8 Best Honeywell Two Wire Heat Only Thermostats (November 2026)
The best Honeywell 2 wire heat only thermostats include the LUX PSD010B Non-Programmable 2-Wire Heat-Only Thermostat for simple 2-wire heating, the White-Rodgers Emerson M30 White Heat-Only Thermostat for 24V mechanical control, and the Honeywell Home Digital Non-Programmable Thermostat for Electric for 120V or 240V electric heat.
On this page (7 sections)
- How we chose the best Honeywell 2 wire thermostat heat only models
- Best Honeywell 2 wire thermostat heat only picks
- How do you identify a two-wire heat-only thermostat?
- Is the Honeywell Home electric model right for baseboard heat?
- Can a two-wire thermostat control a boiler?
- What should you check before installing a Honeywell two-wire thermostat?
- Final pick for the best Honeywell 2 wire thermostat heat only
The best Honeywell 2 wire thermostat heat only option depends on your voltage. For 120V or 240V electric baseboards and convectors, choose the Honeywell Home Digital Non-Programmable Thermostat for Electric Heat Only.
For a low-voltage two-wire system, the Honeywell TH1100DV1000 is the more direct Honeywell match.
We compared the listed wiring, voltage, control type and stated heating uses. The highest scores go to products that fit a clear two-wire heat-only need, while the other picks are useful alternatives for compatible 24V, 3-wire or 4-wire systems.
If you want a wider comparison, see our guide to the best heat only thermostat. You can also compare this list with our guide to the best 2 wire thermostat heat only models.
Our picks at a glance
-
1
Best for simple 2-wire heatingLUX PSD010B Non-Programmable 2-Wire Heat-Only Thermostat
9.7/10 our score
See it on Amazon -
2
Best for 24V mechanical controlWhite-Rodgers Emerson M30 White Heat-Only Thermostat
9.5/10 our score
See it on Amazon -
3
Best for 120V or 240V electric heatHoneywell Home Digital Non-Programmable Thermostat for Electric
9.4/10 our score
See it on Amazon
- 4
Check itYeloDeer 2 PCS 240V Only 4-Wire Manual
Best for two 240V replacements - 5
Check itHoneywell T87K1007 Heat Only Thermostat
Best for classic 24V replacement - 6
Check itHoneywell TH1100DV1000 Pro-Digital 2-Wire Heat Only
Best for a readable Honeywell display - 7
Check itWhite-Rodgers Mechanical Heat Only Thermostat
Best for low-voltage single-stage heat - 8
Check itHoneywell Home CT87K1004 The Round Heat Only
Best for classic round styling
How we chose the best Honeywell 2 wire thermostat heat only models
The best Honeywell 2 wire thermostat heat only picks must match more than the number of wires. We gave the most weight to stated system compatibility, voltage, heat-only operation and the type of control you use each day.
The Honeywell Home electric model is a line-voltage thermostat for 120V or 240V heating. The Honeywell TH1100DV1000 is a battery-powered, low-voltage-style two-wire option with a digital display.
Those are different jobs, even though both use two wires.
We also included compatible alternatives because a search for Honeywell 2 wire thermostat heat only products can bring up nearby choices. The T87K1007 is a 3-wire 24V model, and the YeloDeer is a 4-wire 240V model, so neither should be treated as a direct two-wire replacement.
Our score weighs specs, features and buyer feedback against what you're shopping for.
