Planning a home project in Washington DC? This page brings together every cost guide we publish for the state — installed prices, yearly savings and payback for 2026 — plus the verified Washington DC rebate programs that can cut the bill.
In Washington DC, the swing seasons and real winters and summers shapes the energy year, and installation work here runs about 30% above the national average — both are built into every range below.
Home Project Costs in Washington DC at a Glance
| Project | Typical cost in Washington DC | Yearly savings | Simple payback | Guide |
|---|---|---|---|---|
| Central AC Replacement | $6,300–$12,700 | $335 | 28.4 years | Coming soon |
| Heat Pump | $8,350–$19,950 | $810 | 17.5 years | Coming soon |
| Attic Insulation | $1,800–$4,150 | $450 | 6.6 years | Coming soon |
| Roof Replacement | $9,650–$23,300 | $60 | — | Coming soon |
| Solar Panels | $18,650–$27,650 | $2,150 | 10.8 years | Coming soon |
| Tankless Water Heater | $3,300–$6,150 | $120 | 39.4 years | Coming soon |
| Replacement Windows | $7,700–$16,100 | $330 | 36.1 years | Coming soon |
Verified Rebates & Incentives in Washington DC
- DCSEU Heat Pump Rebates — Up to $5,000 for ENERGY STAR heat pumps — $1,000-$1,500 replacing electric heat, $4,000-$5,000 when switching from gas. DC Sustainable Energy Utility rebate for ducted and ductless mini-split heat pumps; top amounts need ENERGY STAR Most Efficient models. Installation by a DC-licensed contractor is required. Covers: Heat Pump. Source: DC Sustainable Energy Utility (DCSEU) — residential heating & cooling rebates
- DC Affordable Home Electrification Program (AHEP) — Up to $1,600 for insulation, air sealing and ventilation (income-qualified). Federal Home Electrification and Appliance Rebates (HEAR) funding delivered through the DCSEU. Households at or below 80% of area median income qualify first, and eligible whole-home electrification costs can be covered in full; the DOE Weatherization Assistance Program also funds insulation for income-qualified District households. Covers: Attic Insulation. Source: U.S. Department of Energy — DC Home Energy Rebates launch (DOEE/DCSEU)
- District of Columbia Solar Renewable Energy Credits (SRECs) — Market income of roughly $370 per MWh generated at 2026 prices (price moves with the market; the highest SREC prices in the US). Earn one SREC per MWh your system produces and sell it through a broker or aggregator; District systems earn SRECs for 15 years from installation. Covers: Solar Panels. Source: DC SREC market (Flett Exchange live pricing)
- DC Solar for All — Free rooftop solar, or a free community solar subscription sized to offset about 50% of the electric bill (income-qualified). DOEE program for households at or below 80% of area median income (or enrolled in programs such as SNAP, TANF, LIHEAP or SSI). Single-family rooftop places are limited and may be waitlisted; community solar subscriptions are free. Covers: Solar Panels. Source: DC Department of Energy and Environment (DOEE) — Solar for All
Amounts and rules change — confirm eligibility with the program before you sign a contract, and note that several programs require action before installation.
Figures compiled from public sources, updated October 2026. Local quotes vary — get 2–3 estimates.