Photo may vary slightly — verify by part number before ordering.61P508-11 — WaterFurnace Evaporator Fin Coil 18x21
WaterFurnace has discontinued part 61P508-11.
Replaced by: 61P720-41S
Order replacement 61P720-41S — contact us →Overview
WaterFurnace 61P508-11 — Evaporator Fin Coil 18x21. An air coil (evaporator or fin coil) transfers heat between the refrigerant and the air passing over it. Also written as 61P50811.
Discontinued — replaced by 61P720-41S. WaterFurnace no longer supplies 61P508-11; the factory replacement part number is 61P720-41S. Contact us to order 61P720-41S.
Fits these WaterFurnace units: NSH018ER001CBNV24QPA, NSH018SL000NBNB24QPA, RJSH015ER201NBNV53SSA (3 models; the Fits These Units list below is complete). These are the units we've confirmed — not necessarily the only ones. Send us the model and serial number if yours isn't listed.
Genuine WaterFurnace OEM part — not an aftermarket substitute.
What is WaterFurnace 61P508-11?
It is a genuine WaterFurnace OEM air coil, listed by WaterFurnace as “Evaporator Fin Coil 18x21”. Listed specifications: Coil Size 18 x 21 in.
Which WaterFurnace units use 61P508-11?
Confirmed fits include NSH018ER001CBNV24QPA, NSH018SL000NBNB24QPA, RJSH015ER201NBNV53SSA. The Fits These Units list on this page shows all 3 confirmed models.
Is 61P508-11 still available?
Discontinued — replaced by 61P720-41S. WaterFurnace no longer supplies 61P508-11; the factory replacement part number is 61P720-41S. Contact us to order 61P720-41S.
What are the signs an air coil has failed?
A damaged coil may leak refrigerant, ice up, restrict airflow or lose capacity.
Is 61P508-11 a genuine WaterFurnace part?
Yes. 61P508-11 is WaterFurnace's own part number for this item (also written 61P50811), and this is a genuine OEM part, not an aftermarket substitute. Search or order by this number.
How do I confirm 61P508-11 fits my unit?
Match the part number on your original part, or check your unit's model against the Fits These Units list on this page. Not sure? Send us the model and serial number and we'll confirm before you order.
Fits These Units
Confirmed to fit the WaterFurnace units below — and these are not the only models this part fits. Contact us for the entire compatibility list, or if you don't see your unit, send the model and serial and we'll confirm before you buy.
- NSH018ER001CBNV24QPA
- NSH018SL000NBNB24QPA
- RJSH015ER201NBNV53SSA
Specifications
| Part Type | Air coil |
|---|---|
| Coil Size | 18 x 21 in |
| Qty per Unit | 1 |
| Condition | New — Factory OEM |
| Availability | Discontinued |
Ask the Parts Desk
Not sure this fits? Need more than what's in stock? Send the model and serial from the unit's data plate — a real person reads it and confirms before you order.
Common Questions
Is the stock number on this page real?
Yes — it's the live count from our own shelf, not an availability estimate. If it says 1, that's how many are physically here. When it hits zero, this page says so.
Is this a genuine WaterFurnace part, or aftermarket?
Genuine WaterFurnace OEM equipment sourced through WaterFurnace's authorized parts program — not an aftermarket substitute.
How do I confirm this fits my unit?
Match part number 61P508-11 to your unit's parts diagram. If unsure, send us your model and serial number and we'll verify before you order.
What's the warranty on this part?
Warranty terms vary by manufacturer. Contact us with your order number for details specific to this part.
How fast does this ship?
In-stock items ship the same business day on orders placed before 1pm ET, Monday–Friday. Standard ground delivers to most of the continental US in 2–5 business days. Ships via UPS/FedEx Ground, or truck freight for oversized items. $15 flat-rate shipping, free on US orders of $50+.
Does everything ship UPS or FedEx Ground?
Most orders ship UPS or FedEx Ground. A small number of large or heavy parts across the catalog ship by truck freight instead, and we reach out to arrange a delivery window before those orders leave the warehouse. Oversized items that ship by truck freight are also covered by free standard shipping on orders of $50 or more.
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