---
product_id: 19299902
title: "70 Series Classic, Non-Programmable, Thermostat, 1E78-140"
brand: "white-rodgers"
price: "$57.20"
currency: USD
in_stock: true
category: "White Rodgers"
url: https://www.desertcart.us/products/19299902-70-series-classic-non-programmable-thermostat-1e78-140
store_origin: US
region: United States of America
---

# Compact vertical profile 5.3x3.2x1.1 in Battery powered with included AAA batteries ±1°F precision control 70 Series Classic, Non-Programmable, Thermostat, 1E78-140

**Brand:** white-rodgers
**Price:** $57.20
**Availability:** ✅ In Stock

## Summary

> 🌟 Stay cozy, stay precise — the thermostat that means business.

## Quick Answers

- **What is this?** 70 Series Classic, Non-Programmable, Thermostat, 1E78-140 by white-rodgers
- **How much does it cost?** $57.20 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/19299902-70-series-classic-non-programmable-thermostat-1e78-140)

## Best For

- white-rodgers enthusiasts

## Why This Product

- Trusted white-rodgers brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Sleek Vertical Design:** Modern, space-saving profile fits perfectly on any wall.
- • **Reliable Battery Power:** Comes with 3 AAA batteries included for immediate, cordless operation.
- • **Crystal Clear Digital Display:** Backlit screen ensures effortless temperature reading anytime.
- • **Precision Temperature Control:** Maintain your comfort with ±1°F accuracy for consistent warmth.
- • **Seamless Single-Stage Compatibility:** Optimized for single-stage heat-only systems, hassle-free integration.

## Overview

The Emerson 1E78-140 is a non-programmable, battery-powered thermostat designed for single-stage heat-only systems. Featuring a large backlit digital display and ±1°F temperature accuracy, it offers precise manual control in a sleek, compact vertical design. Easy to install and operate, it includes 3 AAA batteries and supports 24-volt and millivolt systems, making it a reliable choice for straightforward heating control.

## Description

The Emerson 1E78-140 single stage thermostat has an easy to read digital display. This non-programmable thermostat works with most single stage heat only systems. Is for use on 24 volt and millivolt systems. *Not compatible with electric baseboard heat and some other systems.

## Features

- Easy-to-read digital display with backlight
- Non-programmable thermostat
- Compatible with single stage heat only systems
- Precision control of plus/minus 1 degree F
- Vertical profile
- Dimensions: 5-5/16"H x 3-3/16"W x 1-1/8"D
- Large easy to read digital display
- 1⁰ Accuracy

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00204WWGE |
| Additional Features | Easy to Read |
| Best Sellers Rank | #35,819 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #17 in Home Nonprogrammable Thermostats |
| Brand Name | White-Rodgers |
| Color | White |
| Connectivity Protocol | BACnet MS/TP |
| Connectivity Technology | Wired |
| Control Method | Touch |
| Control Type | Button Control |
| Controller Type | Hand Control |
| Customer Reviews | 4.5 4.5 out of 5 stars (4,472) |
| Display Type | Digital |
| Finish Types | Matte |
| Global Trade Identification Number | 00786710518348 |
| Included Components | White-Rodgers 1E78-140 Thermostat Wall Dig Heat Only |
| Item Dimensions D x W x H | 30"D x 8"W x 6"H |
| Item Type Name | White-Rodgers 1E78-140 Thermostat Wall Dig Heat Only |
| Item Weight | 1.6 ounces |
| Manufacturer | Copeland |
| Manufacturer Part Number | 1E78-140 |
| Manufacturer Warranty Description | 5 year limited. |
| Model Name | 1E78-140 |
| Model Number | 1E78-140 |
| Mounting Type | Wall Mount |
| Number of Batteries | 3 AAA batteries required. (included) |
| Power Source | Battery Powered |
| Product Style | 70 |
| Shape | Curved |
| Specific Uses For Product | Heater |
| Temperature Control Type | manual |
| UPC | 786710518348 |
| Unit Count | 1 Count |
| Voltage | 24 volts |
| Wattage | 45 |

## Product Details

- **Brand:** White-Rodgers
- **Controller Type:** Hand Control
- **Model Name:** 1E78-140
- **Product Dimensions:** 30"D x 8"W x 6"H
- **Special Feature:** Easy to Read

## Images

![70 Series Classic, Non-Programmable, Thermostat, 1E78-140 - Image 1](https://m.media-amazon.com/images/I/41sZH3hrCKL.jpg)

## Questions & Answers

**Q: Does the display light up as shown in the description? That would make it easier to read.**
A: Look at Answer 1 (Maina, answered on December 13, 2015). YES, it has a backlight! I just followed these instructions on my newly-installed thermostat, and it lights up beautifully.

**Q: I followed the instructions to turn the backlight on. it worked first day but then stopped working. so i followed instructions again. why it stopped?**
A: You probably didn't turn the 'Heat on/off' button to 'off' after setting the backlight to on.  The process is:
1. Switch bottom button to 'Heat'. Press up and down arrows at same time for 2 seconds. Display alternates with FF and L flashing.
2. Push 'Up' or 'Down' button to select FF.
3. Now, make sure you set the bottom button to 'Off' to make the backlight setting permanent.  Backlight will come on now whenever you press the up or down arrow buttons.  Goes off after a few seconds if the buttons aren't being depressed.

**Q: can i use it in an rv with a 12 (2 wire) volt system?**
A: If it’s just heat only you can use it but if you have a duct system with ac and heat you cannot use it

**Q: Will this work with a Cozy gas wall heater that uses 2 wires?**
A: From what i learned back when i did my research is a 2 wire system will work with any 2 wire thermostat. ..it worked on mine and works perfect...and saves me on my gas bill...if your still unsure i would recommend calling the manufacturer...good luck

## Frequently Bought Together

- Emerson Thermostats 1E78-140 Non-Programmable Heat Only Thermostat for Single-Stage Systems, White
- Mr. Heater F260550 Big Maxx MHU50NG Natural Gas Unit Heater,Black
- Honeywell TH1100DV1000 Pro-Digital 2-Wire Heat Only

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-30*