Looking at the thermal IR image, there doesn't appear to be much of a difference, and this is compared to a single flap door. I realize this page was supposed to compel me to buy the Freedom door, (which I was actually sold on...) but I think this page just made me question how big the advantage really is over other competitors.

If you aren't comparing this door against a double flap door, then those results must not be that compelling. Comparing your door to a single flap is just setting up a game you can't lose (and didn't win by that much...) You say claims of double flap doors can not be substantiated, yet you had the tools to do so! Hmmmmmm...

Our product has one flap that swings both in and out; therefore we consider our pet flap as a single flap design. We do however employ a one way magnetically engineered flap jam. This is what makes our flap seal tight. Most other pet door manufacturers use some sort of brush lined wipers that have a known linear air leakage rate applied to these products. While double flap dog doors (i.e. two flaps that swing both in and out) may sound like a better barrier, the test results suggest if one pet flap is leaking air, then it follows that the second pet flap will as well.

Even if our pet flap is configured to a two flap design (which we could build), we know when both flaps are in the closed position without air leaking we might slightly increase the overall R value, but the R value becomes null and void every time your pet passes through the pet flap. Dead-air space between two flaps cannot be achieved (like the dead-air space in a double paned window) because the air is constantly being exchanged and circulated when pets pass through this type of pet flap system. Therefore, there is no increase in energy savings to be gained, no matter how many flaps you put on a pet door.

The thermal imaging part of our test may not convince all readers of our energy efficient prowess. However, the difference between .35 of our product and the .25 of our competitor’s product is very significant in your energy bill.

Please keep in mind this test examines the thermal barrier itself and if there is air leakage it will also show that. In this test the outside temperature of the doors were exposed to 71.9 degrees, and the inside temperature of the doors was 65.7 degrees for a difference of only 6.2 degrees. This test simulates a house that is cooler on the inside than on the outside and depending on where you live in the country the cost of this energy loss can add up annually to a substantial dollar amount. Please keep in mind that most of us live where the annual temperature variance between the inside and outside of our home can radically fluctuate. We do not sell too many pet doors to Hawaii based on thermal barrier of our flap system. To my knowledge there is no other material made that is thin, flexible and safe for pets to use to produce a greater thermal barrier.

Our claim and point of difference concerning energy efficiency is in the first part of this test (The Air Leakage test). The Air Leakage test simulates an air pressure differential commonly produced by energy efficient homes built today ( sealed properly), with a bathroom or kitchen exhaust fan creating a vacuum on the inside of the home and/or the outside atmospheric pressure difference ie. windy days or approaching storms.

What is compelling is the fact that our product did not have any detectable air leakage. The device used to perform this test is annually certified according to Energy Star standards to qualify homes tested for the energy tax credit. The other pet door product that claims to be energy efficient did leak a substantial amount of air. If you look at the upper right side of the devise on the DG 700 Pressure & Flow Gauge, please note LO as the reading taken by the device while our product was being tested and compare that to the “World’s Best Selling Pet Door”. Notice the number 19 in that window. The number 19 stands for the amount of cubic feet of air leaking past the pet flap per one square foot per minute. If the air temperature is significantly different from the inside and outside of your home this exponentially increases your energy loss. Think of 19 cubic feet of air as the amount of space inside a 19 cubic foot refrigerator/freezer that is leaking air into or out of your home every minute, of every hour, of every day...you get the picture.

There are two other things I would like to add clarity to. First: the product we manufacture is called “Freedom Pet Pass TM”. The “Freedom Door” is a “PetSafe” product and the two should not be confused. Our good name and reputation based on honesty, integrity, and truth in advertising is a great source of pride to us. Second: As far as a game I can’t lose. We have two energy star partners involved, one selling our products and one independently testing our products (yes, we pay for our tests). I invite any other pet door manufacturer to perform their own tests against our pet door, by using test methods recognized by a energy star partner that is certified to validate the claim of an energy efficient product and post their own results. I am also open to any other suggestions or questions you or anyone else may have to help you make a better informed decision.

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