A Cold Climate Construction and Energy Blog
An energy audit is an inspection and analysis of how a building uses energy. To get an accurate analysis, tools are needed to perform testing. You would think that a blower door and thermal imaging camera would be my most commonly used tools during an audit, I do use them often, but there are a couple I used more. This posting is all about my energy auditing toolbox. Continue reading “Energy Audit-Tools of the Trade”
Whether you are using equipment from Minneapolis Blower Door, Retrotec, or any other blower door manufacturer, one of the first steps in conducting a blower door test is to measure the home’s floor area, volume, and surface area. Coming up with the floor area is the simplest, length times width. Calculating volume also isn’t hard, width times length time height, simple right? Not always, getting the volume of a geodome or a complex cathedral ceiling often takes some time. Continue reading “Energy Audit-Measuring for Blower Door Testing”
A blower door is an expensive tool. A full kit including frame, panel, fan and manometer will cost more than $3500. Add in the other tools for finding air leaks and you could easily drop over $5000. And then you still need to have some training to understand how to operate and interpret the results. Continue reading “Energy Audit-Homemade Blower Door”
Occasionally, when conducting energy audits and assessments, a customer will make a statement to the effect that they believe their windows are the main issue with why they are experiencing high energy costs. They are hoping to replace all their windows to lower the heating (or cooling) bills. Continue reading “Energy Audit-Really Good Windows”
I’ve talked about blower door testing several times on Green Building Advisor and on this blog. This discussion will dive deeper into blower door testing, when it should be completed, the different tests done with the blower door, and interpreting the information. Continue reading “Energy Audit-Blower Door Testing-A Deep Dive”
Most of us by now know what a blower door is. A tool to measure the air tightness of a house. I’ve owned my Minneapolis Blower Door since 2009. Many states have adopted mandatory tightness testing on all new construction. In my area, the minimum is three air changes per hour at 50 Pascals (3 ACH50), Continue reading “Energy Audit-Advanced Blower Door Testing-Zonal Pressures”
High Voltage, the first thing that comes to mind is AC/DC’s 1976 album of the same name. (I was 7 when that album was released.) An awesome first album from a band that eventually becomes one of classic rocks best. But high voltage can be a big problem with electronics and electrical equipment in houses and businesses. My brother, who is an electrical engineer and master electrician, gave me the idea for this blog post. He had to recently trouble shoot a problem. Continue reading “Energy Audit-High Voltage”
I recently blower door tested the tightest new home I have tested to date. .82 air changes per hour at 50 pascals (ACH50), nearly one-quarter of the code required 3 ACH50 requirement. After the test, the builder and I decided to open a window to see how much additional leakage it would take to get the home to the code minimum 3. Continue reading “Energy Audit-Comparing a Great Blower Door Test to a Code Minimum Test”
This is the first time I’ve been to this home. The first time I’ve met the people living in this home. But I know a little about them. I have two years of electricity use data to form a basic impression. They use a lot of power. Even more in the winter. Continue reading “The Energy Assessment”
I’ve been asked this question a few times. “At what point do I need to add mechanical ventilation to my home?” The answer, it depends. Continue reading “Energy Audit-Ventilation Recommendations”