Honeywell’s own manual finder works by model number, but most people looking this up don’t have that number handy. If you know roughly which family your thermostat belongs to, jump to it in the table below for its type, its official manual, and the program/reset guide that matches it. If you don’t, the model-number section below shows you where to look.
Find your Honeywell thermostat by series
| Series / model family | Type | Program & reset guide |
|---|---|---|
| RTH2000 / RTH221 (basic digital) | Non-programmable | Reset guide (RTH221B1039) |
| PRO 1000 / PRO 2000 | Non-programmable to basic programmable | Reset your Pro Series thermostat |
| PRO 2000 Vertical (TH2210DV) | Programmable | TH2210DV model guide |
| PRO 3000 / PRO 4000 | Programmable | Reset your Pro Series thermostat |
| FocusPRO 5000 / 6000 (TH5000/TH6000) | Programmable | Fix common Honeywell errors |
| VisionPRO 8000 (TH8000) | Programmable touchscreen | Fix common Honeywell errors |
| RTH6580WF / RTH9585WF (Wi-Fi touchscreen) | Smart Wi-Fi | Connect to WiFi: full setup guide |
| T6 Pro (including Z-Wave) | Smart Wi-Fi | What “Hold” means · Turn off temporary hold |
| Lyric T5 / T6 / Round | Smart Wi-Fi | Battery type and replacement by model |
| T9 / T10 Pro Smart | Smart Wi-Fi, hardwired only (no battery) | Battery-free models section |
For the exact PDF for your specific model number, not just the series, use Honeywell’s own manual finder: it searches by product name or model number and links straight to the official user guide and installation instructions.
Finding your model number
Honeywell doesn’t put a single “model name” on the display. The model number is what you actually need, and it’s in one of these places:
- The ID card that shipped with the thermostat, if you kept it.
- Printed on the thermostat body itself, often on the back or bottom edge.
- On the wall plate, visible once you pull the thermostat off it (most snap-fit models separate from the wall plate by pulling straight out).
The prefix tells you the product family before you even read the full number: TH and RTH cover most Pro Series and FocusPRO programmable models, T prefixes (T4, T5, T6, T9, T10) are the current Wi-Fi/smart line, and CT or RLV show up on older round or vertical non-programmable models.
If your thermostat predates the model you find in the table (an inherited system, a rental, or a home purchase with existing equipment), the same series table still applies: match by the physical layout and button style first, then confirm with the printed model number once you’ve narrowed the search, rather than trying to identify a thermostat purely by its display behavior.
Common questions this hub gets asked
My manual mentions a feature my thermostat doesn’t have. Why? Honeywell reuses manuals across sub-models in the same series (for example, one PDF covering both a 1-heat/1-cool and a 2-heat/2-cool variant of the same body style). Check the model number on your specific unit against the front page of the manual, which usually lists every model number that manual actually covers.
Is there one place to program or reset any Honeywell thermostat? For programming a schedule, see how to program a Honeywell thermostat, which covers both button and touchscreen models. The exact button path still varies by series, so use the series table above to confirm your model type first, or see common Honeywell errors and fixes if you’re troubleshooting rather than programming from scratch.
What if my battery-powered thermostat’s manual doesn’t say what battery it needs? See our battery-by-model guide, which covers battery type and count by series directly, plus which models (T9, T10 Pro) need no battery at all.
This guide is part of our full Honeywell Home Thermostat hub: wiring, setup, and troubleshooting for every current series.
