Heating & Cooling
Heating and cooling is the biggest line on most US energy bills, usually around half of it. This section covers the changes that actually move that number: insulation and air sealing first, then thermostats, heat pumps, furnaces and AC, and what each one costs to buy and run. Every guide shows the upfront price, the yearly saving and how long until it pays for itself, along with the federal and state rebates that apply.
Lower Energy Bills for Renters: 10 Fixes That Don’t Need the Landlord
Ten fixes that cost $5 to $150 each, come out when you move, and don't need anyone's permission. Together they can take $100 to $350 a year off the bills a renter actually pays.
