MRCOOL Monoblock MTHP Series Through-the-Wall 10K BTU Heat Pump with Heating and Cooling, MDM10115D

The MRCOOL® Monoblock (MDM10115D) is a complete climate system that does something no traditional mini-split can: it delivers professional-grade heating and cooling from a single, wall-mounted indoor unit, with no outdoor condenser required. That means no bulky equipment cluttering your exterior, no costly refrigerant line sets, and no need for a certified HVAC technician to get up and running. Powered by DC inverter technology with a 15 SEER2 rating, the Monoblock operates across a 3,000–12,000 BTU variable range to hold your target temperature with precision rather than brute-force cycling. Running as quietly as 32 dBA, it handles cooling, heating, fan, and dehumidification in one compact footprint, and connects to a standard 115V household outlet. This is year-round comfort, simplified.

• True All-in-One Design: A fully self-contained unit that handles cooling (rated 10,000 BTU at 95°F), heating (rated 9,000 BTU at 47°F), fan, and dehumidification with no outdoor unit required. All components are housed in a single 39.4” x 23.1” x 8.07” wall-mounted panel, preserving your home’s exterior and eliminating the cost and complexity of conventional split-system installation.
• DC Inverter Efficiency: Variable-speed DC inverter technology allows the system to modulate output continuously across a 3,000–12,000 BTU range rather than cycling on and off at full capacity. The result is a 15 SEER2 / 7.5 HSPF2 efficiency rating, steadier room temperatures, reduced energy consumption, and less wear on internal components over time.
• 115V Plug-and-Play Power: Connects to a standard 115V / 15A household circuit with a recommended 15A breaker, no dedicated high-voltage wiring or electrical panel upgrades required. Installation involves drilling intake and exhaust holes through an exterior wall; no refrigerant handling or HVAC certification needed.
• Cold-Climate Heating Performance: Maintains meaningful heat output well below freezing, with a nominal 6,500 BTU at 17°F and 5,000 BTU at 5°F. The heating operating range extends from 5°F to 75°F outdoors, making this a practical primary heat source in cold-weather climates rather than a seasonal accessory.
• Whisper-Quiet Operation: Sound pressure levels range from 32–46 dBA across variable fan speeds, with a dedicated Silent mode for minimal acoustic footprint. At its quietest setting, the Monoblock runs at roughly the volume of a library, making it well-suited for bedrooms, home offices, and any space where noise is a concern.
• Smart Controls & Connectivity: Managed via a backlit LED display, included remote control, or 24-hour ON/OFF programmable timer. Swing, Sleep, and Silent modes provide additional comfort customization.
• Self-Evaporative Drainage System: An integrated self-evaporation system minimizes condensate drainage during cooling operation. For reliable performance under all operating conditions, installation of the included drain tube is required; the system also features a water-full alarm with automatic shutoff to prevent overflow and protect your installation.
• R-32 Refrigerant: Pre-charged with 19.4 oz. of R-32, a lower global warming potential (GWP) refrigerant that delivers strong thermal performance while reducing environmental impact compared to legacy R-410A systems. Cooling operating range covers 32°F to 113°F outdoor ambient temperature.
• ETL-Certified Safety & Warranty Coverage: ETL safety certified for residential installation. Backed by a 1-year parts replacement warranty and 1-year compressor warranty, providing hardware protection and manufacturer support for the full first year of ownership.