How much is a tankless water heater installed in Los Angeles?
Expect $3,200–$6,500 installed. A straight tankless replacement is at the low end; a full tank-to-tankless conversion with gas and venting work is at the high end.
Tankless
Tankless Water Heater Installation in Los Angeles
A tankless water heater installed in Los Angeles typically costs $3,200 to $6,500 and takes 6 to 10 hours in one day. The spread comes from gas line sizing, venting and whether you're converting from a tank. Most homes need a 3/4" gas line and new stainless venting, and both are quoted upfront — no change orders once we start.
What it costs in LA
$3,200 – $6,500
- · Straight tankless-for-tankless swap: $2,800 – $3,800
- · Tank-to-tankless conversion: $4,200 – $6,500
- · Gas line upsizing, if needed: $600 – $1,500 of that total
- · Recirculation pump add-on: $450 – $900
How long it takes
6 – 10 hours (same day)
- · Remove and haul away the old tank
- · Run or upsize the gas line and install condensate drain
- · Mount unit, run stainless venting, connect water and gas
- · Fire the unit, set temperature and walk you through the controls
What's included
- Removal and disposal of the old water heater
- New tankless unit with manufacturer warranty registered in your name
- Gas line sizing and upgrade if required
- Stainless steel venting and condensate drain
- Isolation valves for future descaling
- Seismic strapping and code-compliant install
- Permit and inspection coordination
- Startup, temperature setting and homeowner walkthrough
Tankless Water Heaters pricing at a glance
| Service | Typical price | Time on site |
|---|---|---|
| Tankless replacement (existing tankless) | $2,800 – $3,800 | 6 hours |
| Tank-to-tankless conversion | $4,200 – $6,500 | 8–10 hours |
| Standard 50-gal tank replacement | $1,800 – $2,900 | 3–4 hours |
| Tankless descaling / maintenance | $189 – $289 | 1–2 hours |
| Recirculation pump add-on | $450 – $900 | +2 hours |
Ranges reflect typical Los Angeles-area jobs. Your exact price is quoted flat and in writing before any work begins.
Common questions
How long does tankless installation take?
One day — usually 6 to 10 hours. You have hot water again the same evening.
Is tankless worth it in Southern California?
For most homes, yes: endless hot water, roughly 20–30% lower gas use, and a 20-year unit life versus 10–12 for a tank. It pays off best in homes that run out of hot water today.
How often does a tankless unit need service?
Descale once a year in LA's hard water. It's a 1–2 hour visit and it's what keeps the warranty and the efficiency intact.
Ready when you are
Let's get your plumbing light years ahead
Call for same-day help or book a visit online. Upfront pricing before any work starts — always.