Preheat Engineering Ltd

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Preheat Engineering Ltd Preheat Engineering is the designer and manufacturer of PEREGRINE and FALCON engine pre-heaters We're here to to get you started when you stop!

www.preheat.co.uk

Please look through our product range and feel free to contact us if you have any queries. Over the years our range of equipment has expanded to meet not only the needs of our customers but the ever changing and developing market as well. Our main equipment lines are listed under products above. However we also design and manufacture many items of equipment to customer specification, from large industrial heaters down to small fittings, flanges and brackets.

We think about keeping the engine warm. But what about the battery? When equipment is operating in very cold conditions,...
14/10/2026

We think about keeping the engine warm. But what about the battery?

When equipment is operating in very cold conditions, the battery can become an important part of the reliability equation.
Cold temperatures can affect battery performance, so maintaining the battery at a suitable temperature can help it operate efficiently when it is needed.

That is where PEREGRINE Battery Pan Heaters are intended to help.
PEREGRINE battery pan heaters are designed to maintain the battery temperature at a level to allow the battery to operate efficiently.
They are generally used in ambient temperatures below −10°C and incorporate an internal thermal cut out set at 40°C for safety.
The heaters can be fitted in multiples where required, depending on the size of the battery tray and the number of batteries involved.
They are ideally controlled by a separate air thermostat fitted to a nearby panel.
And with a large range of voltages available, including low voltage DC, together with a range of wattages, they can be specified to suit different battery applications.

Reliable equipment operation in cold conditions depends on more than keeping the engine warm. Fuel and battery performance also need consideration.

A small component can make an important difference when equipment has to operate in demanding cold conditions.

PEREGRINE Battery Pan Heaters�Designed to help keep batteries ready to operate efficiently when temperatures fall.

+44 (0)20 8848 1912 [email protected]

08/10/2026

Heat isn't the only thing an engine heater has to deal with.

Vibration can be just as important.

When a coolant heater is mounted directly onto an engine, it is exposed to the same vibration generated during engine operation.
Over time, excessive vibration can place additional stress on the heater and its components, potentially compromising its operation and reducing its usable life.
Ideally, heaters should not be mounted directly to an engine where there is an alternative installation option.
But in some applications, direct mounting is necessary, particularly where space or installation requirements leave no alternative.

That is where an Anti Vibration Kit can make a difference.
Preheat Engineering PVAC Anti Vibration Kits have been designed for applications where a heater needs to be mounted directly to a Clarke engine or where high levels of vibration are present.
The kit uses a mounting plate, U bracket and rubber anti vibration mounts to provide additional protection between the heater and the engine.
It is also retrofittable, making it a practical solution for existing installations.

Heat + Vibration + Time

Considering the environment an engine heater operates in is just as important as choosing the right heater for the job.
For Clarke engine applications where direct mounting is required, we would always recommend fitting an anti vibration kit to help protect the heater and extend its usable life.

+44 (0)20 8848 1912 [email protected]

ATEX Zone 2 explainedATEX is an important consideration when specifying equipment for environments where potentially exp...
01/10/2026

ATEX Zone 2 explained

ATEX is an important consideration when specifying equipment for environments where potentially explosive atmospheres may occur.
A Zone 2 area is a location where an explosive atmosphere is not expected during normal operation, but could occur occasionally and, if it does, would only be present for a short period.

This can occur where flammable gases, vapours or mists may be present.
Equipment installed in these environments therefore needs to be carefully selected. Electrical equipment must be appropriately designed and certified for the particular hazardous area so that it does not present an unacceptable ignition risk.

This is particularly important when heating fuel tanks.
Where fuel needs to be maintained at the correct temperature within an ATEX classified area, a standard heater may not be suitable for the application.
Preheat Engineering offers ATEX Zone 2 certified fuel tank heaters, with IP66 protection, providing a heating solution for applications where these requirements apply.

Potential applications include:
• Oil and gas
• Petrochemical facilities
• Fuel storage and distribution
• Chemical processing
• Gas processing
• Biogas and anaerobic digestion
• Offshore and marine environments
• Industrial power generation

The important consideration is that selecting a heater is not simply about achieving the required temperature.
The operating environment, hazardous area classification and equipment certification all need to be considered.
The right heating solution starts with understanding the application.

