The MRCOOL Universal packaged heat pump is a 2nd Gen, all-electric heating and cooling system in one outdoor cabinet, built around a DC inverter compressor and R-32 refrigerant, in 3, 4 and 5-ton sizes. Every size is rated 18 SEER2, with 8.5 HSPF2 on the 3-ton and 4-ton and 8.3 HSPF2 on the 5-ton; rated cooling runs from 34,000 BTU/h on the 3-ton to 56,000 BTU/h on the 5-ton, and MRCOOL rates it to heat at outdoor temperatures down to -22°F. It suits ducted homes without gas or without room for indoor equipment.
The cabinet connects to ducts through the base or the side, sits on a pad or roof curb, and accepts MRCOOL's MDPHK electric heat kits for backup. Installation, wiring and commissioning are by a licensed HVAC contractor.
Features
Inverter Compressor
An inverter rotary compressor changes speed with the load, which keeps temperatures steadier than a single-speed unit and reaches 18 SEER2.
Cold-Climate Heating
MRCOOL rates heating from -22°F to 75°F outdoors, at 8.5 HSPF2 on the 3-ton and 4-ton and 8.3 HSPF2 on the 5-ton. Capacity falls as the outdoor air gets colder, so hard-winter homes add an MDPHK heat kit for backup.
Wide Cooling Range
Cooling runs at outdoor temperatures from 23°F up to 125°F.
Downflow or Horizontal Ducts
The cabinet ships for vertical connection through the base and converts to horizontal supply and return through the side panels.
Intelligent Defrost
The control judges frost build-up on the outdoor coil and defrosts only when needed rather than on a fixed timer.
Electronic Expansion Valve
An EEV meters the R-32 charge precisely across the compressor's speed range.
Heat Kit Ready
MDPHK06D, MDPHK09D and MDPHK12D electric heat kits slide into the cabinet for backup heat.
Thermostat or Wired Controller
Run it from a standard 24V thermostat or MRCOOL's wired controller.
Specifications
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SEER2: 18
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EER2: 11.2
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Voltage: 208/230V
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Phase: 1
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Frequency: 60 Hz
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Refrigerant: R-32
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Heating Operating Range (outdoor, low): -22°F
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Cooling Operating Range (outdoor, low): 23°F
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Blower Motor: Direct Drive
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Compressor: Inverter Rotary
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Inverter: Yes
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Metering Device: EEV
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Color: Grey
3 Ton (36,000 BTU)
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Model: MDPH18036D
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Cooling Capacity: 34,000 BTU/h
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Heating Capacity: 34,000 BTU/h
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Nominal Tonnage: 3 ton
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HSPF2: 8.5
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Minimum Circuit Ampacity: 35 A
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Max Fuse / Breaker: 40 A
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Refrigerant Charge: 149.9 oz
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Sound Level: 63 dBA
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AHRI Certified: yes
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Dimensions: 44"W x 35.44"D x 49.25"H
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Weight: 523 lbs
4 Ton (48,000 BTU)
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Model: MDPH18048D
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Cooling Capacity: 47,000 BTU/h
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Heating Capacity: 47,000 BTU/h
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Nominal Tonnage: 4 ton
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HSPF2: 8.5
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Minimum Circuit Ampacity: 39.1 A
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Max Fuse / Breaker: 45 A
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Refrigerant Charge: 204.6 oz
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Sound Level: 68 dBA
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AHRI Certified: yes
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Dimensions: 44"W x 44"D x 49.25"H
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Weight: 628.3 lbs
5 Ton (60,000 BTU)
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Model: MDPH18060D
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Cooling Capacity: 56,000 BTU/h
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Heating Capacity: 57,000 BTU/h
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Nominal Tonnage: 5 ton
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HSPF2: 8.3
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Minimum Circuit Ampacity: 39.1 A
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Max Fuse / Breaker: 45 A
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Refrigerant Charge: 204.6 oz
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Sound Level: 68 dBA
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Dimensions: 44"W x 44"D x 49.25"H
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Weight: 628.3 lbs
What's Included
- MRCOOL Universal 2nd Gen DC inverter packaged heat pump
Installation
Professional installation required. This equipment must be installed by a licensed HVAC contractor (EPA Section 608-certified for any refrigerant work), following MRCOOL's installation manual and all local codes, permits and licensing rules. MRCOOL's limited warranty applies only to units installed that way, and it does not cover installation labor.
Install on a level pad or a roof curb (the curb is not supplied by MRCOOL), clear of water, ice or snow falling from a roof edge. Duct connection ships vertical and converts to horizontal through the side openings. Run a PVC condensate line from the drain pan with a fall of 5 to 10 degrees, and do not tie it into a rain or waste pipe. Power is 208/230V single phase. A 24V thermostat requires the SA1 DIP switch to be set during commissioning. Heat kits are field-installed and change the circuit requirements.
Resources
Shipping, Returns & Warranty
Ships to addresses in the United States only, by freight carrier for the larger cartons. Shipping cost is calculated at checkout, and the carrier may call ahead to book a delivery window.
Inspect the packaging and the product before you sign. Note any damage or shortage on the delivery receipt, then email photos to support@mycleansupplies.com within 48 hours of delivery so the freight claim can be filed. Damage reported after 48 hours can't be claimed.
MRCOOL handles returns through the store you bought from, so your return comes to us. Unopened, unused MRCOOL equipment can be returned within 21 days of delivery with a return authorization from us. You pay the return shipping, and a restocking fee of up to 20% may be deducted along with payment processing fees. Opened, installed or used equipment and special-order items can't be returned.
MRCOOL's limited warranty gives the original owner 10 years on parts and compressor from the proof of purchase date, plus a 10-year limited labor warranty that starts on the 91st day after purchase, with total labor claims capped at the purchase price less taxes. It requires purchase from an authorized dealer and installation by a professional installer to all applicable codes, policies and licensing requirements. Full terms, registration steps and exclusions are in the MRCOOL warranty document under Resources.
Warranty claims. MRCOOL handles warranty claims directly through support.mrcool.com or (270) 366-0457. Some MRCOOL warranties cover the original purchaser only. Systems that aren't DIY need a valid installation invoice to open a claim.
About MRCOOL
MRCOOL designs heating, cooling and water-heating equipment from its home base in Hickory, Kentucky. The range runs from DIY ductless mini-splits, built around MRCOOL's patented pre-charged Quick Connect line sets, through contractor-installed mini-splits, central split systems, packaged units and gas furnaces, to HeatWise water heaters and CoolBlade HVLS fans for warehouses and shops.
The 2nd Gen Universal packaged heat pump is MRCOOL's inverter-driven, all-electric packaged system on R-32 refrigerant, for ducted homes that want cold-climate heat pump performance without an indoor air handler. It sits alongside MRCOOL's single-speed VersaPro packaged units and the Universal split system, and MRCOOL's MDPHK electric heat kits slide into the cabinet for backup heat.
