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LineVoltPro Digital, Programmable, Electric Heat Thermostat, TL8230A1003

SKU:
TL8230A1003
Rating:
(341)
Q&A:
(45)
LineVoltPro Digital, Programmable, Electric Heat Thermostat, TL8230A1003
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$93.70 each
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Product Highlights

Product Highlight: Programmability
Programmable, 7 Day
Product Highlight: Voltage
208V, Line voltage, 240v
Product Highlight: Stages
1 Heat
Product Highlight: Mount
Vertical
Product Highlight: Power Method
Hardwired
Product Highlight: Temperature Range (F)
40°F - 86°F

Description

Honeywell LineVoltPro Digital 7-Day Programmable Electric Heat Thermostat, TL8230A1003

The Honeywell TL8230A1003 LineVoltPro 8000 thermostat delivers precision temperature control for 208V and 240V electric baseboard heaters, radiant ceiling heat, convectors, and fan-forced heaters. This programmable line voltage thermostat features 7-day scheduling that helps reduce annual heating costs by up to 10 percent when used as directed. Designed for residential and light commercial electric heating applications, it combines electronic accuracy within plus or minus 1 degree Fahrenheit with a user-friendly digital interface. The double-pole (DPST) design provides safe, complete circuit isolation for line voltage electric heating systems.


Key Features & Benefits
  • 7-Day Programming: Set unique temperature schedules for each day of the week with four programmable time periods daily, allowing you to heat only when and where you need it for maximum energy savings.
  • Electronic Temperature Control: Maintains accuracy within plus or minus 1 degree Fahrenheit, eliminating the temperature swings common with mechanical thermostats and keeping your space consistently comfortable.
  • On-Demand Backlight Display: Large, clear digital screen lights up when you press a button, making it easy to read in any lighting condition from dim hallways to bright rooms.
  • Early Start Function: Calculates when to activate heating so your programmed temperature is reached exactly when scheduled, ensuring comfort the moment you need it.
  • Soundproofed Operation: Reduces the clicking noise commonly heard with conventional line voltage thermostats, providing quieter operation in bedrooms and living spaces.
  • Heating Indicator Light: At-a-glance confirmation shows when the heating system is actively running, so you always know your system status.
  • On/Off Switch: Built-in switch lets you turn the thermostat completely off at the end of the heating season, preventing accidental activation during warmer months.
  • Double Pole Design: DPST switch configuration breaks both hot legs of 208V or 240V circuits for complete electrical isolation and enhanced safety.

Compatibility & Requirements

The TL8230A1003 is designed for line voltage electric heating systems operating at 208V or 240V AC, 50/60 Hz. It controls resistive-rated electric baseboard heaters, radiant ceiling heating panels, convectors, and fan-forced heaters. The thermostat is rated for 15 amps at 208V (3120 watts) or 15 amps at 240V (3600 watts). It requires hardwired installation and mounts vertically on a standard electrical box. The unit uses 5.5-inch tinned copper leadwires for connection and does not require batteries.


Installation & Care

The thermostat mounts vertically in a standard electrical box using the included hardware. Installation requires connecting the line voltage power supply wires to the line terminals and the heating load wires to the load terminals, following the double-pole wiring configuration shown in the installation instructions. The unit measures 4 7/8 inches high by 2 3/4 inches wide by 7/8 inch deep. Consult the installation manual for detailed wiring diagrams and safety precautions before beginning installation.


Specifications
  • Voltage: 208V or 240V AC, line voltage
  • Frequency: 50 Hz or 60 Hz
  • Amperage: 15 amps at 208V, 15 amps at 240V
  • Wattage: 3120W at 208V, 3600W at 240V
  • Temperature Range: 40°F to 86°F
  • Accuracy: Plus or minus 1°F
  • Switch Type: DPST (double pole, single throw)
  • Wiring: 5.5-inch tinned copper leadwires
  • Mounting: Vertical, standard electrical box
  • Dimensions: 4 7/8 inches H x 2 3/4 inches W x 7/8 inch D
  • Color: Premier White
  • Interface: Push button
  • Display: Large backlit digital screen

Frequently Asked Questions

Q: Can this thermostat be programmed separately for each day of the week?

