Heating & Cooling
How Much Does a Heat Pump Cost to Buy, Install and Run?
What a heat pump costs to buy, install and run, by type and home size, plus what happened to the federal tax credit and which rebates remain.
All guides
Every guide on the site, newest first. Each one lists the public data it was built from.
Owning a Home
How Much Does a Home Security System Cost?
What a home security system costs to buy, install and monitor, with and without a contract, plus what FBI data says about burglary where you live.
Energy Bills
Solar Panel Payback Period by State in 2026
How many years rooftop solar takes to pay for itself in every state, and why the price of electricity matters more than the sunshine.
Home Repairs & Appliances
How Much Does Attic Insulation Cost, and What Does It Save?
What attic insulation costs by size and type, the R-value your state calls for, what air sealing and insulation save, and how long they take to pay back.
Owning a Home
Average Homeowners Insurance Cost by State in 2026
Average homeowners insurance premiums for all 50 states and DC, from the latest NAIC data, with a same-coverage comparison.
Energy Bills
How to Read Your Electric Bill: kWh, Delivery Charges and Fees
What every line on your electric bill means, from kWh to delivery charges, riders and taxes, and how to find your real price per kWh.
Home Repairs & Appliances
How Much Does It Cost to Run a Refrigerator?
What a refrigerator costs to run per day, month and year: new and old models, a second fridge or freezer, and every state.
Home Repairs & Appliances
How Much Does a Sewer Line Camera Inspection Cost?
What a sewer camera inspection costs, what changes the price, when it is worth paying for and what the repairs cost if the camera finds a problem.
Heating & Cooling
How Much Does It Cost to Run a Furnace per Month?
What a gas, electric, oil or propane furnace costs per month and per hour, by state, climate and furnace size.
Energy Bills
How Much Does Charging an Electric Car at Home Add to Your Bill?
What home charging adds to your electric bill each month, by car, miles driven and state, and how it compares with gasoline.
Energy Bills
Why Is My Electric Bill So High? The Usual Causes, by the Numbers
Where a home's electricity goes, what each use costs, and why one bill runs far above another, from EIA data.
Heating & Cooling
How Much Does It Cost to Run Central Air Conditioning?
What a central air conditioner costs to run per hour, per month and per year, by size, efficiency rating and state, with the math shown.
Energy Bills
Electric Bill in Winter vs Summer: How Much It Changes by State
January and July electric bills in all 50 states and DC, which states pay more in summer, and the ten where winter costs more.
Energy Bills
How Much Do Solar Panels Cost in 2026?
The median price per watt, what a typical home system costs with cash, a loan or a battery, and how much each state's sun gives you for it.
Home Repairs & Appliances
How Much Does a New Water Heater Cost in 2026?
The installed price of every type of water heater, what each costs to run in your state, and which one costs least over 15 years.
Energy Bills
Winter Heating Costs 2026-27: What the EIA Expects for Gas, Electric, Propane and Oil
What the EIA expects homes to pay to heat this winter with gas, electricity, propane and heating oil, by fuel and region.
Energy Bills
Average Natural Gas Bill by State in 2026
Average monthly gas bills, use and price per ccf for all 50 states and DC, from the latest EIA data.
Heating & Cooling
Heat Pump vs Gas Furnace: Which Costs Less to Run This Winter?
The winter cost of a heat pump and a gas furnace in every state, with the break-even point, from U.S. EIA prices.
Energy Bills
Average Electric Bill by State in 2026
Average monthly bills, kWh used and price per kWh for all 50 states and DC, from the latest EIA data.