Home energy guides
Straightforward guidance on where to start, what to upgrade, and how to make the numbers work for your home.
All guides
57 articles
Cold rooms, hot rooms: fix uneven temps before big upgrades
Weekend-level fixes to even out hot and cold rooms before spending on new HVAC or windows.
How We Calculate Costs & Savings: Our 2026 Methodology
How Home Energy Decisions builds its cost ranges and savings estimates: the DOE, EIA, NREL and ENERGY STAR data behind every number, the math, and where it can be wrong.
Home energy terms in plain English (from SEER2 to U-factor)
Plain-English guide to SEER2, HSPF2, AFUE, U-factor, SHGC, ACH50, kWh and other labels so you can compare quotes and plan upgrades.
Why Is My Energy Bill So High? A 20-Minute Diagnosis (2026)
Why your energy bill is so high, even all of a sudden. Rank the real culprits, run a 20-minute diagnosis with your meter and bill, and fix the right thing first.
Heat Pump Water Heater ROI: The Real 2026 Payback Math
Are heat pump water heaters worth it? Run the real ROI math for 2026 with installed costs, UEF efficiency, energy savings, payback examples, and the post-tax-credit reality.
How to read your utility bill without guessing
Translate your utility bill into kWh, therms, and actual costs per end-use so you can target the right upgrade.
Air sealing weekend checklist: plug the worst drafts in 2 days
Calm the worst drafts in a single weekend with a DIY air sealing plan that tackles doors, attic access, outlets, and penetrations—without opening walls.
Ready to take action?
Use our tools to turn these guides into a personalized plan for your home.