Heating & Hot Water

The EPH Controls A27-HW is a 2 zone programmer designed for efficient control of central heating systems. Featuring 24-hour, 5/2-day and 7-day programming options, it offers flexible scheduling and reliable performance for managing multiple heating zones with ease.

Control your central heating with the EPH Controls A17 1 Zone Timeswitch. Featuring 24-hour, 5/2 day and 7-day programming modes, this heating programmer offers flexible scheduling for boilers, helping improve comfort and energy efficiency in domestic heating systems.

The EPH Controls V222P 22mm 2-Port Motorised Zone Valve provides reliable control of water flow in central heating and hot water systems. Featuring a durable brass valve body, 230V AC actuator and 22mm compression connections, it is suitable for domestic and light commercial heating installations.

The V222P features a built-in auxiliary switch for boiler or pump control, while its compact actuator design allows for straightforward installation and maintenance.

Delivery: Tracked 48 £2.99 (2–3 working days) or Tracked 24 £4.00 (1–2 working days). Free collection from our Wellingborough branch.

Fernox Cleaner F3 is a universal, pH-neutral central heating system cleaner designed to remove sludge, limescale and other debris from domestic heating systems.

It is suitable for both new and existing central heating systems and can be used as part of a system clean or prior to installing a new boiler. F3 is non-foaming and compatible with all common heating system materials, including aluminium.

One 500ml bottle treats up to 130 litres of system water, equivalent to approximately 16 radiators or 250m² of underfloor heating.

Fernox Leak Sealer F4 is an internal leak sealer designed for use in central heating systems to seal small, inaccessible leaks and weeps that can cause pressure loss and boiler breakdowns.

Once added to the heating system, F4 circulates through the system and seeks out areas where oxygen is entering through microscopic leaks. It then forms a polymer seal around the affected area, helping to stop the leak without the need to drain down the entire system.

Fernox F4 is effective within 1 to 24 hours and is designed to remain permanently in the system. It is compatible with all common heating system metals and materials, including aluminium, and is formulated not to cause blockages or restrictions in vulnerable components such as pumps, air vents and heat exchangers.

One 500ml bottle treats up to 130 litres of system water, equivalent to up to 16 radiators or 250m² of underfloor heating.

Fernox Protector F1 500ml is a high-performance central heating inhibitor designed to provide long-term protection against corrosion and limescale formation in domestic heating systems.

It combines multiple corrosion and scale inhibitors to protect the metals within the heating system and help prevent the formation of damaging sludge and deposits. Enhanced pH buffering helps maintain system water between pH 6.5 and 8.5, the optimum range for protecting mixed-metal heating systems.

One 500ml bottle treats a heating system of up to 130 litres, 16 radiators or 250m² of underfloor heating. Protector F1 is suitable for all types of boilers, radiators and pipework systems and is compatible with commonly used heating system materials, including aluminium.

For best results, contaminated systems should be cleaned and flushed before adding Protector F1. Fernox recommends checking inhibitor concentration annually as part of routine boiler or heating system servicing.

The Fernox TF1 Omega Installer Pack 22mm With Valves is a complete solution for cleaning, protecting and guarding domestic central heating systems.

The pack combines the Fernox TF1 Omega 22mm Filter with valves, Fernox Cleaner F3 500ml and Fernox Protector F1 500ml, giving installers the key products needed to clean an existing system and provide long-term protection against corrosion and limescale.

The TF1 Omega is a precision-engineered, sealed in-line system filter made from nickel-plated forged brass. It combines a powerful neodymium magnet with Hydronic Particle Separation technology to capture both magnetic and non-magnetic contaminants from central heating system water.

The filter is designed to minimise pressure loss while maintaining high collection efficiency. It can be cleaned without dismantling the filter, with collected debris discharged through the drain valve. Fernox recommends installing it on the return pipe to the boiler.

The pack is backed by a 25-year warranty on the TF1 Omega filter.

The GENBRA BFRVS‑15V 15 mm Voyager straight radiator valve is a robust, chrome‑plated brass valve designed for effortless connection of your radiator to 15 mm central‑heating pipework. Its compact straight‑through design and standard 15 mm inlet make it simple to install, while the durable finish ensures long‑lasting performance and reliable manual control for home radiators.

