Roughly two-thirds of UK properties are supplied with hard water, and the calcium and magnesium salts it carries build up inside boilers, heat exchangers and appliances over time — reducing efficiency and shortening working life. The Sentinel SESI 15mm is an electrolytic scale inhibitor that protects the whole property from this build-up, and could save up to £100* a year on typical energy bills as a result.
The unit works via a natural electrolytic process using a zinc electrode, holding hardness salts in solution rather than letting them adhere to pipework and heating elements, and it starts working as soon as it's installed — with no maintenance, batteries, magnets or chemicals involved. It's WRAS approved, independently proven effective, and recommended by the Compliance Guide to Part L1 of the Building Regulations for properties in hard water areas (200ppm or above).
For best results, the unit should be fitted on the rising main after the water meter and any primary filter, so the whole property is protected rather than a single appliance. If it's only protecting one appliance, there should be at least three metres of pipe run between the unit and that appliance.
*Manufacturer's current claim.
Limescale is quietly costly — it makes your boiler work harder, shortens the life of your heating system, and can add noticeably to your energy bills. The SESI15 tackles that at the source, protecting every appliance in your home from one fitting on the rising main. There's nothing to maintain, no batteries or chemicals to top up, and it's WRAS approved, so you're not compromising your drinking water to get the protection. With a 5 year guarantee behind it, it's a fit-once solution that keeps paying you back in lower running costs and fewer breakdowns.
Order the Sentinel SESI 15mm Electrolytic Inhibitor online today.
| Manufacturer | Sentinel |
|---|---|
| Model | SESI15 |
| Outer Body | Copper |
| Anode Material | Bespoke Zinc Alloy |
| Test Regulations | (UK) WRAS Certification 1802068 |
| Connection | 15mm Compression |
| Design Flow | 0-25 l/min (1.5m³/hr) |
| Dimensions (H x Diameter) | 195 x 35mm |
| Weight | 0.35kg |
| Guarantee | 5 Years |
| Product Type | Electrolytic Scale Inhibitor |
