On the Move: Exploring Petrol and Diesel Air Compressors
Petrol and diesel compressors make compressed air practical where mains electricity is unavailable. The right choice depends on airflow, pressure, duty, starting method, mounting style and how the machine will be transported and used.
Why Choose an Engine-Driven Air Compressor?
Petrol and diesel air compressors remove the need for a mains electrical supply, making them particularly useful for construction, agriculture, roadside repair, mobile engineering, utilities and remote maintenance work.
But “mobile” does not mean every engine-driven compressor suits every job. A compact basemount compressor installed in a service vehicle has a different role from a receiver-mounted package intended to provide stored air for heavier intermittent demand.
Current Tanair Petrol & Diesel Routes
Tanair Petrol Basemount Compressors
Honda-powered compressors designed for van, trailer or custom installation where a receiver is supplied separately or not required.
Tanair Petrol Receiver-Mounted Compressors
Engine-driven compressor packages with integrated air storage for mobile or remote applications.
Tanair Diesel Basemount Compressors
Yanmar-powered industrial compressor packages for demanding mobile, site and service-vehicle applications.
Tanair Diesel Receiver-Mounted Compressors
Heavy-duty Yanmar-powered compressor and receiver packages for jobs where stored air and off-grid operation are both important.
Petrol vs Diesel Air Compressors
| Consideration | Petrol | Diesel |
|---|---|---|
| Typical use | Mobile repair, trades, agriculture, vans and lighter site work | Heavier site duty, industrial mobile work and demanding field use |
| Current Tanair engine route | Honda petrol | Yanmar diesel |
| Starting options | Recoil and electric-start variants depending on model | Manual/recoil and electric-start arrangements depending on model |
| Mounting | Basemount and receiver-mounted configurations | Basemount and receiver-mounted configurations |
| Best buying approach | Choose by CFM, pressure, receiver requirement and transport setup | Choose by CFM, pressure, duty, receiver requirement and site conditions |
Basemount or Receiver Mounted?
Basemount
A basemount compressor is attractive where the unit will be installed in a van, service body, trailer or custom frame. It keeps the compressor package relatively compact and allows the air receiver to be positioned separately if required.
- Good for vehicle installations
- Flexible receiver arrangement
- Compact packaging
- Useful where an existing receiver is already installed
Receiver Mounted
A receiver-mounted compressor combines air generation and storage in one package. Stored air can help with tools that have short bursts of higher demand and can reduce rapid cycling.
- Integrated air storage
- Simpler packaged installation
- Useful for intermittent pneumatic-tool demand
- Receiver size can be selected around the application
How Much Airflow Do You Need?
Compressor horsepower and receiver size are useful specifications, but the most important buying figure is usually delivered airflow in CFM. Add together the realistic air demand of the tools that may be used at the same time and allow sensible spare capacity.
Recoil Start, Electric Start & Speed Control
Recoil Start
Recoil-start engines keep the setup simple and avoid relying on an electric-start battery. They can suit mobile applications where simplicity is a priority.
Electric Start
Electric-start models make frequent starting more convenient, particularly on larger engines and vehicle-based installations.
Speed-Control Options
Selected petrol basemount models are available with speed-control arrangements designed to reduce unnecessary engine speed when full output is not required.
Choose Around the Operator
Starting method is not just a specification. Consider how often the compressor starts, who will operate it and where it will be mounted.
Where Petrol & Diesel Compressors Work Best
Safety: Engine-Driven Compressors Need the Right Environment
Petrol and diesel engines produce exhaust gases and heat. They should not simply be treated like an electric compressor that can be placed inside a closed workshop or van.
- Operate engine-driven compressors only where exhaust gases can disperse safely.
- Do not run petrol or diesel engines in enclosed occupied spaces.
- Maintain suitable cooling airflow around the engine and compressor pump.
- Secure the compressor correctly during vehicle or trailer transport.
- Follow appropriate fuel-storage and refuelling precautions.
- Keep guards fitted and maintain belts, hoses and fittings correctly.
- Fully depressurise the receiver before maintenance.
Maintenance Matters More in Mobile Applications
Mobile compressors often work in dustier, wetter and more variable environments than fixed workshop machines. Vibration, vehicle transport and outdoor conditions can also make routine checks especially important.
Engine Checks
- Engine oil level and condition
- Air-filter condition
- Fuel system and leaks
- Starting system
Compressor Checks
- Pump lubricant where applicable
- Belt condition and tension
- Receiver drains
- Hoses, fittings and guards
Petrol & Diesel Air Compressor FAQs
Which is better, a petrol or diesel air compressor?
Neither is automatically better. Petrol often suits lighter mobile and service applications, while diesel is commonly chosen for heavier-duty site use. Size by CFM, pressure, duty and mounting requirements first.
What is a basemount air compressor?
A basemount compressor is supplied without an integral air receiver underneath. It is useful for vehicle, trailer or custom installations where the receiver can be positioned separately.
What airflow is available from current Tanair engine-driven compressors?
Current petrol and diesel ranges include examples from around 15 CFM through to 41 CFM, depending on model and configuration.
Can petrol or diesel compressors be used indoors?
Engine-driven compressors produce exhaust gases and require an appropriate operating environment with safe exhaust dispersion. They should not be operated in enclosed occupied spaces.
Do I need a receiver-mounted compressor?
Not always. Receiver-mounted models are useful when stored air and a packaged setup are beneficial. Basemount compressors can be more flexible for vehicle and custom installations.
How do I work out the CFM I need?
Use the air consumption of the tools or processes that may run simultaneously, then allow sensible spare capacity. The Tanair Compressor Selector includes an airflow calculator to help.
Need Help Choosing Petrol or Diesel?
Tell us the tools you need to run, required CFM and pressure, whether you want basemount or receiver mounted, and how the compressor will be transported.
Call 0121 753 3330