The 4 Ton Elite® Series Heat Pump System includes the EL19KPV heat pump, CBK48MVT air handler, and ECB48-15CB-P electric heat kit, providing efficient, reliable, and quiet year-round heating and cooling. Fully 2025-compliant with R-454B refrigerant, it delivers energy savings, safety, and consistent comfort for your home.
Key Benefits: ✅ Complete bundle with heat pump, air handler, and electric heat kit ✅ Braze-free installation for flexible modern HVAC setups ✅ Built-in Refrigerant Detection System (RDS) for enhanced safety ✅ Fully 2025-compliant system with environmentally responsible R-454B refrigerant
Upgrade your home’s comfort with the 4 Ton Elite® Series Heat Pump System. This complete bundle pairs the EL19KPV heat pump, CBK48MVT variable-speed air handler, and ECB48-15CB-P electric heat kit, providing efficient, quiet, and reliable year-round heating and cooling for your home.
SEER2: 18.2
SEER2 & HSPF2 Ratings
SEER2: 18.2 HSPF2: 8.4
With a SEER2 of 18.2 and HSPF2 of 8.4, this 4 Ton Elite® Series Heat Pump System delivers powerful cooling, precise heating, and energy efficiency, fully compliant with 2025 refrigerant standards. Using R-454B refrigerant, the system is designed to reduce environmental impact while keeping your home comfortable all year long.
Efficient Heating & Cooling – Heat Pump: EL19KPV
The EL19KPV heat pump provides mid-efficiency, variable-capacity heating and cooling. ENERGY STAR® Certified and eligible for federal tax credits, it reduces energy bills while maintaining quiet operation at sound levels as low as 61 dBA. The high-efficiency outdoor coil ensures excellent heat transfer, while the digital-ready system easily integrates with Lennox S30/S40 Smart Thermostats for smart home comfort control.
Supplemental Heating – Heat Kit: ECB48-15CB-P
The ECB48-15CB-P Electric Heat Kit delivers fast, reliable supplemental heat. Helix-wound nichrome elements provide rapid warmth with lower operating temperatures and extended component lifespan. Safety is ensured with limit controls, supplemental thermal cutoffs, and factory-installed circuit breakers. All controls are pre-installed and plug directly into the air handler for simple and safe installation.
Reliable Airflow – Air Handler: CBK48MVT-048-71
The CBK48MVT variable-speed air handler maintains steady airflow and energy-efficient operation. Its all-aluminum Quantum™ Coil resists corrosion from indoor contaminants. The variable-speed blower motor minimizes temperature fluctuations, delivering consistent comfort throughout the home. Optional electric backup heat provides supplemental warmth when needed. The fully insulated cabinet reduces operational noise and prevents condensation. Built-in Refrigerant Detection System (RDS) adds safety by detecting leaks and initiating a flush sequence if needed.
Why Choose the 4 Ton Elite® Series Heat Pump System?
This system is perfect for homeowners seeking a complete, high-performance heating and cooling solution. It delivers energy efficiency, quiet operation, and precise temperature control in one integrated package. Fully 2025-compliant with eco-friendly R-454B refrigerant, the system ensures long-term performance, safety, and home comfort.
Key Benefits at a Glance
✅ 4 Ton variable-capacity heat pump for year-round comfort ✅ SEER2 18.2 and HSPF2 8.4 for efficient cooling and heating ✅ Quiet operation with sound levels as low as 61 dBA ✅ Complete bundle with heat pump, air handler, and electric heat kit ✅ Braze-free installation for flexible modern HVAC setups ✅ Built-in Refrigerant Detection System (RDS) for enhanced safety ✅ Fully 2025-compliant system with environmentally responsible R-454B refrigerant
Heat Pump Overview
Model #: EL19KPV-048
Product Overview
Elite® Series | EL19KPV Heat Pump
The EL19KPV is a mid-efficiency, digital-ready, variable-capacity heat pump designed for compatibility with 2025-compliant refrigerants. It delivers a balance of performance, efficiency, and intelligent comfort control.
Energy Efficiency & Performance
Efficiency ratings up to 19.50 SEER2 and 9.00 HSPF2 deliver strong energy savings.
Variable-capacity compressor adjusts output for precise temperature and humidity control.
ENERGY STAR® Certified – meets or exceeds federal energy efficiency standards.
Eligible for federal tax credits under the Energy Efficient Home Improvement Credit (IRC Section 25C).
High-efficiency outdoor coil ensures excellent heat transfer and reduced air resistance.
Digital-ready when paired with a compatible digitally enabled furnace or air handler and a Lennox S30 or S40 Smart Thermostat.
Quiet Operation
Operates as quietly as 61 dBA for a more peaceful outdoor environment.
