Specifically designed for larger output requirements, these fan-assisted condensing system boilers provide heating only for sealed central heating systems, or open systems, if required.
Features

- 7 year warranty
- Stainless steel heat exchanger
- High efficiency Grundfos pump and hydroblock assembly
- Easy-access dry-change NTCs
- Single electrode
- Combined condensate and pressure relief valve connection
- Zinc plated expansion vessel to prevent corrosion
- E-Tec S boilers come in a choice of three fully-modulating outputs of 20, 30 or 35kW
Detailed Information
Brand new system boiler that features a stainless steel heat exchanger and is part of our popular E-Tec range.
Features
- 7 year warranty
- Stainless steel heat exchanger
- High efficiency Grundfos pump and hydroblock assembly
- Single electrode
- Easy-access dry-change NTCs
- Combined condensate and pressure relief valve connection
- Zinc plated expansion vessel to prevent corrosion
E-Tec S boilers come in a choice of three fully-modulating outputs of 20, 30 or 35kW.
Product Specification
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Model | E-Tec 20S | E-Tec 30S | E-Tec 35S |
Lift weight (kg) | 33.2 | 34.1 | 35.1 |
DHW output (kW) | n/a | n/a | n/a |
CH output (kW) | 26.1 | 29.7 | 32.0 |
Min flow rate l/min | - | - | - |
Max flow rate l/min | - | - | - |
Dimensions (mm) | 712 x 440 x 255 | 712 x 440 x 276 | 712 x 440 x 276 |
Standard warranty | 7 yr | 7 yr | 7 yr |
Warranty with Cyclone Plus magnetic filter added | 8 yr | 8 yr | 8 yr |
Warranty with PremierPack Extra added (includes Cyclone Plus filter) | 10 yr | 10 yr | 10 yr |