCool Universal Central Heat Pump Split System. Traditional installation is available for this product, but for those who want something simpler and easier, we highly recommend the No-Vac option. Combining the MrCool Universal split with the No-Vac lines means that installation can be reduced by hours, and the installer will need only half the tools required for a typical installation. This style of install saves time, money, and headache.
Purchase the MrCool Universal Quick Connect Line Set Here
And, of course, MrCool, an industry leader, protects your investment with a 10-Year Parts Limited Warranty for the 4 to 5 Ton 18 SEER MrCool Universal Central Heat Pump Split System. Make sure you register within 60 days of installation to guarantee your protection.
MrCool Universal Heat Pump Replaces Need for Gas Furnace
4 to 5 Ton 18 SEER MrCool Universal Central Heat Pump Condenser - MDUO18048060

The 4 to 5 Ton 18 SEER MrCool Universal Central Heat Pump Condenser is a cutting edge HVAC technology from an innovation leader. The sophisticated tech inside this unit both regulates the temperature of your home and controls the compressor motor speed simultaneously. It eliminates extreme fluctuations in the operating load and extends the unit’s life.
- 4 Ton Mode: 18 SEER, 5 Ton Mode: 17 SEER
- Ultra Wide Operating Temperature Range
- Gas Furnace Not Required
- Compatible with any third party air handler and thermostat including WiFi/Nest/Honeywell
- Rapid cooling and heating
- Internal Fan Blade Creates Low Noise
- Factory Charged R410
- ETL and AHRI certified
4 to 5 Ton MrCool Universal Air Handler - MDUI18048060

The 4 to 5 Ton MrCool Universal Air Handler is designed for maximum compatibility with the MrCool Universal 4 to 5 Ton Condenser. Properly paired, this air handler can deliver superior home comfort performance in summer, winter, and every season in between. It is ideal for homeowners who want to boost operating efficiency while reducing their dependence on increasingly expensive resources like heating oil. Plus, it is both a quiet and safe solution.
- 4 Ton Mode: 18 SEER, 5 Ton Mode: 17 SEER
- Ultra Wide Operating Temperature Range
- Quick Connect, Flared, & Sweat fittings allow for universal installation
- Multi-positional installation (compatible with upflow and horizontal applications)
- Accommodates up to a 20kW Backup Heat Strip
- Factory Charged R410
- ETL and AHRI certified
Warranty Terms
For a full description of all warranties applicable to this product as well as individual manufacturer requirements, please review the manufacturer's consumer brochure and/or product warranty documents. Online warranty registration must be completed within 60 days of installation. Due to state laws, online registration is not required in California or Quebec. Call for warranty availability on scratch & dent and surplus items.
Installation of any product must comply with all applicable codes and regulations. The service of a certified and trained electrical technician may be required for the installation process.
Specifications
Model | MDU18048060 |
---|---|
UPC | 810035931114 |
AHRI Number | 210410119 |
Bundle Avg Coverage Area | 2,000 - 2,400 Sq Ft |
Bundle Cooling Capacity | 4 Ton, 5 Ton |
Bundle Cooling Efficiency | 18 SEER |
EER | 11 |
Heat Pump Efficiency (HSPF) | 10.5 |
Series | Universal |
Region Compatibility | Nationwide |
California Residents | see Prop 65 WARNING |
MDUO18048060 Specifications:
Model | MDUO18048060 |
---|---|
UPC | 810512032938 |
Avg Coverage Area | 2,000 - 2,500 Sq Ft |
Compressor | Inverter |
Cooling Capacity | 3.5 Ton, 4 Ton, 5 Ton |
Electrical Phase | 1-Phase |
Heat Pump Efficiency (HSPF) | 10 |
Line Set Connection Type | Quick Connect, Flared, or Sweat |
Liquid Line Size | 3/8 inch |
Max Overcurrent Protection | 45 amps |
Primary Heating Capacity | 48,000 - 60,000 BTU |
Product Height (in) | 56.3 |
Product Length (in) | 12.6 |
Product Width (in) | 37 |
Refrigerant | R-410a |
Cooling Efficiency | 18 SEER |
Series | Universal |
Suction Line Size | 3/4 inch |
System Application Type | Central Split Systems |
Voltage | 240 |
Warranty | 10 Year Parts |
Weight (lbs) | 328.0000 |
Region Compatibility | Nationwide |
MDUI18048060 Specifications:
Model | MDUI18048060 |
---|---|
UPC | 810512032990 |
Air Flow Direction | Horizontal, Upflow |
Configuration | Floor Mounted |
Blower Motor | High Efficiency |
Cooling Capacity | 3.5 Ton, 4 Ton, 5 Ton |
Electrical Phase | 1-Phase |
Heat Strip Compatibility | Up to 20 kW |
Line Set Connection Type | Quick Connect, Flared, or Sweat |
Liquid Line Size | 3/8 inch |
Max Overcurrent Protection | 15 amps |
Product Height (in) | 57 |
Product Length (in) | 21.32 |
Product Width (in) | 24.8 |
Series | Universal |
Suction Line Size | 3/4 inch |
System Application Type | Central Split Systems |
Voltage | 240 |
Warranty | 10 Year Parts |
Weight (lbs) | 202.8000 |
Accessories
Reviews
Q & A
Can a handy home owner install this system.
Thanks
What other parts are needed to install this unit.
Mark
So, is the info you are posting related to the latest generation of the 4-5 ton system? If so ,please provide an independent source for my reference. I also noticed the AHRI cert is for the 3 ton unit not the 4-5.Please provide certs for the 4-5 ton.
I have a Lennox air handler model CBA38MV-048-230-6-02 which is only 2 years old. Would the MRCOOL condensing unit be able to pair with it?
Thank you for your time on this matter. I look forward to your response
Precharged line set..... but what about the rest of the lines inside condenser and air handler units? Are they vacuumed and sealed at the factory? If not factory vacuumed would that not be considered a source of contamination?
Trying to understand. Thanks
I need a 5 ton system for my 2525 sq ft home in Phoenix, AZ. I also have a 2 ton Mitsubishi mini split with concealed ducts which cools a large family room.
Any thoughts?
Why is unit shutting of once everyday and I have to start it again???( 4 Ton Unit )
ITEM: HA20920
Are both of these units 240 volts and how many amps does each unit draw?
Thanks,
RB
Thanks
This is the system I'm considering:
4 to 5 Ton 18 SEER MrCool Universal Central Heat Pump Split System - Upflow/Horizontal
Thank you!
Ralph
I HAVE CALLED AND NO RETURN CALL. HAVE A FEW QUESTIONS PRIOR TO ORDERING.
I know it goes under the air handler.
ITEM: HA20920 MODELS: MDUO18048060, MDUI18048060
Would this unit or the smaller one rated at three tons be the better choice? How loud is the outdoor unit?
Also, what is the size needed for the supply plenum and the return air plenum?
For our condominium, we do have Gas heat with the system mounted in the lobby area with compressor punted on the Roof Top.
We would like to change this gas heat to heat pump.
Thanks, Mike
How do you figure out if the fan on the air handler is powerful enough to replace the old forced air heater/air conditioner fan unit?
Thanks, George
When installed horizontally, does it matter which side the air handler rests on?
I already have a modern air handler, but I would like to add on one of these condensers to my unit. It says that it is universal. Will it work with my air handler?
insulated built in 1986. I live in central Alabama.
Thanks very much.
Frank
Can one use the filter port on bottom return of the unit or do I need a separate filter in the return air duct before the unit
I notice it's not a standard size ?
Is this a system filter only or can one use this as main filter.
195/16×205/16× 5/8 ( 490×516×15