| Product | Best for | System | Power | Size | Our score |
|---|---|---|---|---|---|
| LUX PSD010B Non-Programmable 2-Wire Heat-Only Thermostat | simple 2-wire heating | Heat-only 2-wire | 2 AA batteries | 1.1 D x 3.3 W x 5 H in | 9.7 |
| White-Rodgers Emerson M30 White Heat-Only Thermostat | 24V mechanical control | 24V heat-only | 9.5 | ||
| Honeywell Home Digital Non-Programmable Thermostat for Electric | 120V or 240V electric heat | Electric baseboards and convectors | 9.4 | ||
| YeloDeer 2 PCS 240V Only 4-Wire Manual | two 240V replacements | 240V 4-wire single-pole heat | 9.3 | ||
| Honeywell T87K1007 Heat Only Thermostat | classic 24V replacement | 24V heat only | 9.2 | ||
| Honeywell TH1100DV1000 Pro-Digital 2-Wire Heat Only | a readable Honeywell display | 2-wire heat only | 2 AAA batteries | 9.1 | |
| White-Rodgers Mechanical Heat Only Thermostat | low-voltage single-stage heat | Single-stage heat only | 9.1 | ||
| Honeywell Home CT87K1004 The Round Heat Only | classic round styling | Heat only | 2.88 D x 3.62 W x 3.62 H in | 8.9 |
Best Honeywell 2 wire thermostat heat only picks
The Honeywell Home Digital model is the strongest choice for electric line-voltage heat, while the TH1100DV1000 is the clearest Honeywell choice for a low-voltage two-wire setup. The remaining products serve specific wiring or control needs.
LUX PSD010B Non-Programmable 2-Wire Heat-Only Thermostat: Best for simple 2-wire heating
- 2-wire heat-only control
- Battery powered
- Large illuminated LCD
- For fireplaces, stoves and in-floor radiant heat
The LUX PSD010B is a strong fit for simple heat-only systems where you want a clear display and battery-powered operation. Its stated uses include fireplaces, stoves and in-floor radiant heat.
Pros
- 2-wire heat control
- Illuminated display
- Battery powered
Cons
- Not a Honeywell-branded model
- Confirm system compatibility before wiring
The LUX PSD010B is the top overall pick for a simple two-wire heat-only installation. Its stated uses include fireplaces, stoves and in-floor radiant heat, so it may suit heating systems that do not use a fan switch.
The large illuminated LCD is easier to read than a plain mechanical dial in a dim hallway or utility area. It uses 2 AA batteries and has button control, which keeps daily adjustments simple.
This is a battery-powered thermostat with a wall-mount design. The unit is listed at 1.1 D x 3.3 W x 5 H inches and weighs 6.4 ounces.
That size gives it a vertical presence on the wall. It can sit near a doorway or in a room where you pass the heater controls often.
Choose the LUX when your system matches its stated heat-only uses and you want a clear display. It is not a Honeywell model, but it is a useful comparison for buyers searching for a Honeywell 2 wire thermostat heat only replacement.
Battery power also means you should keep spare AA batteries handy. When the display fades, a simple swap is easier than rewiring the thermostat.
White-Rodgers Emerson M30 White Heat-Only Thermostat: Best for 24V mechanical control
- 24V heat-only operation
- Mechanical snap action
- Temperature display
- Wall mount
The Emerson M30 suits a 24V heat-only system where simple hand control matters more than programming. Its wall plate and white finish keep the installation familiar.
Pros
- 24V heat-only design
- Simple hand control
- Wall mount
Cons
- Not a Honeywell-branded model
- Confirm the existing wiring and voltage
The White-Rodgers Emerson M30 is best for a 24V heat-only system that uses mechanical snap-action control. Its white wall-mount design and hand control suit a reader who wants a direct, familiar adjustment.
The product data identifies it as a standard mechanical snap-action thermostat for heat only. It has a temperature display, a white plastic body and a polished finish.
Snap-action control gives a clear feel when the setting changes. That feedback can be useful in a room where you want to know by touch that the control has moved.
This is not a Honeywell thermostat, and the 24V detail matters. Check the existing system voltage before choosing it, especially if your current thermostat controls electric baseboards directly.
Choose the Emerson M30 when your wiring and voltage match 24V heat-only service. For a broader Honeywell comparison, see the best honeywell heat only thermostat guide.
A simple hand control also suits homes with guests who do not want to learn a menu. There is no schedule to set and no display to program before the room can warm.
Honeywell Home Digital Non-Programmable Thermostat for Electric: Best for 120V or 240V electric heat
- 2-wire non-polarized connection
- 120V or 240V line-voltage heat
- Silent TRIAC switching
- 2,000W maximum at 240V
This Honeywell Home model is designed for electric baseboards, convectors and radiant ceilings with a 2-wire connection. Its digital controls and silent switching suit rooms where relay clicking is distracting.
