Industrial Boiler vs Heat Pump: Which Heating System Fits Your Facility?

When a facility needs steam, hot water or process heat, an industrial boiler is often one of the first technologies considered. However, heat pumps are becoming another option for commercial and industrial heating, particularly where lower-temperature heat or recoverable waste heat is available.

That does not necessarily make one technology a replacement for the other.

The more useful comparison is how each system produces or transfers heat, the temperatures it can support, the available energy source and how well it fits the existing process.

For facilities exploring industrial heat pump solutions in Malaysia alongside conventional boiler systems, understanding these differences can help narrow down which approach is worth evaluating further.

An industrial boiler supplies heat by converting energy from a fuel or electricity into useful thermal energy. Depending on the system, that heat may be used to produce steam or hot water for manufacturing processes, cleaning, sterilisation, facility services and other applications.

This makes boilers particularly relevant where a facility already relies on steam or has processes built around an established boiler and steam-distribution system.

ATE supplies industrial steam boilers for process and commercial steam applications, as well as industrial hot water boilers for process-water and commercial heating requirements.

Facilities interested in steam-boiler selection and Malaysian compliance considerations can also read ATE’s guide to steam boiler selection, installation and DOSH compliance.

A heat pump works differently. Rather than relying on combustion to generate all of its useful heat, an electrically driven heat pump transfers heat from a lower-temperature source and raises it to a temperature that can be used elsewhere.

The source might be ambient air, water or recoverable heat from another process, depending on the system design.

Heat-pump performance is commonly described using its Coefficient of Performance (COP). COP represents the useful heating output relative to the electrical work supplied to the heat pump.

Because a heat pump transfers existing heat rather than relying only on electrical resistance to generate it, its COP can be greater than 1. However, the actual performance depends on operating conditions, particularly the temperature of the heat source and the temperature required by the process.

The IEA Heat Pumping Technologies programme highlights temperature, process medium, operating behaviour and integration conditions as important factors when matching an industrial heat pump to a process. Read the industrial heat-pump integration research.

Boilers remain well established across industrial and commercial facilities, particularly where the process requires steam or where steam infrastructure is already part of the plant.

For instance, manufacturing, food processing and healthcare facilities may use steam for process heating, cleaning or sterilization. In these situations, replacing a boiler is not simply a question of comparing equipment efficiency. The temperature, pressure, steam demand and existing distribution system also matter.

Besides that, boilers cover a wide range of heating duties. ATE’s portfolio includes steam, hot water and electric boiler systems, giving facilities different options depending on the available energy source and process requirements.

For processes requiring temperatures beyond conventional hot-water or steam applications, other technologies may also be relevant. ATE’s thermal fluid heaters, for example, are designed for high-temperature process heating and include systems capable of reaching up to 345°C.

Industrial heat pumps are particularly interesting where useful heat is required at low or medium temperatures.

The International Energy Agency’s Heat Pump Monitor 2026 reports that commercially available heat pumps could technically supply around 20% of global industrial heat demand, mainly in low- and medium-temperature processes.

The same analysis notes that industrial heat pumps below 120°C are already in commercial operation, while systems are beginning to enter commercial operation at temperatures below approximately 160°C. Technologies for substantially higher temperature levels remain at earlier stages of deployment.

This makes heat pumps relevant to applications such as hot-water production and suitable process-heating duties, although the actual fit depends on the required temperature and available heat source.

ATE’s industrial heat pump systems are designed for commercial and industrial hot-water applications and can also be integrated with existing heating systems.

Temperature is one of the most important differences to understand when comparing an industrial boiler with a heat pump.

For a heat pump, the difference between the heat-source temperature and the required output temperature is often called the temperature lift. In general, increasing this lift requires more work from the heat pump and can reduce its COP.

This means a facility with a relatively warm source of recoverable heat and a moderate output-temperature requirement can present very different conditions from a facility trying to produce much higher-temperature process heat from a colder source.

Rather than treating all industrial heating requirements as the same, the source temperature and required process temperature provide useful starting points for evaluating heat-pump feasibility.

This question needs some context because boiler efficiency and heat-pump COP describe performance differently.

Boiler efficiency generally describes how much of the supplied fuel or electrical energy becomes useful heat. Heat-pump COP, on the other hand, compares useful heat output with the electrical work used to transfer that heat.

