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Главная: High-efficiency units produce acidic condensate that requires a dedicated drain line and neutralizer.
: A high-capacity electric unit known for its "Advanced Flow Control" to maintain steady temps.
: A flow sensor detects when a hot water tap is opened (typically >0.75 GPM).
This is the difference between your and your target temperature (usually 120°F). In cold climates, a unit may need to heat water, requiring much more power than in warmer regions. III. Gas vs. Electric: The Comparative Choice Gas Tankless Electric Tankless Flow Rate Higher (Best for large homes) Lower (Best for small/single use) Install Cost Higher ($2,400–$5,400) Lower ($800–$1,500) Maintenance Annual descaling required Minimal (Filter cleaning) Infrastructure Requires venting and gas line Often requires panel upgrades Lifespan 10–20 years IV. Top-Rated Models (2026)
Unlike tanks, these units are sized by their ability to handle "peak demand"—the total hot water needed at one time. 1. Calculating Flow Rate (GPM)
Tankless or Demand-Type Water Heaters - Department of Energy
: Preferred by professionals for high efficiency and easier venting options. V. Key Installation Hurdles
