{"product_id":"hive-smart-trv-15mm-angled-thermostatic-radiator-valve-head-and-body-uk7004561","title":"Hive Smart TRV 15mm Angled Thermostatic Radiator Valve Head and Body UK7004561","description":"\u003cdiv style=\"font-size:16px;font-family:Arial,Helvetica,sans-serif;color:#1a1a1a;max-width:900px;margin:0 auto;line-height:1.6;\"\u003e\n\n  \u003c!-- ── INTRO ─────────────────────────────────────────────────────── --\u003e\n  \u003cp style=\"margin:0 0 18px;\"\u003e\n    The \u003cstrong\u003eHive Smart Thermostatic Radiator Valve (UK7004561)\u003c\/strong\u003e gives you \u003cstrong\u003eroom-by-room heating control\u003c\/strong\u003e directly from the Hive app on your smartphone or tablet — set individual temperatures and schedules for every radiator in the house, stop heating rooms you are not using, and cut energy bills without sacrificing comfort. Supplied as a complete \u003cstrong\u003ehead and body set\u003c\/strong\u003e: the \u003cstrong\u003esmart TRV head with digital display\u003c\/strong\u003e, a \u003cstrong\u003e15mm angled brass valve body\u003c\/strong\u003e, M30 and Danfoss RA adaptors, and 2× AA batteries. Connects to the Hive ecosystem via \u003cstrong\u003eZigbee (2.4GHz)\u003c\/strong\u003e — requires a \u003cstrong\u003eHive Hub or Hub 360\u003c\/strong\u003e (Hub 1 is not supported). Works with or without Hive Active Heating, and is compatible with \u003cstrong\u003eAmazon Alexa, Google Home, iOS and Android\u003c\/strong\u003e. Features \u003cstrong\u003eopen window detection, frost protection, holiday mode, programmable per-room schedules, and manual override\u003c\/strong\u003e. Maximum working pressure \u003cstrong\u003e10 bar\u003c\/strong\u003e; temperature range \u003cstrong\u003e0–40°C\u003c\/strong\u003e. \u003cstrong\u003e1-year manufacturer's guarantee\u003c\/strong\u003e.\n  \u003c\/p\u003e\n\n  \u003c!-- ── AMBER COMPATIBILITY CALLOUT ──────────────────────────────── --\u003e\n  \u003cdiv style=\"border-left:4px solid #e67e22;background:#fef9f0;padding:10px 16px;margin-bottom:14px;border-radius:0 6px 6px 0;\"\u003e\n    \u003cstrong style=\"color:#b7580a;\"\u003e⚠ Hub Requirement — Hub 1 Not Compatible\u003c\/strong\u003e\u003cbr\u003e\n    The Hive Smart TRV requires a \u003cstrong\u003eHive Hub (current generation) or Hive Hub 360\u003c\/strong\u003e. The \u003cstrong\u003eoriginal Hive Hub 1 does not support Hive Radiator Valves\u003c\/strong\u003e and cannot be used. If you currently have Hub 1, you will need to upgrade your hub before adding these valves. Check the base of your hub — Hub 1 has a round body; Hub 360 is cylindrical with a slanted top; the current Hub is rectangular.\n  \u003c\/div\u003e\n\n  \u003c!-- ── TEAL WITH\/WITHOUT ACTIVE HEATING ─────────────────────────── --\u003e\n  \u003cdiv style=\"border-left:4px solid #008377CF;background:#e6f4f3;padding:10px 16px;margin-bottom:22px;border-radius:0 6px 6px 0;\"\u003e\n    \u003cstrong style=\"color:#005c54;\"\u003eℹ With or Without Hive Active Heating — What's the Difference?\u003c\/strong\u003e\u003cbr\u003e\n    \u003cstrong\u003eWithout Hive Active Heating:\u003c\/strong\u003e The TRVs can control flow to individual radiators and adjust temperature room by room — but only while your boiler is already running. They cannot override your main thermostat setting or instruct the boiler to fire.\u003cbr\u003e\u003cbr\u003e\n    \u003cstrong\u003eWith Hive Active Heating\u003c\/strong\u003e (requires a Hive thermostat and receiver): TRVs can communicate with the thermostat to demand heat when a room needs it, automatically overriding the schedule to bring the boiler on. This unlocks the full energy-saving potential of room-by-room control.\n  \u003c\/div\u003e\n\n  \u003c!-- ── STAT STRIP ─────────────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px;\"\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003eZigbee\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003e2.4GHz wireless\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003e0–40°C\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eTemp range\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003e10 bar\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eMax pressure\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003eHead + Body\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eComplete set\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:17px;font-weight:700;\"\u003eAlexa \u0026amp; GH\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eVoice control\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- ── FEATURES GRID ──────────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eFeatures \u0026amp; Benefits\u003c\/div\u003e\n  \u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fill,minmax(255px,1fr));gap:12px;background:#e6f4f3;padding:14px;border-radius:0 