EXW Singapore — collect or forward from our Singapore office.

3G Electric
EMERSON 1F85U-42PR Standard Thermostat - Standard Thermostats
EMERSONStandard Thermostats

EMERSON 1F85U-42PR Standard Thermostat

The EMERSON Low Voltage Thermostat (MPN 1F85U-42PR) is a standard thermostat for heat and cool applications. It supports 2H/2C Conventional and 4H/2C Heat Pump stages, with a 5-1-1 programming capability and…

SKU 3G-OTH-71251

Also listed as: 1F85U42PR · 1F85U 42PR

Brand
EMERSON
Item
1F85U-42PR Standard Thermostat
Part Number
1F85U-42PR
Category
Standard Thermostats
Available to Order
Also known as:1F85U-42PREMERSON
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.
EXW Singapore
Collect or forward from our office
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support

Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

EMERSON
Manufacturer Part Number
1F85U-42PR
Type
Auto, Horizontal, Rectangle
Day
5-1-1/5-2/7
Shape
Rectangle
Stages
2H/2C Conventional, 4H/2C Heat Pump
Application
Heat and Cool
Control Type
Push Button
Changeover Type
Automatic
Mounting Direction
Horizontal
Terminal Designations
C
Humidification Control
No
Programming Capability
5-1-1
Temperature Control Range
45° to 99°F

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

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

Product Description

The EMERSON Low Voltage Thermostat (MPN 1F85U-42PR) is a standard thermostat for heat and cool applications. It supports 2H/2C Conventional and 4H/2C Heat Pump stages, with a 5-1-1 programming capability and automatic changeover. The rectangular unit has a temperature control range of 45° to 99°F and includes a C terminal designation.

Frequently Asked Questions

What is the EMERSON 1F85U-42PR thermostat used for?

The EMERSON 1F85U-42PR low voltage thermostat controls heating and cooling in residential or light commercial systems. It supports 2H/2C conventional and 4H/2C heat pump stages, with automatic changeover and 5-1-1 programming for weekly schedules.

What are the specifications of the EMERSON 1F85U-42PR thermostat?

This EMERSON thermostat has a temperature control range of 45° to 99°F, automatic changeover, and supports 2H/2C conventional or 4H/2C heat pump stages. It features 5-1-1/5-2/7 day programming, a rectangular horizontal design, and a C terminal designation.

Where to buy the EMERSON 1F85U-42PR thermostat worldwide?

3G Electric supplies the EMERSON 1F85U-42PR thermostat to customers worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver this thermostat to your facility, regardless of location.

How to install the EMERSON 1F85U-42PR thermostat?

Install the EMERSON 1F85U-42PR by first turning off power to the HVAC system. Mount the thermostat horizontally on a wall, connect wires to the C terminal and other designations per your system type (conventional or heat pump), then program the 5-1-1 schedule.

Used in

Common applications for EMERSON
Residential HVAC — Emerson 1F87U-42WF low-voltage WiFi thermostat for 7-day programmable heat and cool control
Light commercial buildings — Emerson 2E399 line-voltage mechanical thermostat for indoor single-stage heating or cooling
Industrial process control — Emerson 586-314111 DC power solenoid for high-current switching in 24 V DC systems
Remote temperature sensing — Emerson F0145 132800S1 hardwired sensor for White-Rodgers 90 Series thermostats
Thermostat replacement — Emerson 3MY21 wall cover plate for White-Rodgers 1F80 Series installations
HVAC control panels — Emerson 1RC43 line-voltage thermostat with SPST switch for capillary bulb applications
Not sure this is the right part? Photo-identify it→

EMERSON Products

3G Electric supplies EMERSON standard thermostats. 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 EMERSON

View all EMERSON parts →

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first