--- product_id: 19299902 title: "White-Rodgers 70 Series Classic, Non-Programmable, Thermostat, 1E78-140" brand: "white-rodgers" price: "AR$138027" currency: ARS in_stock: true reviews_count: 13 category: "White Rodgers" url: https://www.desertcart.com.ar/products/19299902-white-rodgers-70-series-classic-non-programmable-thermostat-1e78-140 store_origin: AR region: Argentina --- # Backlit easy-read digital display ±1°F precision control Battery powered with included AAA batteries White-Rodgers 70 Series Classic, Non-Programmable, Thermostat, 1E78-140 **Brand:** white-rodgers **Price:** AR$138027 **Availability:** ✅ In Stock ## Summary > 🔥 Stay in control, stay cozy — precision heating made simple! 🔥 ## Quick Answers - **What is this?** White-Rodgers 70 Series Classic, Non-Programmable, Thermostat, 1E78-140 by white-rodgers - **How much does it cost?** AR$138027 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/19299902-white-rodgers-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 & Space-Savvy:** Compact vertical profile fits discreetly on your wall, blending modern minimalism with practical function. - • **Effortless Readability:** Backlit digital display ensures you can check and adjust settings anytime, even in low light. - • **Plug & Play Simplicity:** Non-programmable design means zero setup hassle—just install and enjoy reliable heating control. - • **Seamless Compatibility:** Works flawlessly with most single-stage heat-only systems, powering your comfort without complexity. - • **Precision Perfect Comfort:** Maintain your ideal temperature with ±1°F accuracy—no more guessing, just pure control. ## Overview The White-Rodgers 70 Series 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 straightforward, reliable temperature control in a sleek, compact design. Ideal for professionals seeking no-fuss, precise heating management with easy installation and a 5-year limited warranty. ## 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. Review: Love this thermostat, works great and great display! - I love this heat only thermostat. It is easy to install and instructions are great. Even when the display is not illuminated the display is large and easy to read even for me with bad eyes. The display is so much better then the Honeywell rh110b that it replaces, which has a monochrome like display where the numbers are almost the same shade as the background and does not have a light. This is a perfect choice if you have just two wires, white and red used for forced hot water hydronic heat with an oil boiler. You also have to clip one of the jumpers on the circuit board that makes your boiler react correctly using hot water heat. The construction is also better then the Honeywell and easier to use. This replaces the old round Honeywell that had a twist dial and mercury switch which I used to have some years back. Update 11/14/19: I have put in to return this thermostat and get a new one. The flame Icon doesn't turn on when the thermostat calls for heat, it stays on all the time so I don't know if it's defective. I believe it comes on when you select a temp that is higher than the room temp and shows it's talking to boiler to get heat. So I am returning to see if it is defective. Update 11/18/19: I have received a replacement thermostat and installed it. The thermostat performed the same as the last one. I have found that once you turn the switch from off to heat, the flame icon stays on until you turn the thermostat off. The flame icon has nothing to do with the heater status. I sent a question to Emerson and have not got a response about the function of the flame icon. I am moving my rating to five stars as the thermostat is functioning properly and is a quality product that does exactly what it is supposed to do. I do hear a click as I raise the temperature above the room temperature, so I believe it functions just fine and keeps the temperature right at set temp. Update: I did not clip the 905 jumper as it suggests and this keeps room temp right at set temp without overshooting the set temp. It is very easy to clip the jumper if you decide to. Review: What a great thermostat for an RV - This product changed my mind about digital thermostats. I always liked bimetal spring based thermostats before trying this one. After all, those are passive, no batteries required, and they work on physics principles. What could go wrong? The answer is plenty! The one in my RV had sticky contacts. What I mean is the electrical contacts seemed to stick together. That resulted in a terrible problem, which the digital thermostat has solved completely. The problem was the temperature would have to drop way below the setpoint to get the furnace to turn on. Then, when on, the temperature would have to rise way above the setpoint before the furnace would turn off. This was awful. In a small RV there was no consistency in the temperature at all. It would swing widely above and below the desired setting. Plus the temperature control only had two options, ie warmer or cooler -- no actual temperature selection. This digital thermostat is absolutely one of the best upgrades I have ever done to my RV. I can select whatever temperature I want and the thermostat will control the furnace precisely. The variance is only plus or minus about 1 degree. I am thrilled with this precise control. This is saving propane, which saves me money. Plus, I love the backlight. Now I can see the temperature and the setpoint even in the middle of the night. This digital thermostat runs on two AAA batteries. I put Energizer Ultimate Lithiums in it. Those should last 2-5 years before needing replacement, they never corrode, and they are imperviousness to temperature variations. This inexpensive digital thermostat is an excellent upgrade for an RV and it has changed my opinion of digital thermostats in general. I strongly recommend this, especially if you have an old analogue thermostat in your RV. ## 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 | #15,174 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #11 in Home Nonprogrammable Thermostats | | Brand | White-Rodgers | | 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 out of 5 stars 4,472 Reviews | | 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 | 4.4"D x 1.8"W x 6.3"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) | | Number of Items | 1 | | Power