Why Traditional Warm Air Unit Heaters Remain the Smart Choice for Industrial Heating in the Age of Going Green

Apen LK Unit Heater

Hadar Fornax Oil Fired Unit Heater

Apen LK Unit Heater
In a world increasingly focused on sustainability and the reduction of fossil fuel use, businesses are constantly looking for ways to improve energy efficiency and lower carbon emissions. However, when it comes to heating large industrial buildings such as warehouses, factories, and workshops, fossil fuel-powered warm air unit heaters continue to provide the most practical, reliable, and cost-effective solution.
The True Cost of Green Heating Alternatives
Electric and renewable heating systems, such as air source and ground source heat pumps, can offer lower carbon emissions under the right conditions. However, for most large industrial spaces, these systems come with significant financial and practical challenges:
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High capital cost: The purchase and installation cost can be several times that of a gas or oil-fired heating system.
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Long payback period: Even with government incentives, the return on investment can extend beyond a decade.
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Complex installation: Additional ductwork, floor space, and infrastructure are often required.
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Limited suitability: Heat pumps struggle to maintain efficiency in very large or poorly insulated industrial spaces.
For many sites, the combination of high initial investment and operational complexity makes fully electric heating impractical.
Limited Electrical Power Availability
Most existing industrial buildings simply do not have enough electrical capacity to power large-scale electric heating systems. Upgrading an electrical supply to handle the additional load involves:
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Costly transformer and distribution board upgrades
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Potential delays waiting for grid reinforcement
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Disruption to site operations during installation
By contrast, gas-fired and oil-fired warm air unit heaters can be installed quickly and economically, using existing gas or oil infrastructure.
The Advantages of Warm Air Unit Heaters
Warm air unit heaters remain one of the most efficient and versatile ways to heat large open areas. They provide fast, even heat distribution and can be zoned or individually controlled to suit different areas of a building.
Modern designs have advanced significantly, achieving high efficiency levels, lower emissions, and compatibility with smart controls and building management systems.
Apen Gas-Fired Warm Air Unit Heaters
The Apen range of gas-fired warm air unit heaters — including the LRN, LRP, and LK models — are engineered to provide exceptional performance and energy efficiency across a wide variety of industrial and commercial environments.
Key features and benefits include:
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High seasonal efficiency (up to and exceeding 90%), helping to reduce fuel consumption and running costs.
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Modulating burners that automatically adjust output to match heating demand, improving comfort and efficiency.
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Compact, versatile design suitable for wall or ceiling mounting, offering installation flexibility for different building layouts.
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Durable construction for long service life in industrial conditions.
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Low NOx emissions for improved environmental performance.
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Compatibility with smart controls and thermostats to optimise energy management and reduce wastage.
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Quick, even heat distribution, making them ideal for large open spaces such as factories, workshops, and warehouses.
The Apen LRN, LRP, and LK models provide a proven, efficient, and low-maintenance solution for businesses looking to heat their premises effectively while keeping operational costs under control.

Hadar Fornax Oil-Fired Warm Air Unit Heaters
For sites without access to mains gas, the Hadar Fornax oil-fired warm air unit heater is an excellent alternative, delivering reliable and efficient heating performance.
Key features and benefits include:
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High thermal efficiency, ensuring maximum heat output from every litre of oil used.
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Robust steel construction for durability and long operational life.
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Advanced combustion technology for clean, efficient burning and reduced emissions.
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Consistent and controllable heat, maintaining comfortable working conditions even in large or exposed areas.
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Simple installation and servicing, making it ideal for remote or rural locations.
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Flexible configuration options, including floor-mounted and suspended versions to suit different building layouts.
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Proven reliability under demanding industrial operating conditions.
The Hadar Fornax range is particularly well-suited to manufacturing sites, agricultural buildings, and workshops that rely on oil as their primary fuel source.

A Realistic Path Toward Sustainable Heating
Transitioning to green energy is a long-term goal, but it must be achieved in a way that is practical, affordable, and suitable for real-world industrial environments. For most facilities today, upgrading to modern, high-efficiency fossil fuel-powered warm air unit heaters offers a sensible balance between sustainability and cost control.
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By choosing Apen gas-fired heaters or Hadar Fornax oil-fired heaters, businesses can significantly reduce their fuel usage, improve energy efficiency, and maintain comfortable working environments without the need for costly electrical infrastructure upgrades.
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