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- 2.5 ton - best for spaces between 1200 -1500 sq ft depending on your home's insulation and your climate
- SEER2 rating helps consumers compare energy efficiency when choosing a new air conditioner. Higher SEER2 ratings mean significant utility savings. The federal minimum is 14 SEER2 with ratings into the 20 SEER2 range. A 20 SEER2 uses half the energy of a 10 seer much like MPG ratings for vehicles.
- Heat pumps are all electric and good for mild and cold climates.
- If you have an indoor furnace, or air handler, along with an outdoor AC unit, this system will serve as a replacement for both.
Lennox Merit 2.5 Ton 14.3 SEER2 Heat Pump System - R454B
- Condenser: ML14KP1-030-230
- Air Handler: CBK45UHPT-030
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- 2.5 ton - best for spaces between 1200 -1500 sq ft depending on your home's insulation and your climate
- SEER2 rating helps consumers compare energy efficiency when choosing a new air conditioner. Higher SEER2 ratings mean significant utility savings. The federal minimum is 14 SEER2 with ratings into the 20 SEER2 range. A 20 SEER2 uses half the energy of a 10 seer much like MPG ratings for vehicles.
- Heat pumps are all electric and good for mild and cold climates.
- If you have an indoor furnace, or air handler, along with an outdoor AC unit, this system will serve as a replacement for both.
Lennox Merit 2.5 Ton Split System Heat Pump Condenser - Up to 17 SEER2, R454B
Model Number
ML14KP1-030-230
Dimensions
28-1/4" W x 28-1/4" D x 33-1/4" H
Documents
ML14KP1-030-230 Specifications
Warranty
Parts: 5 years
Lennox Merit 2.5 Ton Upflow/Horizontal Air Handler - Quantum Coil, Factory-Installed TXV, R454B
Model Number
CBK45UHPT-030
Dimensions
18-1/2" W x 22" D x 47" H
Documents
Warranty
Parts: 5 years
Heat Kit Options
AHRI Number
215712349
Efficient Home Comfort Through Every Season
Keep your home comfortable throughout the seasons with the Lennox Merit ML14KP1-030-230 2.5 Ton Heat Pump Condenser. This single-stage heat pump provides both heating and cooling and combines dependable Lennox technology with an efficient, straightforward design.
When properly matched with compatible indoor equipment, the ML14KP1 series can reach up to 17 SEER2 and 8.2 HSPF2. The ML14KP1-030-230 provides a nominal 2.5-ton capacity for residential split-system applications.
Key Features
- 2.5 Ton Heat Pump – Provides heating and cooling from one outdoor unit.
- Up to 17 SEER2 – Delivers efficient cooling performance with qualifying system combinations.
- Up to 8.2 HSPF2 – Supports efficient heating operation during cooler weather.
- R-454B Refrigerant – Lower-GWP refrigerant with zero ozone depletion potential.
- Single-Stage Scroll Compressor – Straightforward operation engineered for efficiency and reduced operating sound.
- Quantum™ Coil – Corrosion-resistant aluminum construction supports reliable heat transfer.
- Heavy-Gauge Steel Cabinet – Helps protect the outdoor unit from the elements.
Durable Lennox Quantum™ Coil
Lennox equips the ML14KP1 with its Quantum™ Coil, featuring enhanced aluminum alloy tubing and aluminum fins. The coil is engineered for superior corrosion resistance and is factory tested under high pressure for dependable performance.
Proven Scroll Compressor Technology
The single-stage scroll compressor is designed for efficient operation with uniform suction and constant discharge flow. Low gas pulses during compression help reduce operating sound, while resilient rubber compressor mounts help isolate vibration.
R-454B Refrigerant
Designed for today's R-454B HVAC systems, the ML14KP1 uses a refrigerant Lennox identifies as having low global warming potential and zero ozone depletion potential. Compatible indoor equipment must include the required R-454B refrigerant detection and mitigation system.
Designed for Reliable Outdoor Service
Louvered heavy-gauge steel panels help protect the internal components, while the zinc-coated base resists rust and corrosion. Conveniently grouped refrigerant connections and electrical inlets also provide easier access during installation and service.
Upgrade to dependable Lennox heating and cooling with the ML14KP1-030-230. Match this 2.5-ton heat pump with compatible indoor equipment for efficient year-round home comfort.
Versatile Airflow for Dependable Home Comfort
Support comfortable temperatures throughout your home with the Lennox Merit CBK45UHPT-030 2.5 Ton Air Handler. Built for compatible R-454B split systems, this indoor unit combines flexible upflow or horizontal installation with a Lennox Quantum™ Coil and multi-speed blower operation.
