4 Ton – Variable Speed Heat Pump System – Dave Lennox Signature Collection – Precision Comfort with Free Installation
The 4 Ton – Variable Speed Heat Pump System – Dave Lennox Signature Collection is a complete all-electric Dave Lennox Signature® Collection comfort system. It pairs the SL22KLV-048-230 cold climate heat pump, the CBK48MVT-048-71 variable-speed air handler and an ECB48-15CB-P 15 kW electric heat kit for efficient heating down to –20 °F, precise cooling and quiet operation – installed free with your purchase by Temperature Pros in Dallas, TX.
This bundle includes:
- SL22KLV-048-230 Heat Pump (Order #25K44) – variable-capacity, up to 20.5 SEER2 / 9.8 HSPF2
- CBK48MVT-048-71 Variable-Speed Air Handler (Order #25J79) – communicating blower with Quantum™ Coil
- ECB48-15CB-P Electric Heat Kit (Order #27A56) – 15 kW of supplemental backup heat
SEER2: 20
HSPF2: 8.5
SEER2 & HSPF2 Ratings
This system is AHRI certified (AHRI #216776087) at 20 SEER2 and 8.5 HSPF2. Variable-capacity operation means the heat pump modulates in increments as small as 1% instead of cycling on and off, holding steady indoor temperatures while using less energy in both heating and cooling.
Cold Climate Variable-Capacity Heating
The SL22KLV-048-230 Heat Pump delivers:
- Up to 20.5 SEER2, 12.4 EER2 and 9.8 HSPF2
- ENERGY STAR® Cold Climate certified – reliable heating down to –20 °F
- Electronic Refrigerant Injection and Advanced Cold Climate Performance mode for warmer supply air
- Sound levels as low as 58 dBA (61 – 74 dBA AHRI 270 range) with SilentComfort™ technology
- Demand defrost and Climate IQ™ humidity optimization
✅ Key Benefit: Gas-furnace-like comfort from an all-electric system, even on the coldest Texas nights.
Variable-Speed Air Handler & Electric Heat
The CBK48MVT-048-71 Air Handler with ECB48-15CB-P heat kit provides:
- Variable-speed communicating blower for quiet, even airflow and superior humidity control
- Quantum™ Coil with R-454B compatibility and antimicrobial drain pan
- 15 kW electric heat kit for supplemental and emergency heat
- Multi-position installation with factory-installed Refrigerant Detection System
✅ Key Benefit: Quiet, precise airflow and dependable electric heat in one cabinet.
Why Choose The 4 Ton – Variable Speed Heat Pump System – Dave Lennox Signature Collection?
- AHRI certified performance – 20 SEER2 / 8.5 HSPF2 (AHRI #216776087)
- Fully communicating system – requires the Lennox S40 Smart Wi-Fi Thermostat (sold separately) for full variable-capacity control
- 10-year limited warranty on the compressor and covered components
- 2025-compliant R-454B refrigerant with built-in leak detection
- Free professional installation by Temperature Pros in Dallas, TX
Upgrade your Dallas home with the 4 Ton – Variable Speed Heat Pump System – Dave Lennox Signature Collection – the quietest, most precise comfort Lennox offers, installed free with your purchase.
Heat Pump Overview
Model #: SL22KLV-048-230
Order #: 25K44
Product Overview
Dave Lennox Signature® Collection | SL22KLV Cold Climate Heat Pump
Variable-Capacity, Communicating Heating & Cooling – 2025 Compliant with R-454B Refrigerant
The Lennox SL22KLV Heat Pump heats and cools with Precise Comfort® variable-capacity performance, modulating compressor output in increments as small as 1% and delivering reliable heating down to –20 °F. Matched with a Lennox communicating variable-speed air handler, this 4 ton system is AHRI certified at 20 SEER2 and 8.5 HSPF2.
