The Merit® Series 1.5 Ton Single Stage All Electric System is a complete home comfort solution, including the ML14KC1-018 air conditioner, CBK45UHPT air handler, and ECB45-10CB-P electric heat kit. Enjoy reliable, energy-efficient cooling and supplemental electric heat with advanced safety features and fully 2025-compliant R-454B refrigerant.
Key Benefits: ✅ 1.5 Ton single-stage system for year-round comfort ✅ SEER2 15.5 and EER2 13.2 for efficient performance ✅ Quiet operation with sound levels as low as 73 dB ✅ Complete bundle with air conditioner, air handler, and heat kit
Upgrade your home’s cooling system with the 1.5 Ton Single Stage All Electric System. This complete bundle includes the ML14KC1-018 air conditioner, CBK45UHPT-018-71 PSC air handler, and ECB45-10CB-P electric heat kit, delivering reliable, energy-efficient year-round comfort while meeting 2025 R-454B refrigerant standards.
AHRI#:215579811
SEER2: 15.5 EER2:13.2
SEER2: 15.5 & EER2: 13.2 Ratings
With a SEER2 of 15.5 and EER2 of 13.2, this 1.5 Ton Single Stage All Electric System provides consistent cooling, efficient electric heating, and dependable performance. Its R-454B refrigerant ensures environmentally responsible operation and compliance with 2025 energy standards.
Efficient Cooling – Air Conditioner: ML14KC1-018
The ML14KC1-018 air conditioner provides standard-efficiency, single-stage cooling for reliable indoor comfort. ENERGY STAR® certified and eligible for federal tax credits, it features a high-efficiency outdoor coil for optimal heat transfer, a single-stage compressor for consistent operation, and quiet performance at sound levels as low as 73 dB.
Supplemental Heating – Heat Kit: ECB45-10CB-P
The ECB45-10CB-P Electric Heat Kit delivers fast, dependable backup heat. Helix-wound nichrome elements allow rapid warmth with lower element temperatures for longer service life. Built-in circuit breakers, thermal cutoffs, and pre-wired controls ensure safe, code-compliant installation and operation.
Reliable Airflow – Air Handler: CBK45UHPT-018-71
The CBK45UHPT-018-71 PSC air handler ensures steady airflow and energy-efficient performance. Its all-aluminum Quantum™ Coil resists corrosion, while the fully insulated cabinet reduces noise and prevents condensation. The integrated Refrigerant Detection System (RDS) enhances safety in the event of a refrigerant leak, automatically activating a mitigation flush sequence.
Why Choose the 1.5 Ton Single Stage All Electric System?
This system is perfect for homeowners seeking a complete, integrated cooling and electric heating solution. It delivers reliable temperature control, efficient energy usage, and quiet airflow in one package. Fully 2025-compliant and compatible with R-454B refrigerants, it ensures long-term comfort, energy savings, and peace of mind.
Key Benefits at a Glance
✅ Year-round comfort ✅ SEER2 15.5 and EER2 13.2 for efficient cooling and heating ✅ Quiet operation with sound levels as low as 73 dB ✅ Complete bundle with air conditioner, air handler, and electric heat kit ✅ PSC motor for reliable airflow and energy savings ✅ Built-in Refrigerant Detection System (RDS) for added safety ✅ Fully 2025-compliant system with eco-friendly R-454B refrigerant
Air Conditioner Overview
Model #: ML14KC1-018
Product Overview:
Merit® Series | ML14KC1 Air Conditioner – Affordable Cooling for Your Home
The Merit® Series ML14KC1 is an affordable air conditioner built for reliable and energy-efficient performance. Designed to work with the new 2025 Compliant Refrigerant, it is both future-ready and environmentally responsible. As a result, homeowners enjoy consistent comfort while minimizing their energy costs with a high-performance central air conditioning system.
Energy Efficiency & Performance
With a 14.30 SEER2 efficiency rating, this air conditioner meets or exceeds industry energy standards. In addition, it is ENERGY STAR® Certified, ensuring it complies with federal guidelines for energy efficiency. Eligible for the Federal Tax Credit under the Energy Efficient Home Improvement Credit (IRC Section 25C), this unit helps homeowners save money while reducing their environmental footprint. The high-efficiency outdoor coil improves heat transfer and reduces air resistance, making it a reliable option for air conditioning systems in residential homes. The single-stage compressor runs at full capacity as needed, providing dependable and consistent cooling for every room.
