Guides

Plain-English breakdowns of what home projects, energy bills, cars and tech hardware cost, what drives the price, and where people get talked into overspending.

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HVAC

Sep 24, 2026 Annual HVAC Maintenance Cost: What a Tune-Up Should Cost HVAC A real HVAC tune-up costs $90 to $220 per visit in 2026. See what's included, what the $59 specials actually sell, and which tasks you can do yourself. Sep 24, 2026 Central AC Replacement Cost: 2026 Pricing Guide HVAC Central AC replacement runs $5,500 to $12,000 installed in 2026. See tonnage sizing, SEER2 trade-offs, and itemized example quotes before you sign. Sep 24, 2026 Ductwork Replacement Cost: 2026 Pricing Guide HVAC Whole-house duct replacement costs $3,000 to $9,000 in 2026, at roughly $30 to $45 per linear foot installed. See why quotes vary so much and when sealing beats replacing. Sep 24, 2026 Gas Furnace Replacement Cost: 2026 Guide HVAC A new gas furnace costs $4,000 to $9,500 installed in 2026. See 80% vs 95% AFUE payback math, venting requirements, and three itemized example quotes. Sep 24, 2026 Heat Pump Installation Cost: 2026 Price Guide HVAC Air-source heat pumps cost $9,000-$22,000 installed in 2026. Ducted vs ductless pricing, what drives the spread, and why the 30% federal credit is gone. Sep 24, 2026 Heat Pump vs Gas Furnace: Real 2026 Cost Comparison HVAC At $1 per therm gas and 15¢ electricity, a gas furnace usually heats cheaper. When heat pumps win, when they don't, and the math to run yourself. Sep 24, 2026 How Much Does a Mini Split Cost? 2026 Price Guide HVAC Single-zone mini splits run $2,800-$5,500 installed in 2026. See per-zone pricing, BTU sizing, labor and electrical costs, and where quotes go higher. Sep 24, 2026 Mini Split vs Central Air: 2026 Cost Comparison HVAC A 3-zone mini split runs $7,000-$12,000 installed; central air for a ducted house runs $5,500-$10,000. Compare install, operating cost, and lifespan.

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How the numbers are built: our estimating methodology.