Homeowners
Plain-language cost guides for homeowners: repair versus replace, running costs by state, safety, and how to read an HVAC contractor’s quote.
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Furnace Repair: What Actually Fails, and What It Costs
Most furnace repairs are a short list of wear parts. A symptom-to-part map, the failure that ends the furnace rather than starting a repair, and why no published…
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HVAC Capacitor: What It Does and How It Fails
A capacitor is one of the cheapest parts in an air conditioner and one of the most common failures. What it does, the types, how failure shows up,…
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What Is Central Heating? Forced Air, Boilers and Heat Pumps
In the US, central heating usually means a forced-air furnace, the main system in 74.42 million homes. How it works, what fuel it uses, federal minimums and how…
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How to Choose an HVAC Contractor: What to Verify First
Reviews and price cannot tell you whether a system will be sized and installed correctly. Nine checks you can verify, what a quote should include, and the FTC…
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What Is Central Air? How It Works and Who Has It
Central air is the main cooling system in 82.69 million US homes. How the cycle works, the parts, whether it uses gas, and the federal SEER2 minimums by…
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Radiant Floor Heating: Hydronic vs Electric, by the Numbers
Hydronic, electric and radiant air floors compared: what DOE’s guidance says about efficiency, running cost by heat source, the best floor coverings and the drawbacks.
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Geothermal Heat Pumps: Loops, Ratings and the Ended Credit
How geothermal heat pumps work, the four loop types, ENERGY STAR efficiency minimums, DOE’s lifespan estimates, and the IRS rule that ended the 30% credit after 2025.
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What Heat Costs by Fuel: Gas, Propane, Oil and Heat Pumps
The cost of a million Btu of delivered heat from every common system, at 2025/26 season fuel prices and federal minimum efficiencies, with the electricity price where a…
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Electricity Prices by State: Up in 45 of 51, 18.31 Cents a Kilowatt Hour
Residential electricity rose 4.9% to 18.31 cents a kilowatt hour in July 2026, up in 45 of 51 jurisdictions. Every state, from EIA’s Electric Power Monthly, updated each…
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Do Attic Fans Work? It Depends on Your Ceiling
A powered fan pulls air out of the attic, and where the ceiling below leaks, some of it is conditioned air from the house. Seal the ceiling and…