+44 (0)20 8848 1912 [email protected]

BIOFUEL IS GREENER… BUT WHAT HAPPENS WHEN IT GETS COLD?Renewable and biofuels are often discussed as part of the move aw...
23/09/2026

BIOFUEL IS GREENER… BUT WHAT HAPPENS WHEN IT GETS COLD?

Renewable and biofuels are often discussed as part of the move away from fossil fuels, but engineers must also consider temperature.

As fuel gets colder, its physical properties can change. Lower temperatures may increase viscosity and, in some fuels, cause waxing or crystallisation. This can restrict fuel flow and create challenges for reliable engine starting and operation.
This is especially important for equipment that must be ready when needed, particularly when installed outdoors or exposed to low temperatures.

The Role of Fuel Tank Heating
The purpose is not simply to make the fuel hot, but to maintain it within the temperature range required for reliable operation.
A correctly specified fuel tank heater can help maintain fuel temperature and reduce cold-weather problems. The right solution depends on the fuel type, tank size and design, operating environment, required temperature, and application duty cycle.

At Preheat Engineering, we design and manufacture heating solutions for engines, fuel tanks, and other critical applications.

When temperatures drop, reliable fuel flow matters. Good engineering considers the conditions before the engine ever needs to start.

+44 (0)20 8848 1912 [email protected]

The part of a heater you don’t see could make maintenance much easier.Imagine having to drain a large tank or sump just ...
17/09/2026

The part of a heater you don’t see could make maintenance much easier.

Imagine having to drain a large tank or sump just to service a heating element.
Not exactly a quick maintenance job.
For large generators, marine applications and other equipment where tanks or sumps contain significant quantities of coolant, accessing a conventional heating element can create unnecessary disruption.

That’s where a PEREGRINE YP-Type withdrawable element pumped coolant heater can make a difference.

The withdrawable element can be removed for servicing or replacement without the need to drain the tank or sump.

The integrated pump forces heated coolant around the engine, making the YP-Type heater suitable for large diesel engines and other high-wattage applications where heat needs to be transferred quickly.
That can mean less disruption to the equipment, easier access for maintenance and reduced fluid handling. It can also help simplify maintenance on installations where one or more heaters are required.

Good engineering isn’t only about what happens when equipment is running.
It’s also about what happens when something needs servicing.

Sometimes, the best engineering decision is the one that makes maintenance easier.

+44 (0)20 8848 1912 [email protected]

More components doesn't necessarily mean more energy wastedWhen it comes to engine heating, it is not simply about produ...
10/09/2026

More components doesn't necessarily mean more energy wasted

When it comes to engine heating, it is not simply about producing heat.
It is about getting that heat where it needs to be.

A pumped coolant heater incorporates a pump to circulate heated coolant around the engine or system. This can be particularly important in larger or more complex applications where effective heat distribution is required.

The circulation of heated coolant can be particularly beneficial in a number of applications.
Larger engines may need heat distributed throughout a greater volume of coolant.

Higher wattage installations may require effective heat transfer.
Some systems need heat transferred quickly around the engine.

Additional heat exchange points may also need to be supplied with heated coolant.
Passenger compartment heating can be required in ambulances and specialist vehicles.
In remote oil and gas applications, reliable engine heating can also be essential in demanding environments.

A standard heater may be perfectly suitable for one application.
A pumped heater may be the better solution for another.

It is not about choosing the biggest heater or simply adding more power.
It is about choosing the right heating system for the job.

Engine size, coolant volume, installation configuration, required temperature and heat transfer requirements can all influence the most suitable solution.

At Preheat Engineering, our focus is on understanding the application and providing the heating solution that works effectively for it.

+44 (0)20 8848 1912 [email protected]

Winter failures don’t start in winter. They often start months earlier.By the time temperatures drop and a diesel engine...
03/09/2026

Winter failures don’t start in winter.

They often start months earlier.

By the time temperatures drop and a diesel engine struggles to start, fuel systems begin to gel or equipment starts experiencing unexpected downtime, the underlying problem may already have been developing.

