Recommended setting for a residential water heater.
120 degrees F
Joist
A horizontal wood framing member that supports a floor or ceiling.
Rafter
a roof beam that follows the roofs slope
Sill Plate
Sits on the foundation wall. Usually gasketed in new construction. In existing
homes, it is sealed
Balloon Framed Construction
Features wall studs that may be two stories high. Studs usually have no top
plate or bottom plate. Stud cavities are often open to the basement and to the
attic. Common in wood frame homes built before 1940.
What is the first priority to improve air quality?
When feasible, removal of the contaminant is best. Next, ventilation
, What is the recommended CFM for a bathroom fan?
50 CFM
Magnehlic Gauge
Analog pressure gauge in pascals, inches of water column, or psi depending
on which version you buy.
Combustible Gas Detector (CGD)
Helps detect the location of gas leaks.
Combustion Analyzer
Measures the content of flue gases. Used in BPI testing to get carbon
monoxide readings.
What percentage of household energy usage is for heating?
29%
Heating and cooling, varies with outdoor temperatures
Seasonal Consumption