Quiet & Comfortable Operation
The ML14KC1 operates at sound levels as low as 73 dB, creating a peaceful indoor environment. Furthermore, the direct-drive, precision-balanced outdoor fan reduces noise while extending product longevity. Therefore, this air conditioner offers both comfort and quiet performance, perfect for modern heating and air conditioning units.
Craftsmanship & Reliability
Featuring the Quantum™ Coil made from proprietary aluminum alloy, this unit is engineered to withstand the harshest weather conditions. The heavy-gauge galvanized steel cabinet includes a louver coil guard, zinc-coated base, and baked-on powder finish to resist rust and corrosion. Additionally, the braze-free installation design ensures flexibility with 2025 compliant systems, while built-in drainage holes prevent moisture accumulation. Consequently, homeowners get a durable and long-lasting air conditioners units solution.
Safety & Sustainability
This air conditioner uses R-454B refrigerant, compliant with 2025 EPA lower-GWP standards. In addition, the built-in Refrigerant Detection System (RDS) ensures A2L safety compliance by detecting leaks, halting operation, and safely dispersing refrigerant. Therefore, users benefit from safe, efficient performance within their heating air conditioning system.
Affordable Cooling Bundle with Furnace and Horizontal Coil
For complete home climate control, pair the ML14KC1 with a compatible Lennox® furnace and horizontal coil. This bundle creates a fully integrated heating and cooling systems solution, providing efficient, year-round comfort and reliable performance for your home.
Key Benefits at a Glance
✅ Affordable air conditioner with 14.30 SEER2 efficiency ✅ ENERGY STAR® Certified and federal tax credit eligible ✅ Built to last with Quantum™ Coil and heavy-duty cabinet ✅ Quiet operation at sound levels as low as 73 dB ✅ Affordable cooling bundle with furnace and horizontal coil available ✅ Ideal complete home cooling and heating system
Product Specifications:
Brand
Lennox
Catalog Number
25C86
Model/Part Number
ML14KC1-018-230
Base Unit of Measure
Unit(S)
Family
ML14KC1
Series
Merit
Type
Single-Stage Air Conditioner
Nominal Cooling Capacity
1.5 Ton
Product Voltage
208-230 VAC 1 Ph 60Hz
Product Width
28.7 Inch
Product Height
29.1 Inch
Compressor Type
1 Stage
Number of Compressors
1 Compressor
SEER2
Meets or exceeds 14.30 SEER2
Gross Weight
155.0 Lbs
Liquid Line OD
3/8 Inch
Suction Line OD
3/4 Inch
Energy Star Certified
Yes
Refrigerant Type
R-454B
Product Length
28.7 Inch
Heat Kit Overview
Model #ECB45-10CB
Product Overview
Lennox ECB45 Electric Heat Kits
ETL listed for safety and compliance.
Designed for field installation inside the unit cabinet.
Offered in a variety of voltage and kilowatt configurations—refer to specific Air Handler Tables for details.
Features helix-wound nichrome heating elements directly exposed to the airflow, ensuring rapid heat transfer, lower element temperatures, and extended service life.
Each heating element includes a precisely positioned limit control with a fixed shut-off temperature and automatic reset function.
An additional thermal cutoff limit control offers reliable protection against excessive temperatures.
Control box and access cover are made from heavy-gauge galvanized steel for durability.
Delivered factory-assembled with pre-installed and pre-wired controls.
Low voltage electric heat controls connect to the air handler via plug-in.
Circuit Breaker Models (CB)
All “CB” models come with built-in circuit breakers that provide both overload and short-circuit protection.
Circuit breakers are factory-mounted and wired within the electric heat unit.
They respond to both current surges and high temperatures.
Manual reset capability included.
In many areas, circuit breakers meet code requirements as the unit’s disconnecting means, eliminating the need for a separate field-installed disconnect.
Always consult your local electrical code for compliance.
Product Specifications
Brand
Lennox
Catalog Number
27A15
Model/Part Number
ECB45-10CB-P
Base Unit of Measure
Unit(S)
EAN / UPC
66255160138
Product Voltage
208/240v 1ph 60 hz
Gross Weight
4.5 LB
Family
ECB45
Heating Capacity
10.0 kW
Type
Electric Heat Kit with Circuit Breaker
Series
ECB45
Additional Information
60 Amp Circuit Beaker
For Use With
CBK45 & CBA25 Series Air Handlers
Product Width
11.38 Inch
Product Height
7.0 Inch
Product Depth
21.18 Inch
Air Handler Overview
Model #CBK45UHPT-018-71
Product Overview
Merit® Series
CBK45UHPT Air Handler
Standard-performance, standard-efficiency, three-speed air handler designed for compatibility with 2025 Compliant Refrigerant.