A: Yes, the TL8230A1003 offers true 7-day programming, allowing you to set a unique schedule for each individual day. Unlike 5-2 day programmable models, this thermostat lets you program Saturday differently from Sunday or any weekday differently from another. Each day supports up to four separate time periods with different temperature setpoints.


Q: Does this thermostat need batteries?

A: No, the TL8230A1003 is hardwired directly to your line voltage electric heating system and does not require batteries. It draws power from the 208V or 240V electrical circuit, so it remains operational as long as the circuit breaker is on.

Specs

Application:

Electric Heat (Line Voltage)

Heat Only

Stages:

1 Heat

Programmability:

Programmable

7 Day

User Interface:

Push Button

Mount:

Vertical

Options:

Large Display

Power Method:

Hardwired

Voltage:

208V

Line voltage

240v

Temperature Range (F):

40°F - 86°F

Switch:

DPST

Wattage:

3120 to 3600

Wiring:

5-1/2" Tinned Copper Leadwires

Frequency:

50 Hz

60 Hz

Color:

Premier White

Height:

4-7/8"

Width:

2-3/4"

Depth (Inches):

7/8"

Humidity Control:

No

Wireless:

No

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Product Reviews

4.72 out of 341 reviews
98% would recommend this product
4.72
out of 341 Reviews
98% would recommend this product
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5 star
77%
4 star
19%
3 star
2%
2 star
1%
1 star
1%
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Customer Images

Most Liked Positive Review

Good product with some limitations

This is a good product. Certainly the most appealing in the very small world of programable line voltage thermostats. It looks great, it's easy to use and it works fine. I am using it with radiant ceiling pannels in some bedrooms. As such I want heat in the evening and during the night, but not during the day. The programing of the times is very flexible. However, unlike most other programable thermostats that I have used, this one does not allow setting whatever temperature for each time slot. Instead you select 3 temperatures (vacation, at home, and away, or whatever the exact terms were)and then in each time slot you are limited to selecting one of those 3 temperatures. This might be fine for most people but can be a limiting factor for others. Also, the switching is mechanical (relay?) and I can hear it if I'm awake. It's about as noticeable as with the old mechanical thermostat that it replaced, so not a problem for the average sleeper altogether a good product that could be great if it allowed the same flexibility as most other programable thermostats. The purchasing experience from PexSupply was flawless. Great job guys!
VS

Most Liked Negative Review

Quality product but limited settings

I ordered 5 of these for a house I just purchased. The house has electric hydronic heat. The units appear to be good quality and are very accurate in holding the right temperature in the rooms. The one major flaw with these units is that they only allow for 2 temperate settings; Day and Night. You can have 4 schedules through out the day but all 4 need to be set at one of the 2 pre-set temps. For example, you can have Day = 68 and Night = 62, but is want it at 68 when you wake, 65 during the day, and then 62 when you sleep - you can't do this. You're stuck choosing between 62 or 68. I'm still recommending these because of their quality and accuracy but I'm only giving 3 stars because of the limitations with the scheduling.
Showing 1-10 of 341 reviews

yes

wall thernostat replaced 1968 vintage unit. Easy installation
jec
Easton, PA
1 years ago
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Quality products and exceptional customer service.

I ordered two four wire programmable thermostats. These thermostats were unavailable at local hardware stores.Supply house promptly delivered the thermostats. However, one of the thermostats did not work, prompting a call to customer service. Customer service patiently and professionally arranged the shipment of a new thermostat.I later discovered that the original thermostat was not defected, but installed incorrectly.Thank you Supply House for the prompt delivery of a quality product and exceptional customer service.
Mike
Longmeadow
1 years ago
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Works as Advertised

Product works perfectly. Didn't give it 5 stars because I had to search for an installation video on YouTube and they didn't provide instructions on how to reset the default temps it came with. I had to figure that out on my own after a frustrating hour playing with it.
Handy (Master of None)
East Stroudsburg, PA.
2 years ago
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I would buy again...

