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Emerson 1E78-140 Non-Programmable Heat Only Thermostat for Single-Stage Systems
|Price:||$23.50 & FREE Shipping on orders over $25. Details|
|You Save:||$3.20 (12%)|
|EAN||6623545231360 , 6593856621603 , 0696731718071 , 0786710518348|
|Number of Items||1|
|UPC||786710518348 , 696731718071|
Specification for this product family (See all products)
|Item Weight||3 pounds|
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The White-Rodgers 1E78-140 single stage thermostat has an easy to read digital display. The 1E78-140 thermostat is a non-programmable thermostat. The 1E78-140 is a heat only thermostat that will work on most single stage heating systems. For use on 24 volt and millivolt systems.
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Top Customer Reviews
That's dated, this one does not rely on mercury to operate. Now I'll just have to safely dispose of the hazardous waste.
This is also the only one I could find that would work for our setup (3 baseboard fan heaters connected to a relay then connected to this on/off style thermostat.) Really wanted a programmable one but again this is the only one that works with what we have. As others have noted, once it hits a degree over the set temp it shuts off the heaters. And it runs more often for shorter periods to keep the temp closer to the set temp, which is much better than the mercury one getting 5 degrees or so colder before turning on.
Anyway, very happy, can set it in the dark now with the backlight and it's easier to read and turn off when we head out.
Also, here's the pdf - [...]
for anybody else who prefers a digital manual. It's more accurate than the one I got in the box which
referred to 3 different thermostats in the one manual. Searching for backlight in the manual lists steps for turning it on.
Not sure why it isn't configured this way from the factory.
The indoor thermometer readout is accurate and the thermostat, once set, is perfectly calibrated so the heat rises to where you set it and no further (nor does it stop short of the required temperature). This is saying a lot in my very drafty, uninsulated century-old house with century old windows -- I've never had a t-stat work so well.
When I raise the heat, the furnace fires up faster. The little circuit board inside is very solidly made ( the LCD doesn't have a backlight as shown in the photo, but the LCD is large and the readout was clear enough that I could easily see it without glasses.
The plastic housing matches up precisely. Taking it apart and putting it back together again is very easy -- you don't feel you are forcing anything. It would be hard to crack it by accident.
This is NOT the case with Honeywells. They've been garbage for years but I kept buying them over and over, presuming that if Honeywells were garbage lesser-known brands would be worse. This item was a replacement for a Honeywell thermostat I just purchased that didn't work out of box. That Honeywell was to replace a much more expensive programmable Honeywell that only worked when it felt like it, and never well. Also, the Honeywell my neighbor bought had the battery poles reversed. She spent a long time thinking she'd installed it wrong before we figured it out.
Emerson 1E78 Negatives:
1) There's no backplate, so if you painted around the backplate of your old thermostat. hang onto the backplate or you'll have to touch up the paint (I've got bigger cosmetic issues in a 100-year-old house that was never updated).
2) You're going to think the instructions in the box are the wrong ones, because they're for a top of the line electronic programmable model. But when you read them, it says if you bought a simpler model, just ignore all the extra buttons and circuits in the diagrams. I found this most annoying. Not that you really need instructions when there are only two wires to connect. But:
3) They also use the same circuit board for all models, which means there are way more contacts for your wires than you need -- eight, I think, when two, a red and a white, would suffice. They're clearly marked but while the one for the white is a simple 'W', there are two for the red, RH and RC. I don't have central air conditioning so I didn't realize at first that H was for heat and C was for cooling.
Nevertheless, figuring out the instructions and which contacts to use didn't take long -- installation took less than ten minutes. Whereas installing the defective Honeywell thermostat with its ill fitting plastic cover and screw holes that didn't line up took me a half hour.
NOW I BRING YOU NEWS ON THE LATEST NEW AMAZON POLICY THAT IS GOING TO DRIVE YOU COMPLETELY CRAZY
You know how they ask you why you don't want the item when you initiate a return? And you know how one of the choices is that the item did not work or was defective?
Don't ever say it's defective. If you do, Amazon automatically initiates a replacement order for you -- even though they still ask, as per usual, whether you prefer that your charge be reversed or would rather have a gift card credit.
So. Having chosen to be reimbursed and purchased my brand new Emerson thermostat, I look in my email and find this smug,self-satisfied note from Amazon saying they ordered a replacement Honeywell for me and it is on its way. Like they're giving me the Rolls Royce treatment.
Why, you might ask, would Amazon do something this stupid? Why wouldn't they?
Consider which is more profitable: give you back the whole of what you paid, or send a duplicate piece of crap and keep the 50% markup?
True, Amazon might lose a few dollars from a customer set on buying a more expensive item to replace it. No doubt it happens often enough.
But it doesn't happen as often as they lose the order entirely because the customer buys somewhere else (they need it now, so they go to a brick & mortar) or, it was a discretionary item so they don't really need it at all (at least, not in a hurry).
More time wasted with Amazon customer service straightening out an order. A regular occurrence at this point.
I feel badly for them. They're always nice, but there's absolutely nothing they can say when customers air complaints about any of the barrage of frequent and undisclosed policy changes Amazon imposes on us.
My rep said 'I'm sorry' or 'I apologize' at the end of every sentence, no matter how many times I told her she wasn't at fault.
The problem I had with the instruction was the part that read, "Clip jumper W904 for Celsius Display." Well, the jumper was already in place at that position. So, I was confused. By "Clip" did the instructions mean the dictionary definition of "Any of various devices for gripping or holding things together; a clasp or fastener," or "To fasten with or as if with a clip; hold tightly," or did it mean "cut."
Since it was described as a "jumper" I thought the connotation was "clasp," because my experience with jumpers inside a computer is that they can be moved to various positions. So, I grabbed the jumper and pulled it out. If that made the display Celsius, then I'd just "clip" the jumper back in place. When the display read in Celsius I put the jumper back in place, but to no effect. Apparently, the jumper is soldered in place. Why it came out so easy I don't know. I only know that I can't get back to the Fahrenheit display. Obviously, in hindsight, the instructions use of the word "clip" means "cut."
There would have been no misunderstanding if the instructions instead had stated, "Cut the wire at W904 for Celsius Display."