Thermal Oil Heater

Thermal Oil Heater Manufacturer in Pakistan

Textile printing and dyeing, stenters, edible oil and ghee refining, chemical and oleochemical plants, synthetic fiber, plastic and rubber factories all need steady high-temperature heat. A thermal oil heater gives that heat with precise temperature control and without a high-pressure steam system. Every AGK heater is designed, fabricated and tested in our Sahiwal workshop and installed by our own engineers.

Hot Oil Heating vs a Steam Boiler

• High temperature at low pressure: oil reaches around 300 to 350°C while the system pressure stays low.
• No water treatment: there is no feed water, so no scale and no blowdown losses.
• Precise control: temperature stays stable, which improves product quality.
• Lower running cost: fewer losses and less manpower in the boiler house.

If your process needs steam rather than high-temperature heat, see our fire tube boilers or biomass boilers.

Fuel Options

We supply heaters for local and imported coal, rice husk and wood chips, natural gas, light diesel oil and furnace oil, as well as multi-fuel designs. Burning local biomass in a thermal oil heater is a good way to cut fuel cost for stenters and other high-heat machines.

Horizontal or Vertical?

Vertical heaters take less floor space and suit smaller capacities. Horizontal heaters suit larger capacities and solid fuel firing. Our engineers choose the layout based on your heat load, fuel and available space.

Safety You Can Rely On

Hot oil systems need good controls. We provide flow switches, temperature controls, expansion tanks and safety interlocks, and we test them during commissioning. Regular oil testing and filter cleaning keep the system safe for many years.

Common Problems We Fix

Older hot oil systems often lose efficiency because of cracked or carbon-coated coils, worn pumps, poor burner tuning or aged oil. Our engineers inspect the coil, test the oil, check pump flow and repair or replace the parts that cause trouble. In many cases a coil replacement and burner tuning bring an old unit back to full output at a much lower cost than a new one.

Service and Spare Parts

Every AGK heater is backed by local boiler spare parts, oil pumps, valves and 24/7 boiler services. You can also add a waste heat recovery boiler on the heater exhaust to make extra steam. Learn more about heat transfer basics.

Frequently Asked Questions

What capacities do you make?
We build heaters from 5 to 14 MKcal per hour in horizontal and vertical designs.

Can these heaters run on biomass?
Yes. We design solid fuel heaters for coal, rice husk and wood chips.

How do I get a quotation?
Contact AGK or WhatsApp +92 300 4493333 with heat load, temperature, fuel and city.

Thermal Oil Heater vs Steam Boiler

A thermal oil heater and a steam boiler both deliver heat to your process, but they work in different ways. A steam boiler heats water into steam under pressure. A thermal oil heater heats special oil and pumps it around the plant in liquid form.

• High temperature at low pressure: a thermal oil heater can give process heat up to about 300 to 350°C while the system stays at low pressure. To reach the same temperature with steam, very high pressure is needed.
• No water treatment: there is no scale, no blowdown and no water chemicals.
• No freezing or corrosion from water: the oil stays liquid and does not rust the pipes.
• Precise temperature control: ideal for processes that need exact heat, like printing, laminating and chemical reactors.

If your process needs heat below about 180°C, a steam boiler is often simpler. Above that, thermal oil is usually the better and safer choice.

Industries That Use Thermal Oil Heaters

• Textile: stenters, printing machines, dryers and heat-setting lines.
• Edible oil and ghee: deodorizers and high-temperature process lines.
• Chemical and plastics: reactors, extruders and moulding.
• Wood and board: hot presses for plywood, MDF and particle board.
• Food: frying, baking and roasting lines.

Horizontal or Vertical Thermal Oil Heater?

AGK builds both horizontal and vertical designs. A vertical unit takes less floor space and is good for smaller capacities. A horizontal unit is easier to maintain at larger capacities. We also build oil and gas fired units, as well as coal and biomass fired heaters for plants that want to cut fuel cost.

Thermal Oil Heater Safety and Care

• Use good quality thermal oil and test it once or twice a year.
• Keep the expansion tank and deaerator working correctly.
• Never run the heater without oil flow. Flow switches protect the coils.
• Clean the coil and flue passages to keep efficiency high.
• Replace oil when tests show it has broken down.

Our boiler services team offers oil testing, coil inspection and yearly AMC for every thermal oil heater we install. You can also pair your heater with a waste heat recovery boiler to make steam from its hot flue gas.

Thermal Oil Heater FAQs

What capacity thermal oil heater does AGK make?

From 5 MKcal up to 14 MKcal per hour, in coal, biomass, gas and oil fired versions.

Can a thermal oil heater run on biomass?

Yes. We build biomass fired heaters that burn rice husk, wood chips and other local fuels. See our biomass boiler page for fuel details.

How long does thermal oil last?

It depends on the operating temperature and care. Regular oil testing tells you when it needs to be changed.

How do I get a quote?

Share your heat load, temperature, fuel and city on WhatsApp at +92 300 4493333, or contact AGK. You can also read about heat transfer fluids.