Genuine Resideo | Honeywell Home L4064B2236/U | Adjustable Fan & High Limit Control | Manual Fan Switch
The Resideo Honeywell Home L4064B2236 is a combination fan and high-temperature limit controller designed for forced warm-air heating systems.
This control automatically operates the furnace blower according to plenum temperature while providing independent high-temperature limit protection.
The 8-inch helical bimetal sensing element, adjustable temperature settings, and manual fan switch make it suitable for servicing and replacing compatible furnace fan and limit controls.
Genuine Resideo / Honeywell Home combination fan and limit controller
Manufacturer Part Number: L4064B2236
Also identified as L4064B2236/U
Dual-function fan operation and high-temperature limit protection
8-inch insertion sensing element
3/4-inch sensing element diameter
Adjustable fan differential
Adjustable high-temperature limit from 100°F to 250°F
Built-in manual fan switch for continuous blower operation
Automatic fan control based on furnace plenum temperature
High-limit switch opens when temperature rises above the selected setting
Helical bimetal temperature sensing element
Multiple wiring terminal connection options
Suitable for compatible forced-air furnace systems
| Specification | Details |
|---|---|
| Brand | Resideo / Honeywell Home |
| Model | L4064B2236 |
| Manufacturer Part Number | L4064B2236/U |
| Product Type | Combination Fan and Limit Control |
| Application | Forced Warm-Air Heating Systems |
| Sensor Insertion Length | 8 in (203 mm) |
| Sensor Diameter | 3/4 in |
| Sensing Element | Helical Bimetal |
| High Limit Setting Range | 100°F–250°F |
| High Limit Differential | 25°F |
| Fan Control | Adjustable |
| Manual Fan Switch | Yes |
| Fan Switching Action | SPST, Normally Open |
| Limit Switching Action | SPST, Normally Closed |
| Fan Contact Rating | 14A at 120VAC / 7A at 240VAC |
| Limit Contact Rating | 8A at 120VAC / 4A at 240VAC |
| Product Height | 4.28 in |
| Product Width | 3.00 in |
| Product Depth | 1.59 in, excluding sensor |
| Housing Finish | Zinc-Plated Steel |
| Country of Origin | Mexico |
The following Honeywell / Resideo control numbers are identified in manufacturer cross-reference documentation as replacement applications for L4064B2236:
Honeywell / Resideo L4064A Series:
L4064A1347, L4064A1511, L4064A1719, L4064A1735, L4064A2030, L4064A2279, L4064A2774, L4064A2998
Honeywell / Resideo L4064B Series:
L4064B1618, L4064B2608, L4064B2772, L4064B2822, L4064B2905, L4064B2962, L4064B3051, L4064B3085, L4064B3325, L4064B3333, L4064B3341, L4064B3366, L4064B3457, L4064B3499, L4064B3572
Honeywell / Resideo L4064E, F and L Series:
L4064E1777, L4064E2163, L4064E2171, L4064E2452, L4064E2502, L4064E2684, L4064F1023, L4064F1031, L4064F1080, L4064F1098, L4064L1004
These cross-references are based on manufacturer application guides. Installation requirements, mounting configuration, wiring, and furnace specifications must be verified for the specific application.
Residential forced-air heating systems
Commercial forced-air furnaces
Furnace blower temperature control
High-temperature safety limit control
HVAC heating system maintenance
Replacement of compatible Honeywell fan and limit controllers
WARNING: This product can expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
The original packaging may show signs of shelf wear due to long-term warehouse storage.