As a result, a heat pump can have a COP above 1 without violating the principles of energy conservation; part of the delivered heat comes from the external heat source rather than from electricity alone.

For this reason, a COP value and a boiler-efficiency percentage are not directly interchangeable measures.

More importantly, real heat-pump COP varies with operating conditions. Industrial heat-pump specifications therefore need to be considered at defined source and supply temperatures rather than relying on one generic COP figure.

It can, as many industrial processes reject heat that is too cool to reuse directly. A heat pump can sometimes raise this heat to a more useful temperature, allowing energy that would otherwise be rejected to serve another heating duty.

This can be especially relevant where heating and cooling requirements exist at the same facility.

However, waste heat alone does not guarantee that a heat-pump project will work well. The amount of recoverable heat, its temperature, availability throughout the operating schedule and the temperature required by the receiving process all influence the result.

For facilities with more complex heat-recovery requirements, ATE also provides engineered thermal systems that can be configured around specific process requirements.

There is no single answer to whether a boiler or heat pump costs less to operate.

For boilers, operating costs can be influenced by fuel or electricity prices, system efficiency, operating hours, load profile and maintenance requirements.

On the other hand, for heat pumps, electricity prices remain important, but so do COP, temperature lift, heat-source conditions and the required operating schedule.

The IEA notes that energy prices have a major influence on the lifetime cost competitiveness of heat pumps. Upfront investment and integration requirements can also affect the overall economics.

For this reason, a generic percentage saving is not particularly useful for an industrial comparison. A facility using low-temperature waste heat continuously may have a very different result from one requiring intermittent high-temperature process heat.

Heat pumps can support industrial electrification because electrically driven systems do not require fuel combustion at the point of use.

However, this does not mean that every heat-pump installation is automatically carbon-free. The wider greenhouse-gas impact also depends on how the electricity is generated and how the system performs in its actual operating conditions.

Boilers also vary. A fuel-fired boiler involves on-site combustion, while an electric boiler does not. Therefore, comparisons around emissions need to consider the actual energy source rather than treating all boilers as one category.

Sometimes, but not in every application. A heat pump may be able to take over certain hot-water or process-heating duties when its temperature range and capacity match what the facility needs.

However, replacing a boiler becomes more complicated when the existing process relies on steam, higher temperatures or operating conditions that may not suit the proposed heat-pump system. It is also important to consider the existing setup, including pipework, heat exchangers, storage, electrical capacity and production schedules, as these can affect how practical the conversion would be.

For a closer look at how this technology is developing locally, ATE’s article on heat pump adoption in Malaysia explores commercial applications and current adoption trends in the Malaysian market.

It does not always have to be a choice between one system or the other. In some facilities, a hybrid approach can allow a heat pump to handle suitable hot-water, lower-temperature or base-load needs, while the boiler continues to support steam, peak demand or higher-temperature requirements.

ATE’s heat-pump systems can also be integrated with existing hot-water systems and operate alongside boilers as part of a hybrid setup. Whether this approach is suitable will depend on the facility’s heating demand, process temperatures, existing infrastructure and day-to-day operating requirements.

When comparing an industrial boiler with a heat pump, several practical details can help define the options more clearly.

A requirement for hot water is different from a requirement for pressurised steam or high-temperature thermal fluid.

The required supply temperature can significantly influence which technologies are technically practical and how efficiently they operate.

A stable source of waste heat can change the potential performance and economics of an industrial heat-pump system.

Continuous base-load heating and short periods of peak demand can favour different system configurations.

An existing steam network, hot-water loop, electrical supply or heat-recovery system can influence the scale of changes required.

Electricity capacity, fuel availability and energy tariffs can all affect operating economics.

Industrial boilers and heat pumps solve heating requirements in different ways, so the comparison is rarely as simple as deciding which technology is universally better.

Boilers remain relevant for steam, higher-temperature duties and facilities with established boiler infrastructure. Heat pumps can be particularly interesting for hot water, low- and medium-temperature process heat, waste-heat recovery and suitable electrification projects.

In some facilities, the two technologies may also complement each other rather than compete for the same duty.

ATE provides steam boilers, hot water boilers, electric boilers and industrial heat pump solutions in Malaysia, together with engineered thermal systems for different operating requirements.

Discuss Your Facility’s Heating Requirements With ATE