Explore the full range of Honeywell products on Plumbco, featuring high-quality thermostats, zone valves, TRVs, programmers, and heating controls. Perfect for modern UK central heating systems, Honeywell products provide reliable performance, energy efficiency, and easy installation for both domestic and commercial projects.
The Honeywell VT15‑EG 15 mm Angled TRV is a precision thermostatic radiator valve designed to regulate individual radiator output in wet central‑heating systems. Featuring a 15 mm angled body, reversible flow, frost‑setting, and easy‑grip head, this valve delivers enhanced comfort and efficiency from one trusted product.
The Honeywell Home V4043H1080/U 1″ 2‑Port Motorised Zone Valve is a premium 1 inch (28 mm equivalent) motorised valve engineered for domestic and light commercial heating systems. Featuring a spring‑return action, manual lever for system filling/draining, and replaceable power‑head without draining the system, it ensures quiet, efficient flow control and simple maintenance.
The Honeywell Valencia VT200‑15A 15 mm Angled TRV is a premium thermostatic radiator valve designed for modern UK heating systems. With its 15 mm angled body, bidirectional flow design and integrated radiator balancing insert, it enables precise room‑by‑room temperature control and efficient energy usage.
The Honeywell Valencia VTL120‑15S 15 mm Straight TRV + Lockshield Pack offers a powerful solution for radiator temperature regulation in one compact pack. Featuring a 15 mm straight body, integrated balance insert and Honeywell reliability, this TRV & lockshield set enhances room-by-room comfort and contributes to reduced heating bills by allowing precise radiator control.
The Honeywell Valencia VTL120 15mm Angled TRV & Lockshield Pack offers precise room‑by‑room heating control for modern homes. With its 15 mm angled design it fits seamlessly into existing radiator installations, incorporates a liquid sensor for stability, an energy‑saving setting to reduce heating bills, and a bi‑directional flow body for flexible installation.
The Honeywell Valencia VHL120‑15A‑DP Manual Valve & Lockshield is a premium 15 mm angled radiator valve set from the Valencia range, combining a manual on/off valve for local room control and a matching lockshield for balancing flow. Designed for UK heating installations, it features a durable brass body, angled orientation for snug radiator connections and includes drain‑off tail for easy maintenance.
The Honeywell Valencia VTL120‑15A‑DP 15 mm Angled TRV & Lockshield Pack combines a precision 15 mm angled thermostatic radiator valve with a matching lockshield, designed for modern two‑pipe central heating systems. With a bidirectional flow body, built‑in radiator balancing insert and frost‑setting capability, it delivers reliable room control and increased energy efficiency in one trade‑ready pack.
*DISCONTINUED - New model - Honeywell DT4 Room Thermostat Wired On/Off White DT40WT20*
The Honeywell DT90 Digital Stat DT90E1012 offers advanced temperature control for your heating system with its energy-efficient, easy-to-use digital interface. Designed for both residential and commercial applications, this thermostat provides precise and reliable temperature management to enhance comfort and save energy.
The Honeywell Home DT40WT20 Wired Room Thermostat is a white‑finish, wall‑mounted thermostat offering simple on/off control for domestic heating systems, compatible with 24‑230 V boilers and heat pumps. Its slim profile, easy‑read LED display and built‑in eco mode make it a reliable choice for both traditional and modern UK homes.
The Honeywell Home T6R‑HW Wireless Smart Hot Water Control (Y6H920RW4026) delivers intelligent remote management of both heating and stored hot water systems. With WiFi connectivity, app and voice‑assistant support, separate hot‑water scheduling and geofencing‑enabled comfort, it’s designed to boost efficiency and simplify everyday use.
The Honeywell Home DU144 22 mm Straight Auto Bypass Valve (DU144A1001) is a robust automatic bypass valve designed to ensure minimum boiler flow, maintain pressure balance and reduce noise in closed‑loop heating systems. With 22mm compression fittings, wide differential pressure range (0.1–0.6 bar) and brass construction, it offers a professional solution for energy‑efficient central heating installations.
The Honeywell Home DU145‑3/4B 22 mm Differential Bypass Valve ensures consistent boiler flow and stable system pressure by automatically regulating differential pressure in heating circuits. With 22 mm compression connections, a wide differential pressure range (0.1‑0.6 bar) and high flow capacity, it is ideal for modern central heating systems requiring reliable bypass control.
The Honeywell Home Sundial Wiring Centre 42005748‑001 is a dedicated junction box designed for domestic central‑heating control systems. With 37 clearly labelled single‑wire terminals, a fire‑retardant PC‑ABS enclosure and support for S‑Plan, Y‑Plan and C‑Plan configurations, it streamlines installations and helps reduce wiring errors.
The Honeywell Home Actuator for V4043H (40003916‑001/U) is a genuine replacement powerhead designed to fit the V4043H series two‑port motorised zone valves. Compatible with UK 230 V systems, it features a manual lever, spring‑return mechanism and quick‑swap fitment without full system drainage — ideal for fast, professional repairs.
The Honeywell Valencia VTL120‑15A TRV + LS 15mm Angled pack combines a premium 15mm angled thermostatic radiator valve and matching lockshield from Honeywell. Designed for easy, flexible installation with bi‑directional flow and integrated balancing insert, it delivers precise room‑by‑room temperature control and enhances heating system efficiency.
The Honeywell Home Actuator for V4073A (stock code 117053 / manufacturer’s 40003916‑003/U) is a direct‑replacement motorised actuator designed for use with Honeywell V4073A mid‑position three‑port valves. It provides smooth operation, quiet performance and a hassle‑free installation - ideal for trade professionals and maintenance tasks requiring a quick repair without draining down the system.
The Honeywell Home High Limit Pipe Thermostat (L641B1012) is a robust surface‑contact pipe thermostat designed for pumped central‑heating systems. Featuring a bi‑metal strip sensor and a tamper‑proof adjustment option, it functions as a high‑limit safeguard for water temperature control in boiler loops and cylinder circuits.
The Honeywell Home 22 mm 3‑Port Diverter Valve (V4044C1288/U) is a high‑quality motorised valve designed for domestic fully‑pumped central heating systems. Its 22 mm compression connections, two‑position operation and spring‑return mechanism allow seamless switching between heating and hot‑water services for enhanced system flexibility and reliability.
The Honeywell Low‑Limit Pipe Thermostat L641B1004 is a compact, surface‑mounted thermostat designed for pumped central‑heating systems, offering a temperature range of approx. 10 °C–40 °C to protect pipework against under‑heating or frost. Its bi‑metal strip sensor and tamper‑proof adjustment make it a reliable choice for installers needing effective low‑limit control.
The Honeywell Valencia VTL120‑10A 10mm Angled TRV & Lockshield Pack combines a precision 10mm angled thermostatic radiator valve with matching lockshield, designed for modern UK heating systems. Its liquid sensor ensures consistent temperature control, the bi‑directional flow body suits horizontal or vertical installations, and the energy‑saving setting helps reduce heating bills.