$8,024.00Original price was: $8,024.00.$7,888.00Current price is: $7,888.00.
1.5 Ton Merit Single-Stage System – Reliable Comfort, Smart Savings
Experience year-round comfort with the 1.5 Ton Merit Single-Stage System, a complete HVAC solution featuring the ML14KC1 air conditioner, ML180E furnace, and R-454B horizontal coil. With a SEER2 of 16.8 and EER2 of 14.2, this ENERGY STAR® certified system delivers efficient cooling and heating, quiet operation, and durable performance. The single-stage compressor and 80% AFUE furnace provide steady, reliable temperature control, while built-in safety features like the Refrigerant Detection System ensure peace of mind.
Ideal for homeowners seeking dependable comfort and affordability, this system is easy to maintain and fully integrated. For those looking for even more precise temperature control, ultra-quiet operation, or advanced energy efficiency, our multi-stage and variable-speed systems offer enhanced performance while building on the reliability you get with the Merit Single-Stage System.
1.5 Ton Merit Single-Stage System – Reliable Comfort with Free Installation
Looking for a reliable, energy-efficient way to keep your home comfortable all year long? The 1.5 Ton Merit Single-Stage System is the perfect choice. This complete central air conditioning system combines the trusted ML14KC1 air conditioner, ML180E furnace, and a horizontal R-454B evaporator coil to deliver consistent comfort, year-round efficiency, and peace of mind.
SEER2: 16.8
EER2: 14.2
With a SEER2 of 16.8 and an EER2 of 14.2, the 1.5 Ton Merit Single-Stage System helps you save on energy bills while delivering dependable performance. Moreover, every component works together seamlessly to provide quiet operation, long-lasting durability, and easy maintenance. Best of all, your purchase includes free professional installation, so you can enjoy comfort without any hassle.
Cool Comfort with the ML14KC1 Air Conditioner The ML14KC1 keeps your home cool and comfortable, quietly. In addition, it is ENERGY STAR® certified and uses R-454B refrigerant, making it eco-friendly and cost-efficient. Its Quantum™ Coil and corrosion-resistant cabinet ensure long-lasting reliability. Furthermore, the single-stage compressor delivers steady cooling throughout every room.
Efficient Heating with the ML180E Furnace Say goodbye to uneven heat! The ML180E furnace offers an 80% AFUE efficiency rating. Also, its Power Saver™ motor adjusts airflow to match your home’s needs. In addition, dual-fuel capability allows pairing with a heat pump for extra energy savings. Together, this furnace and the air conditioner provide reliable, whole-home comfort.
Durable Horizontal Coil Meanwhile, the R-454B Dedicated Evaporator Coil improves heat transfer and boosts efficiency. It also includes a Refrigerant Detection System for added safety, giving you peace of mind while your system runs at peak performance.
Why Choose the 1.5 Ton Merit Single-Stage System? This bundle delivers convenience, energy savings, and long-term reliability. It qualifies for federal tax credits and meets future 2025 refrigerant standards, making it a smart, affordable choice.
✅ Year-round comfort with a single, easy-to-manage system ✅ Energy-efficient with SEER2 16.8 and EER2 14.2 ✅ Quiet operation, durable design, and low-maintenance performance ✅ Affordable bundle of air conditioner, furnace, and horizontal coil ✅ Free professional installation with your purchase
For homeowners who want even more precise temperature control, quieter operation, or maximum energy efficiency, our multi-stage and variable-speed systems offer advanced performance while building on the reliability of the Merit Single-Stage System.
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
Furnace Overview
Model #: ML180UH045E36A
Order #: 81W21
Product Overview:
Merit® Series | ML180E Gas Furnace – Economical Heating with Power Saver™ Technology
The Merit® Series ML180E is an economical gas furnace designed for reliable comfort and efficient performance. With Lennox’s Power Saver™ constant torque motor, this furnace automatically adjusts airspeed based on demand. As a result, it operates more efficiently than standard motors while delivering consistent airflow throughout your home, making it a dependable solution for heating and air conditioning units.
Energy Efficiency & Performance
This furnace features an 80% AFUE efficiency rating, helping homeowners reduce energy costs while maintaining consistent comfort. Moreover, the Power Saver™ constant torque motor adjusts airflow to match demand, ensuring more efficient operation than traditional single-speed motors. When paired with a Lennox® heat pump, the dual-fuel capability allows the system to seamlessly switch between electricity and gas. Therefore, your heating and cooling systems provide both comfort and energy savings.
Quiet & Comfortable Operation
Thanks to the constant torque motor, airflow is smoother and quieter compared to conventional furnaces. In addition, the furnace ensures even heat distribution throughout your home, minimizing hot and cold spots. Consequently, it delivers reliable, ac and heating performance while keeping every room comfortable year-round.
Craftsmanship & Reliability
Constructed from high-quality steel, the ML180E furnace offers long-lasting durability. It is rigorously tested to endure years of consistent operation, regardless of environmental conditions. Furthermore, Lennox’s commitment to performance ensures your heating & ac system operates efficiently for years to come.
