10 models to compare

Can a smart thermostat run more than two stages?

Only the X8S, on conventional systems. Of the nine Honeywell Home SKUs with stage limits, it alone reaches 3 heating and 4 cooling stages.

Heat pumps have more choice: six handle 3 or more heat-pump heating stages.

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With no preferences selected: Honeywell Home FocusPRO S200 Smart Thermostat (TH2110WF4008/U) is one option to compare.

No hands-on testingMethod and sources

Honeywell Home FocusPRO S200 Smart Thermostat (TH2110WF4008/U) · first with a product link

  • Conventional heating stages: 1 stage.
  • Conventional cooling stages: 1 stage.
What to note:

Not listed by the maker: 5 GHz Wi-Fi.

View at Honeywell Home

If you choose At least 2 stages for conventional heating stages, the first option with a product link becomes Honeywell Home Smart Thermostat THX321WF2003W/U.

10 models compared; 10 have a product-page link.

The picks

5 options to compare

Compare the details that matter to your setup.

An option to compare

Honeywell Home FocusPRO S200 Smart Thermostat (TH2110WF4008/U)

Conventional heating stages: 1 stage.

Key details

  • Conventional cooling stages: 1 stage.

What to note

Not listed by the maker: 5 GHz Wi-Fi.

Conventional heating stages: 1 stageConventional cooling stages: 1 stageHeat-pump heating stages: 1 stage
See all 5 specs
Conventional heating stages1 stage
Conventional cooling stages1 stage
Heat-pump heating stages1 stage
Width5.13 in
5 GHz Wi-FiNot listed by the maker

4 of 5 specs available · source checked September 26, 2026 · Source ↗
Honeywell Home · Product page checked September 26, 2026

Conventional heating stages: At least 2 stages

Honeywell Home Smart Thermostat THX321WF2003W/U

5 GHz Wi-Fi: Yes.

Key details

  • Conventional cooling stages: 2 stages.

What to note

Conventional heating stages: 2 stages.

Conventional heating stages: 2 stagesConventional cooling stages: 2 stagesHeat-pump heating stages: 3 stages
See all 5 specs
Conventional heating stages2 stages
Conventional cooling stages2 stages
Heat-pump heating stages3 stages
5 GHz Wi-FiYes
Width3.7 in

5 of 5 specs available · source checked September 26, 2026 · Source ↗
Honeywell Home · Product page checked September 26, 2026

Also compare 3

Honeywell Home T5 Smart Thermostat (RCHT8610WF2006/U)

Heat-pump heating stages: 3 stages.

Key details

  • Conventional cooling stages: 2 stages.

What to note

Not listed by the maker: width.

Conventional heating stages: 2 stagesConventional cooling stages: 2 stagesHeat-pump heating stages: 3 stages
See all 5 specs
Conventional heating stages2 stages
Conventional cooling stages2 stages
Heat-pump heating stages3 stages
5 GHz Wi-FiNo
WidthNot listed by the maker

4 of 5 specs available · source checked September 26, 2026 · Source ↗
Honeywell Home · Product page checked September 26, 2026

Also compare 4

Honeywell Home T6 Pro Smart Thermostat (TH6220WF2006/U)

Width: 4.06 in.

Key details

  • Conventional cooling stages: 2 stages.

What to note

Conventional heating stages: 2 stages.

Conventional heating stages: 2 stagesConventional cooling stages: 2 stagesHeat-pump heating stages: 2 stages
See all 5 specs
Conventional heating stages2 stages
Conventional cooling stages2 stages
Heat-pump heating stages2 stages
5 GHz Wi-FiNo
Width4.06 in

5 of 5 specs available · source checked September 26, 2026 · Source ↗
Honeywell Home · Product page checked September 26, 2026

Also compare 5

Honeywell Home T9 Smart Thermostat (RCHT9610WFSW2003/U)

5 GHz Wi-Fi: Yes.

Key details

  • Width: 3.7 in.

What to note

Not listed by the maker: conventional heating stages, conventional cooling stages, heat-pump heating stages.

5 GHz Wi-Fi: YesWidth: 3.7 in
See all 5 specs
5 GHz Wi-FiYes
Width3.7 in
Conventional heating stagesNot listed by the maker
Conventional cooling stagesNot listed by the maker
Heat-pump heating stagesNot listed by the maker

2 of 5 specs available · source checked September 26, 2026 · Source ↗
Honeywell Home · Product page checked September 26, 2026

Comparing Honeywell Home FocusPRO S200 Smart Thermostat (TH2110WF4008/U) · Honeywell Home Smart Thermostat THX321WF2003W/U

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The facts that differ

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0 identical specs shown. Details that do not apply to these models are omitted.

