Observed arrival · 2026-10-30
HeatMath puts household heating costs on one scale
A collection of heating-fuel guides and calculators compares firewood, propane, and oil costs, estimates fuel use, and explains firewood measurements.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Households comparing wood, propane, and oil heating
- Worth noticing
- One example converts a $250 cord into $17.86 per delivered MMBtu, using a 0.70 efficiency assumption.
Field notes
The page organizes its material around practical household questions, including how much wood a winter might require, whether a delivery measures up, and how long a tank could last. Its comparisons use delivered heat as a common unit and include example assumptions, such as a 0.70 efficiency factor; the extract does not establish how the linked calculators behave in use.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
◎NicheUnusually specific use
One card from the complete issue