Safety & Sustainability
This furnace meets all industry safety standards for dependable operation. Additionally, dual-fuel capability reduces reliance on fossil fuels when paired with a Lennox® heat pump. As a result, homeowners benefit from a more environmentally friendly solution within their heating air conditioning system.
Affordable Heating & Cooling Bundle Option
For complete year-round comfort, pair the ML180E furnace with a compatible Lennox® air conditioner or heat pump. This bundle creates a fully integrated air conditioning units for homes and heating solution, providing energy-efficient performance in a single, reliable system.
Key Benefits at a Glance
✅ Economical gas furnace with 80% AFUE efficiency ✅ Power Saver™ motor for quieter, more efficient operation ✅ Dual-fuel capable for energy savings with a Lennox® heat pump ✅ Built with durable, high-quality steel ✅ Consistent, even heating for improved home comfort ✅ Affordable bundle option with air conditioner or heat pump available
Product Specifications:
Brand
Lennox
Catalog Number
81W21
Model/Part Number
ML180UH045E36A
Base Unit of Measure
Unit(S)
Family
ML180E
Series
Merit
Heating Capacity
44000 Btuh
Heating Efficiency
80% AFUE
Configuration
Upflow/Horizontal
Blower Size
3 Ton
Gas Stages
1 Stage Heat
Blower Type
Constant Torque
Product Voltage
115 VAC 1 Ph 60 Hz
Product Depth
27.75 Inch
Product Width
14.5 Inch
Product Height
33 Inch
Gross Weight
111 lbs.
Type
1-Stage Constant Torque Horizontal Gas Furnace
Energy Star Certified
No
California Residents Only This furnace does not comply with the South Coast Air Quality Management District (SCAQMD) Rule 1111 or the San Joaquin Valley Air Pollution Control District (SJVAPCD) Rule 4905 NOx emission limit of 14 ng/J. It cannot be installed in areas regulated by the SCAQMD or SJVAPCD.
Horizontal Coil
Model #: CK40HT-30A-71
Order #: 25V08
Product Overview:
Merit® Series | R-454B Dedicated Evaporator Coil – Reliable, Efficient, and Future-Ready
The Merit® Series R-454B Dedicated Evaporator Coil is a horizontal, aluminum-cased coil designed for seamless use with the ML14KC1 Air Conditioner and other air conditioning systems that meet 2025 refrigerant requirements. Because it is built for durability and efficiency, it delivers steady performance while aligning with modern EPA and energy standards. As a result, homeowners gain long-lasting comfort and peace of mind.
Energy Efficiency & Performance
This coil is carefully engineered for compatibility with 2025 Compliant Refrigerant (R-454B). In addition, its efficiency rating supports the performance of central air conditioning systems that meet or exceed 14.30 SEER2. Since it is ENERGY STAR® Certified, it not only meets but also exceeds federal guidelines for energy efficiency. Moreover, it qualifies for the Federal Tax Credit under the Energy Efficient Home Improvement Credit (IRC Section 25C). Finally, the high-efficiency outdoor coil is built to enhance heat transfer while also reducing air resistance, making it ideal for hvac system upgrades.
Quiet & Comfortable Operation
When paired with ML14KC1 air conditioners units, the Merit® Series coil ensures quiet operation with sound levels as low as 73 dB. Furthermore, it uses a precision-balanced, direct-drive outdoor fan that reduces noise while extending the system’s lifespan. Consequently, homeowners enjoy steady comfort without unnecessary distractions.
Craftsmanship & Reliability
The coil includes the exclusive Lennox Quantum™ Coil, made with a specialized aluminum alloy tested to endure the harshest environments. Along with this, the cabinet features heavy-gauge galvanized steel, a louver coil guard, a zinc-coated base, and a baked-on powder finish to provide excellent corrosion resistance. In addition, the braze-free installation design allows for flexible placement in heating and cooling systems, especially those prepared for 2025 standards. Built-in drainage holes also prevent moisture buildup, which means greater long-term reliability for your ac heating setup.
Safety & Sustainability
This evaporator coil uses R-454B refrigerant, which is fully compliant with upcoming EPA low-GWP requirements. At the same time, the built-in Refrigerant Detection System (RDS) ensures A2L refrigerant safety compliance by automatically stopping operation and dispersing leaks when needed. Therefore, users gain an added layer of protection while enjoying efficient heating air conditioning performance.
Complete Cooling System Option
For the best results, pair the R-454B Dedicated Evaporator Coil with the Merit® Series ML14KC1 Air Conditioner. Together, they create a complete ac and heating solution that maximizes energy savings while keeping homes comfortable year-round. In addition, this setup ensures compliance with future refrigerant standards, making it a smart investment for homeowners upgrading their heating and air conditioning units.
Key Benefits at a Glance
✅ Horizontal, aluminum-cased evaporator coil compatible with 2025 refrigerants ✅ ENERGY STAR® Certified and eligible for federal tax credit ✅ Quantum™ Coil engineered for durability and performance ✅ Quiet operation when paired with ML14KC1 systems ✅ Flexible braze-free installation design ✅ Built-in Refrigerant Detection System for enhanced safety ✅ Future-ready with R-454B lower-GWP refrigerant compliance
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.