Pros
- Honeywell Home brand
- Digital display
- Silent switching
Cons
- Cannot be used with a fan-forced convector
- Line-voltage wiring needs careful identification
The Honeywell Home Digital Non-Programmable Thermostat for Electric Heat Only is the best Honeywell choice for compatible 120V or 240V line-voltage heat. It is made for electric baseboards, convectors and radiant ceilings with a 2-wire non-polarized connection.
Its digital controls show the heating power indicator, while TRIAC switching is designed for silent operation. The stated load range is 200W minimum to 2,000W maximum at 240V, with an 8.3A resistive maximum at 240V.
Non-polarized connection can simplify hookup because the two wires do not need a strict polarity match. That still does not remove the need to confirm voltage and load before wiring.
The model cannot be used with a fan-forced convector. That limitation is important because a thermostat for a standard electric baseboard may not control a fan-forced heater correctly.
The unit is 1.1 D x 3.2 W x 4.8 H inches and includes mounting screws and solderless connectors. Choose it when your heater falls within the stated line-voltage range and load.
Silent switching matters most in bedrooms and quiet living rooms. Without relay clicking, the room can heat with less distraction during the night.
YeloDeer 2 PCS 240V Only 4-Wire Manual: Best for two 240V replacements
- 2-pack
- 240V manual control
- 4-wire single-pole heat
- 40°F to 80°F control range
The YeloDeer is aimed at 240V electric baseboard systems that use 4-wire single-pole wiring. The 2-pack can help when two matching thermostat locations need replacement.
Pros
- Two thermostats in one pack
- 240V design
- Large manual dial
Cons
- Not a Honeywell model
- It is a 4-wire design, not a 2-wire replacement
The YeloDeer 2 PCS model is best when you need two matching 240V thermostats for electric baseboard heaters. It is a manual, non-programmable 4-wire single-pole design, so it is not a direct replacement for a two-wire thermostat.
The large dial adjusts from 40°F to 80°F, and indicator lights show the connection point and whether heating is taking place. The stated maximum output is 20A and 4,800W for the 240V version.
A wide dial range gives flexibility for mild and cold weather. You can set a lower temperature for overnight comfort or raise it when a room feels chilly.
Each thermostat measures 2.9 x 4.6 x 2 inches. The pack contains 2 units, and the design is intended for surface mounting.
Surface mounting can help where a standard wall box is not a good fit. It also keeps the control visible beside the heater rather than hidden behind a cover.
Choose this only when your system uses the matching 240V, 4-wire setup. The extra thermostat can be useful for a second compatible room, but the wire count and voltage must match before installation.
Honeywell T87K1007 Heat Only Thermostat: Best for classic 24V replacement
- 24V heat-only design
- 3-wire connection
- 40°F to 90°F range
- No batteries required
The Honeywell T87K1007 fits buyers replacing a compatible 24V, 3-wire heat-only thermostat. It is a classic-style option, but its 3-wire design does not match every two-wire installation.
Pros
- Honeywell brand
- No batteries required
- Wide stated temperature range
Cons
- 3-wire model
- No warranty is stated in the product data
The Honeywell T87K1007 is best for a compatible 24V, 3-wire heat-only system. It is not a two-wire thermostat, but it belongs in this comparison because older Honeywell installations may use three wires.
The classic thermostat has a stated 40°F to 90°F temperature range and needs no batteries. Its control is mechanical, with a dial-style design and a white plastic body.
No batteries required can reduce routine upkeep. The control relies on the existing 24V system rather than a separate battery check.
The product data describes it as a genuine OEM replacement part and a mercury-free thermostat. It is wall mounted and weighs 18.14 grams.
Its mechanical control suits people who prefer a direct setting over a digital screen. You turn the control and let the heating system respond without entering a program.
Choose the T87K1007 when your existing system is a compatible 24V three-wire installation. Do not remove a wire simply to make this model fit a two-wire setup.
Honeywell TH1100DV1000 Pro-Digital 2-Wire Heat Only: Best for a readable Honeywell display
- 2-wire heat-only design
- Backlit display
- 40°F to 90°F scale
- Ambient temperature display
The Honeywell TH1100DV1000 gives a two-wire heat-only setup a backlit digital display. It suits readers who want to see the ambient temperature without using a programmable schedule.
