This page is aLennox heat pumpmenu child. Start fromall Lennox equipmentfor the full brand tree; land here when the outdoor box must heat and cool.

Sibling rooms:

• Lennox air conditioners— cooling-only condensers
• Lennox furnaces— gas heat / dual-fuel half
• Lennox air handlers— indoor blower match
• Lennox evaporator coils— coil match for furnace paths

Arrived via the Lennox menu? Stay here to filter heat pumps; jump a sibling for cooling-only or a different indoor.

Filter this aisle the same way Lennox names the tiers — using families we actually list.

• Merit Series(ML14…, ACTIVE): standard-efficiency, single-stage outdoor units for value replacements. Start with theMerit ML14KP1 36k example.
• Elite Series(ACTIVE):Elite EL16KP1 36k examplesingle-stage;Elite EL19KPV 36k exampleand EL18KSLVvariable-speedpaths;Elite EL21KLV 36k examplefor the cold-climate Elite route we currently list.
• Signature CollectionSL22KLV appears in our export as UNLISTED samples only. Ask before you plan a cart path around Signature on this grid — it is not currently shoppable there.

Open the PDP for published efficiency tags, then filter by BTU and model family. Stuck between two SKUs?

Rated comfort and efficiency follow the outdoor + indoor match — not the outdoor nameplate alone. Plan a matchedLennox air handleror aLennox furnaceplusLennox evaporator coilplus the controls that path requires.

Cooling-only shoppers can compareLennox air conditioners. We confirm compatible combinations before you buy — no invented AHRI pairs. Conventional refrigerant equipment expectsprofessional installationand proper startup.

This aisle spans about 9,000–60,000 BTU — roughly three-quarter-ton through five-ton outdoor sizes depending on the SKU. Catalog fact, not a square-footage stamp.

SEER2is cooling efficiency under the current federal test method.HSPF2is heating efficiency — check the PDP and AHRI match, not outdoor marketing alone. Catalog SEER2 tags run about 14.7–26.7.

Correct size still comes from aManual J(or equivalent) load calculation. No site sq ft calculator or starting bands on this page. We can help set a BTU target, then you filter the grid.

Cold climate:On our ACTIVE list, EL21KLV is the Elite variable-capacity path we currently sell for harder winters; SL22KLV Signature samples are UNLISTED — ask for availability. Low-temperature capacity depends on tonnage and indoor match; bring design temps when you shortlist rather than assuming a brochure °F number.

Dual fuel:Pair a compatible heat pump with a gasLennox furnaceand matched coil/controls so the system can favor heat-pump or gas heat based on conditions. Full equipment + controls design, not a checkbox. We confirm switchover logic before you buy.

Filter this aisle when you know your BTU and series target. We confirm outdoor + indoor matchups before you buy. You complete the purchase online once the SKUs are locked.

Manufacturer limited warranties vary by series and usually expect proper installation plus registration when the OEM requires it. Internet purchases can carry authorized-channel caveats; we walk that path before checkout. Keep paperwork.

Plan the full job, not just the outdoor unit:

• Outdoor heat pump from this aisle
• Indoorair handlerorfurnace+evaporator coil(AHRI-matched)
• Thermostat / communicating controls required by that path
• Line set, electrical disconnect and whip, outdoor pad/placement, and condensate — scoped by your installing contractor
• Permits and startup / commissioning per local code

We confirm the match before you buy, then you purchase online. A licensed pro installs unless we later publish install service — no invented coverage maps.

Merit Series is our value / single-stage entry on this grid (ML14…). Elite Series steps up staging and variable-speed options (EL16 / EL18KSLV / EL19KPV / EL21KLV). Signature Collection (SL22KLV) shows as UNLISTED samples in our export — ask before you assume it is for sale here.

Parent hub:all Lennox equipment. Siblings:Lennox air conditionersLennox furnacesLennox air handlersandLennox evaporator coils.

EL21KLV is listed ACTIVE with OEM cold-climate positioning. SL22KLV Signature units appear as UNLISTED — ask us for current availability before assuming they are for sale on this grid.

Yes, when the outdoor unit, furnace, coil, and controls are designed as a compatible set. We match those pieces before purchase.