Intergas is a Dutch heating manufacturer with a strong presence in the UK. Its boiler range is known for the two-in-one bithermic heat exchanger, compact casing designs and a focus on reducing the number of moving parts in the appliance.

Are Intergas boilers any good? They can be a sensible choice when the boiler is correctly sized, the system is designed properly and the installation is completed by a qualified engineer. The right choice still depends on the property, heat loss, hot-water demand, mains-water flow, available space, controls and the terms of the quotation.

The current Intergas combi range includes the ECO RF, Xclusive and Xtreme families. The HRE and Rapid Plus ranges may also appear in the manufacturer’s warranty information, but model availability and specifications can vary. This review focuses on the main current ranges that homeowners are most likely to compare.

If you are comparing replacement options, you can request a new boiler quote or read our guide to new boiler costs.

Are Intergas boilers any good?

Intergas boilers Review are worth considering if you want a compact gas boiler with a simplified hydraulic design, built-in smart-control options on selected models and a long conditional warranty on the main current ranges.

The strongest reasons to compare Intergas include:

•The two-in-one bithermic heat exchanger used across the range.

•Fewer components in some combi models, including the absence of a traditional diverter valve.

•ECO RF, Xclusive and Xtreme combi options for different installation requirements.

•Built-in RF technology on selected models for compatibility with Intergas controls.

•Xtreme models with passive flue gas heat recovery.

•Warranty options of up to 10 years on selected ranges, with an additional two years available when an Intergas System Filter is fitted, subject to the manufacturer’s terms.

The main points to consider are the availability of engineers familiar with the brand, the exact warranty registration requirements, the hot-water flow rate of the selected model and whether the local installer can provide suitable aftercare.

If you are comparing different manufacturers, our guide to the best boilers in the UK compares several popular boiler brands and models.

Intergas boiler range at a glance

Range	Boiler type	Current models shown by Intergas	Main feature	May suit
ECO RF	Combi	ECO RF 24, 30 and 36	RF technology, compact design and two-in-one heat exchanger	Homes looking for a practical combi with smart-control potential
Xclusive	Combi	Xclusive 24, 30 and 36	Touchscreen controls, built-in RF module and 10-year parts and labour warranty	Homeowners wanting a higher-specification combi
Xtreme	Combi	Xtreme 24, 30 and 36	Passive flue gas heat recovery, touchscreen controls and 10-year parts and labour warranty	Homes where higher efficiency features and premium specification matter
HRE	Combi or other configurations depending on model	Model availability varies	Established Intergas platform	Replacement projects where a specific HRE model is suitable and available
Rapid Plus	Combi	Model availability varies	Compact boiler option within the Intergas range	Some smaller installations, subject to current availability and specification

The model names and available configurations can change. A boiler’s headline range or output does not determine whether it is suitable for a particular home.

Intergas combi boilers should also be compared with other models based on output, hot-water flow rate, warranty conditions and the property’s mains-water performance. See our guide to the best combi boiler brands for a wider comparison.

1. Intergas ECO RF review

The ECO RF is a combi boiler designed to provide central heating and domestic hot water without a separate hot-water cylinder or cold-water storage tank. Intergas describes it as a smart boiler with built-in RF hardware and a two-in-one heat exchanger.

The current manufacturer page shows the ECO RF 24, ECO RF 30 and ECO RF 36. The listed central-heating outputs are 18kW, 23.1kW and 27kW respectively. The model number and output should be checked carefully because the number in the product name does not always represent the central-heating output.

ECO RF features

•ECO RF 24, 30 and 36 models.

•Two-in-one aluminium heat exchanger with separate circuits for heating and hot water.

•Built-in RF hardware for monitoring and control on compatible installations.

•Comfort Touch compatibility, with a gateway required for remote access.

•Compact wall-mounted design.

•Ten-year heat-exchanger warranty listed by the manufacturer.

•Ten-year warranty shown for the current models, subject to registration and terms.

