Ariston E-Combi ONE 24 kW LPG Condensing Combi Boiler with Vertical Flue Kit

Ariston E-Combi ONE 24 LPG vertical flue kit

The Ariston E-Combi ONE 24 LPG is a compact wall-hung LPG condensing combi boiler supplied with a vertical flue kit, designed to provide central heating and domestic hot water from a single appliance.

The 24 LPG model has a maximum central-heating output of 21 kW and a domestic hot-water flow rate of 10.6 L/min at ΔT 35°C. Ariston’s LPG technical documentation also specifies an A/A ErP rating, XL domestic hot-water load profile, 93% seasonal space-heating efficiency and 85% water-heating efficiency.

This package is designed for installations requiring a vertical flue arrangement, subject to the manufacturer’s permitted flue configuration, installation instructions and applicable local regulations.

What’s Included

• Ariston E-Combi ONE 24 LPG condensing combi boiler
• Compatible Ariston vertical flue kit
• Vertical flue components according to the supplied package
• Manufacturer documentation where supplied
• LPG configuration/components according to the exact product package

Always check the package contents before installation, particularly where a starter, adaptor or additional flue component is required for the specific installation.

Ariston E-Combi ONE 24 LPG Specifications

These values are from Ariston’s E-Combi ONE LPG 24 technical documentation.

Vertical Flue Kit

The key difference between this product and the horizontal-flue version is the vertical flue configuration.

Ariston’s installation documentation identifies a vertical flue kit using an 80/125 mm system, with a weatherproof terminal designed for suitable roof installations. The documentation states that the vertical terminal can be used with either a flat or pitched roof when installed using the approved configuration.

The actual flue route must be designed according to the manufacturer’s permitted configuration.

Flue length, terminal location, roof penetration, elbows, extensions, supports and clearances must all be checked before installation.

Designed for LPG Heating

The E-Combi ONE LPG 24 is designed for properties using liquefied petroleum gas (LPG) rather than mains natural gas.

This makes it relevant for applications where an LPG heating system is required, including:

• Residential properties
• Rural properties
• Homes without mains natural gas
• Holiday homes
• Leisure accommodation
• Selected park-home applications
• LPG boiler replacement projects
• Heating and hot-water installations requiring a combi boiler

The suitability of the boiler must be confirmed against the property’s heating demand, LPG supply, water pressure and installation requirements.

XtraTech Stainless Steel Heat Exchanger

The E-Combi ONE uses Ariston’s XtraTech stainless steel heat exchanger technology.

The heat exchanger is one of the key components of the boiler’s heating system and is designed as part of Ariston’s ONE-series platform.

For customers searching specifically for an Ariston LPG boiler with a stainless steel heat exchanger, the E-Combi ONE 24 LPG is therefore a relevant product option.

Central Heating Performance

The LPG 24 model has a maximum central-heating output of 21 kW according to Ariston’s LPG product data.

The boiler supports heating temperatures from 35°C to 82°C in the high-temperature range and 20°C to 45°C in the low-temperature range.

Actual system performance depends on:

• Building heat loss
• Radiator or underfloor-heating design
• System controls
• Flow and return temperatures
• Pipework
• Installation configuration
• Weather and operating conditions

The boiler should therefore be correctly sized by a qualified heating professional.

Domestic Hot Water Performance

The E-Combi ONE 24 LPG provides domestic hot water directly through the combi boiler.

Ariston specifies a 10.6 L/min DHW flow rate at a 35°C temperature rise for the LPG 24 model. The appliance has an XL domestic-hot-water tapping profile.

Actual flow at the outlets will depend on incoming mains-water temperature, pressure, pipework and simultaneous demand.

A/A ErP Energy Rating

The E-Combi ONE 24 LPG has an A rating for both heating and domestic hot water under the stated ErP product data. Ariston’s LPG documentation gives a seasonal space-heating efficiency of 93% and water-heating efficiency of 85%.

These published efficiency figures should not be interpreted as a guarantee of a particular customer’s energy consumption or heating cost.

Auto and Comfort Functions

The E-Combi ONE incorporates features designed to simplify operation and control.

These include:

• Auto function
• Comfort function
• High-efficiency pump
• Electronic controls
• Backlit display
• 1:7 modulation
• Ariston NET compatibility
• XtraTech stainless steel heat exchanger

The combination of these features makes the E-Combi ONE platform suitable for customers looking for a modern LPG combi boiler with integrated heating and hot-water controls.

Vertical Flue Installation

The vertical flue arrangement is particularly relevant where the boiler’s flue needs to pass upward through the roof.

The installation must follow the manufacturer’s approved flue configuration.

