DP3636 – DRAIN PAN

A secondary drain pan sits underneath your indoor evaporator coil or air handler. If your primary condensate drain line ever clogs, this pan catches the overflow and routes it to a secondary drain — preventing water damage to ceilings, floors, and walls. Required by code in most attic and closet installations.

Specs: 36″ x 36″, galvanized steel, standard drain connection

Replaces: DP3636

Fits: Universal — sized for 3- to 4-ton air handlers and evaporator coils

In stock at Open To Public HVAC Parts in Dallas. We test parts at the counter before you buy. Call or text (214) 340-9421.

Specs

• TypeSecondary condensate drain pan
• Dimensions36" x 36"
• UseUnder attic equipment, above finished space
• DrainRoute the secondary line to a visible point such as a soffit or eave

Cross-reference numbers

This part replaces the following OEM and aftermarket numbers:

• DIVERSITECH
• DP3636
• PACKARD

Not sure if your number matches? Call (214) 340-9421 or bring the old part in — bench-testing is free.

What is a secondary drain pan for?

It sits under an air handler or furnace in an attic and catches condensate if the primary drain plugs. It is what stops a blocked drain line from becoming a ceiling repair. In most of Texas it is required for equipment installed above a finished space.

What size do I need?

Large enough that the whole unit sits inside it with room to spare, and it has to fit the platform. Measure the footprint of the equipment, then add clearance.

Does it need its own drain line?

Yes - a secondary line routed to somewhere visible, usually a soffit or an eave, so that water coming out of it tells you the primary drain is plugged. That drip is a warning, not a nuisance.

Should I add a float switch?

Strongly recommended. A pan switch shuts the system down before the pan overflows. It is the cheapest insurance in the whole system.

Do you stock them?

Common sizes are on the shelf at 10226 Plano Rd, Suite 104 in Dallas.