That’s why now is the time to prepare.

Checking heating systems, fuel tanks, fuel lines, filters, electrical connections and other cold weather equipment before winter arrives can help identify potential problems before they become costly breakdowns.

At Preheat Engineering, we believe effective winter preparation is about more than simply adding a heater.
It’s about understanding where heat is needed, how much is required and how the system needs to operate in the real world.
Don’t wait for the first cold morning to find out your equipment isn’t ready.

Winter preparation starts now.

Not all pre-heating is the sameWhen someone says, “We need a heater”, the next question isWhat exactly are you trying to...
26/08/2026

Not all pre-heating is the same

When someone says, “We need a heater”, the next question is
What exactly are you trying to heat?

At Preheat Engineering, we manufacture different heating solutions because the location and method of applying heat matter.

Engine coolant – heating and circulating coolant to pre-condition an engine.
Fuel tanks – applying heat where it is needed to help prevent fuel from waxing or gelling.
Oil sumps and tanks – using direct heating where warming the oil itself is the priority.
AdBlue/DEF – requiring a heating solution designed specifically for the application and the properties of the fluid.

The right solution isn't necessarily the heater that produces the most heat.
It’s the one that delivers the right amount of heat, in the right place, in the right way.

That’s why at Preheat Engineering, we don’t just manufacture heaters.
We engineer heating solutions around the application.

If you’re looking at a pre-heating requirement and aren’t sure which approach is best, our team can help you work through the options.

Take a look at our catalogue to see the range of solutions we manufacture:

Preheat Engineering Catalogue -
https://preheat.co.uk/wp-content/uploads/2026/03/Preheat_Eng_Digital_catalogue_26.pdf

Hotter summers. Drier conditions. Greater fire risk.The extreme temperatures we’ve experienced this summer have been dif...
20/08/2026

Hotter summers. Drier conditions. Greater fire risk.

The extreme temperatures we’ve experienced this summer have been difficult to ignore.
With repeated heatwaves, prolonged dry conditions and temperatures reaching 38.1°C in the UK, wildfires have become a very real and devastating consequence.
This year we’ve seen homes destroyed, communities evacuated and firefighters working in exceptionally challenging conditions. Across England and Wales, wildfire numbers have already surpassed previous records.

And as summers become hotter and drier, fire protection and emergency preparedness become increasingly important.
For sites that rely on fire pump systems, the pump needs to be ready to perform when it is needed.

Our Peregrine Fire Pump Coolant Heaters & Engine Kits have been specifically designed for fire pump applications, helping maintain the correct engine coolant temperature and prevent false alarms on the fire pump control panel.
Our 230V heaters can also be supplied as complete engine fitting kits, including relevant mountings, fittings, hose and anti-vibration components.
Compatible with:
• Clarke John Deere
• Clarke Iveco
• Clarke Detroit Diesel Firedriver engines

It may be a small component within a much larger fire protection system, but reliability matters when that system is called upon.

A useful lesson we’ve learned about installing engine heatersAt a recent event, we were discussing engine heater install...
13/08/2026

A useful lesson we’ve learned about installing engine heaters

At a recent event, we were discussing engine heater installation with an experienced engineer, and one important point came up that’s worth sharing.

When a new engine heater is installed, the engine should be run to operating temperature before the heater is energised for the first time.

Running the engine circulates coolant through the system and helps purge any air introduced during installation.

Air pockets can restrict coolant flow through the heater and pipework. If the heater is energised without adequate coolant flow, the heating element can become exposed to air, potentially causing it to overheat and fail prematurely.

Run the engine - circulate the coolant - purge the air - check the system - then energise the heater.

A small but important step that can help protect the heater and ensure it operates correctly.

At Preheat Engineering, our PEREGRINE and FALCON heating systems are designed and manufactured in the UK for a range of engine and generator applications.

Address

Unit A2, Deseronto Trading Estate, St Mary's Road, Langley
Slough
SL37EW

Opening Hours

Monday 9am - 5pm
Tuesday 9am - 5pm
Wednesday 9am - 5pm
Thursday 9am - 5pm
Friday 9am - 5pm

Telephone

+442088481912

Website

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