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Alpha E-Tec NX Combi Boiler 28–33kW
£799.99
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 NX Combi Boiler 28–33kW
The Alpha E-Tec NX is a compact natural gas combi boiler with a stainless steel heat exchanger, for flats and small to medium homes with one bathroom. Choose 28kW or 33kW. It is OpenTherm and Alpha BUS compatible and works with Alpha flue kits, filters and controls.
Key points
- 28kW and 33kW domestic hot water outputs, natural gas
- Stainless steel heat exchanger in a lightweight thermoplastic moulding
- Grundfos hydroblock with Delta T variable speed pump
- 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 for horizontal or vertical flues
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 NX 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 268mm (Alpha 2024 brochure). Maximum flue length 12m horizontal, 14m vertical (60/100).
| Model | DHW output | Max CH output | DHW flow (35°C rise) | Lift weight | Part number | Our code | Price (inc VAT) |
|---|---|---|---|---|---|---|---|
| E-Tec 28 NX | 28kW | 26.1kW | 12.1 l/min | 31.2kg | 3.033112 | PLUMHEAT3901 | £799.99 |
| E-Tec 33 NX | 32kW | 30.4kW | 14.1 l/min | 33.4kg | 3.033113 | PLUMHEAT3902 | £849.99 |
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 OpenTherm control made for Alpha boilers (in stock).
- 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 magnetic filter; adds 2 years to Alpha's warranty.
- EPH CP4i OpenTherm combi pack: wireless OpenTherm thermostat pack for combis.
- Hive Hubless V4 OpenTherm smart thermostat: smart app control.
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 2 years, so up to 9 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 NX product leaflet, Alpha E-Tec NX 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 Plus NX combi boiler 28–38kW
- Alpha Evoke NX combi boiler 28–33kW
- Alpha E-Tec NXS system boiler 20–35kW
- 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.
