DLSC Series, Heat Pump, 4 Ton, 18 SEER, 1 Stage, R-410A, SL18XP1-048-230

Cat # : 12U11  |  Model/Part # : SL18XP1-048-230A01

Click to view pricing

  • For availability, please enter your zip/postal code or sign in

    Ship to (change)

  • For availability, please enter your zip/postal code or sign in

    Within 60.0 miles of:

    Select default store

    • The quantity you requested is not available at your chosen plant. We have chosen a plant within your radius that has stock.

Related Products

Product Overview

Dave Lennox Signature® Collection

SL18XP1 Heat Pump

The quietest and most efficient single-stage heat pump*

As the latest addition to the Dave Lennox Signature® Collection, the SL18XP1-048-230 offers efficiencies up to 18.50 SEER and 10.20 HSPF, with sound levels as low as 67 decibels.

Signature® Performance & Comfort

  • The quietest single-stage heat pump on the market: as low as 67 decibels! Approximately 40 times quieter than a standard heat pump*
  • Scroll compressor helps precisely control air temperature for greater comfort
  • The SL18XP1 system paired with an iComfort® S30 thermostat monitors humidity levels and removes excessive moisture that can cause mold growth, creating healthier, more comfortable air
  • Compatible with the exclusive Healthy Climate® ozone-free Indoor Air Quality Solutions system
  • SunSource® solar-ready design – maximizes energy savings by integrating the unit with one to sixteen solar modules

Reliability & Performance

  • The Lennox Quantum™ Condenser Coil can help protect against corrosion in harsh environments, including coastal areas
  • All-aluminum fortified tube and fin construction provides efficient heat transfer, lighter weight, and ease of cleaning
  • Durable single stage scroll compressor
  • 10-year limited warranty on compressor and covered components

Easier Handling & Cleaning

  • Lighter weight for easier (and safer) handling
  • Water-only cleaning: no coil cleaner purchase
  • Water-only cleaning appeals to the environmentally-conscious consumer
  • Lennox provides complimentary training for this new cleaning system

Energy Efficiency

  • The most efficient single-stage heat pump*
  • Up to 18.50 SEER and 10.20 HSPF efficiency ratings
  • Unit may qualify for many state utility rebates
  • ENERGY STAR® qualified
  • Dual-fuel option pairs the SL18XP1 with a Lennox communicating gas furnace. The SL18XP1 provides warmth as temperatures drop. On extremely cold days, the gas furnace takes over to maintain maximum comfort

*Actual system efficiency may vary depending on the exact system match. Efficiencies are representative of a single AHRI Most Popular matched combination. Always verify actual system efficiencies through AHRI or by visiting AHRI ratings database at Must be accompanied by either a Lennox variable speed air handler or furnace and an iComfort® communicating thermostat.

Brand Lennox
Catalog Number 12U11
Model/Part Number SL18XP1-048-230A01
Minimum Order Quantity 0.0
Base Unit of Measure Unit(S)
Product Voltage 208/230v 1ph 60 hz
Compressor 1 Stage
Refrigerant R-410A
Gross Weight 349 LB
Family SL18XP1
Cooling Capacity 4.0 Ton Cooling
Efficiency 15.0 SEER
Series Dave Lennox Signature Collection
New Catalog #'s
New Catalog #'s
12U11 was replaced by

Select a Store


Location Distance Availability
  • There are no available branches for this radius and zipcode.
Would you like to create a proposal for a new lead?
Would you like to create a proposal for existing lead?

Please Sign In to Continue