{"product_id":"totalhome-tthwp-wired-7-day-programmable-room-thermostat-replaces-honeywell-cm907-cm901","title":"Totalhome TTHWP Wired 7 Day Programmable Room Thermostat - Replaces Honeywell CM907 CM901","description":"\u003cdiv style=\"font-size:16px; font-family:Arial,sans-serif; color:#222; max-width:900px; margin:0 auto; line-height:1.6;\"\u003e\n\n  \u003cp style=\"margin:0 0 18px;\"\u003eThe \u003cstrong\u003eTotalhome TTHWP\u003c\/strong\u003e is a \u003cstrong\u003emains-powered, wired 7-day programmable room thermostat\u003c\/strong\u003e manufactured by Resideo — the team behind the Honeywell Home heating controls range. It is the \u003cstrong\u003edirect replacement for the Honeywell CM907 and CM901\u003c\/strong\u003e wired programmable thermostats, sharing the same wiring connections for a straightforward swap. With \u003cstrong\u003efour programmable heating periods per day\u003c\/strong\u003e, AUTO\/MAN\/OFF operating modes including a \u003cstrong\u003e+1 hour override\u003c\/strong\u003e, a \u003cstrong\u003ebuilt-in service reminder\u003c\/strong\u003e, and full \u003cstrong\u003eBoiler Plus compliance\u003c\/strong\u003e for on\/off boiler control, the TTHWP offers reliable day-to-day heating management through a clear digital display. \u003cstrong\u003eMade in the UK and Europe\u003c\/strong\u003e, backed by a \u003cstrong\u003e3-year warranty\u003c\/strong\u003e.\u003c\/p\u003e\n\n  \u003c!-- Stat strip --\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; gap:12px; margin:0 0 24px;\"\u003e\n    \u003cdiv style=\"flex:1; min-width:120px; background:#008377CF; color:#fff; border-radius:8px; padding:14px 10px; text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:20px; font-weight:700;\"\u003e7-Day\u003c\/div\u003e\n      \u003cdiv style=\"font-size:12px; margin-top:4px;\"\u003eIndependent Schedule\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1; min-width:120px; background:#008377CF; color:#fff; border-radius:8px; padding:14px 10px; text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:20px; font-weight:700;\"\u003e4 Periods\u003c\/div\u003e\n      \u003cdiv style=\"font-size:12px; margin-top:4px;\"\u003ePer Day\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1; min-width:120px; background:#008377CF; color:#fff; border-radius:8px; padding:14px 10px; text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:20px; font-weight:700;\"\u003eWired\u003c\/div\u003e\n      \u003cdiv style=\"font-size:12px; margin-top:4px;\"\u003e230 V Mains Powered\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1; min-width:120px; background:#008377CF; color:#fff; border-radius:8px; padding:14px 10px; text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:20px; font-weight:700;\"\u003eBoiler+\u003c\/div\u003e\n      \u003cdiv style=\"font-size:12px; margin-top:4px;\"\u003eCompliant\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1; min-width:120px; background:#008377CF; color:#fff; border-radius:8px; padding:14px 10px; text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:20px; font-weight:700;\"\u003e3 Years\u003c\/div\u003e\n      \u003cdiv style=\"font-size:12px; margin-top:4px;\"\u003eWarranty\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- Red: installer note --\u003e\n  \u003cdiv style=\"background:#fff5f5; border-left:4px solid #c0392b; border-radius:6px; padding:14px 16px; margin:0 0 16px;\"\u003e\n    \u003cstrong style=\"color:#c0392b;\"\u003e⚠ Installer Notice\u003c\/strong\u003e\u003cbr\u003e\n    The TTHWP operates at \u003cstrong\u003e230 V AC mains voltage\u003c\/strong\u003e and \u003cstrong\u003emust be installed by a competent person\u003c\/strong\u003e. Switch off the mains power at the circuit breaker before accessing wiring. All installation must comply with the current IET Wiring Regulations (BS 7671). When stripping multi-core cable, remove only enough outer insulation to reach the terminals; secure single-core cables together with a cable tie close to the terminal block.\n  \u003c\/div\u003e\n\n  \u003c!-- Amber: wired vs wireless guidance --\u003e\n  \u003cdiv style=\"background:#fffbf0; border-left:4px solid #e67e22; border-radius:6px; padding:14px 16px; margin:0 0 16px;\"\u003e\n    \u003cstrong style=\"color:#e67e22;\"\u003eⓘ Wired or Wireless?