Water Heaters

Choose between tank (storage) and tankless (on-demand) models based on hot water demand, space, and recovery speed: tank models store hot water and are good for consistent simultaneous use, while tankless units heat water as needed and save space; also consider fuel type (electric, gas, propane) and installation constraints

For tank water heaters, pick a storage capacity that matches household peak usage (common sizes range from 20 to 80+ gallons); for tankless, look at maximum flow rate in gallons per minute (GPM) and temperature rise—match the GPM to combined fixture demand (e.g., shower ~1.5–2.5 GPM)

Prices vary by type and capacity: small electric units and basic tank models are lower cost, while high-capacity tanks, tankless units, and specialty or high-efficiency models cost more; expect a wide range from entry-level options to several times higher for advanced or commercial-grade units, with fuel type and installation complexity affecting total cost

Compare Energy Factor (EF) or Uniform Energy Factor (UEF) ratings, standby heat loss for tank models, and the thermal efficiency for gas units; higher UEF/EF and lower standby losses mean lower operating costs over time, and insulation and modulating burners/pumps also improve efficiency

Confirm compatible fuel supply and venting for gas/propane units, electrical requirements for electric and tankless models (may need dedicated breakers), proper pressure relief valve installation, and adherence to local plumbing and building codes; professional installation is recommended when fuel lines, venting, or electrical upgrades are involved

Typical lifespans are roughly 8–12 years for tank units and 15–20+ years for many tankless units; regular maintenance includes flushing tanks to remove sediment, inspecting anode rods on storage tanks, checking pressure-relief valves, and following manufacturer service intervals to extend life and maintain efficiency

Compare warranty length and coverage for tank, heat exchanger, and parts, check whether service requires authorized technicians, and review what labor or shipping costs are excluded; longer and more comprehensive warranties can reduce long-term repair expenses