Gas or electric coffee roaster?
The choice often makes itself once you know what supply your site has. Where it does not, compare installation, control, running cost and the rules each fuel brings.
6 min read Updated 9 October 2026
Most production drum roasters run on natural gas or LPG; a growing number of electric machines are available, and small roasters are often electric. Neither is better in the abstract. The right one depends on your site's supply, your roast style and your running costs.
Side by side
| Gas (natural gas or LPG) | Electric | |
|---|---|---|
| Heat response | Fast changes in burner output | Varies by design; modern elements and controls can be responsive, older designs slower |
| Supply needed | Gas supply of adequate pressure and flow, or LPG cylinders or a bulk tank | Large electrical supply; production sizes often need 3-phase |
| Installation | Gas Safe registered engineer; ventilation and flue rules | Electrician; possibly a supply upgrade from the network operator |
| Running cost | Depends on gas tariff and burner efficiency | Depends on electricity tariff, which per kWh is usually higher than gas |
| Emissions at the site | Combustion products plus roast smoke | Roast smoke only, no combustion gases from the roaster itself |
| Afterburner | Often gas-fired too | May still be needed for smoke and odour; can be electric or catalytic |
Questions to settle
Before you choose
- What supply does the unit have now, and what would an upgrade cost and take?
- What is the roaster's rated input in kW, and the afterburner's?
- What is your tariff per kWh for gas and electricity, and the standing charges?
- If LPG: where would cylinders or a tank go, and who supplies it?
- Will your landlord and insurer accept the fuel and its storage?
Gas safety
In Great Britain, work on gas fittings must be carried out by an engineer on the Gas Safe Register, under the Gas Safety (Installation and Use) Regulations 1998. Keep commissioning and service certificates; your insurer will ask for them.
Running cost, simply
Energy per batch = average burner or element power in kW x batch time in hours, plus warm-up and afterburner use. Multiply by your tariff. Ask the maker for typical consumption per batch at your size, then check it against your meter in the first month.
Where Roastnet helps
Questions roasters ask
- Are electric coffee roasters good enough for production?
- Many roasteries produce on electric machines. Check the maker's control, the supply you need and the running cost at your tariff.
- Can I run a gas roaster on LPG?
- Many models offer LPG versions. Burners are set up for one gas type; conversion must be done by a qualified engineer following the maker's specification.
Official sources
Rules change. These sources were checked on 9 October 2026; always confirm the current position with the body that publishes them before you act.
Read next
Choosing a coffee roaster: batch size, fuel and design
Size the roaster from the volume you expect in year two or three, not from what you sell today, then let fuel, site and support narrow the field. A buyer's framework, not a brand list.
Roastery premises: planning use, smoke, odour and the lease
The questions to settle before you sign a lease on a roastery unit: what the planning use allows, whether smoke and odour will be a problem, and whether you can get gas, power and a flue where you need them.
Afterburners, catalytic units and roaster emissions
Smoke and odour are the most common reason a roastery gets into trouble with neighbours. What afterburners and catalytic units do, what they cost to run, and how to decide whether you need one.
Run the roastery from one place
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