\u003c\/strong\u003e\u003cbr\u003e\n    The TTHWP requires a \u003cstrong\u003etwo-wire connection between the thermostat and the boiler\/wiring centre\u003c\/strong\u003e. If running a new cable is not practical, consider the \u003cstrong\u003eTTHWFP wireless version\u003c\/strong\u003e, which uses a radio link to a relay box and requires no cable from the thermostat position.\n  \u003c\/div\u003e\n\n  \u003c!-- Teal: in-box contents --\u003e\n  \u003cdiv style=\"background:#e6f4f3; border-left:4px solid #008377; border-radius:6px; padding:14px 16px; margin:0 0 24px;\"\u003e\n    \u003cstrong style=\"color:#005c54;\"\u003eⓘ What's in the Box\u003c\/strong\u003e\u003cbr\u003e\n    1 × Wired 7-day programmable room thermostat  |  2 × AA LR6 batteries  |  Installation and user guide\n  \u003c\/div\u003e\n\n  \u003c!-- Feature cards --\u003e\n  \u003cdiv style=\"background:#008377CF; color:#fff; padding:10px 16px; border-radius:6px 6px 0 0; font-weight:700; font-size:15px; margin-bottom:0;\"\u003eKey Features\u003c\/div\u003e\n  \u003cdiv style=\"display:grid; grid-template-columns:repeat(auto-fit,minmax(250px,1fr)); gap:14px; background:#e6f4f3; border:1px solid #c8e6e3; border-top:none; border-radius:0 0 6px 6px; padding:16px; margin:0 0 28px;\"\u003e\n\n    \u003cdiv style=\"background:#f0faf9; border:1px solid #c8e6e3; border-radius:6px; padding:16px;\"\u003e\n      \u003cdiv style=\"font-weight:700; color:#008377; border-bottom:2px solid #008377; padding-bottom:6px; margin-bottom:10px;\"\u003e7-Day \/ 4-Period Wired Programming\u003c\/div\u003e\n      \u003cp style=\"margin:0; font-size:14px;\"\u003eSet a \u003cstrong\u003efully independent heating schedule for every day of the week\u003c\/strong\u003e with up to \u003cstrong\u003efour time-and-temperature periods per day\u003c\/strong\u003e (P1–P4). The wired connection provides a \u003cstrong\u003ereliable, interference-free signal\u003c\/strong\u003e to the boiler — making this the preferred choice wherever a cable already runs or can be installed without difficulty.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9; border:1px solid #c8e6e3; border-radius:6px; padding:16px;\"\u003e\n      \u003cdiv style=\"font-weight:700; color:#008377; border-bottom:2px solid #008377; padding-bottom:6px; margin-bottom:10px;\"\u003eAUTO \/ MAN \/ OFF with +1 Hour Override\u003c\/div\u003e\n      \u003cp style=\"margin:0; font-size:14px;\"\u003eSelect \u003cstrong\u003eAUTO\u003c\/strong\u003e to follow the programmed schedule, \u003cstrong\u003eMAN\u003c\/strong\u003e to hold a fixed temperature indefinitely, or \u003cstrong\u003eOFF\u003c\/strong\u003e to switch heating off entirely. In AUTO mode, pressing the temperature buttons applies a \u003cstrong\u003etemporary override until the next scheduled period\u003c\/strong\u003e. The \u003cstrong\u003e+1 hour override\u003c\/strong\u003e extends the current period by one hour at the press of a button — no reprogramming required.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9; border:1px solid #c8e6e3; border-radius:6px; padding:16px;\"\u003e\n      \u003cdiv style=\"font-weight:700; color:#008377; border-bottom:2px solid #008377; padding-bottom:6px; margin-bottom:10px;\"\u003eClear Digital Display\u003c\/div\u003e\n      \u003cp style=\"margin:0; font-size:14px;\"\u003eThe TTHWP features a \u003cstrong\u003edigital display showing current room temperature, set temperature, current time, and operating mode\u003c\/strong\u003e simultaneously. On-screen icons indicate heat demand, programme period, optimisation status, and battery level — giving the user complete visibility of system status at a glance.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9; border:1px solid #c8e6e3; border-radius:6px; padding:16px;\"\u003e\n      \u003cdiv style=\"font-weight:700; color:#008377; border-bottom:2px solid #008377; padding-bottom:6px; margin-bottom:10px;\"\u003eBuilt-in Service Reminder\u003c\/div\u003e\n      \u003cp style=\"margin:0; font-size:14px;\"\u003eAn \u003cstrong\u003eon-screen alert prompts when the boiler is due for its annual service\u003c\/strong\u003e. This is especially useful for landlords and letting agents who must maintain Gas Safety Certificates, and for homeowners who want a built-in maintenance nudge without relying on a separate reminder system.