Install in all my rentals with electric heat. Excellent product and great customer service. Thank you
NONE
Cheyenne, Wyoming
2 years ago
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Makes a buzzing or humming sound when off

This seems to work ok, but it makes a buzzing or humming sound when it is turned off. It doesn't make the sound all the time, but enough to be annoying. Maybe it wouldn't bother some people. I saw another reviewer said this is a characteristic of the DPST design.
DIY Engineer
Idaho Falls
3 years ago
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KEEP UP THE GOOD WORK

SIMPLE AND RELIABLE
ZZ
MAMARONECK, NY
3 years ago
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Definitely buy again

Love this thermostat consistent temp very minimal room temp fluctuation. Background light will buy again.
Jim
New York
4 years ago
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I would definitely buy this again

It is used to control the radiant ceiling heat in our bedroom and I am going to buy another one for another bedroom.
Service tech
Greenville SC
4 years ago
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Highly Recommended

This unit replaced a new install of a Cadet Line Voltage thermostat. The Honeywell unit is a lot more user friendly than the Cadet thermostat. It is an easy installation. After reading instructions the user interface is very clear. Functions very well. It also looks nice on the wall.
Bill
Brooklyn, NY
4 years ago
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I would buy it again

Easy to install. has the features I needed.
Jacksly
Netcong NJ
5 years ago
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Product Q&A

45 Questions
45 Questions
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Q: Is this thermostat able to display the temperature in Celsius (Deg. C) ?

Asked by PC 12 years ago

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Hi, It's easy to change to C. Just move switch 4 to the other position. Happy heating. Pete

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Q: I'm looking at using these with King electric wall heaters with the blowers. Each one that I have is 240v and either 1000w or 1500w with their own wall thermostat. Will these work for me? Is there a minimum wattage for this thermostat?

Asked by Jerry 12 years ago

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- Sparkey

Yes these, t-stats can be used. Keeping in mind the built-in thermostat needs to be set higher than the wall thermostat setting. The heater will only operate to the lowest setting. Sent from my Verizon Wireless 4G LTE DROID

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Q: Is there a backing plate available for this Thermostat? Trying to eliminate small gaps around perimeter to wall .

Asked by Bryan 12 years ago

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Good question. Unfortunately, no. I too would like to see a solution to that as well. I have 5 of these installed and they could all use a clean backplate that's tapered a bit to hide any gaps. Sent from my iPhone

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Q: Can I use this product to replace my current thermostat for my radiant (water) base board heat?

Asked by Indy5 12 years ago

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Yes,if the following specs apply to you electrical system Pro 8000 is rated at 220 to 240 volts Max load is 17 Amps ,3600 watts,do not exceed this load If your voltage is less than 220 ,the max load will be less Sent from my iPad Best regards Matweecha

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-

You can if the water in the radiant baseboard heater is heated electrically and the existing thermostat senses ambient air temperature for controlling the temperature instead of some other means of feedback.

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Q: Wiill this thermostat work with an electric kick space heater? It will be set for 240v, 1800watt.

Asked by Mike 12 years ago

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You need to check the specs on the thermostat. Must be speced at 220-240 volts Must be speced at min 1800 watts Assuming both above specs are met,all heaters connected cannot have total wattage greater than 1800 Sent from my iPad Best regards Matweecha

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-

Yes it will. I have this thermostat connected to two 1000w kickspace heaters at 240v. Works great. Just don't place the t-stat on an outside wall or it will sense the room temp incorrectly. Sent from my iPhone

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-

It works on my kickspace heater. Sent from my iPhone

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Q: My current thermostat is labeled 125/250/277 volts. (Model# D2022H10BB). It is a double pole with 2 red and 2 black wires. The baseboards are labeled 240/208. The thermostat has a grounding wire attached to its metal housing. I did not see a grounding screw on the instruction for this thermostat. Is this because it is plastic? Will this be compatible for me, and can I use this without a ground wire attached? I am thinking yes but just want to make sure I am not overlooking something.

Asked by Questioning Everything 13 years ago

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Thermostat will work fine without a separate ground.

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- Geodude

Yes it will work.

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-

You are correct. the thermostat doesn't have a metal housing, so it does not need a ground wire attached to it. You should however connect the ground wire that comes from the power feed cable to the ground wire with the cable that goes to the heater. The will insure that the heater is grounded properly.

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Q: I UNDERSTAND THEY CAN BE USED FOR 240v. THATS ALL I SEE. WHICH IS PROBABLY DRAWING LESS CURRENT THUS LOWER WATTAGE. HOW DO I KNOW WHICH THERMOSTAT CAN BE USED WITH THE OLDER 110v BASE HEATERS ?.

