They are also outside of the home; propane is heavier than air so you don't want it inside where it will sink to the floor. Other companies are switching to R290 as well; Elmar Zippel of German ...

Germany’s Ait Group has introduced residential ground-source heat pumps using less than 150 grams of propane, based on ...

Heat pumps use environmental energy to provide us with heat. However, they generally require synthetic refrigerants, which contain environmentally harmful fluorinated greenhouse gases (F-gases).

The 2007 Roush propane F-150 has brought interest from many people and has sold several hundred vehicles and conversion kits so far. ... Roush Unveils the 2010 Liquid Propane Injected F-250.

According to the Pittsburgh Post-Gazette, the airport gas station and c-store, which celebrated its reopening June 8, features three compressed natural gas (CNG) pumps, one liquid propane pump and ...

Some school systems get on board with 'green energy' by turning to buses that run on liquid propane, not diesel fuel. Sign in or Subscribe See Offers. Sign In: Login. Forgot password?