Upgrade your home comfort with the 2 Ton Merit Two-Stage System—an affordable, energy-efficient bundle that delivers precise heating and cooling year-round. Featuring the ML17KC2 air conditioner, ML180V gas furnace, and CK40HT-30A-71 horizontal evaporator coil, this system balances comfort, quiet operation, and long-term savings. With SEER2 17 and EER2 13.8 ratings, it meets 2025 standards while keeping your energy bills low.
Why Homeowners Choose This System ✅ Two-stage cooling for consistent, efficient comfort ✅ High SEER2 17 & EER2 13.8 = maximum energy savings ✅ Variable-speed furnace for smooth, even heating ✅ Quiet operation without sacrificing performance ✅ Affordable bundle—get AC, furnace & coil together ✅ Future-ready with eco-friendly refrigerant
2 Ton Merit Two-Stage System That Saves Energy & Money
Upgrade your home’s heating and cooling experience with the 2 Ton Merit Two-Stage System. This all-in-one bundle includes the ML17KC2 air conditioner, ML180V gas furnace, and CK40HT-30A-71 horizontal evaporator coil. Imagine precise, year-round comfort, lower energy bills, and quiet operation—all in one affordable package.
SEER2: 17
EER2: 13.8
With a SEER2 of 17 and EER2 of 13.8, this two-stage system provides efficient cooling and heating, keeping your home cozy while reducing energy costs. Plus, it meets 2025 refrigerant standards, giving you a modern, environmentally friendly system without breaking the bank.
Smart Two-Stage Cooling – ML17KC2 Air Conditioner
Stay perfectly comfortable all year with the ML17KC2 air conditioner. Its two-stage compressor automatically adjusts cooling output, giving you consistent indoor temperatures without unnecessary energy use. Energy-efficient and quiet, it operates at sound levels as low as 73 dB. Being ENERGY STAR® Certified, it also qualifies for federal tax credits, helping you save even more. Better heat transfer and minimal air resistance make your home cooling fast and effective.
Efficient, Variable-Speed Heating – ML180V Gas Furnace
Experience smooth, reliable warmth with the ML180V gas furnace. Its variable-speed fan motor keeps your home evenly heated while reducing hot and cold spots. Dual-fuel capability lets it seamlessly switch between gas and electricity when paired with a Lennox® heat pump, saving you money all year long. Quiet and energy-efficient, this furnace gives you comfort without distraction.
The CK40HT-30A-71 evaporator coil ensures your system runs efficiently and safely. Its aluminum-cased, full-cased design supports flexible installation, while the factory-installed TXV and Refrigerant Detection System (RDS) provide reliable performance and safety. Built to last, this coil works seamlessly with R-454B refrigerant, ensuring your home stays comfortable while meeting modern EPA standards.
Why the 2 Ton-Merit Two-Stage System Makes Life Easier
Save on energy bills thanks to high SEER2/EER2 ratings.
Enjoy consistent comfort with two-stage cooling and variable-speed heating.
Reduce noise with quiet operation in every component.
Simplify installation with a complete, braze-free bundle.
Invest in durability with long-lasting, premium components.
Be environmentally responsible with R-454B lower-GWP refrigerant.
This bundle is perfect for homeowners who want reliable comfort, energy savings, and an affordable upgrade without the hassle of managing separate components.
Key Benefits at a Glance
✅ Precise, two-stage 2 Ton cooling for year-round comfort ✅ SEER2 17 and EER2 13.8 for energy efficiency and savings ✅ Quiet, variable-speed operation for smooth heating ✅ Complete bundle: air conditioner, furnace, and horizontal coil ✅ Easy, braze-free installation for modern HVAC systems ✅ Built-in Refrigerant Detection System for safe operation ✅ Affordable, energy-efficient, and future-ready
Air Conditioner Overview
Model #:ML17KC2-024
Product Overview:
Merit® Series | ML17KC2 Air Conditioner – Mid-Efficiency, Two-Stage Cooling
The Merit® Series ML17KC2 is a mid-efficiency, two-stage air conditioner unit designed to provide dependable cooling and energy savings. Compatible with 2025 Compliant Refrigerant, this central air AC unit delivers consistent comfort while meeting modern EPA and industry energy standards. For homeowners searching for air conditioning systems or air conditioning units for homes, the ML17KC2 offers reliable performance, durability, and quiet operation.
Energy Efficiency & Performance
With an efficiency rating up to 17.00 SEER2, this air conditioner with heat and air reduces energy costs while keeping your home comfortable. ENERGY STAR® Certified, the unit meets or exceeds federal energy-efficiency guidelines. Its high-efficiency outdoor coil maximizes heat transfer while minimizing air resistance, making it a top choice for those seeking residential HVAC systems or home AC units. The two-stage compressor provides more precise cooling, enhancing comfort and efficiency for your central air conditioning system.
Quiet & Comfortable Operation
Operating at sound levels as low as 73 dB, this air conditioning unit central air keeps your home peaceful and quiet. The direct-drive, precision-balanced outdoor fan reduces noise while increasing product longevity, making it an ideal air conditioner for sale for residential or light commercial spaces.
Craftsmanship & Reliability
The Quantum™ Coil, made from exclusive aluminum alloy, is engineered to withstand harsh weather conditions, ensuring long-term reliability. The heavy-gauge, galvanized steel cabinet includes a louver coil guard, baked-on powder finish, and zinc-coated steel base to resist rust and corrosion. Braze-free installation flexibility supports 2025 compliant systems, and drainage holes prevent moisture buildup inside the base pan. This air conditioning unit for homes is built for durability and performance.