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9; border:1px solid #c8e6e3; border-radius:6px; padding:16px;\"\u003e\n      \u003cdiv style=\"font-weight:700; color:#008377; border-bottom:2px solid #008377; padding-bottom:6px; margin-bottom:10px;\"\u003ePermanent Programme Memory\u003c\/div\u003e\n      \u003cp style=\"margin:0; font-size:14px;\"\u003eThe thermostat's \u003cstrong\u003enon-volatile memory stores the programme and settings indefinitely\u003c\/strong\u003e. Although the display backlight and time-keeping use the AA batteries, the programme itself is retained without power — so a battery change or brief power interruption will \u003cstrong\u003enot erase the heating schedule\u003c\/strong\u003e.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9; border:1px solid #c8e6e3; border-radius:6px; padding:16px;\"\u003e\n      \u003cdiv style=\"font-weight:700; color:#008377; border-bottom:2px solid #008377; padding-bottom:6px; margin-bottom:10px;\"\u003eDirect Replacement for CM907 \/ CM901\u003c\/div\u003e\n      \u003cp style=\"margin:0; font-size:14px;\"\u003eThe TTHWP is a \u003cstrong\u003econfirmed direct replacement for the Honeywell CM907 and CM901\u003c\/strong\u003e wired programmable thermostats, using the same two-wire terminal connections. In most cases the new thermostat can be connected to existing wiring without any modifications — making it a quick, low-cost upgrade for an ageing wired thermostat.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- Spec table --\u003e\n  \u003cdiv style=\"background:#008377CF; color:#fff; padding:10px 16px; border-radius:6px 6px 0 0; font-weight:700; font-size:15px;\"\u003eTechnical Specifications\u003c\/div\u003e\n  \u003ctable style=\"width:100%; border-collapse:collapse; margin:0 0 28px; font-size:14px;\"\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px; font-weight:600; width:42%; border-bottom:1px solid #c8e6e3;\"\u003eManufacturer Part Number\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px; border-bottom:1px solid #c8e6e3;\"\u003eTTHWP\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px; font-weight:600; border-bottom:1px solid #c8e6e3;\"\u003ePower Supply\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px; border-bottom:1px solid #c8e6e3;\"\u003e230 V AC mains\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px; font-weight:600; border-bottom:1px solid #c8e6e3;\"\u003eDisplay Battery (time \/ backlight)\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px; border-bottom:1px solid #c8e6e3;\"\u003e2 × AA LR6 (included)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px; font-weight:600; border-bottom:1px solid #c8e6e3;\"\u003eConnection Type\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px; border-bottom:1px solid #c8e6e3;\"\u003eWired — 2-wire to boiler \/ wiring centre\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px; font-weight:600; border-bottom:1px solid #c8e6e3;\"\u003eProgramming\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px; border-bottom:1px solid #c8e6e3;\"\u003e7-day, up to 4 periods per day\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px; font-weight:600; border-bottom:1px solid #c8e6e3;\"\u003eOperating Modes\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px; border-bottom:1px solid #c8e6e3;\"\u003eAUTO \/ MAN \/ OFF; +1 hour override\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px; font-weight:600; border-bottom:1px solid #c8e6e3;\"\u003eReplaces\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px; border-bottom:1px solid #c8e6e3;\"\u003eHoneywell CM907, CM901\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px; font-weight:600; border-bottom:1px solid #c8e6e3;\"\u003eBoiler Plus Compliance\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px; border-bottom:1px solid #c8e6e3;\"\u003eYes — on\/off boiler control\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px; font-weight:600; border-bottom:1px solid #c8e6e3;\"\u003eCountry of Manufacture\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px; border-bottom:1px solid #c8e6e3;\"\u003eUK and Europe\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px; font-weight:600; border-bottom:1px solid #c8e6e3;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px; border-bottom:1px solid #c8e6e3;\"\u003e3 years\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px; font-weight:600;\"\u003eManufacturer\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eResideo (TotalHome)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003c!