The CBK45UHPT incorporates Lennox’s all-aluminum Quantum™ Coil technology—engineered to deliver outstanding resistance to corrosion caused by indoor environmental contaminants. Paired with a three-speed blower motor, it provides dependable air circulation and efficient performance in an affordable package.
The -71 models are factory-configured for R-454B refrigerant and include a built-in Refrigerant Detection System (RDS).
Energy Efficiency
High-Efficiency Indoor Coil: Optimized for superior heat transfer and minimal air resistance, promoting efficient system performance.
Multi-Speed PSC Motor: Permanent Split Capacitor motor delivers reliable air circulation while maintaining energy-efficient operation at a lower cost.
Quiet Operation
Insulated Cabinet: Fully lined cabinet reduces operational noise and minimizes condensation to prevent cabinet sweating in warm, humid conditions.
Reliable Performance
Quantum™ Coil: Constructed with a proprietary Lennox aluminum alloy, the coil is built to endure harsh conditions for long-term reliability.
Antimicrobial Drain Pan: Designed to resist mold and mildew growth, helping maintain better indoor air quality and reducing the risk of drain line blockages.
SEER stands for Seasonal Energy Efficiency Ratio. It measures the cooling efficiency of an air conditioner or heat pump over an entire cooling season. Essentially, it tells you how much cooling output (BTUs) you get for every unit of energy (watt-hour) used.
Higher SEER = more efficient
SEER ratings have traditionally been used in the U.S. to compare energy efficiency across systems.
Example: A 14 SEER unit uses less electricity than a 10 SEER unit to produce the same cooling.
What is SEER2?
SEER2 is the updated efficiency rating standard that reflects new federal testing procedures implemented by the Department of Energy (DOE) in 2023. It measures efficiency more accurately by accounting for real-world conditions, including:
Energy usage in modern airflow and installation configurations
More realistic climate and seasonal variations
Changes in the refrigerants and equipment designs
Key difference: SEER2 ratings tend to be slightly lower than SEER ratings for the same unit, but they provide a truer representation of actual efficiency in your home.
Why SEER2 is the new standard
The DOE updated testing to better match how systems perform in real homes, rather than ideal lab conditions.
It encourages manufacturers to improve real-world efficiency, not just test-case efficiency.
For consumers, SEER2 ensures:
Better long-term energy savings
Improved comfort through more accurate performance expectations
Compliance with modern federal efficiency regulations
In short:
SEER = old efficiency measurement (ideal lab conditions)
SEER2 = modern, realistic efficiency standard (real-world performance)
Better quality = SEER2 units are designed and tested to give actual efficiency and savings, not just theoretical numbers.
Understanding EER vs EER2
What is EER?
EER stands for Energy Efficiency Ratio. It measures an air conditioner or heat pump’s efficiency at a single, specific outdoor temperature, usually 95°F.
Higher EER = more efficient at peak conditions.
Unlike SEER, which averages efficiency over a season, EER tells you how the unit performs under hot, steady-state conditions.
Example: A unit with an EER of 12 produces 12 BTUs of cooling for every watt of electricity consumed.
What is EER2?
EER2 is the updated testing standard introduced by the Department of Energy (DOE) to match the same real-world adjustments as SEER2.
Accounts for modern system designs, refrigerants, and installation configurations.
Measures efficiency more realistically under peak operating conditions, rather than just ideal lab setups.
Like SEER2, EER2 numbers are usually slightly lower than traditional EER, but they are a more accurate reflection of actual performance.
Why EER2 is the new standard
Ensures consistency with SEER2 testing methodology.
Reflects true cooling efficiency under extreme heat, where peak performance matters most.
Helps consumers understand real-world energy use and savings potential during the hottest days.
Meets modern federal efficiency regulations and encourages manufacturers to improve performance under actual conditions.
In short:
EER = old standard, measured under lab conditions at 95°F
EER2 = modern standard, measured under realistic, real-world peak conditions
Better quality = EER2 gives you true peak efficiency, not just theoretical performance.
