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The Honeywell Thermostat Club
After years of using the mechanical thermostat a few times a year, we decided that it was finally time to retire it to the parts bin. As is customary in this Forum, there’s at least three (3) different but solid recommendations for a digital thermostat.  We close the Honeywell TH1100DV1000/U Pro as a result of careful research and finally a coin flip.  A small upgrade that makes me grin 😀.

Re: The Honeywell Thermostat Club
Reply #1
Welcome to the club, Ed; you'll be glad you joined!
Greg & Victoria
2017 Mid-Bath  “Nocona” towing a manual 2015 Forester
Previously a 1985 TK
SKP #61264

Re: The Honeywell Thermostat Club
Reply #2
Joined the club last year! Great simple thermostat. It just drives me crazy that it is white and doesn’t match!😜
Joe B.
2008 26ft  grey/white Rear Bath
Family of 5 hitting the open road as much as we can.

Re: The Honeywell Thermostat Club
Reply #3
Maybe paint it?
2013 27’ Mid-Bath
2005 Honda CR-V

Re: The Honeywell Thermostat Club
Reply #4
Joined the club last year! Great simple thermostat. It just drives me crazy that it is white and doesn’t match!😜
Maybe paint it?
That's what I did!  I purchased the horizontal Honeywell version (TH1100DH1004) Amazon and SupplyHouse.  I took it apart and painted it with Satin Black Krylon Fusion All-In-One Paint.  I then applied rub on white lettering and then gave it a couple of coats of "Krylon Matte Finish" coating.  The surface of the thermostat has an inconsistent texture and so the black paint will look blotchy when viewed at different angles but the matte finish coating will eliminate these blotchy spots.  I used the rub on lettering on a couple of other projects: a heater switch panel and monitor panel (of course you could also use a label maker).

Kendall

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Kendall & Donna
2019 TK  "RIMRIDER"
2023 Jeep Wrangler

Re: The Honeywell Thermostat Club
Reply #5
Hey, Kendall. That is very nice. I'm likin' that rub on lettering.
jor
09 27' MB
10  Suby Forester

Re: The Honeywell Thermostat Club
Reply #6
I would have preferred a black thermostat and some day might paint this one.  However, it’s at the bottom of our Tentative List compared to the Must Do List.  The Tentative List has a higher priority than our Wish List … 😂 so it’s a strong maybe.

Re: The Honeywell Thermostat Club
Reply #7

Just to present alternatives. Dave K. and I both got this one.  Emerson 1E78-140 Non-Programmable Heat Only Thermostat for Single-Stage Systems
   It is narrow, I wanted to preserve space on the wall next to the dinette. It is labeled White Rodgers on the picture, but is made by Emerson. It uses three AA batteries. The comment about 24 v. means it will work in up to 24 volt systems. For the motorhome it works fine on the 13 volts.  Just two wire connection, red and white. The polarity doesn't matter.  I haven't replaced the batteries yet, over two years operation so far. The yellow back light comes on when a button is pushed for a few seconds. Easily visible in daylight also. (edit) enabling the back light does take a few button pushes, it is optional. Read the reviews or the included instructions. maybe a little tricky, but just need to do it once. (and maybe when changing batteries.)
   I like this one because it can be turned on and off with the slide switch at the bottom. When off it displays the temperature.  When on, it displays a little flame icon, and the set point temperature (smaller) next to the temperature display on the left. It cycles on and off in one degree, with a settling time to prevent nuisance quick cycling.  About $30 at the moment.   I guess it can be painted if desired. Mine is mounted on a white wall.  RonB

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RonB (Bostick) living in San Diego
Original owner of "Bluebelle" a '99 TKB

Re: The Honeywell Thermostat Club
Reply #8
Just to present alternatives. Dave K. and I both got this one.  Emerson 1E78-140 Non-Programmable Heat Only Thermostat for Single-Stage Systems

That’s the same one I got. Works well and the on/off switch is convenient for quickly turning off the heater as I’m headed out the door.

- John
As an Amazon Associate Lazy Daze Owners' Group earns from qualifying purchases.
Fulltimer with a 2021 MId-Bath “Babe”, 1996 Cherokee “Scout” and “Bandit” the wonder dog 🐶

Re: The Honeywell Thermostat Club
Reply #9

Looking through the reviews on that Emerson thermostat; one had a picture of corroded traces on a pcboard (pcb).
    It looks like it was placed outdoors, or in a very humid area. That corrosion is not typical. I don't think mine will act like that. A review by Richard Iwanski, (5 star) had a good picture of the backlight, and instruction on how to enable it to come on. The RV furnace is not a milivolt system. Such systems require a standing pilot to generate electricity from a thermocouple. This current and millivoltage is switched by the thermostat to turn the gas valve on and off, and the pilot light ignites the gas. In an RV heater the 12volt supply,(main house battery)  that also runs the fan and logic, does the 'heavy lifting' and the thermostat just instructs the heater unit when to turn on and off.  Many of the negative reviews seemed to be from people who had never worked on any of this type of circuitry. They understandably were further frustrated by poorly written instructions that seem to be the 'norm' anymore.
     In addition, a button press doesn't do anything but turn on the backlight. A second button press while the backlight is on does the expected operation. Even in daylight, hard to see the backlight, this holds true. If you don't hit another button during the 3-4 second window, it will give the appearance that it is ignoring your button presses.  This actually is a pretty common software method. Maybe why it is so 'tricky' to turn on the back light function.
    For the non white thermostat housing people, here is one about the right price.  ELECTECK Digital Thermostat with Large LCD Display, Non-Programmable,...
  It doesn't cool, and can't just run the fan only. But otherwise should work.     RonB

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RonB (Bostick) living in San Diego
Original owner of "Bluebelle" a '99 TKB

Re: The Honeywell Thermostat Club
Reply #10
This morning was the first time we used this new digital thermostat to take the chill off.   I was very pleased to see its accuracy, which others have mentioned.  This simple upgrade was long overdue.  😎



Re: The Honeywell Thermostat Club
Reply #13
Is it just couple of screws and joining wires?
Incredibly easy, the easiest change you will ever do on your RV.

Ordered my digital thermostat on Amazon while out on the road, took all of 10 minutes tops to swap.

If somehow you cannot figure it out or some how you got a dead unit, just reattach the old stock thermostat.
Dave

2017 TK