Top 10 Water Heater Installation in Los Angeles, CA
The best water heater installation companies in Los Angeles, CA for 2026 include John's Plumbing & Drain Services (4.9), A-1 Total Service Plumbing (4.9), Red Lilly Plumbing (4.8). All install tank and tankless water heaters with same-day service available.
JW Plumbing, Heating and Air
Payless Water Heaters & Plumbing
Fast Water Heater Company
Monkey Wrench Plumbing, Heating, Air & Electric
A-1 Total Service Plumbing
Water Heaters Only, Inc.
THE Water Heater Company
Speedy Water Heaters
On Call Water Heaters
THE Water Heater Company
How We Ranked These Los Angeles 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 Los Angeles 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 Los Angeles?
Water heater installation in Los Angeles 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 Los Angeles 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.