0 6px 6px;margin-bottom:22px;\"\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Room-by-Room Temperature Control\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eEach Hive Smart TRV acts as an \u003cstrong\u003eindependent heating zone\u003c\/strong\u003e for its radiator — you set a target temperature in degrees Celsius and the valve opens or closes the flow of hot water to maintain it. \u003cstrong\u003eNo more heating empty rooms\u003c\/strong\u003e: set the spare bedroom to frost protect and the living room to 21°C at 6pm on a schedule that matches how you actually use your home. The \u003cstrong\u003edigital display\u003c\/strong\u003e on the head shows the current room temperature and set point at a glance, without needing to open the app.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Per-Room Schedules via the Hive App\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe Hive app lets you create a fully \u003cstrong\u003eindependent heating schedule for each TRV\u003c\/strong\u003e — not just a single zone programme applied to the whole house. A bedroom can be set to warm up at 6:30am and cool down again by 8am; the kitchen at different times to the lounge; the home office only on weekdays. Schedules are set in half-hour increments and can be adjusted any time from anywhere with the app. \u003cstrong\u003eChanges take effect immediately\u003c\/strong\u003e — no need to be at home.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Open Window Detection — Frost \u0026amp; Holiday Mode\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003e\n\u003cstrong\u003eOpen window detection\u003c\/strong\u003e senses a rapid drop in room temperature — indicating a window has been opened — and automatically reduces the set point to avoid heating the outside. The valve resumes normal operation once the temperature stabilises. \u003cstrong\u003eFrost protection mode\u003c\/strong\u003e keeps the room at a minimum safe temperature (typically 7°C) to prevent pipework freezing when a room is unoccupied in cold weather. \u003cstrong\u003eHoliday mode\u003c\/strong\u003e applies a low hold temperature across all TRVs for the duration of your absence, resuming normal schedules on your return date.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Zigbee Wireless — Hive Hub or Hub 360 Required\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe Hive Smart TRV uses \u003cstrong\u003eZigbee protocol\u003c\/strong\u003e on the 2.4GHz band to communicate with the Hive Hub. Zigbee is a \u003cstrong\u003emesh networking protocol\u003c\/strong\u003e — each TRV in your home also acts as a relay for other TRVs, extending the network range naturally as you add more valves. This makes it significantly more reliable than Wi-Fi-based smart valves in larger or multi-floor properties. Each Hive Hub supports multiple TRVs across the home. A \u003cstrong\u003estable internet connection is required\u003c\/strong\u003e for full cloud features, but local control is maintained if internet connectivity is temporarily lost.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Alexa, Google Home \u0026amp; Manual Override\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eControl via voice with \u003cstrong\u003eAmazon Alexa or Google Home\u003c\/strong\u003e: say \"Alexa, set the bedroom to 20 degrees\" or \"Hey Google, what is the bedroom temperature?\" without unlocking your phone. The \u003cstrong\u003emanual override\u003c\/strong\u003e on the head itself lets anyone in the room adjust the temperature by pressing the physical buttons — essential for guests or family members who do not use the app. Manual adjustments respect the next scheduled change, reverting automatically to the programme without requiring a phone to undo the override.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Complete Head \u0026amp; Body Set — Self-Install\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThis pack includes everything needed for a complete installation: the \u003cstrong\u003esmart TRV head, 15mm angled brass valve body, M30 and Danfoss RA adaptors, 2× AA batteries, adaptor guide and user guide\u003c\/strong\u003e. If your radiators \u003cstrong\u003ealready have TRV bodies fitted\u003c\/strong\u003e, you only need the head (sold separately as UK7004240). If you are replacing a conventional TRV head and body from scratch, this is the complete set. Installation is \u003cstrong\u003eself-install friendly\u003c\/strong\u003e if you are replacing an existing TRV body — isolate the radiator, drain, swap the valve, screw on the head, and pair via the app. A plumber should fit the valve body if replacing a lockshield or fitting to a radiator with no existing TRV.