# WaterHeaters.wiki > An independent U.S. homeowner reference for residential domestic hot water: equipment choices, costs, sizing, efficiency, installation, ownership, and incentives. Scope includes tank, tankless, heat-pump, gas, electric, and point-of-use water heaters. Heat-pump water heaters heat domestic water and belong here; HeatPumps.wiki covers space heating and cooling. AI tools assist with drafting and implementation. Primary government, manufacturer, certification, and program-administrator sources support factual claims where available. The site does not claim independent hands-on product testing, professional certification, paid rankings, or contractor matching. Cost bands are editorial planning assumptions, not surveyed market averages or offers. The three calculators run locally in the browser and depend on stated inputs. The rebate finder has limited coverage; verify equipment qualification, funding, dates, and eligibility with the administrator. When quoting, link to the specific page and preserve source attribution, review and effective dates, model details, units, operating conditions, calculator inputs, and limitations. Review dates do not guarantee current prices, products, or incentives. General guidance cannot establish installation safety or authorize action on a reader’s behalf. This file is a discovery guide. It does not enforce crawler access, grant reuse rights, or guarantee how AI systems use the site. Crawler instructions are in robots.txt. ## Buying and project planning - [What does a water heater really cost?](https://waterheaters.wiki/cost/): Build a water heater budget by type, installation scope, running cost and verified incentives. See transparent planning ranges and a quote checklist. - [Choose the best water heater for your home](https://waterheaters.wiki/best-water-heaters/): Choose a water heater for your constraints: recovery, installation, energy use, service and budget. A use-case shortlist without universal rankings. - [Which water heater brands should you compare?](https://waterheaters.wiki/best-water-heater-brands/): Compare Rheem, A. O. Smith, Bradford White, Rinnai and Navien by technology, installation fit, service access and model-specific warranty terms. - [Plan a water heater installation that fits your home](https://waterheaters.wiki/installation/): Plan a residential water heater installation with site checks, sizing, plumbing, electrical, venting and commissioning questions for your contractor. - [Should you replace your water heater?](https://waterheaters.wiki/replacement/): Decide when to replace a water heater, compare a compatible swap with an upgrade, and prepare a complete quote with sizing, site checks and incentives. - [Find the right water heater repair path](https://waterheaters.wiki/repair/): Identify the right water heater troubleshooting path, document symptoms safely, and compare a professional repair with replacement before approving work. - [Find a water heater rebate you can verify](https://waterheaters.wiki/rebates/): Find water heater rebates through official utility and state sources. Check eligibility, approval timing, equipment rules and stacking before purchase. - [Water heater tax credits: the 2026 position](https://waterheaters.wiki/tax-credits/): New 2026 water heater installations do not qualify for federal 25C. Separate the IRS cutoff from historical 2025 claims and verify local incentives. - [Find and compare water heater installers](https://waterheaters.wiki/installers/): Find and compare local water heater installers with license checks, site-survey questions, written scopes, commissioning and service-support requirements. ## System research and ownership - [Types of Water Heaters](https://waterheaters.wiki/types/): Understand water heater types, fuels and installation needs. Compare tank, tankless, heat pump, gas, electric and point-of-use choices. - [Heat-Pump Water Heaters](https://waterheaters.wiki/types/heat-pump-water-heaters/): Decide whether a heat-pump water heater fits your home. Understand air access, condensate, noise, backup heating, sizing and local incentives. - [Explore water heater brands by the job you need done](https://waterheaters.wiki/brands/): Explore Rheem, A. O. Smith, Bradford White, Rinnai and Navien water heaters. Compare exact models, delivery, installation requirements and support. - [Compare Water Heaters](https://waterheaters.wiki/compare/): Compare tank, tankless, gas, electric and heat-pump water heaters using capacity, site requirements, local energy rates and complete installed quotes. - [Water Heater Sizing](https://waterheaters.wiki/sizing/): Size a domestic water heater using peak-hour demand, first-hour rating, tank gallons and tankless flow at temperature rise. Start with measured inputs. - [Water Heater Efficiency](https://waterheaters.wiki/efficiency/): Understand water heater efficiency, UEF, annual energy use and heat-pump operating conditions. Compare equipment with realistic household assumptions. - [Water Heater Maintenance](https://waterheaters.wiki/maintenance/): Build a model-specific maintenance plan for a tank, tankless, or heat-pump water heater and know which symptoms need service. ## Planning tools - [Water heater cost calculator](https://waterheaters.wiki/tools/water-heater-cost-calculator/): Browser-based itemized budget scenarios from editorial allowances, not surveyed market prices or local quotes; incentives must be independently verified. - [Water heater size calculator](https://waterheaters.wiki/tools/water-heater-size-calculator/): Browser-based peak-hour hot-water demand estimate and a separate tank-volume heuristic; confirm model-specific first-hour rating, recovery, and operating mode. - [Tankless GPM calculator](https://waterheaters.wiki/tools/tankless-gpm-calculator/): Browser-based concurrent flow, temperature rise, and approximate water-side heating load; not a gas-supply or electrical-circuit design. - [Water heater rebate finder](https://waterheaters.wiki/tools/rebate-finder/): Limited dated program records and official lookup resources; no eligibility approval and no inference that a missing record means no incentive exists. ## Publication and evidence - [About WaterHeaters.wiki](https://waterheaters.wiki/about/): Learn the scope of WaterHeaters.wiki and how its independent residential hot-water guides and tools support homeowner decisions. - [Editorial Policy](https://waterheaters.wiki/editorial-policy/): Read how WaterHeaters.wiki handles sources, recommendations, AI-assisted preparation, corrections, and commercial disclosures. - [Methodology and Calculator Assumptions](https://waterheaters.wiki/methodology/): Understand how the site compares systems and how cost, storage sizing, tankless flow, and incentive results are calculated. - [Contact and Corrections](https://waterheaters.wiki/contact/): Editorial contact form and corrections guidance. Messages are forwarded to localcatalystai@gmail.com; equipment service and emergencies require the appropriate local contacts. ## Site information and discovery - [Information about WaterHeaters.wiki](https://waterheaters.wiki/ai-info/): Publication identity, scope, preparation, attribution, limitations, and editorial contact. - [HTML sitemap](https://waterheaters.wiki/sitemap/): A browsable directory of published guides and site information. - [XML sitemap](https://waterheaters.wiki/sitemap.xml): Canonical indexable page URLs. - [robots.txt](https://waterheaters.wiki/robots.txt): Crawler instructions and the XML sitemap location.