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Alpha E-Tec NXS System Boiler 20–35kW
£940.99
Taxes included.
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30-day return policy
Pickup available at F3 Castings Way, Leafbridge, Castings Way, Lincoln
Usually ready in 24 hours
Supplied to order. Order-in boilers are usually with us in 2-4 working days. We confirm availability and the delivery or collection date when you order.
Alpha E-Tec NXS System Boiler 20–35kW
The Alpha E-Tec NXS is a natural gas system boiler with the pump and 8 litre expansion vessel built in, for sealed systems with an unvented or indirect hot water cylinder. Choose the 20, 30 or 35 NXS. It works with Alpha flue kits, the PremierPack Pro jig and Alpha controls.
Key points
- 20, 30 and 35 NXS models, natural gas, 1:6 modulation
- Stainless steel heat exchanger; Grundfos Delta T variable speed pump
- 8 litre expansion vessel built in
- Adjustable heating flow temperature and range-rated output
- Combined expansion relief and condensate drain
- Weather compensation ready; OpenTherm and Alpha BUS controls
- Removable push-fit 60/100 flue connection
Required with this boiler: a flue kit
Alpha supplies this boiler without a flue (only the flue turret is in the box). The Flue kit selector above Add to cart adds the Alpha CD EasyFlue 1000mm telescopic horizontal flue kit (6.2001010) by default, as a separate line in your basket. Pick the Alpha CD vertical flue terminal with 1m flue (6.2000520) instead for a roof exit.
Only choose "I already have this" if you already have a compatible Alpha CD 60/100 flue kit for this boiler. Check maximum flue lengths and terminal positions in the installation manual.
What's included
- 1 x Alpha E-Tec NXS boiler in the output you select, boiler only, as supplied by Alpha
- Flue turret with seals, connection kit with valves, wall mounting bracket, condensate pipe and literature pack, as supplied by Alpha
- No flue included: choose your flue kit with the selector above Add to cart
Specification and price
Dimensions (H x W x D): 712 x 440 x 255mm. Maximum flue length 12m horizontal, 14m vertical (60/100).
| Model | CH output 80/60°C | CH output 50/30°C | GC number | Lift weight | Part number | Our code | Price (inc VAT) |
|---|---|---|---|---|---|---|---|
| E-Tec 20 NXS | 24.0kW | 26.1kW | 41 532 53 | 30.6kg | 3.033117 | PLUMHEAT3746 | £940.99 |
| E-Tec 30 NXS | 28.0kW | 30.4kW | 41 532 54 | 32.8kg | 3.033119 | PLUMHEAT3906 | £1,099.99 |
| E-Tec 35 NXS | 32.0kW | 34.8kW | 41 532 55 | 32.8kg | 3.033120 | PLUMHEAT3907 | £1,149.99 |
Natural gas models. Alpha also makes LPG versions of this range; ask us before ordering if you need LPG.
Recommended add-ons
Tick these in the add-on list above Add to cart, or follow the links:
- Alpha Climatic RF wireless modulating controller (3.022143): modulating Alpha control (in stock). On the NXS, Alpha also specifies its three-way diverter valve kit (6.5500048), which we can order in.
- Alpha 60/100 flue extension 1000mm (6.2001050): for longer horizontal runs (in stock).
- Alpha plume management kit, black (6.2001300): moves the plume away from windows and boundaries (in stock).
- Alpha PremierPack Pro jig with Cyclone Plus filter (3.028421): wall jig with Cyclone Plus filter; adds 3 years to Alpha's warranty.
- Hive V4 heating and hot water kit with hub: smart heating and hot water control.
- EPH A27-HW 2-zone programmer: 2-zone programmer for heating and hot water.
Installation and guarantee
Installation must be by a Gas Safe registered engineer (oil: OFTEC registered) and commissioned with the Benchmark checklist. Manufacturer guarantees require registration after installation and annual servicing; extended guarantee terms are the manufacturer's and may require their approved filter/installer.
Alpha's current UK product page quotes a 7 year warranty as standard. Alpha's PremierPack Pro page says fitting the PremierPack Pro adds 3 years on the E-Tec NXS, so up to 10 years on Alpha's terms.
Delivery and collection
Delivered by pallet/courier (£29.99 per order) or collect free from Leafbridge, Lincoln. Order-in boilers usually 2-4 working days.
Alpha E-Tec NXS product leaflet, Alpha E-Tec NXS installation and servicing instructions (Feb 2023) and Alpha boiler range brochure 2024 are in the PDF downloads at the bottom of this page.
Shop the Alpha boiler range
- Alpha E-Tec NX combi boiler 28–33kW
- Alpha E-Tec Plus NX combi boiler 28–38kW
- Alpha Evoke NX combi boiler 28–33kW
- Alpha E-Tec regular (heat only) boiler 15–25kW
Flues and accessories: EasyFlue telescopic flue kit · vertical flue terminal · flue extension · plume management kit · PremierPack Pro · Climatic RF. Browse all Alpha products, boilers and central heating controls.
Pair it with an unvented hot water cylinder and an expansion vessel.
PDF Downloads
Manufacturer documents for this product.
