Home Energy Field Notes

Building science articles written from real field experience โ€” not manufacturer talking points. Practical guidance from a BPI-certified building analyst with 10 years in residential energy performance.

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Written by Rick Powell โ€” BPI Certified Building Analyst

NCI Credentialed HVAC Technician ยท CSLB Licensed Contractor ยท CalCerts Trainer & Rater ยท CBPCA Instructor ยท 10 years residential energy performance work. Trained through California's Million Solar Roofs Program.

All Articles

What to Expect From a Professional Home Energy Audit

Not all audits are the same. Here is what a complete diagnostic-grade audit actually covers โ€” and what questions to ask to make sure you're getting it.

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How to Find Attic Top Plate Bypasses Without a Thermal Camera

Top plate bypasses are one of the most consistently overlooked air leakage sources in older homes โ€” and you can find them with a flashlight.

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What a Blower Door Test Actually Tells You About Your Home

A single number that makes invisible air leakage visible and measurable. Here's what CFM50 and ACH50 mean โ€” and how to use the results.

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Why a High-SEER Air Conditioner Won't Fix a Leaky Home

SEER is a lab rating, not a field rating. Duct leakage, building envelope air leakage, and improper sizing all reduce real-world performance below the nameplate number.

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Duct Leakage: Why 30% of Your Heating May Be Going Nowhere

In many homes, a significant share of conditioned air never reaches the living space. Here is how to measure it and what to do about it.

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Combustion Safety Testing: The Check Most Contractors Skip

Before doing any air sealing on a home with gas appliances, a combustion safety assessment is essential โ€” here is why and what it covers.

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Sealing Basement Rim Joists: The High-Impact Fix Most Homeowners Skip

Rim joists are wide open to the outside in most older homes. Sealing them properly is one of the highest return-on-investment improvements available.

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R-Value Explained: Why the Number on the Bag Isn't the Whole Story

Labeled R-value and installed R-value are often very different. Here is what affects real-world insulation performance โ€” and what actually matters.

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Crawl Space Encapsulation: When It Makes Sense and When It Doesn't

Encapsulation is one of the most aggressively marketed home improvements. Here is an honest look at when it works, when to be cautious, and what to verify first.

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Why Your Attic Comes First

The attic is where most homes lose the most energy โ€” and it's the best place to start any home energy improvement project.

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The Most Common HVAC Upgrade Mistake

Replacing the equipment before fixing the building envelope is the most expensive mistake homeowners make in home energy improvements.

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Air Sealing: The Hidden Fix That Changes Everything

Air sealing is the improvement that makes every other improvement work better โ€” and the one that contractors are least likely to mention on their own.

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The Honest Truth About Window Upgrades

New windows are one of the most popular home improvements โ€” and one of the worst values for energy savings. Here is what the math actually shows.

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How to Read Your Utility Bill Like a Building Analyst

Your utility bill contains more information than just the amount due. Here is how to read it to understand what your home is actually doing.

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Before You Go Solar: What Every Homeowner Should Check First

Solar panels generate electricity โ€” they don't reduce how much energy your home wastes. Here is what to fix before solar so you don't overbuy on panels.

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