Asked by APARTMENT RENTER 13 years ago

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Hi ! You need a 120 v thermostat for those base heaters Sent from my iPhone

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the specs state 220-240 volts, nothing about 120. call the manufacturer.

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- Geodude

Wattage would be the same, but 120v heater would draw twice the amps of a 240v heater (if they are rated for the same wattage). That being said, look into the Honeywell Aube TH106, it looks to work with 240 or 120v. Pat

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-

Hello I'm not quite sure as I have never used these on 110v units. They are the GREATEST High Voltage thermostats I have ever used or seen. In the usual install of a 220v unit, only one of the legs are broken. This turns off the heat. I'm not sure how the internals of the thermostat itself are wired. I would try hooking up one leg, make sure the other leg is wire nutted just for safety. If that didn't work I would try powering up the other leg. If this fails, then it can't be used. I would think a call to Honeywell, Tradeline, would get the correct answer. In any case, I assume my first thoughts should not hurt the unit. It costs more to run 110v heat than it does 240v heat. The best install on electric is to balance both legs as there is a waste cost that factors into the price of electric. Gary Manzi Manzi P & H manziph.com

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On second thought, I don't see why connecting both line leads to the line coming in and both load leads to the heat load. After all, the thermostat doesn't know which leg it is using. It might just need power, 110v, to each leg. Gary

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Q: I understand that the unit has a 4 periods programable and that the pre-set for at home is 70 degrees and away is 62 degrees. Is there a way to change the program to 68 degrees for at home and 60 degrees while away?

Asked by Pam 13 years ago

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You can adjust the thermostat to any set-point you'd like. Push the up or down arrow button until the desired set point is reached, then press and hold the appropriate home or away button and it should register the new value that you'd like for that setting.

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- Geodude

Yes, I think those are just the preset temperature values. You can make the home and away temps whatever you want.

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- Sparkey

Yes there is a way. It is simple. The instructions cover how to do that. You just select the day, night or away icons and change the temperature utilizing the up or down buttons.

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-

Yes you can set it to whatever temperature you want.

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-

You just press and hold home and away buttons at the temp you want them set at. They icon will appear and the temp is set. Scott Sent from my iPhone

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-

Yes, you can change the default and set it to any temp desired.

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-

Pam, I had to look the instructions up at the pex website but yes, you can change those settings. They are called "setpoints" and you will find them referenced in the users manual along with directions on how to change them. Best of luck, Billy Sent from AOL Mobile Mail

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-

All the time periods and temperatures can be adjusted from the defaults.

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- Rich

yes you change any of the presets to any temp you wish!

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Q: What is the difference between the TL8130A1005 and the TL8230A1003?

Asked by David 14 years ago

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Verified Author and ReplyVerified Reply- PexSupply Staff

TL8130A1005 is SPST (single pole, single throw) and TL8230A1003 is DPST (double pole, single throw). They also have different electrical ratings.

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The 8130 switches both sides of the line power, allows for more wattage to heater 4000watts 16.7 amps at 240 volts. The 8230 switches one side of line power has 3600 watts max to heater 15 amps at 240 volts. To determine wattage needed for the circuit add the length of the heaters supplied by the thermostat and multiply by 250= wattage needed. This method is the maximum wattage a heater would produce per foot. Some heaters may be less, but this is a typical value. You may also find the rating on a label on the heater somewhere at the bottom hidden. Keep in mind the circuit supplying the power. Typically an 8 foot heater would be 2000 watts at 240 volts and would require 8.3 amps, so two 8 foot heaters would be 16.6 amps and too much for a 20 amp circuit breaker, as you can only apply 16 amps of load to a 20 amp breaker and number 12 wire. Hope this helps

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Looks like just the electrical rating. 8130 is rated up to 4000 watts. 8230 is up to 3600 watts. See how many watts total on zone baseboard.

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Q: how does this unit react if the heater happens to draw more than 15A on 20A circuit? Thanks

Asked by DIYer 14 years ago

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Verified Author and ReplyVerified Reply- PexSupply Staff

According to the manufacturer, this thermostat would not be able to handle 20 amps with 2,000 watts.

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