Tank, tankless, and heat pump water heater intelligence — 294 products from 58 brands with error codes, maintenance schedules, and efficiency comparisons.
Every water heaters product includes access to structured knowledge. Here's a preview of what's available.
Thermocouple is not detecting the pilot flame. Clean the thermocouple tip with fine sandpaper. If it still fails, replace the thermocouple ($10-20 part, 30-minute job). Check for drafts near the combustion chamber.
Unit attempted ignition 3 times without success. Check gas supply valve is fully open, verify gas line pressure meets spec (minimum 3.5" WC for natural gas). Clean the flame rod with emery cloth. Check for exhaust vent blockage.
No flame detected after ignition attempt. Common causes: gas supply interruption, clogged inlet filter screen, or frozen condensate drain line in winter. Check all three before calling for service.
Attach a garden hose to the drain valve and flush until water runs clear. Sediment buildup reduces efficiency by 15-25% and causes popping/rumbling noises. In hard water areas, flush every 6 months.
The sacrificial anode rod protects the tank from corrosion. Remove and inspect — replace when more than 50% corroded or less than 0.5" diameter. A failed anode rod leads to tank failure within 1-2 years.
Lift the lever on the T&P valve to verify water flows freely, then release to confirm it seals. A stuck T&P valve is a safety hazard — the tank can over-pressurize. Replace valve if it leaks or fails to close.
Tank: lowest upfront cost ($400-1200), 40-80 gallon, recovers 30-40 GPH. Tankless: endless hot water, compact, $800-1500 installed, requires dedicated gas line or 150A electrical panel. Heat pump: most efficient (UEF 3.0+, $200-300/year savings), requires 700+ cu ft of ambient space, slower recovery in cold climates. First Hour Rating (FHR) is the key metric for tank models.
Tank heaters average 10 years. Hard water and skipped anode rod replacement are the top lifespan killers. Tankless units last 15-20 years with annual descaling. Heat pump water heaters average 10-15 years. Signs of imminent failure: rusty water, pooling at base, inconsistent hot water.
Every water heater is matched across retailers using UPC barcodes and model numbers. One product, all offers and prices in one record.
Retailer-specific noise stripped. Model suffixes, promo text, and inconsistent formatting normalized into a clean, consistent name.
Specs pulled from every retailer source and merged. One store has dimensions, another has energy ratings — you get the complete picture.
51 product groups — the same model in different finishes, sizes, or configurations linked together with shared base attributes.
58 brands with products in this category. 7 brands have customized knowledge data (brand-specific error codes, failure modes, and maintenance tips).
Track water heater age against expected lifespan across properties. Auto-schedule annual flushing, anode rod checks, and T&P valve tests with reminders for property managers.
Compare annual operating costs between tank, tankless, and heat pump models using UEF ratings, local utility rates, and household hot water demand to find the most cost-effective option.
When a water heater fails, match the existing setup (gas/electric, tank size, venting type, space dimensions) to compatible replacement models available at nearby retailers.
Access 294 products, 8 knowledge types, and 58 brands via a single API.