Published specification comparison
SpecHoneywell Home FocusPRO S200 Smart Thermostat (TH2110WF4008/U)No preferences selected.Honeywell Home Smart Thermostat THX321WF2003W/UNo preferences selected.
Conventional heating stages1 stage2 stages
Conventional cooling stages1 stage2 stages
Heat-pump heating stages1 stage3 stages
5 GHz Wi-FiNot listed by the makerYes
Width5.13 in3.7 in

Honeywell Home FocusPRO S200 Smart Thermostat (TH2110WF4008/U)

No preferences selected.

Conventional heating stages
1 stage
Conventional cooling stages
1 stage
Heat-pump heating stages
1 stage
5 GHz Wi-Fi
Not listed by the maker
Width
5.13 in

Honeywell Home Smart Thermostat THX321WF2003W/U

No preferences selected.

Conventional heating stages
2 stages
Conventional cooling stages
2 stages
Heat-pump heating stages
3 stages
5 GHz Wi-Fi
Yes
Width
3.7 in

Honeywell Home FocusPRO S200 Smart Thermostat (TH2110WF4008/U)

View at Honeywell Home

Honeywell Home Smart Thermostat THX321WF2003W/U

View at Honeywell Home

Compare all 10 models

— = no verified listing yet. The published order is independent of links.

All models and their decision specs
ProductHow it comparesKey specCompareAction
Honeywell Home FocusPRO S200 Smart Thermostat (TH2110WF4008/U)
Compared with Honeywell Home Smart Thermostat THX321WF2003W/U: conventional heating stages, 1 stage vs 2 stages.
Conventional heating stages: 1 stageView at Honeywell Home
Honeywell Home Smart Thermostat THX321WF2003W/U
Compared with Honeywell Home T5 Smart Thermostat (RCHT8610WF2006/U): 5 GHz Wi-Fi, Yes vs No.
Conventional heating stages: 2 stagesView at Honeywell Home
Honeywell Home T5 Smart Thermostat (RCHT8610WF2006/U)
Compared with Honeywell Home T6 Pro Smart Thermostat (TH6220WF2006/U): heat-pump heating stages, 3 stages vs 2 stages.
Conventional heating stages: 2 stagesView at Honeywell Home
Honeywell Home T6 Pro Smart Thermostat (TH6220WF2006/U)
Compared with Honeywell Home T9 Smart Thermostat (RCHT9610WFSW2003/U): 5 GHz Wi-Fi, No vs Yes.
Conventional heating stages: 2 stagesView at Honeywell Home
Honeywell Home T9 Smart Thermostat (RCHT9610WFSW2003/U)
Compared with Honeywell Home VisionPRO 8000 WiFi Programmable Thermostat (TH8321WF1001/U): 5 GHz Wi-Fi, Yes vs No.
5 GHz Wi-Fi: YesView at Honeywell Home
Honeywell Home VisionPRO 8000 WiFi Programmable Thermostat (TH8321WF1001/U)
Compared with Honeywell Home WiFi 9000 Color Touchscreen Thermostat (TH9320WF5003/U): width, 4.94 in vs 4 1/2 in.
Conventional heating stages: 2 stagesView at Honeywell Home
Honeywell Home WiFi 9000 Color Touchscreen Thermostat (TH9320WF5003/U)
Compared with Honeywell Home X2S Smart Thermostat (RTH2CWF/U): heat-pump heating stages, 3 stages vs 2 stages.
Conventional heating stages: 2 stagesView at Honeywell Home
Honeywell Home FocusPRO S200 Smart Thermostat (TH2110WF4008/U)
Compared with Honeywell Home Smart Thermostat THX321WF2003W/U: conventional heating stages, 1 stage vs 2 stages.
Conventional heating stages: 1 stage
Honeywell Home Smart Thermostat THX321WF2003W/U
Compared with Honeywell Home T5 Smart Thermostat (RCHT8610WF2006/U): 5 GHz Wi-Fi, Yes vs No.
Conventional heating stages: 2 stages
Honeywell Home T5 Smart Thermostat (RCHT8610WF2006/U)
Compared with Honeywell Home T6 Pro Smart Thermostat (TH6220WF2006/U): heat-pump heating stages, 3 stages vs 2 stages.
Conventional heating stages: 2 stages
Honeywell Home T6 Pro Smart Thermostat (TH6220WF2006/U)
Compared with Honeywell Home T9 Smart Thermostat (RCHT9610WFSW2003/U): 5 GHz Wi-Fi, No vs Yes.
Conventional heating stages: 2 stages
Honeywell Home T9 Smart Thermostat (RCHT9610WFSW2003/U)
Compared with Honeywell Home VisionPRO 8000 WiFi Programmable Thermostat (TH8321WF1001/U): 5 GHz Wi-Fi, Yes vs No.
5 GHz Wi-Fi: Yes
Honeywell Home VisionPRO 8000 WiFi Programmable Thermostat (TH8321WF1001/U)
Compared with Honeywell Home WiFi 9000 Color Touchscreen Thermostat (TH9320WF5003/U): width, 4.94 in vs 4 1/2 in.
Conventional heating stages: 2 stages
Honeywell Home WiFi 9000 Color Touchscreen Thermostat (TH9320WF5003/U)
Compared with Honeywell Home X2S Smart Thermostat (RTH2CWF/U): heat-pump heating stages, 3 stages vs 2 stages.
Conventional heating stages: 2 stages
10 catalog models

