Unfortunately, you cannot specifically quantify savings. It is very dependent upon one's situation. Let's say someone leaves their thermostats at 62 degrees all around their facilities...compare that to someone who is keeping temperatures at 70 degrees...now, consider facilities will have anywhere from 1 furnace, to 40 or more furnaces. There's also the types of furnaces being used to consider: high efficiency, over-head furnaces, furnaces that are 3 years old...others that are 20...and of course, how well insulated is the building? How high are the ceilings if wire needs to be run?
On the one hand, you may think the facilities keeping their thermostats at 70 will realize a faster return...but that's not safe to assume given just a few of the above contingencies...add to that that we are also dealing with manufacturers...we just did a quote for a place with 36 furnaces. Different parts of their facilities run on different shifts. They are also running furnaces that heat closets...needlessly. Considering things like that, and the fact places with multiple furnaces will have multiple meters, we can't be specific.
But, it is safe to assume that if the run time on your furnaces is cut by 30%, you can expect your bill to go down correspondlingly. Let's say that a 30% savings is realized...okay...let's say you have a recurring gas bill of $28,000 (not unlikely if someone has over-head furnaces all over the place...like the manufacturing plant we just did a quote for). You can expect to see a savings of $8,400.00 That customer may save enough money on their first bill to cover the cost of Furnace-Mate.
Let's say someone else buys Furnace-Mate...they also cut their furnaces' run time by 30%...their monthly bill is $600.00 currently...they will save $180 per month...nothing to sneeze at, but their pay back will take longer.
It would be nice to sell something that could be pulled out of a box...unfortunately, it's not something you'd find on a shelf. Each Furnace-Mate is an industrial engineered *system* designed for each specific customer.