The ECO RF can be a practical option for a smaller or medium-sized home where a combi boiler is suitable. Its performance will still depend on the incoming mains-water flow and pressure. A higher boiler output cannot compensate for weak mains supply.

A system boiler and cylinder may be more suitable where several bathrooms are used at the same time. That choice depends on household usage and the wider heating system, not just the number of bedrooms.

2. Intergas Xclusive review

The Xclusive is a higher-specification Intergas combi boiler. The current manufacturer page lists Xclusive 24, Xclusive 30 and Xclusive 36 models.

The range includes an illuminated touchscreen display, an expansion vessel within the casing, a combined pressure relief valve and condensate connection, an integral filling loop and dual OpenTherm inputs. The RF module is fitted as standard, allowing compatibility with the Intergas Comfort Touch app and controls.

Xclusive features

•24kW, 30kW and 36kW models.

•Illuminated touchscreen display.

•Built-in RF module.

•Comfort Touch compatibility.

•Dual OpenTherm inputs.

•Integral filling loop.

•Compact casing with internal expansion vessel.

•Ten-year parts and labour warranty, subject to terms.

•Potential for an additional two years when an Intergas System Filter is fitted, subject to the manufacturer’s conditions.

The Xclusive may suit a homeowner who wants a combi boiler with more integrated controls and a longer stated warranty than some entry-level options. The extra features do not remove the need for correct sizing, proper commissioning and regular servicing.

The 36kW model should not be selected automatically for a large home. For a combi boiler, the hot-water flow available at the taps depends on the boiler and the incoming mains supply. Ask the installer to explain the expected flow rate for the property.

3. Intergas Xtreme review

The Xtreme is one of Intergas’s premium combi ranges. It combines the brand’s bithermic heat exchanger with passive flue gas heat recovery, known as PFGHR.

The current manufacturer page lists Xtreme 24, Xtreme 30 and Xtreme 36 models. Their listed central-heating outputs are 20kW, 26kW and 32kW respectively. The range is designed to recover additional heat from the flue gases and use it to preheat water for domestic hot water or heating.

Xtreme features

•Xtreme 24, 30 and 36 models.

•Passive flue gas heat recovery.

•Illuminated touchscreen display.

•Built-in expansion vessel.

•Integral filling loop.

•Dual OpenTherm inputs.

•Two-in-one aluminium heat exchanger.

•Ten-year parts and labour warranty, subject to terms.

•Potential for an additional two years with an Intergas System Filter, subject to conditions.

The Xtreme may appeal to homeowners who want the most feature-rich combi option in the Intergas range. The flue gas heat-recovery system adds technology to the appliance, so the installation must be planned correctly and the installer must be familiar with the product.

A premium boiler is not automatically the best boiler for every home. The final choice should balance the heat loss, hot-water demand, installation cost, controls and aftercare.

What is the Intergas two-in-one heat exchanger?

The Intergas bithermic heat exchanger is designed to handle central heating and domestic hot water in one component. Intergas says the design removes the need for some separate components used in conventional combi arrangements, including a traditional diverter valve and secondary hot-water plate heat exchanger.

The potential advantage is a simpler hydraulic layout with fewer components that can wear, stick or leak. That does not mean the boiler is maintenance-free or that faults are impossible. Pumps, sensors, fans, electronics, seals and other components can still require attention during the boiler’s life.

The condition of the full heating system also matters. Water quality, magnetic protection, system pressure, controls and annual servicing can all affect performance.

Intergas boiler efficiency and controls

Intergas describes its current boilers as high-efficiency condensing appliances. The exact efficiency figure and ErP rating depend on the model. The Xtreme range adds passive flue gas heat recovery, while the ECO RF and Xclusive ranges use RF technology for compatible controls.

Smart controls can help a boiler respond more effectively to changes in room temperature and heating demand. They do not automatically reduce energy use in every home. The result depends on the control settings, flow temperature, insulation, radiator sizing and how the household uses the heating.

Check whether the proposed thermostat or gateway is included in the quotation. Some controls and remote-access equipment may be supplied separately from the boiler.