Pros
- Honeywell 2-wire model
- Backlit display
- Shows ambient temperature
Cons
- Requires 2 AAA batteries
- Confirm the heating system before installation
The Honeywell TH1100DV1000 is the best Honeywell option here for a low-voltage 2-wire heat-only system with a backlit display. It shows the measured ambient temperature and offers one-touch access to the setpoint.
Its stated temperature scale runs from 40°F to 90°F. The thermostat is battery powered and requires 2 AAA batteries, so it does not depend on a dedicated power wire for its display.
Seeing the ambient temperature at all times helps you judge the room without guesswork. A backlit screen also helps at night or in a dark hallway.
The wall-mount unit has push-button control and a digital display. Honeywell also lists built-in compressor protection, although you should still confirm that your heating equipment matches the thermostat's intended use.
Push-button control keeps the daily routine simple. You press to check the setpoint, adjust it, and return to the normal display.
Choose this model when you have two existing wires and need a readable digital control. For programmable options, compare the best 2 wire heat only programmable thermostat guide.
White-Rodgers Mechanical Heat Only Thermostat: Best for low-voltage single-stage heat
- Single-stage heat-only use
- Mechanical control
- 50°F to 90°F range
- Mercury-free design
This White-Rodgers model fits a single-stage, low-voltage heating system when a simple mechanical control is preferred. Its adjustable heat anticipator and bimetal thermometer support traditional operation.
Pros
- Single-stage heat-only design
- Mercury-free
- Mounting hardware included
Cons
- Not a Honeywell model
- Not a line-voltage electric baseboard thermostat
The White-Rodgers Mechanical Heat Only Thermostat is best for a single-stage, low-voltage heating system where a basic mechanical control is enough. It is mercury-free and includes the thermostat, instructions and mounting hardware.
Its temperature range is 50°F to 90°F. The adjustable heat anticipator and bimetal thermometer support traditional control without a digital display.
That range covers normal indoor heating needs without extra modes. It is a focused choice for a system that only calls for heat.
An optional wall plate is available separately to cover marks left by an old thermostat. That can help when the replacement does not fully hide the previous mounting area.
Included mounting hardware can save a trip for screws and anchors. Instructions also help you match the thermostat to the single-stage system before you connect the wires.
This model is not a Honeywell 2-wire thermostat and is not for line-voltage electric baseboards. Choose it only when your system is a compatible low-voltage, single-stage heat-only setup.
Honeywell Home CT87K1004 The Round Heat Only: Best for classic round styling
- Manual heat-only control
- Round dial
- Mercury-free
- Plus or minus 1°F control
The Honeywell Home CT87K1004 is for buyers who want a familiar round dial and manual heat-only control. Its decorative cover ring can hide wall marks around an older thermostat.
Pros
- Honeywell Home brand
- Round manual design
- Mercury-free
Cons
- No digital display
- Confirm wiring before replacing a two-wire thermostat
The Honeywell Home CT87K1004 is best for buyers who want classic round styling and a manual dial. Its familiar twist control gives you a direct way to set the temperature without a digital menu.
The thermostat is mercury-free and provides stated control of plus or minus 1°F. A decorative cover ring can hide wall marks around an older thermostat.
A round dial can be easy for older users and guests to understand. There is no screen to wake and no menu to leave in the wrong mode.
The round unit measures 2.88 D x 3.62 W x 3.62 H inches and weighs 3.2 ounces. It is a one-unit, wall-mounted thermostat with corded electric power.
Its shape stands out from rectangular digital models. That familiar look can suit a traditional room where a new control should blend with older fixtures.
Choose it for compatible heat-only wiring and a classic appearance. Do not assume the round shape means it matches every two-wire system, so confirm the wiring and voltage first.
How do you identify a two-wire heat-only thermostat?
A two-wire heat-only thermostat usually has two wires connected to a simple heating control circuit. The wire count alone is not enough because two-wire thermostats can control different types of systems.