The Honeywell Home 22 mm 2‑Port Zone Valve (V4043H1056/U) is a high‑quality motorised valve designed for domestic heating systems. With 22 mm compression connections, spring‑return action, manual lever for filling/draining and an auxiliary end switch for boiler or pump control, it offers dependable performance and minimal power consumption.

The Honeywell CM707 7 Day Programmable Room Thermostat is a discontinued wired thermostat designed to provide programmable temperature control for domestic heating systems. It allows different heating temperatures and times to be programmed throughout the week, helping to provide convenient and efficient control of your heating.

Please note: The Honeywell CM707 has been discontinued. The recommended replacement is the Honeywell Home T3H110A0066 programmable thermostat.

The Honeywell Home 10‑Way Junction Box (42002116‑002) is a robust ABS wiring centre designed for UK heating system installations. With ten clearly numbered terminals, accommodation for up to 15 A and 12 knock‑out entries for cable routing, this universal junction box ensures clean, safe S‑Plan and Y‑Plan wiring setups.

The Honeywell Home 2 Port Zone Valve 28 mm V4043H1106/U is a precision‑engineered motorised valve designed for domestic and light commercial heating systems. With a 28 mm compression connection, spring‑return action, auxiliary end switch to control boiler or pump circuits, and minimal power consumption for quieter operation, it’s the ideal upgrade to enhance system efficiency.

The Honeywell Home L641A1039 Cylinder Thermostat is a robust, surface‑mounted unit designed for hot water cylinders. Compatible with uninsulated or foam‑lagged tanks, it offers simple dial adjustment, easy mounting with included straps/hooks and reliable switching of boilers, pumps or zone valves.

The Honeywell Home T6360B1028 Room Thermostat is a mains‑voltage room thermostat designed for domestic wet central heating systems, offering accurate temperature control with a dual diaphragm sensor, heat anticipator and mounting options for surface or conduit box installation.

The Honeywell Home ST9100C1006 7‑Day Programmer is a reliable single‑channel time switch designed to manage your central heating zone or combi boiler. With up to three on/off periods per day, a large backlit “Line of Text” display, automatic summer/winter time change and non‑volatile memory that keeps your settings, it’s an ideal upgrade for better comfort and energy efficiency.

The Honeywell Home ST9400C1000 is a programmable heating controller providing 7-day control of two heating zones: central heating and hot water. It allows separate heating and hot water programmes with up to three on/off periods per day, making it easy to schedule your heating around your routine.

The LCD display provides clear information and straightforward programming, while the holiday mode allows temporary changes to your heating schedule when you're away.

The Honeywell Home T3R Wireless Programmable Thermostat provides convenient control of central heating without the need for a wired connection between the thermostat and receiver. Designed for compatible heating systems, it offers flexible 7-day or 5/2-day programming and an Optimum Start function to help heat your home at the required time.

The LCD display provides clear temperature and programme information, while the wireless design allows flexible positioning within the home.

The Honeywell Home T4360A1009 Frost Stat is a mains‑voltage frost thermostat designed to safeguard boilers, pipework and the building fabric against frost damage. With a fixed 3–20 °C set‑point range, dual‑diaphragm sensing and a tamper‑resistant cover, it’s perfect for cold spaces like lofts, garages or floor voids.

The Honeywell Home V4073A1088/U 28 mm Mid‑Position Mid‑Position Valve is a robust 28 mm motorised 3‑port valve built to manage flow in domestic central heating systems where both the radiator and hot‑water cylinder circuits are pumped. With compression connections, spring‑return action, manual lever for filling/draining and removable power‑head without system drain‑down, it’s designed to simplify installation and improve system performance.

The Honeywell Home T4H110A1021 is a wired wall‑mounted thermostat that delivers precise time and temperature control for domestic heating systems. Compatible with 24‑230 V on/off boilers and zone valves, it supports 5‑2‑day (and 7‑day) scheduling, has intuitive programming, frost‑protection and a large backlit display - ideal for UK homes seeking dependable, energy‑efficient heating control.