Precision-balanced direct-drive fan delivers quiet, reliable operation and extended equipment life.
Craftsmanship & Reliability
Quantum™ Coil Technology – Built with Lennox’s exclusive aluminum alloy and rigorously tested to withstand extreme conditions and resist corrosion.
Durable cabinet construction – Features heavy-gauge galvanized steel, louvered coil guard, baked-on powder finish, and a rugged composite base and top panel for long-lasting protection.
Base pan drainage holes prevent water accumulation, helping protect internal components.
Sustainability & Safety
Equipped with a Refrigerant Detection System (RDS) as required by new safety codes for A2L (mildly flammable) refrigerants.
The system includes a leak detection sensor and a control board that shuts down the unit and activates the indoor blower to safely disperse leaked refrigerant.
Utilizes R-454B refrigerant, compliant with 2025 EPA low Global Warming Potential (GWP) regulations.
Product Specifications:
Brand
Lennox
Catalog Number
25J83
Model/Part Number
EL19KPV-048-230
Base Unit of Measure
Unit(S)
Family
EL19KPV
Series
Elite
Product Voltage
208-230 VAC 1 Ph 60 Hz
Cooling Capacity
4 Ton
Product Depth
35 Inch
Product Width
30.5 Inch
Product Height
45 Inch
Compressor Stages
Variable Capacity
Type
Variable Capacity Heat Pump
SEER2
Up to 19.5 SEER2
HSPF2
Up to 9.0 HSPF2
Gross Weight
270 Lbs.
Refrigerant Type
R-454B
Heat Kit Overview
Model #: ECB48-15CB-P
Product Overview
Lennox ECB48 Electric Heat Kits
The Lennox ECB48 Electric Heat Kits are ETL listed and designed for field installation within the unit cabinet. These kits are available in a range of voltage and kilowatt (kW) options—refer to specific Air Handler Tables for proper sizing and compatibility.
Each kit features helix-wound nichrome heating elements positioned directly in the airstream for fast heat transfer, lower operating temperatures, and extended service life. Every element includes a precisely located limit control with a fixed shut-off temperature and automatic reset, ensuring reliable thermal protection. A supplemental thermal cutoff provides an added layer of safety in case of high-temperature conditions.
Heater control relays are included as standard and manage the staging of heating elements based on control board input. Elements are brought online sequentially and in equal stages, with built-in time delays to ensure efficient operation.
The control box and access panel are constructed from heavy-gauge galvanized steel for durability. All components are factory assembled, pre-installed, and wired for quick and easy setup. Low-voltage electric heat controls connect directly to the air handler via a plug-in interface.
Circuit Breaker Models (CB)
“CB” model heaters include integrated circuit breakers that offer both overload and short circuit protection. These breakers are:
Factory-mounted and wired within the electric heat unit
Current-sensitive and temperature-actuated
Manually resettable for added user control
In many jurisdictions, these circuit breakers are recognized as an acceptable disconnecting means, eliminating the need for a separate field-supplied disconnect. Always verify local electrical codes to ensure compliance with installation requirements.
Product Specifications:
Brand
Lennox
Catalog Number
27A56
Model/Part Number
ECB48-15CB-P
Base Unit of Measure
Unit(S)
EAN / UPC
66255161447
Product Voltage
208/230v 1ph 60 hz
Gross Weight
7.95 LB
Family
ECB48
Series
ECB48
For Use With
CBK48 Series Air Handlers
Air Handler Overview
Model #CBK48MVT-048-71
Product Overview
CBK48MVT Air Handler
The CBK48MVT is a high-efficiency, variable-speed air handler offering standard performance and built to support 2025-compliant refrigerants.
Engineered with all-aluminum Quantum™ Coil technology, this model delivers superior resistance to corrosion caused by indoor environmental contaminants. Paired with a variable-speed blower motor, it ensures steady, even airflow while minimizing temperature fluctuations for enhanced comfort.
All -71 models are factory-configured for R-454B refrigerant and include a built-in Refrigerant Detection System (RDS). If a leak is detected, the onboard sensor signals the mitigation system to activate a flush sequence, ensuring safe operation and peace of mind.
Energy Efficiency
High-efficiency indoor coil offers excellent heat transfer and low airflow resistance, contributing to superior energy performance.
Variable-speed motor maintains consistent airflow and helps eliminate temperature swings throughout the home.
Quiet Operation
A fully insulated cabinet reduces operating noise and helps prevent condensation (sweating) in warm, humid conditions.
Home Comfort
Offers optional electric backup heat to provide immediate warmth when needed, adding extra comfort during colder weather.
Reliable Performance
Equipped with an antimicrobial drain pan that resists mold and mildew growth—helping improve indoor air quality and minimize 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.