Energy Efficiency & Performance
- Up to 20.5 SEER2, 12.4 EER2 and 9.8 HSPF2 (AHRI certified maximums for the SL22KLV-048-230 outdoor unit)
- Variable-capacity inverter-driven scroll compressor modulates in 1% increments for precise temperature and humidity control
- ENERGY STAR® Cold Climate certified and recognized as ENERGY STAR Most Efficient Cold Climate 2025
- Variable-speed outdoor fan (1/3 HP, 28 in., 2 blades) commanded over the communicating bus
- AHRI Standard 210/240-2023 certified, ETL certified (US & Canada), ISO 9001 registered manufacturing
Cold Climate Heating
- Reliable heating operation down to –20 °F; low-ambient cooling down to 0 °F
- Electronic Refrigerant Injection (ERI) increases heating output as outdoor temperatures fall
- Advanced Cold Climate Performance mode raises discharge-air temperature closer to that of a gas furnace
- Demand defrost – coil-sensing rather than timed, so the unit defrosts only when needed
Quiet Operation
- Sound levels as low as 58 dBA – AHRI 270 rated range of 61 – 74 dBA for this size
- SilentComfort™ fan guard with Passive Vortex Suppression and a precision-balanced direct-drive fan
- Compressor Sound Dampening System – vinyl/polyester composite inner and outer sound covers plus rubber dampeners
Craftsmanship & Reliability
- Quantum™ Coil – Lennox-designed aluminum alloy tube and fin with superior corrosion resistance, fully accessible for cleaning
- Composite base and top resist corrosion and lift the unit off the mounting surface, with base-pan drainage holes
- Louvered steel panels on all four sides with lift-off service access and pre-painted powder finish
- Tested to ASTM D5894 cyclic salt-fog/UV exposure – suitable for coastal areas
- Braze-free and press-fitting capable connections for flexible installation
Sustainability & Safety
- R-454B refrigerant – A2L, low GWP, zero ODP, meeting 2025 EPA refrigerant requirements
- Refrigerant Detection System (RDS) per UL 60335-2-40 – stops compressor operation and runs the indoor blower to disperse refrigerant, resuming normal operation once levels are safe
Smart Controls & System Requirements
- Climate IQ™ dehumidification with Dry/Moderate/Humid cooling and Normal/Comfort heating modes
- Lennox communicating control with seven-segment display, pressure-transducer monitoring, compressor lockout protection and 100-code alarm history
- Requires the S40 Smart Wi-Fi Thermostat (22V24), ordered separately; matches only with Lennox communicating variable-speed air handlers and furnaces
- Smart-home compatible with Amazon Alexa, Google Assistant, Control4 and Building36
- 10-year limited warranty on the compressor and covered components in residential applications
Key Benefits at a Glance
✅ Variable-capacity heating and cooling that modulates in 1% increments
✅ Up to 20.5 SEER2 / 9.8 HSPF2 efficiency
✅ ENERGY STAR® Cold Climate certified – heats down to –20 °F
✅ Sound levels as low as 58 dBA with SilentComfort™ technology
✅ Quantum™ Coil and coastal-rated cabinet construction
✅ R-454B refrigerant with built-in Refrigerant Detection System
Product Specifications:
| Brand |
Lennox |
| Catalog Number |
25K44 |
| Model/Part Number |
SL22KLV-048-230 |
| Base Unit of Measure |
Unit(S) |
| Family |
SL22KLV |
| Series |
Dave Lennox Signature® Collection (DLSC) |
| Type |
Variable Capacity Cold Climate Heat Pump |
| Nominal Cooling Capacity |
4 Ton |
| Product Voltage |
208-230 VAC 1 Ph 60Hz |
| Product Depth |
39-3/4 Inch |
| Product Width |
35-3/4 Inch |
| Product Height |
46-1/2 Inch |
| Compressor Type |
Variable Capacity Scroll (DC Inverter) |
| Number of Compressors |
1 Compressor |
| SEER2 |
Up to 20.5 SEER2 |
| EER2 |
Up to 12.4 EER2 |
| HSPF2 |
Up to 9.8 HSPF2 |
| Sound Rating (AHRI 270) |
61 – 74 dBA |
| Gross Weight |
318 Lbs. |
| Liquid Line OD |
3/8 Inch |
| Suction Line OD |
7/8 Inch |
| Energy Star Certified |
Yes – ENERGY STAR® Cold Climate |
| 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 that delivers consistent comfort and is fully compatible with 2025-compliant refrigerants. Engineered for reliable performance, this model combines proven durability with advanced airflow control.
Advanced Coil Technology
Built with all-aluminum Quantum™ Coil technology, the CBK48MVT offers superior resistance to corrosion caused by indoor environmental contaminants—ensuring long-lasting, efficient performance.
R-454B & Leak Detection Ready
Factory-configured for R-454B refrigerant, these -71 models are equipped with a Refrigerant Detection System (RDS). If a leak occurs, a built-in sensor triggers the mitigation control to initiate a flush sequence, helping maintain safe system operation and providing peace of mind.
Energy Efficiency
Quiet Operation
Home Comfort
Reliable Performance
Product Specifications:
| Brand |
Lennox |
| Catalog Number |
25J79 |
| Model/Part Number |
CBK48MVT-048-71 |
| Base Unit of Measure |
Unit(S) |
| EAN / UPC |
66255159252 |
| Family |
CBK48MVT |
| Series |
DLSC |
| Cooling Capacity |
4 Ton |
| Configuration |
Multi-Position |
| Blower Type |
Variable Speed |
| Coil Material |
Aluminum |
| Product Voltage |
208-230 VAC 1 Ph 60 Hz |
| Type |
Air-Handler |
| Refrigerant Type |
R-454B |
| Communicating |
Communicating |
