Lennox Condensate Pumps & Supplies

Lennox condensate pumps and supplies are OEM replacement and accessory components for managing condensate drainage in Lennox high-efficiency furnaces, air handlers, and heat pumps. The Lennox condensate supplies category covers condensate drain traps, trap assemblies, condensate collars, drain hose kits, condensate pump assemblies, and drain pan replacements. The Lennox condensate drain trap (part 61M35) is a commonly stocked service part for Lennox high-efficiency gas furnaces and air handlers. The Lennox X7234 is an OEM condensate pump with a 22-foot lift rating at 120V for installations where gravity drainage is not possible. For HVAC technicians servicing Lennox condensing equipment, using OEM Lennox condensate components ensures proper drain geometry and connection compatibility with the specific equipment model.

Lennox Condensate Drain Traps

Lennox condensate drain traps are OEM trap assemblies that maintain a water seal in the condensate drain line, preventing flue gases from being drawn back through the drain path on negative-pressure condensing furnaces and air handlers. The Lennox condensate drain trap (part 61M35) is a primary service part for Lennox condensing gas furnaces. The condensate trap assembly (part 39W98) is also available as a complete replacement assembly. Drain traps are a scheduled maintenance item on condensing equipment; a cracked, clogged, or failed trap can allow flue gas backflow or drain blockage leading to equipment lockout.

Condensate Trap Replacement Parts and Kits

Lennox condensate trap replacement kits and parts include the 605099-07 Drain Trap Bag Assembly (part 95W17), the condensate trap replacement (part 29K14), and the condensate drain trap kit (part 77W30). These kits address specific Lennox furnace and air handler models where the trap geometry, connection size, or drain trap bag design is model-specific. Selecting the correct trap kit requires the Lennox equipment model number, as trap configurations differ between furnace families and installation orientations.

Condensate Collars

Lennox condensate collars are OEM fittings that connect the condensate drain outlet of the furnace or air handler cabinet to the drain trap and drain line. The condensate collar (part 81M42) and condensate collar for downflow applications (part 81M43) are OEM Lennox parts. The downflow version (81M43) is specific to downflow furnace orientations where the drain outlet is positioned differently than in upflow or horizontal configurations. Condensate collars are typically replaced when they become cracked or when resealing the drain connection is necessary during annual maintenance.

Lennox Condensate Pumps

The Lennox X7234 is an OEM condensate pump with a 22-foot lift rating operating at 120V, designed for Lennox equipment installations where gravity drainage to a floor drain or condensate line is not feasible. Condensate pumps are specified when the furnace or air handler is installed in a location where the condensate cannot be routed downward to a drain. OEM Lennox condensate pump replacements maintain the correct electrical connections and mounting compatibility for the specific equipment model.

How to Choose Lennox Condensate Pumps and Supplies

The Lennox equipment model number is the starting point for all condensate supply selections. Lennox drain trap geometry, collar sizing, and trap bag configurations are model-specific. A drain trap designed for an upflow furnace may not fit a horizontal or downflow application. Using the equipment model number to look up the correct OEM part number prevents installation mismatches.

Gravity drain vs. pump is the first application decision for condensate removal. If the equipment is installed above a floor drain with a downward drain path, a trap assembly and collar are sufficient. If gravity drainage is not possible due to the installation location, the Lennox X7234 condensate pump or equivalent provides the required lift to route condensate to a suitable drain point.

Trap replacement frequency on condensing equipment: condensate drain traps on high-efficiency furnaces and air handlers should be inspected annually and replaced if cracked, discolored, or showing signs of seal degradation. A failed trap on a negative-pressure furnace allows flue gas recirculation, which can trigger safety lockouts or carbon monoxide concerns. Stocking the correct OEM trap part number for common Lennox equipment reduces call-back time.

For anyone asking why Lennox condensate trap kits are model-specific: Lennox furnaces in upflow, downflow, and horizontal orientations position the condensate outlet differently and require different drain trap geometries to maintain the proper water seal depth. Using a generic trap or the wrong orientation-specific trap can result in insufficient seal depth, drain blockage, or improper connection to the equipment drain port.

FAQs

What is the Lennox condensate drain trap part number for high-efficiency furnaces?
The Lennox condensate drain trap part number 61M35 is a commonly stocked OEM drain trap for Lennox high-efficiency gas furnaces and air handlers. Additional drain trap options include the condensate trap assembly (part 39W98) and the 605099-07 Drain Trap Bag Assembly (part 95W17) for model-specific trap configurations. The correct part number is confirmed by the Lennox equipment model number.

What is the lift rating of the Lennox X7234 condensate pump?
The Lennox X7234 OEM condensate pump has a 22-foot lift rating and operates at 120V, per SupplyHouse product listing. It is used in Lennox equipment installations where gravity drainage is not feasible. The 22-foot lift capacity covers most residential attic, utility closet, and crawl space installations where the condensate must be pumped up to a drain point.

What is the difference between the Lennox condensate collar 81M42 and 81M43?
The Lennox condensate collar 81M42 is a standard upflow/horizontal configuration OEM collar, while the 81M43 is specifically for downflow furnace orientations. The downflow version accommodates the different drain outlet position in a downflow-installed furnace. Using the wrong collar orientation can result in a poor drain connection or condensate leakage at the trap inlet.

Why are Lennox condensate trap kits model-specific?
Lennox condensate trap kits are model-specific because furnace orientation (upflow, downflow, horizontal) and equipment generation determine the trap geometry, connection size, and drain bag design required to maintain the correct condensate water seal. A trap designed for one orientation may not create the required seal depth in another, and the connection dimensions may not match across Lennox furnace families. The equipment model number from the rating label is the definitive reference for the correct trap kit.

How often should Lennox condensate drain traps be replaced?
Lennox condensate drain traps on high-efficiency furnaces and air handlers should be inspected annually during routine maintenance and replaced if cracked, discolored, clogged, or showing seal degradation. A failed condensate trap on a negative-pressure condensing furnace can allow flue gas to be drawn back through the drain path, potentially triggering safety lockout or contributing to carbon monoxide concerns. Lennox service documentation recommends trap inspection as part of annual furnace maintenance.