Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
HONEYWELL HOME L4006A1959 Single Function Immersion Controller
HONEYWELL HOMESingle Function

HONEYWELL HOME L4006A1959 Single Function Immersion Controller

The Honeywell Home L4006A1959 is a single-function immersion controller designed for high-limit applications. It features a fixed 2°F differential temperature, vertical mounting orientation, and includes an…

SKU 3G-OTH-69832

Brand
HONEYWELL HOME
Item
L4006A1959 Single Function Immersion Controller
Part Number
L4006A1959
Category
Single Function
Available to Order
Also known as:L4006A1959HONEYWELL HOME
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

HONEYWELL HOME
Manufacturer Part Number
L4006A1959
Type
40°F Min, Horizontal/Vertical
Max
180°F
Switch
1
Application
High Limit
Mounting Orientation
Vertical
Differential Temperature
2°F Fixed
Auto/Manual Switch Included
Yes

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

HONEYWELL HOME Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Honeywell Home L4006A1959 is a single-function immersion controller designed for high-limit applications. It features a fixed 2°F differential temperature, vertical mounting orientation, and includes an auto/manual switch. This controller operates within a 40°F to 180°F range and is configured for horizontal or vertical installation with one switch.

Frequently Asked Questions

What is the Honeywell Home L4006A1959 immersion controller used for?

The Honeywell Home L4006A1959 is a single-function immersion controller used for high-limit applications in hydronic heating systems. It monitors water temperature and shuts down the burner if the temperature exceeds the 180°F maximum setpoint, preventing overheating and system damage.

What are the specifications of the Honeywell Home L4006A1959?

The Honeywell Home L4006A1959 has a 40°F minimum and 180°F maximum temperature range, a fixed 2°F differential, and vertical mounting orientation. It includes one switch and an auto/manual switch. The controller is designed for horizontal or vertical installation and is rated for high-limit applications.

Where to buy the Honeywell Home L4006A1959 worldwide?

3G Electric supplies the Honeywell Home L4006A1959 immersion controller to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this high-limit controller.

How to install the Honeywell Home L4006A1959 immersion controller?

Install the Honeywell Home L4006A1959 vertically in a well or immersion socket in the hydronic system piping. Ensure the sensing bulb is fully immersed in the fluid. Wire the controller per the wiring diagram, connecting the auto/manual switch as needed. Always follow local codes and the manufacturer's instructions.

Used in

Common applications for HONEYWELL HOME
Residential HVAC — Honeywell Home TH115-A-120S/U thermostat for 7-day programmable temperature control in homes.
Light commercial buildings — Honeywell Home TL8230A1003 line-voltage thermostat for electric heating systems in offices.
Hydronic heating systems — Honeywell Home L4006E1117 immersion controller for high-limit temperature regulation in boilers.
Indoor air quality monitoring — Honeywell Home C7263A1008 air quality sensor for gas analysis in commercial facilities.
Furnace control — Honeywell Home ST9120U1011 timer controller for circulating fan timing in integrated furnace systems.
HVAC switching — Honeywell Home RA889A1001 switching relay for 24V AC control of zone valves or dampers.
Not sure this is the right part? Photo-identify it

HONEYWELL HOME Products

3G Electric supplies HONEYWELL HOME single function. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

More from HONEYWELL HOME

View all HONEYWELL HOME parts

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first