Pizza Equipment Ltd have many commercial gas pizza ovens for sale. Gas deck pizza ovens differ from electric deck pizza ovens in that you set one temperature for the entire baking chamber. The gas burners are under the bottom stone and the heat is channelled around the chamber. Because of this you nearly always buy single deck gas pizza ovens and stack them to make a double deck gas pizza ovens.
Moretti Forni manufacture a superb series of gas pizza ovens, the serieP models. Available in 3 sizes, these ovens have an electronic control panel for precise baking and are highly insulated to aid energy efficiency.
Also available are the Italian made GGF gas ovens, although cheaper, they still feature a digital thermostat but are economically engineered offering excellent value for money.