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- ── SPEC TABLE ─────────────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eTechnical Specifications — Hive Smart TRV UK7004561\u003c\/div\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;margin-bottom:22px;font-size:14px;\"\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;width:44%;border-bottom:1px solid #c8e6e3;\"\u003eBrand \/ MPN\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eHive — \u003cstrong\u003eUK7004561\u003c\/strong\u003e (Model: TRV003)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eProduct Type\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eSmart TRV head and body (complete set)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eConnection — Inlet\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e15mm BSP — angled\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eConnection — Outlet\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e½\" BSP\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eValve Body Material\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eBrass\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eHead Material \/ Colour\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003ePlastic — white \/ brushed silver; round head\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eStyle\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eModern — angled\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eWireless Protocol\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\n\u003cstrong\u003eZigbee\u003c\/strong\u003e — 2.4GHz, single-band\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eHub Required\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\n\u003cstrong\u003eHive Hub or Hub 360\u003c\/strong\u003e — Hub 1 not supported\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eSmart Compatibility\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eAmazon Alexa · Google Home · Hive app (iOS \u0026amp; Android)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eTemperature Range\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e0°C – 40°C\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMax. Working Pressure\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e10 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003ePower\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e2× AA batteries (supplied)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDisplay\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eDigital — shows current room temperature and set point\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDimensions (H × W × D)\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e93 × 63 × 81 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eConnectivity\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eLocal control + cloud features (internet required for cloud)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eIn the Box\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eSmart TRV head · 15mm angled valve body · M30 adaptor · Danfoss RA adaptor · 2× AA batteries · adaptor guide · user guide\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;\"\u003e\n\u003cstrong\u003e1 year\u003c\/strong\u003e manufacturer's guarantee\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;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n  \u003cdiv style=\"border:1px solid #c8e6e3;border-top:none;border-radius:0 0 6px 6px;margin-bottom:8px;\"\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#f0faf9;\"\u003eDo I need Hive Active Heating to use these TRVs?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eNo — the Hive Smart TRVs work \u003cstrong\u003ewithout Hive Active Heating\u003c\/strong\u003e, but with reduced functionality. Without it, the TRVs can open and close individual radiators and maintain a set temperature room by room — but only while your boiler is already running from your existing thermostat. They \u003cstrong\u003ecannot override your main thermostat or instruct the boiler to fire\u003c\/strong\u003e on their own. If you want the TRVs to be able to turn the boiler on when a room needs heat, you need the full Hive Active Heating system (a Hive thermostat and receiver), which allows the TRVs to communicate demand to the boiler. For most installations, adding Hive Active Heating alongside TRVs gives the greatest energy saving.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#fff;\"\u003eCan I install this myself without a plumber?