How the comparison works

Your choices are compared with each model’s product details. A missing or conflicting value stays unknown and cannot satisfy a choice you select. The starting order helps you browse; it does not rate real-world performance.

Source dates appear with each link below. A source date does not confirm today's price or stock.

Sources for all 10 models
  • Honeywell Home FocusPRO S200 Smart Thermostat (TH2110WF4008/U): Source 1 ↗ · September 26, 2026
  • Honeywell Home Smart Thermostat THX321WF2003W/U: Source 1 ↗ · September 26, 2026
  • Honeywell Home T5 Smart Thermostat (RCHT8610WF2006/U): Source 1 ↗ · September 26, 2026
  • Honeywell Home T6 Pro Smart Thermostat (TH6220WF2006/U): Source 1 ↗ · September 26, 2026
  • Honeywell Home T9 Smart Thermostat (RCHT9610WFSW2003/U): Source 1 ↗ · September 26, 2026
  • Honeywell Home VisionPRO 8000 WiFi Programmable Thermostat (TH8321WF1001/U): Source 1 ↗ · September 26, 2026
  • Honeywell Home WiFi 9000 Color Touchscreen Thermostat (TH9320WF5003/U): Source 1 ↗ · September 26, 2026
  • Honeywell Home X2S Smart Thermostat (RTH2CWF/U): Source 1 ↗ · September 26, 2026
  • Honeywell Home X7S Smart Thermostat (X7SMC4B/U): Source 1 ↗ · September 26, 2026
  • Honeywell Home X8S Smart Thermostat (X8VMC8B/U): Source 1 ↗ · September 26, 2026

Heating stages mean different things for different systems

Honeywell Home's conventional-heating limits span 1 to 3 stages among 9 thermostats with a value; heat-pump heating limits span 1 to 4 stages. The X2S supports 2 conventional heating stages and 2 heat-pump heating stages. Use the field that describes your system rather than transferring a limit between system types.

Conventional cooling has its own stage field. Leave an unrelated system filter open; a missing stage value does not count as support for your system. These comparisons read Honeywell Home's stage ratings without operating the thermostats on HVAC equipment.

Stage support leaves terminals and power to resolve

Supported widths run from 3.7 to 5.24 in, so casing size remains useful after the HVAC comparison. Wi-Fi support also varies: a missing network value is not a yes, and a wider thermostat is not evidence of support for more heating stages.

Use Honeywell Home's compatibility guidance for the exact SKU to resolve terminals, power and accessory needs. Stage counts alone cannot settle installation fit. Follow the wiring instructions and seek qualified help if the existing HVAC connections are unclear.

Before you buy

Does a matching stage count mean it will work with my system?

No. Stage counts alone don't prove your wiring will work: even the FocusPRO S200 covers a 1-heat, 1-cool system on stage counts, yet terminals, the power the thermostat needs and your equipment's wiring are separate, so use Honeywell Home's compatibility guidance for the exact SKU, and bring in an HVAC technician if the wiring is unclear.

How do Wi-Fi support and size differ?

Four say they support 5 GHz Wi-Fi: the X8S, X7S, T9 and THX321WF2003W/U. The T5, T6 Pro, WiFi 9000 and VisionPRO 8000 pages give a 2.4GHz range only, and the X2S and FocusPRO S200 pages don't say. Stated widths run from 3.7 in on the T9 and THX321WF2003W/U to 5.24 in on the X8S and X7S; the T5 page gives none.