About SEZU
Who writes these guides, how they're researched, and how the site pays for itself.
SEZU — Smart Energy Zone US — was founded on a simple premise: home energy decisions have gotten more complex, and homeowners deserve clear, honest information to navigate them.
Between whole-home battery backup systems, heat pump upgrades, and the growing ecosystem of smart home automation, the average homeowner is asked to evaluate technology that didn't exist a decade ago, often with a five-figure price tag attached. Marketing materials from manufacturers and installers rarely tell the whole story. Our goal is to fill that gap.
Who writes SEZU
Guides are published by the SEZU Editorial Team. SEZU's editors research home energy upgrades using public data from the DOE, EIA, ENERGY STAR and utility program filings — never installer marketing material.
We are not installers, contractors, or manufacturers. We sell no equipment, take no referral fees from installers, and pass no reader details to lead-generation companies. If that ever changes, it will be disclosed on this page before it appears anywhere else on the site.
What we cover
- Solar & Battery Storage — solar-plus-storage pairing, whole-home battery backup, and how to evaluate whether solar and storage make financial sense for your home.
- HVAC Efficiency — heat pumps, insulation, and HVAC upgrades, evaluated on efficiency, cost, and real-world performance across different US climates.
- Smart Automation — smart thermostats, plugs, and automation routines that produce real, measurable energy savings — not just novelty.
How we research
Every guide is built from publicly available primary sources rather than promotional copy — principally the U.S. Department of Energy, U.S. Energy Information Administration, ENERGY STAR, NREL, the IRS for tax-credit questions, and DSIRE for state and utility incentive programs. Where a guide leans on a source, it is listed at the bottom of that article.
Where we say we don't know
Incentive programs — particularly federal tax credits — have been reported inconsistently, and the amounts involved run to thousands of dollars. Where the public record genuinely conflicts, our guides say so plainly and tell you to confirm with the IRS, your state energy office, or a licensed tax professional rather than quoting a figure we can't stand behind. We would rather be useful than confident.
Corrections and updates
Articles carry a published date and, where they have been substantively revised, an updated date. If you find something wrong or out of date, tell us at minchangyi@me.com — corrections to figures are made directly in the article and the updated date is moved.
Our tools
Our calculators are deliberately simple and show their working on the page. They are back-of-envelope starting points designed to make you a better-informed buyer before you request quotes — not a substitute for an installer's load calculation or a written quote. None of them ask for your contact details.
How SEZU is funded
SEZU is supported by advertising, including Google AdSense, and may participate in affiliate partnerships. Advertising is sold programmatically: advertisers cannot buy coverage, influence a recommendation, or review a guide before publication. This is what keeps our guides free for readers. See our Terms of Service for our full advertising disclosure and our Privacy Policy for details on how data is collected and used on this site.
Not professional advice
Everything on SEZU is general information. It is not financial, tax, legal, electrical, or engineering advice, and it cannot account for your specific home, climate, utility rates, or eligibility. Consult a licensed professional before committing to any energy upgrade.