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Compact Low-Height Design: 400 mm tall radiator fits beneath windows and low walls without losing heating power.
True Wet-System Heating: Sealed, water-filled core delivers radiant warmth similar to a central heating system.
Smart RFC Control: Wireless thermostat with 7-day program, adaptive start, and frost protection.
Easy Installation: Supplied wall brackets and simple 230 V connection — no plumbing or maintenance needed.
Energy Efficient Performance: 1.625 kW output, Lot 20 compliant, designed for low running costs.
Durable British Build: Handmade in the UK, IP44 rated for bathroom safety and long service life.
Warranty & Support: Covered by a 2-year manufacturer’s warranty.
The RadiWarm HE4140 is a low-height, water-filled electric radiator engineered for spaces where standard wall-mounted heaters are too tall. Standing at just 400 mm high with a 1400 mm width, it delivers full-sized performance in a compact, versatile form — perfect for conservatories, bay windows, and low-wall installations.
Each unit is pre-filled with treated water and permanently sealed, eliminating the need for plumbing, bleeding, or maintenance. Its built-in micro-boiler circulates water to produce a natural radiant heat, replicating the comfort of traditional central heating — all powered directly from electricity.
The HE4140 pairs with the RadiWarm RFC wireless controller, providing 7-day scheduling, adaptive start, and frost protection. Once connected, it delivers precise temperature management and energy efficiency that meets Lot 20 standards.
The radiator mounts easily to supplied wall brackets and plugs into a 230 V socket or fused spur. Rated IP44, it’s suitable for bathrooms (Zone 2 and Zone 3) and damp environments. The sealed design ensures quiet, maintenance-free operation throughout its life cycle.
Manufactured in the UK with a robust 1.625 kW output and 8.5 A current draw, the HE4140 provides efficient, dependable performance with zero servicing required. Each unit comes backed by a 2-year manufacturer’s warranty for long-term peace of mind.
Buy the RadiWarm HE4140 1.625 kW Low-Height Electric Radiator from NHS — trusted heating specialists with expert advice, rapid UK delivery, and our Price Match Promise.
See More Like This: Radiators & Space Heaters & Heating Equipment
Model: RadiWarm HE4140
Output: 1.625 kW
Current: 8.5 A
Supply Voltage: 230–240 V AC 50 Hz
Protection Rating: IP44
Construction: Sealed, water-filled micro-boiler radiator
Installation: Wall-mounted using supplied brackets
Control System: Wireless RFC 7-day programmable thermostat
Mounting Height: 150 mm minimum from floor
Dimensions (H × W): 400 × 1400 mm
Weight: 44 kg
Efficiency Standard: Lot 20 Compliant
Origin: Manufactured in the UK
Warranty: 2 years manufacturer’s warranty
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Whether you need a long-term, short-term, or temporary climate solution, sometimes it can help if you can break the costs down, especially if the situation is unexpected or an emergency.
To help our customers and make climate control and air quality equipment more accessible, we've worked with PayPal to provide a way to spread the cost with PayPal Pay in 3. You can use Pay in 3 for eligible shopping cart amounts between £30.00 to £2,000.00. Terms apply.
