Category: faq

The HEX is an indicator of a home’s energy performance. It is derived from monitoring the temperature at certain points over a period of time under controlled conditions.

  Stack Effect   “Stack Effect” is the common term used to describe the effect of excessive air leaks in the upper portions of a home, which causes underpressure

The stack effect refers to an underpressurized house, usually due to a loss of warm air to the attic space. This can be dangerous because when the air pressure

Without more information, I assume that the gas furnace is in the basement, the wood-burning fireplace on the first floor, on an exterior wall, that the home is

When you see a chart of two dependent variables where the curve forms a loop, or an “eye”, you are probably looking at some form of hysteresis. This

Unfortunately, the user manual of the Trane XR90 furnace offers no explanation of  what the blinking light means that can be seen behind a small hole in the

The value that you need to know is the output rating – the amount of energy that is available for heating or cooling the home. Trane is publishing

The answer depends, of course, on by how much the temperature is lowered. A number of things must be considered – plants or pets in the home, for

An article recently published in the Proceedings of the National Academy of Sciences, “Absolute humidity modulates influenza survival, transmission, and seasonality“,  by Jeffrey Shaman and Melvin Kohn, confirms what