Warpfive Fans Blog

Stove Fans and Stirling Engines




Warpfive Glasshopper Stove Fan (Stirling engine)

October, 12, 2017, By admin | Leave a reply


The Warpfive Glasshopper Stove Fan has an ultra low start up temperature of only 70° C (158° F). Therefore it is an ideal choice for using on stoves that run cooler fires that are fed irregularly or for stoves with soapstone tops. Named the Glasshopper for its clear Borosilicate glass cylinder, you can see the moving displacer inside the engine – a great conversation piece. The Glasshopper propeller is 285 mm (11.2 inches) in diameter. It moves more than 260 CFM (cubic feet per minute) of air.

Clear glass cylinder shows inner workings of Glasshopper engine

Glass piston sleeve

2017 Warpfive Glasshopper Stove Fan

Warpfive Glasshopper Stove Fan

Rear view of Glasshopper Stove Fan


When you order a 2017 Warpfive Glasshopper Stove Fan you will receive a comprehensive tool kit and the option to purchase a dust cover. The dust cover is a beautiful clear dome which can be used while the engine is in use. Not only does it enhance the beauty of the engine, it also assists in keeping the stove fan ash / dust free. The dust cover is a useful addition when you clean your stove as it helps to prevent air borne ash contamination, and it can also be used to protect the engine while in storage during the summer months.

Warpfive Dust Cover fits all Warpfive Stove Fans

Additional features

The Warpfive Glasshopper Stove Fan comes with a Lifetime Guarantee. This guarantee can be registered with Warpfive Stove Fans online by simply recording the engine’s unique serial number. Every engine has its own individual serial number laserprinted on the top plate.

This beautiful Stirling engine is precision engineered from durable materials such as, Borosilicate glass, stainless steel, brass and alumimium. Its exceptional performance is optimised with a silver thermodynamic heat plate, precision bearings and other advanced materials such as graphite. The glass piston cylinder and low friction bearings ensure quiet operation and low maintenance.



The Glasshopper Stove Fan is hand-crafted, assembled and bench tested in the United Kingdom.