The MRCOOL® Signature Series has long stood for comfort, efficiency, and value. Now, we’re proud to announce a powerful expansion to this trusted line. We’d like to introduce you to our new heat pump and cooling-only condensers, along with our versatile multi-position and stud-mount air handlers. You can rest assured knowing that all four are built with the same reliability and performance that homeowners and professionals expect from MRCOOL®.
Because we believe in these systems, every Signature Series condenser is now backed by a true Lifetime Compressor Warranty straight out of the box, no registration required. The units feature a scroll compressor, which is an industry standard for long-term durability. That’s peace of mind you can count on for as long as you own the system.
The Signature Series Is Now Stronger Than Ever
All new models in the expanded Signature Series utilize R-454B, a low-GWP refrigerant that aligns with industry-standard environmental regulations. These new condensers deliver strong seasonal performance, with SEER2 ratings up to 14.3 and an HSPF2 heating efficiency up to 7.5 on the heat pump models. Their compact, lightweight cabinets make them ideal for new installations and retrofits alike. All Signature Series air handlers have an operating noise between 53 and 57 dB(A), which is close to the volume of a typical refrigerator running.
The multi-position and stud-mount air handlers have also been redesigned with either an ECM or a PSC blower. The ECM, or Electronically Commutated Motor, is a high-efficiency blower motor that automatically adjusts speed to maintain consistent airflow, reducing energy consumption and noise while improving overall system performance. A PSC, or Permanent Split Capacitor motor, which is a part in the 1.5 and 2 ton multi-position air handlers, is a cost-effective and reliable option commonly used in older HVAC systems. It features a permanently connected run capacitor for consistent startup and operation, but it runs at fixed speeds, either fully on or completely off, resulting in lower energy efficiency compared to modern variable-speed ECM motors.
But the most important upgrade? The compressor. These new condensers feature a scroll compressor, designed to deliver a smooth, quiet, and efficient performance. And now it’s backed by a Lifetime Condenser Warranty that requires no extra steps or registration. Your investment deserves lasting performance and guaranteed peace of mind.
Cooling-Only Condenser: Seasonal Power for Energy-Efficient Homes
The new MRCOOL® Signature Series Cooling-Only Condenser is engineered for homeowners who prioritize reliable and energy-efficient cooling. Designed with a scroll compressor for smooth and quiet operation, this unit offers dependable performance even in the most intense summer heat. With SEER2 ratings up to 14.3 and a capacity range from 17K to 55K BTU, it’s a powerful solution for replacing aging systems or building new ducted setups in homes without heating needs. Ideal for homeowners seeking an affordable, quiet, and efficient cooling system with a compact footprint and lifetime compressor warranty.
Heat Pump Condenser: All-Season Comfort with Dual Performance
For homeowners who need year-round climate control, the Signature Series Heat Pump Condenser provides both heating and cooling in a single high-efficiency package. With up to 14.3 SEER2 for cooling and 7.5 HSPF2 for heating, this system combines powerful performance with energy savings. Its scroll compressor operates quietly in all seasons, while the intelligent defrost function ensures steady operation even during freezing temperatures. Compliant with eco-conscious R-454B refrigerant, this heat pump is future-ready and compliant with evolving standards. Whether for new builds or retrofits, this model delivers all-season reliability and comfort.
Multi-Position Air Handler: Smart, Flexible HVAC for Every Space
The new Signature Series Multi-Position Air Handler brings flexible installation and smart home compatibility to your HVAC setup. Designed for upflow, downflow, or horizontal configurations, this unit is perfect for attics, closets, basements, and crawlspaces. The blower motor ensures consistent airflow and reduced noise, while the copper A-coil with aluminum fins boosts thermal performance. Fully compatible with most third-party smart thermostats, this air handler helps homeowners maintain energy-efficient comfort while supporting future upgrades and integrations.
Stud-Mount Air Handler: Slim Comfort for Compact Spaces
Built for homes where traditional HVAC systems don’t fit, the new Signature Series Stud-Mount Air Handler is a space-saving solution with no compromise on comfort. Perfect for mobile homes, tiny homes, and retrofits, it installs directly between wall studs and supports both front and bottom return airflow. Its ECM motor ensures efficient and quiet operation, and its compatibility with smart thermostats and optional electric heat kits add versatility. This system delivers premium MRCOOL® comfort in even the most challenging layouts.
Lifetime Warranty: The New Signature Standard
The new additions to the MRCOOL® Signature Series also mark a major step forward in warranty protection and long-term value. Every condenser in this expanded lineup now comes standard with a Lifetime Compressor Warranty, no registration required, offering unmatched peace of mind for homeowners. Each system is also backed by a 10-Year Parts Warranty, reinforcing the brand’s commitment to reliability. More than just a system, this is a long-term investment in comfort, efficiency, and future-ready performance.
The Signature Series, Elevated
With this expansion, the MRCOOL® Signature Series continues to define what accessible comfort and HVAC innovation can look like. Each new system is built around proven technology, forward-thinking refrigerants, and a warranty structure that removes the guesswork. The result is long-term value for homeowners, streamlined solutions for contractors, and real peace of mind for everyone involved.
Whether you’re designing for a new build or upgrading an aging system, these Signature Series products offer the performance and protection you can trust. Are you ready to learn more about your new system or talk to a local dealer? Visit mrcool.com for more information, or use our dealer locator to find a trusted partner near you.