Source | Battery Powered | | Product Dimensions | 4.4"D x 1.8"W x 6.3"H | | Product Style | 70 | | Shape | Curved | | Special Feature | Easy to Read | | 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:** 4.4"D x 1.8"W x 6.3"H - **Special Feature:** Easy to Read ## Images ![White-Rodgers 70 Series Classic, Non-Programmable, Thermostat, 1E78-140 - Image 1](https://m.media-amazon.com/images/I/41sZH3hrCKL.jpg) ![White-Rodgers 70 Series Classic, Non-Programmable, Thermostat, 1E78-140 - Image 2](https://m.media-amazon.com/images/I/41iIdQVGTHL.jpg) ![White-Rodgers 70 Series Classic, Non-Programmable, Thermostat, 1E78-140 - Image 3](https://m.media-amazon.com/images/I/41kBsVGOU0L.jpg) ![White-Rodgers 70 Series Classic, Non-Programmable, Thermostat, 1E78-140 - Image 4](https://m.media-amazon.com/images/I/41+Fz+ian9L.jpg) ![White-Rodgers 70 Series Classic, Non-Programmable, Thermostat, 1E78-140 - Image 5](https://m.media-amazon.com/images/I/51-ERe3+ELL.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 ## Customer Reviews ### ⭐⭐⭐⭐⭐ Love this thermostat, works great and great display! *by S***D on November 13, 2019* I love this heat only thermostat. It is easy to install and instructions are great. Even when the display is not illuminated the display is large and easy to read even for me with bad eyes. The display is so much better then the Honeywell rh110b that it replaces, which has a monochrome like display where the numbers are almost the same shade as the background and does not have a light. This is a perfect choice if you have just two wires, white and red used for forced hot water hydronic heat with an oil boiler. You also have to clip one of the jumpers on the circuit board that makes your boiler react correctly using hot water heat. The construction is also better then the Honeywell and easier to use. This replaces the old round Honeywell that had a twist dial and mercury switch which I used to have some years back. Update 11/14/19: I have put in to return this thermostat and get a new one. The flame Icon doesn't turn on when the thermostat calls for heat, it stays on all the time so I don't know if it's defective. I believe it comes on when you select a temp that is higher than the room temp and shows it's talking to boiler to get heat. So I am returning to see if it is defective. Update 11/18/19: I have received a replacement thermostat and installed it. The thermostat performed the same as the last one. I have found that once you turn the switch from off to heat, the flame icon stays on until you turn the thermostat off. The flame icon has nothing to do with the heater status. I sent a question to Emerson and have not got a response about the function of the flame icon. I am moving my rating to five stars as the thermostat is functioning properly and is a quality product that does exactly what it is supposed to do. I do hear a click as I raise the temperature above the room temperature, so I believe it functions just fine and keeps the temperature right at set temp. Update: I did not clip the 905 jumper as it suggests and this keeps room temp right at set temp without overshooting the set temp. It is very easy to clip the jumper if you decide to. ### ⭐⭐⭐⭐⭐ What a great thermostat for an RV *by D***G on November 29, 2023* This product changed my mind about digital thermostats. I always liked bimetal spring based thermostats before trying this one. After all, those are passive, no batteries required, and they work on physics principles. What could go wrong? The answer is plenty! The one in my RV had sticky contacts. What I mean is the electrical contacts seemed to stick together. That resulted in a terrible problem, which the digital thermostat has solved completely. The problem was the temperature would have to drop way below the setpoint to get the furnace to turn on. Then, when on, the temperature would have to rise way above the setpoint before the furnace would turn off. This was awful. In a small RV there was no consistency in the temperature at all. It would swing widely above and below the desired setting. Plus the temperature control only had two options, ie warmer or cooler -- no actual temperature selection. This digital thermostat is absolutely one of the best upgrades I have ever done to my RV. I can select whatever temperature I want and the thermostat will control the furnace precisely. The variance is only plus or minus about 1 degree. I am thrilled with this precise control. This is saving propane, which saves me money. Plus, I love the backlight. Now I can see the temperature and the setpoint even in the middle of the night. This digital thermostat runs on two AAA batteries. I put Energizer Ultimate Lithiums in it. Those should last 2-5 years before needing replacement, they never corrode, and they are imperviousness to temperature variations. This inexpensive digital thermostat is an excellent upgrade for an RV and it has changed my opinion of digital thermostats in general. I strongly recommend this, especially if you have an old analogue thermostat in your RV. ### ⭐⭐⭐⭐⭐ Easy install, easy to use, truck camper upgrade. *by T***R on March 20, 2026* Quick upgrade for Travel Lite truck camper thermostat. Original was VERY difficult to switch on or off. This replacement has three simple buttons - On/Off, and Up and Down to set your desired temperature. An added feature that I really love, is that the digital screen I am sorry shows you the temperature inside, before you ever turn on the furnace. The unit itself has two AA batteries so the digital screen is self powered and does not drain your house battery. (A similar digital temp gauge I have runs years on two batteries.) Once you turn the furnace on, the screen will show you your set temperature and the current inside temperature. Do yourself a favor - skip those replacement thermostats with lever switches and get this digital Emerson. Install took five minutes and a phillips head screwdriver, just two wires. ## 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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.ar/products/19299902-white-rodgers-70-series-classic-non-programmable-thermostat-1e78-140](https://www.desertcart.com.ar/products/19299902-white-rodgers-70-series-classic-non-programmable-thermostat-1e78-140) --- *Product available on Desertcart Argentina* *Store origin: AR* *Last updated: 2026-10-14*