The CBK45UHPT-030 provides a nominal 2.5-ton capacity. Its factory-installed expansion valve and refrigerant detection components help simplify the creation of a properly matched R-454B air-conditioning or heat-pump system.
Key Features
- 2.5 Ton Air Handler – Supports compatible residential air-conditioning and heat-pump systems.
- Multiple Installation Positions – Designed for upflow and horizontal applications.
- Lennox Quantum™ Coil – Aluminum alloy construction offers effective heat transfer and corrosion resistance.
- Factory-Installed TXV – Regulates refrigerant flow according to system operating conditions.
- Multi-Speed PSC Blower – Provides selectable airflow settings for the matched equipment.
- R-454B Refrigerant Detection System – Factory-installed components support safe system operation.
- Insulated, Low-Leakage Cabinet – Helps keep conditioned air moving through the duct system.
Durable Lennox Quantum™ Coil
The Quantum™ Coil uses enhanced aluminum alloy tubing, headers, and ripple-edged fins to provide excellent corrosion resistance. Its design promotes effective heat transfer and low air resistance, while high-pressure factory testing helps ensure leak-resistant construction.
Selectable Blower Performance
The unit's multi-speed PSC blower motor allows the installer to select an appropriate airflow setting for the complete HVAC system. A time-delay blower relay helps manage blower startup and shutdown during cooling and continuous-fan operation.
Factory-Equipped for R-454B
A wide-range R-454B check and expansion valve is installed inside the cabinet at the factory. The air handler also includes a refrigerant detection sensor and control board designed to respond if refrigerant is detected and resume normal operation after safe conditions are restored.
Installation Flexibility and Service Access
The CBK45UHPT-030 ships for upflow or horizontal right-hand installation and can be field converted for horizontal left-hand airflow. Removable cabinet panels provide complete service access, while the filter door and external refrigerant connections help make routine maintenance and installation more convenient.
Pair the Lennox Merit CBK45UHPT-030 with compatible R-454B equipment for reliable 2.5-ton performance, flexible installation, and comfortable indoor airflow.
Optional Electric Heat for Added Cold-Weather Comfort
Customize your Lennox heat pump system with an optional electric heat kit for additional heating support when outdoor temperatures drop. Installed inside the compatible Lennox CBK45 Series air handler, the heat kit provides electric resistance heat that works with the air handler's blower to distribute warm air through your home's existing duct system.
Available heat-kit capacities vary by the selected system and air handler, allowing the equipment to be matched to the home's heating requirements and available electrical service. Compatible configurations may be available with or without factory-mounted circuit breakers.
Electric Heat Kit Benefits
- Supplemental Heating – Adds an additional source of heat when the heat pump requires assistance during colder weather.
- Multiple Heating Capacities – Select systems are available with electric heat options ranging from 4 kW to 15 kW, depending on equipment compatibility.
- 208-230V Single-Phase Operation – Designed for compatible residential electrical applications.
- Responsive Heat Transfer – Helix-wound nichrome heating elements are positioned directly in the airflow to efficiently transfer heat into the moving air.
- Built-In Temperature Protection – Limit controls help protect the heating elements against excessive operating temperatures.
- Factory-Assembled Controls – Heat-kit controls and components are assembled and wired for installation inside the compatible air handler.
- Breaker and Non-Breaker Options – Depending on the selected capacity and system configuration, heat kits may be available with factory-mounted circuit protection or a terminal-block connection.
Choose the Right Heat Kit for Your Home
The correct electric heat kit should not be selected by system tonnage alone. Heating requirements, air-handler compatibility, airflow, supply voltage, available electrical service, wire sizing, circuit protection, and local electrical-code requirements should all be considered when selecting an electric heat option.
Select an available electric heat kit when configuring your system to add dependable supplemental heating for colder conditions. Final equipment compatibility and electrical requirements must be verified by a qualified HVAC or electrical professional.
Who installs the AC unit after I purchase it?
ACDirect does not yet provide installation services directly. However, most of our customers successfully arrange installation through local licensed HVAC contractors. These systems are designed for professional installation and typically include the components your installer will need.
Here’s how it works:
- Hire a licensed HVAC technician in your area
- Use platforms like Angi, Thumbtack, or a local HVAC directory to find reliable professionals
- Confirm your installer is experienced with the system type you’re purchasing
Note:
Please be aware if you choose to install HVAC equipment yourself and don’t possess proper HVAC licensing, you will void the manufacturer’s factory warranty. If you are capable of a factory-compliant installation yourself, you will need a licensed HVAC contractor to sign off on your work, fully confirming factory-compliant workmanship.
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