Exclusively Lennox / The details make the difference
Compare Lennox heat pumps: Find your kind of comfortable.
Heating and cooling in one system. Choose regular or slim Bronze, compact Silver, or flagship Gold.
Heat pumps
Two Bronze choices, one Silver, and one Gold. Compare the exact model families below.
On smaller screens, swipe the table to compare all three models.
| The details | ||||
|---|---|---|---|---|
| Unit dimensions · outdoor cabinetHeight × Width × Depth · inches | Sizes 018 / 02443¼ × 28¼ × 28¼ in. Size 03033¼ × 28¼ × 28¼ in. Size 03633¼ × 32¼ × 32¼ in. Sizes 042 / 04837¼ × 32¼ × 32¼ in. Size 06043¼ × 32¼ × 32¼ in. | Sizes 018 / 02427½ × 39 × 13⅜ in. Sizes 030 / 03630⅛ × 40⅛ × 14⅝ in. Sizes 042 / 048 / 06033 × 43⅛ × 15¾ in. | Size 02430 × 40³⁄₁₆ × 14⅝ in. Size 03633¹⁄₁₆ × 43⅛ × 15¾ in. Size 06045⅜ × 41⅜ × 15¾ in. Per installation guide 508700-01; earlier cabinet revisions differ. | Sizes 024–060 · cabinet46½ × 35¾ × 39¾ in. Base footprint: 37 × 40⅝ in. (width × depth). |
| Cooling efficiency | Meets or exceeds 14.30 SEER2 | Up to 17.50 SEER2 | Up to 19.00 SEER2 | Up to 21.10 SEER2 |
| Heating efficiency | Meets or exceeds 7.50 HSPF2 | Up to 9.60 HSPF2 | Up to 10.00 HSPF2 | Up to 10.50 HSPF2 |
| Compressor | Single-stage | Variable-capacity | Variable-capacity | Variable-capacity with refrigerant injection |
| Cabinet | Conventional outdoor cabinet | Slim / side-discharge | Slim / side-discharge | Signature outdoor cabinet |
| Refrigerant | R-454B | R-454B | R-454B | R-454B |
| Published minimum sound | Confirm exact model specification | As low as 57 dB | As low as 54 dB | As low as 58 dB |
Planning your space: Dimensions are height × width × depth in inches, for the listed model sizes. Size codes are the numeric suffix in the full Lennox model number. Cabinet measurements exclude installation clearances, pads, optional risers, piping and accessories; mounting feet may extend beyond the cabinet. Furnaces are measured upright and exclude the coil, filter cabinet and ductwork. RTB will confirm the exact equipment revision and required space before installation.
The right match makes the difference.
Published ratings depend on capacity and the exact matched indoor/outdoor equipment. RTB verifies sizing, AHRI ratings, local suitability, availability, and installation details before quoting. Prices and labor coverage are supplied in your RTB proposal. EL18KSLV regional availability must be confirmed with RTB’s distributor.