Name: Supco SHL520 Plenum Thermostat L100-20
Brand: Supco
SKU: SHL520
Price: 24.51 USD
Availability: InStock

Supco SHL520 Plenum Thermostat L100-20

Description

Product Summary

The Supco SHL520 Plenum Thermostat L100-20 is a professional-grade replacement part from Supco (Sealed Unit Parts Co.), a trusted name in HVAC/R and appliance parts since 1945. The SHL series of 1/2" bimetal temperature controls offers proven reliability in a compact, versatile, cost-effective design.

Limit switches and temperature controls (snap-disc thermostats) protect furnaces, air handlers, and appliances from overheating and control fans and heaters by temperature. This group includes automatic and manual-reset limits, rollout switches, thermal cutoffs, fan controls, plenum limits, and defrost terminators. Always replace with the same open/close temperature ratings and mounting style.

Key Features

36T Electrical Ratings
CSA approved
Direct OEM replacements
Economical
See Downloads section for electrical ratings (Application sheet 001)
UL® recognized
WARNING: Prop 65 info

Specifications

Brand	Supco
Part Number	SHL520
Part Type	Limit Switch / Temperature Control
Open (°F)	100°F
Close ( °F)	80 °F
Board Width	1.88"
Board Height	2.80"
Insertion Length	7"
Resistive Amps @120V	15A
Resistive Amps @240V	10A

Cross Reference

The Supco SHL520 is a direct replacement for the following OEM and competitor part numbers. Always verify ratings and fit against the original part before installing.

Replaces Part #	Manufacturer	Description
025-29041-002	York®
47-21711-01	Lennox®
PHL520	Diversitech®

White Paper

What's Included

(1) Supco SHL520 Plenum Thermostat L100-20

Safety: Always disconnect power and follow lockout/tagout procedures before servicing electrical components. Installation should be performed by a qualified technician.

Extra Information

Find your comfort-ready size with confidence

Get a fast, learning-friendly estimate for tons and BTUs, then review it with a Pro to dial in the perfect fit for your home.

Quick sizing snapshot

Enter your home size and a few basics to see a quick HVAC365 sizing snapshot you can review with a Professional.

Home size (sq ft)

Enter at least 100 sq ft.

Use conditioned square footage only; skip garages and unfinished basements.

Climate

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Home type

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Shared walls and insulation levels change the load—pick what matches your structure.

System type

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Match the system to your ductwork, fuel, or preferred heat source for best comfort.

This is a sizing estimate for general guidance only. Always confirm final size, duct design, and fuel type with a Professional before purchasing equipment or pulling permits.

Brand:

Supco

Weight:

1.00 LBS

Safety Information:

⚠ WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Prop 65 Warning:

Yes

Part Type:

Limit Switch / Temperature Control

Open (°F):

100°F

Close ( °F):

80 °F

Board Width:

1.88"

Board Height:

2.80"

Insertion Length:

Resistive Amps @120V:

15A

Resistive Amps @240V:

10A

Replaces:

025-29041-002, 47-21711-01, PHL520

Please Note: To validate the manufacturer's warranty, equipment must be installed by a qualified licensed professional in accordance with local codes and the manufacturer's installation requirements.