Top 10 Water Heater Installation in Seattle, WA
The best water heater installation companies in Seattle, WA for 2026 include 2 Sons Plumbing, Sewer, Septic, Electric, Heating & Air (4.9), Bee's Plumbing and Heating (4.8), Gene Johnson Plumbing (4.8). All install tank and tankless water heaters with same-day service available.
2 Sons Plumbing, Sewer, Septic, Electric, Heating & Air
Water Heater Doctor
Gene Johnson Plumbing
Greenwood Heating and Home Services
Bee's Plumbing and Heating
Craftsman Plumbing
South West Plumbing, Heating, Air, & Electric
Eco Electric, Plumbing, Heating and Air
Garrett & Sons Water Heaters
Washington Water Heaters, Heating & Air Conditioning
How We Ranked These Seattle Pros
Our rankings are based on a weighted evaluation of five key factors:
- Licensing & Insurance — All listed businesses hold active state licenses verified through official databases.
- Customer Reviews — We aggregate ratings from Google, Yelp, and the BBB, weighting recency and review volume.
- Response Time — Companies offering same-day or 24/7 emergency service score higher.
- Pricing Transparency — Businesses who offer flat-rate pricing or free estimates rank above those with opaque billing.
- Experience & Longevity — Years serving the Seattle market and breadth of services factor into overall reliability.
Rankings are reviewed quarterly. Have a correction? Contact us.
Frequently Asked Questions
How much does water heater installation cost in Seattle?
Water heater installation in Seattle costs $900-$1,500 for a standard tank model and $2,500-$5,000 for tankless. Includes unit, labor, permits, and old unit disposal.
How long does water heater installation take?
A standard tank replacement takes 2-4 hours. Tankless installation takes 4-8 hours due to venting and gas or electrical upgrades. Most Seattle companies offer same-day installation.
Do I need a permit for water heater installation?
Yes, most cities require a plumbing permit for water heater installation. Your installer should handle this. Unpermitted work can affect insurance claims and home resale.