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eIf your radiators \u003cstrong\u003ealready have thermostatic radiator valve bodies fitted\u003c\/strong\u003e (i.e. there is already a TRV head on the radiator), the Hive head can be a straightforward self-install — unscrew the existing head and replace it with the Hive head using the correct adaptor. No draining, no plumbing tools required. The Hive app guides you through adaptor selection and pairing step by step. If you need to \u003cstrong\u003ereplace the valve body\u003c\/strong\u003e at the same time (for example, you currently have a lockshield, or the existing body is a different connection style), you will need to drain down the radiator and fit the new body — this is standard plumbing work, but most homeowners will want a plumber for it. If in doubt, ask a plumber to fit the valve body and then install the head yourself.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#f0faf9;\"\u003eWhy does the valve take 24 hours to calibrate after installation?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eOn first installation, the Hive TRV needs to \u003cstrong\u003elearn the characteristics of your specific radiator\u003c\/strong\u003e — how quickly it heats up, how much the valve needs to open or close to achieve a given temperature change, and where the mechanical stops of the valve body are. This calibration process takes \u003cstrong\u003eup to 24 hours and requires your heating to be on\u003c\/strong\u003e during this period so the valve can cycle through its range with hot water flowing. During calibration the radiator may heat up more slowly than usual or behave unpredictably — this is normal. After calibration completes (visible in the app), the valve will regulate temperature accurately.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#fff;\"\u003eDo I need one TRV per radiator, or just some radiators?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eYou do not need to fit a Hive TRV on every radiator to benefit from the system — you can start with the rooms where individual control matters most, such as \u003cstrong\u003ebedrooms, a home office, or a rarely-used spare room\u003c\/strong\u003e. Radiators without a Hive TRV continue to work as normal, controlled by your main thermostat and the physical dial on the valve. However, for the best energy savings, fitting TRVs in all rooms allows the system to actively prevent heating unoccupied spaces. One important note: it is good practice to leave at least one radiator on the system \u003cstrong\u003ewithout a TRV\u003c\/strong\u003e (or with its TRV fully open) as a bypass, to prevent the circulating pump working against closed valves if all rooms reach their target temperature simultaneously.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#f0faf9;\"\u003eHow long do the batteries last, and what type do I need?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eThe Hive Smart TRV is powered by \u003cstrong\u003e2× AA batteries (supplied in the box)\u003c\/strong\u003e. Battery life depends on usage — how frequently the valve opens and closes, how often the display is activated, and ambient temperature — but is typically \u003cstrong\u003e12–18 months of normal use\u003c\/strong\u003e. The app will notify you when the battery level is low, giving you time to replace them before the valve loses communication. Standard alkaline AA batteries are used; rechargeable NiMH AA batteries will also work but may give a slightly shorter run time due to their lower nominal voltage (1.2V vs 1.5V for alkaline). Batteries can be replaced without removing the valve head from the radiator.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#fff;\"\u003eIs this the same as the head-only version, and which do I need?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eHive sells two versions: this \u003cstrong\u003ehead and body pack (UK7004561)\u003c\/strong\u003e, and a \u003cstrong\u003ehead-only pack (UK7004240)\u003c\/strong\u003e. The head-only pack is for radiators that \u003cstrong\u003ealready have a compatible thermostatic radiator valve body\u003c\/strong\u003e fitted — you simply remove the existing TRV head and replace it with the Hive head using the included adaptors (M30 or Danfoss RA). The head and body pack (this product) is for installations where you are \u003cstrong\u003efitting a new TRV from scratch\u003c\/strong\u003e, replacing a lockshield, or where the existing valve body is incompatible. If you are unsure whether your existing valve body is compatible, the Hive adaptor guide (included in both packs) covers the most common valve body types. M30 and Danfoss RA are the two most common UK fittings and both adaptors are included.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hive","offers":[{"title":"Default Title","offer_id":64186890617181,"sku":"UK7004561","price":73.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/uk7004561-Hive15mmAngledSmartThermostaticRadiatorValve_HeadandBody.jpg?v=1776182222","url":"https:\/\/qualityheating.co.uk\/products\/hive-smart-trv-15mm-angled-thermostatic-radiator-valve-head-and-body-uk7004561","provider":"AIZO Quality Heating","version":"1.0","type":"link"}