MRCOOL Signature 4 Ton Central Ducted Heat Pump
Whole-home heating & cooling through your ductwork
Model: SIG-SYS-48
- In stock — ships in 1–3 business days
- Financing options available at checkout
As low as $321/mo with Affirm
- Uses existing ductwork
- Whole-home cooling
- Reliable compressor system
- Quiet indoor & outdoor
- Works with smart thermostats
Quick Answers Before You Buy
Will this system work with my existing ductwork?
Does this system provide heating and cooling?
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Recommended add-ons used in most central AC installations
Line Set
RecommendedMost installs require a refrigerant line set between units.
Thermostat
RecommendedMost systems need a thermostat to operate after installation.
Heat Kit
RecommendedProvides backup electric heat for cold snaps and extreme weather.
Choose the Right System Size
| System Size | Coverage Area | View Systems |
|---|---|---|
| 1.5 Ton | up to 900 sq ft | See 1.5 Ton Systems |
| 2.0 Ton | 800–1,200 sq ft | See 2.0 Ton Systems |
| 2.5 Ton | 1,200–1,600 sq ft | See 2.5 Ton Systems |
| 3.0 Ton | 1,500–1,800 sq ft | See 3.0 Ton Systems |
| 3.5 Ton | 1,750–2,100 sq ft | See 3.5 Ton Systems |
| 4.0 Ton | 2,000–2,400 sq ft | Current selection |
| 5.0 Ton | 2,200–2,600 sq ft | See 5.0 Ton Systems |
Between sizes? Choose the larger system.
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Free Delivery Ships in 1–3 Business Days
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Key Features
Premium Central Integration
Designed for high-quality ducted HVAC systems. Integrates seamlessly into refined central installations.
Precision Whole Home Comfort
Balanced comfort delivered throughout your home. Precision control maintains a consistently comfortable environment.
Ultra Quiet Performance
Engineered for exceptionally quiet operation indoors and out. Delivers premium comfort without interrupting daily life.
Will This System Work For Your Space?
1900-2200 sq ft
circuit required
system
Still not sure? Try our System Finder
Learn More About This System
Detailed Specifications & Documentation
Reliable Whole-Home Comfort. Built Simple.
The MRCOOL Signature 4 Ton Central Ducted Heat Pump System
delivers dependable year-round heating and cooling for larger homes and
ducted residential spaces up to 2,400 sq ft.
Built for homeowners replacing older HVAC equipment or installing a new
central comfort system, Signature combines practical heat pump performance,
durable construction, and flexible air handler installation into one streamlined
whole-home solution.
With a compact outdoor condenser and multi-position indoor air handler,
Signature is designed to provide reliable ducted comfort without unnecessary
complexity.
System Overview
Designed For Everyday Central Comfort
The Signature Series is built for homeowners who want a dependable central
ducted heat pump system for year-round comfort. It delivers both heating and
cooling through the home’s ductwork, helping maintain comfortable indoor
conditions across changing seasons.
The 4 ton system pairs a 45,000 BTU heat pump condenser with a matching
multi-position air handler, making it a practical choice for larger homes,
whole-home replacements, and appropriately sized ducted spaces.
Flexible Installation Compatibility
Signature was designed to adapt to a wide variety of residential ducted
applications.
Supports upflow, downflow, and horizontal installation configurations.
Lightweight cabinet design helps simplify placement in residential applications.
Works with most third-party smart thermostats and HVAC controls.
Supplemental electric backup heat options are available separately.
Simple Control, Your Way
The Signature air handler is designed to integrate with most third-party smart
thermostats and HVAC controls, giving homeowners flexibility to choose the
control setup that best fits their home.
Thermostat is not included with this system and is available separately as an
optional add-on.
Built For Long-Term Reliability
Helps protect the outdoor coil for dependable long-term operation.
Supports reliable heat pump performance during colder operating conditions.
Includes a copper A-coil, aluminum fins, and a compact cabinet design.
Built-in system monitoring helps support dependable operation.
Signature condenser systems include a 10-Year Limited Parts Warranty and
limited lifetime compressor warranty. Signature air handlers include a 10-Year
Limited Parts Warranty.
Ideal Applications
Optional Accessories
Thermostat, heat kit, and line set are not included with this system and are
available separately as optional add-ons. This allows the system to be configured
around the specific installation requirements of the home.
- Cooling Capacity48000 BTU
- Heating CapabilityStandard Heat Pump
- Coverage Area1900-2200 sq ft
- Installation TypePro Install
- Line Set TypeFlared Line Set
- RefrigerantR-454B
- SEER2 Rating14.3
- SeriesSignature
- System TypeCentral/Ducted
- Voltage208-230V
- Air Handler TypeCentral Ducted
- Cold Climate EligibleFalse
- Air Flow DirectionMulti-Position
Will this work with my home?
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Who installs Signature systems?
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Need Help From a MRCOOL Expert?
Not sure which system is right? Our HVAC specialists can help you choose the correct size and configuration.
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