-- FAQ --\u003e\n  \u003cdiv style=\"background:#008377CF; color:#fff; padding:10px 16px; border-radius:6px 6px 0 0; font-weight:700; font-size:15px;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n  \u003cdiv style=\"border:1px solid #c8e6e3; border-top:none; border-radius:0 0 6px 6px; margin:0 0 28px; overflow:hidden;\"\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"background:#e6f4f3; padding:12px 16px; font-weight:600; cursor:pointer; list-style:none;\"\u003eCan I replace my Honeywell CM907 with the TTHWP without rewiring?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:12px 16px; font-size:14px;\"\u003eIn most cases, yes. The TTHWP is a \u003cstrong\u003edirect wiring-compatible replacement for the Honeywell CM907 and CM901\u003c\/strong\u003e. The existing two-wire cable typically connects to the same terminal positions. Always check the wiring diagram in the installation guide before connecting, and ensure the mains power is isolated before starting work.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"background:#e6f4f3; padding:12px 16px; font-weight:600; cursor:pointer; list-style:none;\"\u003eWhat is the difference between the TTHWP and the TTHWFP?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:12px 16px; font-size:14px;\"\u003eBoth thermostats share the same 7-day \/ 4-period programming interface and features. The key difference is connectivity: the \u003cstrong\u003eTTHWP is wired\u003c\/strong\u003e, requiring a cable run between the thermostat and the boiler or wiring centre, while the \u003cstrong\u003eTTHWFP is wireless\u003c\/strong\u003e, communicating via radio to a relay box. The wired TTHWP is typically preferred where a cable already exists or can be neatly installed; the wireless TTHWFP suits retrofits where running a new cable is impractical.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"background:#e6f4f3; padding:12px 16px; font-weight:600; cursor:pointer; list-style:none;\"\u003eWhat do the AA batteries power in the wired TTHWP?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:12px 16px; font-size:14px;\"\u003eThe TTHWP draws its \u003cstrong\u003eswitching power from the 230 V mains\u003c\/strong\u003e connection. The \u003cstrong\u003e2 × AA batteries\u003c\/strong\u003e are used to maintain the display backlight and timekeeping functions, and to retain the clock settings during a brief mains power interruption. The heating programme itself is stored in non-volatile memory and is retained even if the batteries are removed.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"background:#e6f4f3; padding:12px 16px; font-weight:600; cursor:pointer; list-style:none;\"\u003eHow do I use the Copy Day feature to speed up programming?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:12px 16px; font-size:14px;\"\u003eWhen setting up the schedule, after programming one day's periods, press the \u003cstrong\u003eCOPY (middle) button instead of confirming\u003c\/strong\u003e. Then select the target day and confirm. The full programme from the source day — all four time and temperature periods — is duplicated to the target day instantly. This is particularly useful for setting the same weekday programme across Monday to Friday, then customising weekend days separately.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary style=\"background:#e6f4f3; padding:12px 16px; font-weight:600; cursor:pointer; list-style:none;\"\u003eIs the TTHWP Boiler Plus compliant?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:12px 16px; font-size:14px;\"\u003eYes. The TTHWP satisfies the \u003cstrong\u003eBoiler Plus on\/off boiler control requirements\u003c\/strong\u003e for England when installed in a system boiler or heat-only boiler system. It provides the time-and-temperature control required by Part L of the Building Regulations. For \u003cstrong\u003ecombi boilers\u003c\/strong\u003e, Boiler Plus additionally requires a weather or load compensator or smart thermostat — the TTHWP covers the time-and-temperature element but does not provide load or weather compensation on its own.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Totalhome by Resideo","offers":[{"title":"Default Title","offer_id":64672096158045,"sku":"TTHWP","price":37.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/tthwp-wired-programmable-thermostat.webp?v=1778598767","url":"https:\/\/qualityheating.co.uk\/products\/totalhome-tthwp-wired-7-day-programmable-room-thermostat-replaces-honeywell-cm907-cm901","provider":"AIZO Quality Heating","version":"1.0","type":"link"}