Start by checking whether the heater is low voltage or line voltage. Electric baseboards and convectors may use 120V or 240V power, while other heat-only systems may use a lower control voltage.
Voltage affects safety and compatibility in a direct way. A low-voltage control should not be treated as a line-voltage baseboard control.
Turn off power at the correct breaker before opening the thermostat. Photograph the existing wire positions, label the wires, and use the heater and thermostat instructions to confirm the system.
A photo gives you a record if a wire slips during removal. Labels help you return each wire to the same place on the new control.
If you see more wires behind the wall, don't assume they are unused. A previous thermostat may have concealed wires, or the system may need more connections than the replacement provides.
Extra wires can also point to a fan, a heat pump or a multi-stage setup. When the count does not match the new thermostat, stop and check the equipment manual.
Careful identification takes a few minutes but can prevent a poor fit. It also helps you choose a model that matches the heater rather than the label alone.
Is the Honeywell Home electric model right for baseboard heat?
The Honeywell Home electric model is right for compatible electric baseboards and convectors using 120V or 240V line voltage. It is not suitable for a fan-forced convector.
That fan limit matters because a fan-forced unit needs control that can manage the fan as well as the heat. A standard baseboard thermostat may not provide the right switching for that setup.
Line-voltage thermostats control power directly, so installation needs more care than replacing a low-voltage wall control. Confirm the heater voltage, minimum load and maximum load before buying.
Minimum load is easy to overlook when a room has a small heater. If the load falls below the stated minimum at 240V, the thermostat may not cycle the way you expect.
Maximum load matters just as much for a larger heater or a longer baseboard run. A thermostat that is underpowered for the load can wear out or fail to control the room well.
Silent TRIAC switching is a practical benefit for this model. It removes the click that can disturb sleep in a bedroom with electric heat.
Digital control also gives a clear heating power indicator. You can see at a glance that heat is being called for without listening for a relay.
For another heating format, see our guide to the best honeywell thermostat for baseboard heater. That comparison can help if your system is electric baseboard heat rather than a low-voltage furnace control.
Two-wire non-polarized connection can make the wiring step simpler. It does not change the need to confirm voltage, load and heater type first.
If your heater is a radiant ceiling system, check that use in the product details as well. The same care with load and voltage applies across these electric formats.
A non-programmable model suits a room that stays on a steady manual setting. It avoids schedules that a simple electric heater may not need.
Before you buy, match the model to the nameplate on the heater. That step is the safest way to confirm that the electric thermostat fits the room.
Can a two-wire thermostat control a boiler?
A two-wire thermostat can control some boiler systems, but compatibility depends on the boiler's control circuit and voltage. A thermostat designed for electric baseboard heat is not automatically correct for a boiler.
A boiler may use a low-voltage control circuit that opens and closes a heating call. That is different from sending line voltage directly to a baseboard heater.
Check the boiler controls and the existing thermostat before choosing a replacement. A low-voltage heat-only thermostat may fit one boiler setup, while another system may need a different control arrangement.
Look for the voltage marked near the boiler thermostat terminals. Also note whether the existing control has two wires or more.
A two-wire label tells you only part of the story. It does not prove that the thermostat matches the boiler relay, aquastat or zone control.
Some boiler systems use zone valves that need a compatible switching signal. A thermostat made for electric baseboards may not provide the right control for those valves.
Others may use a circulator pump that starts with the heating call. The thermostat still needs to match the control voltage and wiring style.
Our guide to the best heat only thermostat for boiler focuses on that separate use case. Match the thermostat to the boiler controls instead of choosing by the two-wire label alone.
Keep the existing thermostat model number while you shop. It can help you compare control type, voltage and wire count with a replacement.
If the boiler has more than heat-only control, a simple thermostat may not be enough. Multi-stage or outdoor reset systems need controls made for that equipment.
Turn off power to the boiler controls before changing wires. Low voltage is easier to handle than line voltage, but it still deserves care.
A good match should give steady heat without short cycling. If the boiler manual lists a specific thermostat type, follow that guidance first.
For a simple one-zone boiler, a basic heat-only control may be all you need. The key is confirming that the thermostat and boiler were designed to work together.
What should you check before installing a Honeywell two-wire thermostat?
