What should the humidity level in my home be during summer months in Iowa?
-Jaime in Iowa
Aug. 25, 2015
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Iowa Energy Center
Staff

Most people are comfortable with relative humidity percentages between 30% and 50%. Humidity above 65% [...]

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Are the average solar production rates provided in the Iowa Energy Center solar calculator based on a panel size of 1 kwh per sq meter of panel?
-Mike in Iowa
Jun. 30, 2015
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Bill Haman, P.E.
Program Manager

The Iowa Energy Center Solar Calculator provides the energy output of a PV system sized [...]

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I am planning to install a distributed generation system at my home and need to know how it can be connected to the grid and the rate at which the utility company will purchase my excess power.
-Iowa
Jun. 30, 2015
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Bill Haman, P.E.
Program Manager

All electric grid connected systems require the notification and interconnection agreement of the servicing electric [...]

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We operate a 42,000 sq. ft. beef processing facility. Are there programs available to economically assist us in switching from propane to a more renewable energy source?
-Phil in Iowa
Jun. 23, 2015
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Bill Haman, P.E.
Program Manager

There are several financial incentives for the construction of a renewable energy project at both [...]

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I have problems with mold and mildew, and have been told a vapor barrier would help. Do I ventilate or encapsulate?
-Wendy in non-resident
Jun. 19, 2015
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Bill McAnally
Independent Consultant

Simple ventilation alone exchanges air from inside the home with air from the outside. This [...]

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In an historical building, is it better to insulate the roof deck when reroofing or insulate the attic space?
-Margaret in Iowa
Jun. 10, 2015
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Bill McAnally
Independent Consultant

This is a common question when working with historical buildings in Iowa. The biggest issue [...]

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