Exclusively Lennox / The details make the difference
Compare Lennox furnaces: Find your kind of comfortable.
Ultra-low-NOx furnace options for LA / OC projects. Furnace efficiency is measured in AFUE, not SEER2.
Furnace
Compare the model families below. Final configurations are selected for your home.
On smaller screens, swipe the table to compare all three models.
| The details | |||
|---|---|---|---|
| Unit dimensions · furnace cabinetHeight × Width × Depth · inches | 040 / 060 · A cabinet33 × 14½ × 27¾ in. 080 · B cabinet33 × 17½ × 27¾ in. 100 · C cabinet33 × 21 × 27¾ in. EL180UHNE(K), upright cabinet. | 060 · A cabinet33 × 14½ × 27¾ in. 080 · B cabinet33 × 17½ × 27¾ in. 080 / 100 · C cabinet33 × 21 × 27¾ in. SL280UHNV, upright cabinet. | 040 / 060 · B cabinet33 × 17½ × 27¾ in. 080 · C cabinet33 × 21 × 27¾ in. SL297UHNV, upright cabinet. |
| Heating efficiency | 80% AFUE | 80% AFUE | Up to 97.5% AFUE |
| Heating stages | Single-stage | Two-stage | Two-stage |
| Blower motor | Power Saver™ constant-torque | Variable-speed | Variable-speed |
| Emissions design | Ultra-low NOx | Ultra-low NOx | Ultra-low NOx |
| Manufacturer collection | Elite® Series | Dave Lennox Signature® Collection | Dave Lennox Signature® Collection |
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.
Warmth, chosen for your home.
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. These Lennox ultra-low-NOx families are designed for California emissions requirements. Exact model certification, air-district rules, fuel, installation location, and permit eligibility must be verified. Silver provisionally uses SL280NV: EL180NE is constant-torque, not variable-speed.
The Silver selection is a provisional variable-speed alternative to the requested EL180. Both Silver and Gold shown here belong to the Signature Collection. AFUE describes gas heating efficiency; it is not a cooling rating.