Check the system voltage, heater type, wire count, minimum load and maximum load. Also confirm whether the thermostat is made for low-voltage control or line-voltage electric heat.
A programmable thermostat is not always an upgrade for a simple heat-only system. If you only need manual temperature adjustment, a non-programmable model may be easier to use and less likely to add controls your system cannot support.
For heat pumps, use a thermostat made for the equipment's stages and reversing valve. A standard heat-only thermostat is not a substitute for the correct heat-pump control.
Our heat pump thermostat guide explains the difference.
Two-stage equipment also needs the right terminals and control logic. Learn more in [What Is a Two Stage Thermostat?
The Complete Guide](/what-is-a-two-stage-thermostat/) before replacing a thermostat on multi-stage heating equipment.
Final pick for the best Honeywell 2 wire thermostat heat only
Choose the Honeywell Home Digital Non-Programmable Thermostat for Electric Heat Only when your heater is a compatible 120V or 240V baseboard, convector or radiant-ceiling system. Choose the Honeywell TH1100DV1000 when your low-voltage heat-only setup uses two wires and you want a backlit display.
Those two Honeywell choices cover the most common split in this search. One handles line-voltage electric heat directly, while the other suits a lower-voltage two-wire control.
Pick the LUX PSD010B for simple heat-only uses such as fireplaces, stoves or in-floor radiant heat. Its illuminated display and battery power make it a practical option for those systems.
Choose the T87K1007 only for a matching 24V, 3-wire installation. Its classic mechanical design fits older Honeywell setups but not every two-wire wall.
Choose the YeloDeer only for a compatible 240V, 4-wire system. The 2-pack helps when two rooms need the same manual baseboard control.
The White-Rodgers options cover simpler low-voltage needs. The Emerson M30 suits 24V mechanical control, while the 1C20-102 suits single-stage heat with traditional operation.
The Honeywell Home CT87K1004 suits buyers who want round styling. Its manual dial and mercury-free design keep the control familiar and direct.
The right Honeywell 2 wire thermostat heat only model is the one that matches your wiring, voltage and heater. Confirm those three details before removing the old thermostat.
Write down the voltage, wire count and heater type before you order. That short check can save time and help you avoid returning a thermostat that does not fit.
If any detail is unclear, check the heater nameplate or equipment manual. A careful match will give you steadier heat and a simpler installation.
Our top 3 picks at a glance
-
1
Best for simple 2-wire heating
LUX PSD010B Non-Programmable 2-Wire Heat-Only Thermostat
9.7/10 our score
See it on Amazon -
2
Best for 24V mechanical control
White-Rodgers Emerson M30 White Heat-Only Thermostat
9.5/10 our score
See it on Amazon -
3
Best for 120V or 240V electric heat
Honeywell Home Digital Non-Programmable Thermostat for Electric
9.4/10 our score
See it on Amazon
Frequently asked questions
Can I use a Honeywell 2 wire thermostat for any heat-only system?
No. A Honeywell 2 wire thermostat must match the heating system's voltage, wiring and control type.
Some two-wire models are for low-voltage heat-only systems, while the Honeywell Home electric model is for 120V or 240V line-voltage heat.
Turn off power and identify the system before wiring.
What is the best Honeywell 2 wire thermostat heat only model?
The Honeywell Home Digital Non-Programmable Thermostat for Electric Heat Only is the best fit here for compatible 120V or 240V electric baseboards and convectors. The Honeywell TH1100DV1000 is the better match when you have a low-voltage two-wire heat-only system and want a backlit display.
Are two wires enough for a heat-only thermostat?
Two wires can be enough for a heat-only thermostat because the thermostat may only open or close the heating control circuit. That does not make every two-wire thermostat interchangeable.
Check whether the system is low voltage or line voltage, then match the thermostat to the stated system.
Can I replace a 3-wire Honeywell thermostat with a 2-wire model?
Not automatically. The Honeywell T87K1007 is a 24V, 3-wire heat-only thermostat, while the TH1100DV1000 is a 2-wire model.
The number of wires, voltage and heating controls must all match.
If the existing setup is unclear, ask a qualified HVAC professional.