Before ordering or installation, confirm:

• Required vertical flue length
• Boiler position
• Roof type
• Flat or pitched roof arrangement
• Terminal location
• Required clearances
• Number and type of bends
• Required adaptors
• Flue supports
• Condensate arrangements
• LPG supply
• Local building and gas regulations

Ariston’s installation documentation provides specific flue configuration and length requirements; the installer should use the current installation manual for the exact system being fitted.

Ariston E-Combi ONE 24 LPG Vertical vs Horizontal Flue

EuroFuelSupply offers different flue configurations for the E-Combi ONE platform.

Vertical Flue

The vertical version is designed for an upward flue route, typically through the roof where the approved installation configuration allows it.

Horizontal Flue

The horizontal version is intended for an approved horizontal flue route terminating through a suitable external wall.

The boiler itself remains the same core E-Combi ONE 24 LPG appliance; the flue configuration and supplied accessories are the primary difference.

For customers deciding between the two, the correct option depends on the building layout and the flue route permitted by the manufacturer and local regulations.

Applications

The Ariston E-Combi ONE 24 LPG with vertical flue kit can be considered for:

• LPG-powered homes
• Rural properties
• Properties outside mains-gas networks
• Holiday accommodation
• Leisure properties
• Selected park homes
• Residential heating upgrades
• LPG combi boiler replacement projects
• Installations requiring vertical roof flue routing

A professional heating engineer should confirm suitability before purchase.

Why Choose the E-Combi ONE 24 LPG Vertical Flue Package?

Complete Boiler and Vertical Flue Configuration

This product combines the E-Combi ONE 24 LPG boiler with a vertical flue configuration, helping buyers identify the correct package for a suitable installation.

LPG Condensing Technology

The E-Combi ONE 24 is a condensing combination boiler designed for LPG heating and domestic hot-water production.

21 kW Heating Output

The LPG 24 model provides a maximum central-heating output of 21 kW according to Ariston’s LPG technical data.

10.6 L/min Domestic Hot Water Flow

The published DHW flow rate is 10.6 L/min at ΔT 35°C.

XtraTech Stainless Steel Heat Exchanger

The boiler uses Ariston’s XtraTech stainless steel heat exchanger platform.

Compact Wall-Hung Design

The E-Combi ONE is designed as a wall-mounted combi boiler, combining heating and domestic hot-water functions in one appliance.

Professional Installation

LPG gas appliances and flue systems should be installed by an appropriately qualified professional.

The installer should verify the complete installation against the current Ariston documentation and the regulations applicable in the country of installation.

Particular attention should be given to the LPG supply, combustion requirements, flue route, terminal position, condensate drainage and electrical connections.

Frequently Asked Questions

What is the Ariston E-Combi ONE 24 LPG?

The Ariston E-Combi ONE 24 LPG is a wall-hung condensing combination boiler designed to provide central heating and domestic hot water using LPG.

What is the heating output?

The LPG 24 model has a maximum central-heating output of 21 kW.

What is the hot-water flow rate?

Ariston specifies 10.6 L/min at a 35°C temperature rise for the LPG 24 model.

Does this product include a vertical flue kit?

Yes. This EuroFuelSupply product is specifically sold as the Ariston E-Combi ONE 24 LPG with vertical flue kit. Confirm the exact package contents before installation.

Can the vertical flue be used through a pitched roof?

Ariston’s installation documentation describes the vertical flue terminal as suitable for approved flat-roof and pitched-roof applications when installed using the correct components and configuration.

Can the vertical flue be any length?

No. Flue length and configuration must remain within the manufacturer’s permitted limits. The installer should calculate the complete flue development using the current Ariston installation documentation.

Is the E-Combi ONE 24 LPG a condensing boiler?

Yes. Ariston’s LPG technical documentation identifies the E-Combi ONE LPG 24 as a condensing boiler.

What heat exchanger does it use?

The E-Combi ONE uses an XtraTech stainless steel heat exchanger.

Is this the same boiler as the horizontal-flue version?

The core E-Combi ONE 24 LPG boiler is the same product platform, but this package is specifically configured/supplied with a vertical flue kit. The horizontal-flue product targets a different installation configuration.

Can I install this boiler myself?

Gas boiler and flue installation should be carried out by an appropriately qualified professional and must comply with the manufacturer’s instructions and applicable local regulations.

Buy Ariston E-Combi ONE 24 LPG Vertical Flue Kit

The Ariston E-Combi ONE 24 LPG with Vertical Flue Kit combines an LPG condensing combi boiler with a vertical flue configuration for suitable installations.

Check current availability, exact package contents, delivery options and installation requirements before ordering.

EuroFuelSupply can assist with product availability, European delivery enquiries and trade or multiple-unit requirements.