Safety & Sustainability
Using R-454B refrigerant, the ML17KC2 complies with 2025 EPA lower-GWP standards. The built-in Refrigerant Detection System (RDS) ensures A2L refrigerant safety compliance by detecting leaks, stopping operation, and activating the indoor blower to safely disperse refrigerant.
Complete Comfort System Option
Pair the ML17KC2 Air Conditioner with a compatible Lennox® furnace and evaporator coil to create a full heating and air conditioning system for year-round comfort, providing efficient, reliable performance in any home.
Key Benefits at a Glance
✅ Mid-efficiency, two-stage air conditioner unit with up to 17.00 SEER2 rating ✅ ENERGY STAR® Certified for energy efficiency ✅ Durable Quantum™ Coil designed for extreme conditions ✅ Quiet operation at sound levels as low as 73 dB ✅ Flexible braze-free installation design ✅ Built-in Refrigerant Detection System for enhanced safety ✅ Bundle option available with furnace and coil for complete home comfort
Product Specifications:
Brand
Lennox
Catalog Number
25U62
Model/Part Number
ML17KC2-024-230
Base Unit of Measure
Unit(S)
Family
ML17KC2
Series
Merit
Type
Two-stage Air Conditioner
Nominal Cooling Capacity
2 Ton
Product Voltage
208-230 VAC 1 Ph 60Hz
Product Depth
28.25 Inch
Product Width
28.25 Inch
Product Height
29.25 Inch
Compressor Type
2 Stage
Number of Compressors
1 Compressor
SEER2
Up to 17.00 SEER2
EER2
Up to 14.00 EER2
Gross Weight
185 Lbs.
Liquid Line OD
3/8 Inch
Suction Line OD
3/4 Inch
Energy Star Certified
Yes
Refrigerant Type
R-454B
Furnace Overview
Model #: ML180UH045V36A
Order #: 17Y68
Product Overview:
Merit® Series | ML180V Gas Furnace – Single-Stage, 80% Fuel-Efficient with Variable-Speed Fan Motor
The Merit® Series ML180V is a single-stage gas furnace designed to deliver reliable, efficient home heating with precise temperature control. Its variable-speed fan motor minimizes temperature swings, improves humidity control, and optimizes energy use, providing consistent comfort and efficiency for any residential HVAC system. Homeowners looking for furnace repair service, heating & air companies, or a dependable furnace and heating unit will find the ML180V a versatile and energy-efficient choice.
Energy Efficiency & Performance
With an 80% AFUE efficiency rating, this heating and furnace unit keeps your home comfortable while reducing energy costs. The variable-speed fan motor automatically adjusts airflow to maintain consistent temperatures and maximize energy savings. Dual-fuel capability allows pairing with a Lennox® heat pump, enabling the system to switch seamlessly between electricity and gas for optimal efficiency. This makes it a great option for anyone searching for heating and cooling systems for homes or furnace and air conditioning replacement.
Quiet & Comfortable Operation
The variable-speed fan motor delivers smooth, quiet airflow throughout your home, reducing hot and cold spots for a more comfortable living environment. This heating and air supply unit ensures consistent warmth while operating efficiently and quietly.
Craftsmanship & Reliability
Constructed from high-quality steel, the ML180V is built for durability and long-lasting performance. Designed to meet Lennox standards, this furnace and heating system performs reliably under varying conditions, providing homeowners with peace of mind and dependable heating.
Safety & Sustainability
The ML180V meets industry safety standards for secure operation. Dual-fuel capability supports energy savings and environmentally responsible operation, helping reduce your carbon footprint.
Complete Comfort System Option
Pair the ML180V Gas Furnace with a compatible Lennox® air conditioner or heat pump to create a full heating and air conditioning system for year-round comfort, delivering efficient and reliable performance for your home.
Key Benefits at a Glance
✅ Single-stage, 80% AFUE gas furnace with variable-speed fan motor ✅ Dual-fuel capable with Lennox® heat pump pairing ✅ Provides precise temperature control and improved humidity management ✅ Constructed with high-quality steel for long-lasting durability ✅ Quiet, consistent operation for enhanced comfort ✅ Bundle option available with AC or heat pump for year-round comfort
Product Specifications:
Brand
Lennox
Catalog Number
17Y68
Model/Part Number
ML180UH045V36A
Base Unit of Measure
Unit(S)
Family
ML180V
Series
Merit
Heating Capacity
44000 Btuh
Heating Efficiency
80% AFUE
Configuration
Upflow/Horizontal
Blower Size
3 Ton
Gas Stages
1 Stage Heat
Blower Type
Variable Speed
Product Voltage
115 VAC 1 Ph 60 Hz
Product Depth
27.75 Inch
Product Width
14.5 Inch
Product Height
33 Inch
Gross Weight
104 lbs.
Type
1-Stage Variable Speed Horizontal Gas Furnace
Energy Star Certified
No
California Only
This furnace does not meet the South Coast Air Quality Management District (SCAQMD) Rule 1111 and San Joaquin Valley Air Pollution Control District (SJVAPCD) Rule 4905 NOx emission limit (14 ng/J) and cannot be installed within the SCAQMD and SJVAPCD areas.
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.
