Direct gas fired air heaters

Direct-fired gas air heaters place cold air in direct contact with an open flame, generated by burning canister gases such as a propane-butane mixture. Hot air then flows out of the other end and into the space, warming the surrounding area.

This differs from indirect heaters, which use heat exchangers that contain the flame. This means the hot air produced is dry and does not feature byproducts of combustion, such as water and CO2.

One of the main benefits of a direct gas-fired air heater over an indirect heater is their ability to work at close to 100% efficiency. Because the air is in direct contact with the integral flame, these types of solutions are characterised by their high performance and low running costs.

Furthermore, in comparison to oil-fired heaters, gas-powered versions are typically:

• More cost-effective to purchase and run

• Lighter, making them more mobile

• Quicker and easier to maintain

However, it is important to note that direct gas-fired air heaters deliver moist hot air alongside products of combustion, meaning it is ineffective for drying materials. It also cannot be used in underground or compact environments for safety reasons.

The frequency of maintenance and service for a direct gas-fired air heater will depend on the specific unit, its application, and the environment you use it in. However, there are some usual staples when preparing your heaters for use:

• Read the operating manual

• Check if the power supply is damaged

• See if the gas hose is worn down

• Test the tightness of fittings for leaks

• Check your canisters are the right size

It is also recommended to have units serviced and inspected at least once a year.

At Dantherm Group, we have servicing partners and spare parts dealers based across Europe to provide quick, specialist support whenever you need it. Reach out if you would like support with your units, or for express guidance on how to operate and look after your specific unit.

Yes, but within limits. Direct gas-fired air heaters can be used in both indoor or outdoor environments, depending on the specific unit’s capabilities.

However, when used indoors it is important that the space is well-ventilated. This is because the moisture and combustion products generated by these heaters could place the health of people or animals in the area at risk. Plus, this moisture could cause unintended water damage and mould growth in the space when the heaters are switched off.

Within direct-fired gas heaters, air is placed in direct contact with an open flame. This is incredibly efficient and makes the design of these units far simpler. However, the byproducts of combustion this produces limits where these heaters can be safely used, and makes it ineffective at certain applications (e.g. drying plaster).

By using a heat exchanger to house the flame instead, indirect-fired gas heaters ensure that all air generated is clean and dry, at the cost of slightly reduced efficiency and performance.

Through our decades of experience and expertise in all forms of heating systems, we will advise you on whether a direct or indirect-fired solution is best suited for your needs and parameters. We will guide you through your options, and immediately put you in touch with your local supplier.

Yes. Direct gas-fired heaters are close to 100% energy efficient as the hot air it generates comes in direct contact with an open flame.

Furthermore, Dantherm’s European-quality craftsmanship and engineering means that our range of heaters is among the most efficient on the market. Speak to our experts for more on our heaters’ outstanding performance.

For all of our direct gas-fired heaters, VAT-registered companies can get a quote very quickly by pressing 'I want to buy' and inserting their enquiry and contact details.

However, you cannot carry out the entire purchasing process on our website. This is because due to the heater you wish to purchase and your area of residence, you may or may not need to buy through a local Dantherm Group representative. We will facilitate this when you use the 'I want to buy' button for the heater of your choice.

Yes, we can fulfil bulk orders across our range of direct gas-fired heaters. Get in contact with our experts or go direct to your local Dantherm Group representative to discuss the exact needs of your project and how we can meet your requirements.

At Dantherm Group, we pride ourselves on ensuring all solutions we supply are tailored to your precise needs. Our decades of experience and total control over the design and manufacture of our range of direct gas-fired heaters means we can provide you with bespoke, technical advice to ensure you receive the most efficient, effective and sustainable solution.

Reach out to our experts for a free, specialist consultation about your specifications so we can advise you on the most suitable heater.

This depends. For some standard direct gas-fired heaters, as well as their accessories and consumables, we offer day-to-day delivery. Larger or more complex orders will likely have a longer lead time.

For detailed information on when you can expect to receive the solutions you are interested in, please reach out to your local Dantherm Group representative.

No. All Dantherm Group direct gas-fired heaters included on this website are sold only to industry professionals either directly or via our extensive network of suppliers.

Yes. We have dedicated offices, suppliers and servicing partners based across Europe to provide timely, ongoing support across our entire range of direct gas-fired heaters. You can get in touch through our contact form and we will make sure your enquiry is handled by the office or service partner best suited to your needs.

We also have an extensive network of spare parts dealers throughout Europe, who are geared to provide you with a complete stock of spare parts for your heaters. We are committed to catering to your needs and getting you the required parts as quickly and easily as possible.

If you would like to become a supplier of Dantherm Group direct gas-fired heaters, please refer to our Supplier Code of Conduct.

Get in touch with our team via email or over the phone if you have an enquiry, and we will get back to you at our earliest convenience.