Water Heater Selection: Match the Equipment to Household Needs

Describe hot-water demand

Tell bidders how many people live in the home, when hot-water use peaks, and whether simultaneous showers, laundry, or other uses create shortages. A storage tank, tankless unit, and heat-pump water heater behave differently, so discuss actual usage rather than choosing by a label alone.

Ask for the proposed capacity or output basis and how the contractor accounts for incoming water temperature, fuel, and recovery. Discuss noise, air temperature, condensate, and required surrounding space for heat-pump models.

Check the installation constraints

The equipment choice can require changes to venting, fuel piping, electrical capacity, condensate drainage, water piping, seismic restraint, or combustion air. Have the bidder state which changes are included and whether the existing location is suitable.

Ask about removal and disposal of the old unit, leak protection, expansion control where applicable, temperature setting, shutoff access, permits, inspection, and commissioning. Safety devices and code requirements should be addressed according to the home and local rules.

• Ask the contractor to identify make, model, capacity, and applicable efficiency documentation.
• Request an explanation of the warranty and maintenance requirements.

Compare the full proposal

ENERGY STAR publishes product information for efficient equipment categories; verify the exact model and compare its requirements with the proposed installation. A product label does not show whether venting, electrical changes, or removal are part of the quote.

Current local prices are unavailable here. Ask contractors to bid on the same heater type and installation assumptions, with allowances and exclusions identified. Compare the complete scope, not just the equipment line.