ProThermostats.com > Products > Thermostat Brands > Honeywell Thermostats > Honeywell Thermostat Accessories > Honeywell TL8100 Programmable Hydronic Thermostat - Heat-Only

Honeywell TL8100 Programmable Hydronic Thermostat - Heat-Only

Honeywell TL8100 Programmable Hydronic Thermostat - Heat-Only

About This Thermostat

MFG: Honeywell
MFG#: TL8100A1008
Our#: 173744
Programmable: Yes (7 Day)
Stages: 1 Heat
System Compatibility: Heat Only, Millivolt, Line Voltage
Power Options: Battery, Hardwire
Heat/Cool Changeover: None
Programmable Fan: No
Temperature Limits: No
Keypad Lockout: No
Backlight: No
Vacation Hold: No

Honeywell TL8100 Programmable Hydronic Thermostat - Heat-Only

Honeywell's TL8100 Hydronic Thermostat offers the energy savings of a programmable control for a wide variety of applications. It can be used to control 2-way zone valves, 3-way zone valves or circulator pumps in both line volt and low volt applications. It also offers special protection modes to prevent system seizures and to reduce callbacks.

The TL8100 works in the following Hydronic applications:
. Line volt circulators
. 24 volt circulator relays
. 24 volt zone valves
. 120 volt zone valves

Not only is the TL8100 great for valve and pump control, it also does much more!
. Electric heating up to 1200W@ 240V max.
. Millivolt systems (e.g., gas fireplaces)
. Gas, oil or electric systems
. Hot air system with no fan control

Features:
7-Day Programmable - Up to 4 periods per day to fit any lifestyle and help save energy.
Precise Comfort (+/-1ºF) - Maintains consistent comfort to the highest level of accuracy.
Low Battery Indicator - Gives 60-day warning to replace batteries.
Installation Flexibility - Works with mV, 24V, 120VAC, and 240VAC heating systems. Rated at 5A resistive and 2A inductive load.
Pump Protection - Activates zone valves or pumps for one minute every 24 hours to prevent seizures and reduce callbacks.
Armchair Programming - Save time on the job with convenient programming by simply removing the faceplate from the base.

Specifications:
Application - Hydronic and Electric Heating Systems
Programmability - 7 Day Program
Color - Premier White®
Terminal Designations - R, W, (X, C, optional remote input)
Switching Action - SPDT
Dimensions (in.) - 4.9 in. high X 3.8 in. wide X 1 in. deep
Dimensions (mm) - 127 mm high X 97 mm wide X 26 mm deep
Mounting - Vertical
Electrical Ratings  Maximum load: 5 A (resistive) @ 24 V, 120 V, 240 V 2 A (inductive) @ 24 V, 120 V, 240 V
Frequency  50/60 Hz
Electrical Connections  5.5 in. (140mm) tinned copper lead wires
Operating Temperature Range (F)  32 F to 122 F
Operating Temperature Range (C)  0 C to 50 C
Setting Temperature Range (F)  40 F to 85 F
Setting Temperature Range (C)  5 C to 30 C
Stages  1 Heat
Sensor Element  Thermistor
Voltage  24 VDC, 120 Vac, 240 Vac

ProThermostats.com Price:

$72.07

Regular $138.29, You Save $66.22 (48%)
In Stock

Quantity

Shipping Details
  • Standard: 2-7 Business Days: Free!
Shipping fees listed are for a quantity of (1)

REVIEW SNAPSHOT®

by PowerReviews
Honeywell TL8100 Programmable Hydronic Thermostat - Heat-Only
 
4.4

(based on 8 reviews)

100%

of respondents would recommend this to a friend.

Pros

  • Easy to install (7)
  • Easy to adjust (6)
  • Intuitive controls (3)

Cons

    Best Uses

    • Home (4)
      • Reviewer Profile:
      • Homeowner (5), Professional (4), Avid do-it-yourselfer (3)

    Reviewed by 8 customers

    Sort by

    Displaying reviews 1-8

    Back to top

     
    4.0

    It's helping reduce our heating costs.

    By PR

    from Lancaster, PA

    About Me Professional

    Verified Buyer

    Pros

    • Easy To Adjust
    • Easy To Install

    Cons

      Best Uses

      • Large Rooms
      • Offices

      Comments about Honeywell TL8100 Programmable Hydronic Thermostat - Heat-Only:

      It has helped us reduce our energy bills. We have now purchased three thermostats to upgrade 3 different areas of our church building.

