Universal · Central ducted system

MRCOOL Universal Series 3 Ton Central Ducted Heat Pump System

The MRCOOL Universal Series 36,000 BTU 3 Ton Central Ducted Heat Pump System is a high-performance, inverter-driven HVAC solution designed for efficient whole-home heating and cooling. Built with advanced DC inverter technology, R-454B refrigerant, and a flexible multi-position air handler, this system is ideal for homeowners upgrading an older central HVAC system or installing a new ducted heat pump.

With efficiency ratings up to 18.0 SEER2, 12.0 EER2, and 10.0 HSPF2-4, the MRCOOL Universal 3 Ton system delivers dependable year-round comfort while helping reduce energy consumption compared to conventional single-stage equipment. It is designed for extreme climate operation, with continuous cooling operation up to 122°F, up to 100% cooling output at 110°F, continuous heating operation as low as -22°F, and up to 100% heating output at -13°F.

Key Features

• 3 Ton / 36,000 BTU Capacity: Designed for medium-size homes, primary residences, open layouts, and system replacements.
• Up to 18.0 SEER2 Efficiency: High-efficiency performance helps reduce energy usage while maintaining steady indoor comfort.
• R-454B Refrigerant: Uses next-generation refrigerant for strong performance with reduced environmental impact.
• DC Inverter Technology: Variable-speed operation adjusts heating and cooling output based on real-time demand.
• Extreme Climate Performance: Provides reliable heating and cooling in cold, mixed, and warm climates.
• Central Ducted Comfort: Works with ductwork to provide whole-home heating and cooling from one central system.
• Multi-Position Air Handler: Supports upflow, downflow, horizontal left, and horizontal right installation configurations.
• DIY-Friendly Line Set Option: Compatible with optional MRCOOL No-Vac® pre-charged line sets for simplified installation.
• Universal Heat Kit Compatible: Supports optional auxiliary heat kits for backup or supplemental heating.
• Certified Performance: ENERGY STAR®, ENERGY STAR Cold Climate, AHRI, NEEP, CEE; incentives depend on current program rules and installation date; no federal tax credit is assumed.

System Overview

This MRCOOL Universal split system pairs the UHP18036-O outdoor heat pump condenser with the UAH18036-O multi-position indoor air handler. Together, they create a flexible central ducted heat pump system built for efficient performance, quiet operation, and broad installation compatibility.

Unlike traditional single-stage HVAC systems that cycle fully on and off, the MRCOOL Universal Series uses inverter-driven technology to continuously adjust system output based on demand. This helps reduce temperature swings, improve humidity control, lower energy waste, and support quieter everyday operation.

Performance Specifications

Electrical Specifications

Dimensions & Weight

Indoor Airflow

DIY-Friendly No-Vac® Line Set Compatibility

The MRCOOL Universal Series offers installation flexibility that many traditional central ducted heat pump systems do not. This system can be installed using conventional HVAC methods, or it can be paired with compatible MRCOOL No-Vac® pre-charged line sets, sold separately.

When used properly, No-Vac® line sets can help simplify installation by reducing the need for traditional refrigerant line evacuation. For DIY-focused homeowners and installation professionals, this can help reduce installation time, lower labor costs, and make the Universal Series one of the most flexible central ducted heat pump systems available.

Indoor Air Handler Features

• Multi-Position Design: Supports upflow, downflow, horizontal left, and horizontal right installation configurations.
• Compact Cabinet: Designed to fit many closets, attics, basements, and mechanical rooms.
• M-Shaped All-Aluminum Coil: Corrosion-resistant coil design improves heat transfer and airflow efficiency.
• High Airflow Design: Helps move conditioned air efficiently through compatible duct systems.
• Multi-Voltage Capability: Indoor air handler supports 115V and 208/230V power configurations.
• Automatic Voltage Identification: Reduces manual conversion and rewiring requirements.
• Universal Heat Kit Compatible: Compatible with optional 5kW to 20kW auxiliary heat kits.
• Service-Friendly Design: Built for easier installation, maintenance, and long-term reliability.

Outdoor Condenser Features

• Inverter-Driven Compressor: Adjusts system output to match heating and cooling demand.
• Extreme Heat Cooling: Continuous operation up to 122°F, with up to 100% cooling output at 110°F.
• Extreme Cold Heating: Continuous operation down to -22°F, with up to 100% heating output at -13°F.
• Quiet Operation: Outdoor sound rating of 63 dB(A).
• R-454B Refrigerant: Factory charged with next-generation refrigerant.
• Certified Performance: AHRI data supports the listed capacity and efficiency ratings.

Ideal Applications

• Medium-size residential homes
• Primary residences and open floor plans
• Replacement of older central HVAC systems
• New residential construction
• Cold climate and mixed climate applications
• Installations requiring flexible ducted heat pump configuration
• Homeowners wanting a central heat pump compatible with optional No-Vac® line sets

Certifications & Incentive Eligibility

Note: Rebate and tax credit eligibility may vary by location, installation details, and current program rules. Always confirm current incentive requirements before purchase or installation.

What’s Included

• MRCOOL Universal Series UHP18036-O outdoor heat pump condenser
• MRCOOL Universal Series UAH18036-O multi-position indoor air handler
• Factory refrigerant charge in outdoor condenser
• Installation documentation
• Manufacturer warranty coverage

What May Be Required

• Compatible MRCOOL No-Vac® pre-charged line set or traditional refrigerant line set
• Thermostat
• Electrical disconnect
• Electrical whip and breaker
• Surge protector
• Condensate drain materials
• Optional electric heat kit
• Professional installation supplies depending on local code requirements

Warranty Coverage

• 10-Year Limited Parts and Compressor Warranty
• 2-Year Limited Labor Warranty

10-year limited parts and compressor coverage plus 2-year limited labor coverage for the original owner, subject to the manufacturer terms. Labor coverage starts on day 91 after proof of purchase and has a liability limit. Professional installation is required under this warranty, and proof may be required. Authorized-dealer purchase, approved equipment matching and compliant installation/maintenance are required. Refrigerant, freight and other listed costs are excluded. See the full conditions and exclusions. Read the applicable MRCOOL limited-warranty PDF.

The MRCOOL Universal Series 3 Ton Central Ducted Heat Pump System is a strong choice for homeowners who want efficient whole-home comfort, extreme climate performance, flexible installation options, and compatibility with optional MRCOOL No-Vac® pre-charged line sets.