Here is a NON-scientific test of two densified wood fire logs. Perform your own tests in your own burning device because results will vary. This way you can make an informed purchasing decision based on your own needs and desired outcome.

This test: (4) 5 lb. Home Fire Prest Logs with a half pound fire starter (right), and (4) 3.5 lb. Smartlogs with a half pound fire starter (left).

One half hour after ignition. Smartlogs are starting to "accordian". Home Fire Prest Logs remain whole.

One hour after ignition. Smartlogs have broken in half and have continued to "accordian". The Home Fire Prest Logs remain whole.

Two hours after ignition. Smartlogs are pretty much done while Home Fire Prest Logs are still going strong.

Two and one half hours after ignition the Smartlogs are almost completely gone, while Home Fire Prest Logs are still heating.

Three hours after ignition the Home Fire Prest Logs are still heating (even though there is little flame, this stage resembles coal burning). At this point you can re-arrange or break down the logs to bring up the flame or add logs to extend the fire. For this test we will break down the logs.

Four hours after ignition, Home Fire Prest Logs are still heating.

Five hours after ignition, Home Fire Prest Logs are still heating.