Intergas boiler warranties

Intergas’s current UK warranty information lists different periods by range:

•ECO RF, Xclusive and Xtreme ranges: 10 years.

•HRE range: seven years.

•Rapid Plus range: six years.

•Rapid range: three years.

•Heat exchanger: seven years on Rapid boilers and 10 years across the rest of the listed range.

The warranty must be registered within 30 days of commissioning. Intergas states that failing to register within that period can result in a 12-month manufacturer’s warranty only.

The exact warranty may also depend on the model, installation, registration, servicing and any applicable filter conditions. The manufacturer’s current terms should be read alongside the written installation quotation.

Intergas also states on its current product pages that fitting an Intergas System Filter can add two years to the warranty, subject to terms and conditions. This should be treated as a conditional extension rather than an automatic warranty for every installation.

Intergas warranty terms can vary according to the model, installer requirements, registration and servicing conditions. Our guide to the best boiler warranties explains what homeowners should compare beyond the advertised number of years.

Advantages of Intergas boilers

Simplified combi design

The two-in-one heat exchanger and reduced number of hydraulic components are central to Intergas’s design approach. This can make the range attractive to homeowners who prefer a simpler combi layout.

Compact installation options

The current combi ranges are designed as compact wall-mounted appliances. Whether a boiler can be fitted inside a cupboard depends on clearances, ventilation, flue access, servicing space and the installation regulations.

Range of specifications

The ECO RF, Xclusive and Xtreme ranges give homeowners different options. The ECO RF is a practical model family, the Xclusive adds integrated controls and a touchscreen, and the Xtreme adds passive flue gas heat recovery.

Long warranty options

Selected Intergas ranges carry 10-year warranty terms, subject to registration and conditions. The additional filter-related extension may make the warranty package more attractive when the full installation cost remains competitive.

Smart-control compatibility

RF technology and Comfort Touch compatibility are available on selected models. Confirm which control equipment is included and whether a gateway is needed for remote access.

Potential disadvantages and limitations

Installer familiarity matters

Intergas has a distinct heat-exchanger and hydraulic design. A qualified Gas Safe engineer should be able to install gas appliances safely, but choosing an installer familiar with the exact Intergas model can make commissioning and future servicing easier.

The warranty is conditional

A 10-year headline warranty does not mean every boiler receives identical cover automatically. Registration, the 30-day deadline, servicing and the specific product terms matter.

Combi performance depends on mains flow

The Xtreme 36 or another high-output combi cannot create water flow that the property’s mains supply does not provide. A mains-flow and pressure check is important before choosing a combi for a busy household.

Boiler output should be selected according to the property’s heat loss and hot-water requirements. Our boiler kW calculator can help homeowners understand the factors involved before requesting a professional assessment.

System boilers may be better for simultaneous demand

If several showers or hot-water outlets are used at the same time, a system boiler and cylinder may provide a better solution than a combi. The cylinder must be correctly sized and the available space must be considered.

If your home has several bathrooms or high simultaneous hot-water demand, a system boiler may be more suitable. You can compare alternative options in our guide to the best system boiler brands.

Current availability can vary

Older Intergas models may still appear in retailer listings or previous articles. Check the exact model, output, warranty and availability in the quotation rather than relying on an old price or product page.

Are Intergas boilers reliable?

No boiler brand is automatically the most reliable choice for every property. Reliability depends on the exact model, correct sizing, installation quality, system water quality, controls, servicing and how the appliance is used.

Intergas’s simplified design may reduce the number of certain components in a combi boiler, but it does not eliminate the need for maintenance. A well-installed boiler with suitable controls and regular servicing is more likely to perform well than an oversized boiler installed without proper system design.

Compare the installer’s experience, aftercare arrangements, parts availability and written warranty terms as carefully as the boiler’s headline features.

How much does an Intergas boiler cost?

There is no single reliable fitted price for an Intergas boiler. The total cost depends on the exact model and output, boiler type, location, flue route, condensate drainage, gas pipework, controls, filter, system cleaning, removal of the old boiler and access.