       
      5.0

      Worked well with an inductive load

      By Kevin

      from San Francisco

      About Me Professional

      Verified Buyer

      Pros

        Cons

          Best Uses

            Comments about Honeywell TL8100 Programmable Hydronic Thermostat - Heat-Only:

            This Honewell thermostat worked well with an inductive load for fans and pumps. Our installation included a recirc pump and a convective fan. Don't buy the Verdant line voltage thermostat for anything other than a purely resistive load. Actually, don't buy any Verdant products, they have no customer support and don't answer their phone. Buy the Honeywell instead. It's more flexible with installations.

             
            4.0

            Great product

            By Ralph

            from Baltimore

            About Me Homeowner

            Verified Buyer

            Pros

            • Easy To Adjust
            • Easy To Install

            Cons

            • Hard To Read Display

            Best Uses

            • Homes

            Comments about Honeywell TL8100 Programmable Hydronic Thermostat - Heat-Only:

            This is good thermostat for my application. Easy to install & program. Controls my hydronic baseboard heating system perfectly.

            (1 of 1 customers found this review helpful)

             
            4.0

            We are now staying warmer!

            By Gene

            from Springdale, WV

            About Me Handyman, Homeowner, Professional

            Verified Buyer

            Pros

            • Easy To Adjust
            • Easy To Install
            • Intuitive Controls

            Cons

              Best Uses

              • Homes

              Comments about Honeywell TL8100 Programmable Hydronic Thermostat - Heat-Only:

              works well -- thanks

              (2 of 2 customers found this review helpful)

               
              4.0

              Pretty nice - one functional drawback

              By Energy geek

              from Oakland CA

              About Me Homeowner, Professional

              Verified Buyer

              Pros

              • Easy To Install
              • Intuitive Controls

              Cons

              • Minimal temp options

              Best Uses

              • Homes

              Comments about Honeywell TL8100 Programmable Hydronic Thermostat - Heat-Only:

              Overall performs fine, easy to install and set up and it looks nice in my mid-modern home. Only drawback is that you can only set one temperature for occupied periods and one temp for unoccupied periods. I would rather set one setpoint for early mornings, and a different one for evenings - which I can't do.

              (2 of 3 customers found this review helpful)

               
              5.0

              Perfect

              By JP

              from Coram NY

              About Me Handyman, Homeowner

              Verified Buyer

              Pros

              • Easy To Adjust
              • Easy To Install
              • Precise Controls

              Cons

                Best Uses

                  Comments about Honeywell TL8100 Programmable Hydronic Thermostat - Heat-Only:

                  I have two thermostats, one line voltage and one low voltage. I wanted the same thermostat in both spots and this was it. Simplest installation possible, works great, looks great - these have been perfect.

                  (2 of 2 customers found this review helpful)

                   
                  5.0

                  So far so good

                  By Sebastian

                  from Central Vermont

                  About Me Handyman

                  Verified Buyer

                  Pros

                  • Easy To Adjust
                  • Easy To Install
                  • Intuitive Controls
                  • Precise Controls

                  Cons

                    Best Uses

                      Comments about Honeywell TL8100 Programmable Hydronic Thermostat - Heat-Only:

                      This was very easy to install, although I chose the conventional setting as I am using it to control a "smart pump" circulating hot water to radiators. This thermostat seems to have far nicer design features than the Lux models. Easy to read and It is also quite quiet with only an unobtrusive soft click as it switches.In addition I like the fact that it has a low battery indicator but since it is newly installed I have not seen that feature in operation.

                      (1 of 1 customers found this review helpful)

                       
                      4.0

                      I will buy another

                      By JW

                      from New York

                      About Me Homeowner

                      Verified Buyer

                      Pros

                      • Easy To Adjust
                      • Easy To Install

                      Cons

                        Best Uses

                        • Homes

                        Comments about Honeywell TL8100 Programmable Hydronic Thermostat - Heat-Only:

                        easy to install, clear display, replacing my old mechanical thermostat with a programable one will lower my heating cost. I am planning to purchase another one for the other zone in my home.

                        Displaying reviews 1-8

                        Back to top