A straightforward combi-to-combi replacement may cost less than converting a regular boiler to a combi. A system installation may require a cylinder, valves, controls and additional pipework.

A written quotation should identify:

•The exact Intergas model and output.

•The boiler type and included controls.

•Whether a System Filter is included.

•Flue and condensate work.

•Gas-supply upgrades or pipework.

•System cleaning and water treatment.

•Removal and disposal of the old boiler.

•Warranty registration and servicing requirements.

•Any access, making-good or exclusions.

You can read our new boiler cost guide and boiler replacement cost guide for planning information. The final price should be based on the property and installation scope rather than a generic model price.

The final price depends on the model, output, controls, flue position and installation requirements. Read our guide to new boiler costs for a broader explanation of the factors that affect a fitted quotation.

Choosing an Intergas installer

Gas boiler installation must be completed by an appropriately qualified Gas Safe registered engineer. You can use the Gas Safe Register to check the business or engineer and the relevant gas-work categories.

Ask the installer to explain the proposed boiler output, hot-water expectations, controls, filter, flue route, warranty registration and servicing requirements. Keep the installation paperwork, warranty confirmation and service records after the work is complete.

If you are considering an Intergas boiler for your property, you can request a new boiler quotation based on your home, heating system and hot-water requirements

Frequently asked questions about Intergas boilers review

Is Intergas better than Worcester Bosch or Vaillant?

Not automatically. Intergas may offer a better specification or price for one property, while Worcester Bosch or Vaillant may be a better fit for another. Compare the exact model, system design, controls, warranty and installer support.

Which Intergas boiler is best?

The best model depends on the property. The ECO RF may suit a homeowner looking for a practical combi with RF technology. The Xclusive may suit someone who wants integrated controls and a touchscreen. The Xtreme may be attractive when passive flue gas heat recovery and premium features are priorities.

Are Intergas boilers suitable for large homes?

A combi may be suitable for some larger homes if the mains flow and hot-water demand are compatible. If several outlets are used together, compare a system boiler and cylinder before choosing a high-output combi.

How long is an Intergas boiler warranty?

The current manufacturer information lists 10 years for ECO RF, Xclusive and Xtreme, seven years for HRE, six years for Rapid Plus and three years for Rapid. Registration within 30 days is required, and terms can vary by model and installation.

Do Intergas boilers need servicing?

Yes. Annual servicing by a qualified Gas Safe engineer helps check safe operation, combustion, controls, condensate drainage, system pressure and the condition of the appliance. Servicing may also be required to maintain warranty cover.

What is the difference between ECO RF, Xclusive and Xtreme?

The ECO RF focuses on compact design, RF technology and the two-in-one heat exchanger. The Xclusive adds features such as a touchscreen, built-in RF and dual OpenTherm inputs. The Xtreme adds passive flue gas heat recovery alongside the touchscreen and other integrated features.

Final verdict: should you buy an Intergas boiler?

Intergas boilers are worth comparing if you want a compact combi range with a simplified heat-exchanger design, smart-control options and long conditional warranty terms on selected models.

The ECO RF, Xclusive and Xtreme ranges cover different priorities. The right choice depends on the home’s heat loss, mains-water flow, hot-water demand, installation space, controls, installer experience and total fitted cost.

If you would like to compare Intergas with other suitable boilers, request a new boiler quote. Include your current boiler type, property size, number of bathrooms, hot-water usage and any known water-flow issues so the quotation can reflect the actual installation.

Mo Alwadi (Gas Safe Registered Engineer)

Mo Alwadi is Renewable Manager at Let’s Heat and a Gas Safe registered engineer (registration no. 977042), with experience in domestic heating and air conditioning. He contributes technical guidance on boiler installation, boiler replacement, heating systems, air conditioning and home energy solutions, helping UK homeowners understand their options and make informed decisions.

View all posts by Mo Alwadi →

Intergas Boilers Review 2026: Are Intergas Boilers Any Good?

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