Angi's 2026 tankless cost guide puts the national average installed cost at about $2,641, with a typical range of about $1,404 to $3,904, and HomeGuide lists about $1,400 to $5,600 installed. In Lakewood, gas line upsizing, new venting and permits often decide where a project lands in that range.
Published ranges
| Item | Range | Source |
|---|---|---|
| Tankless, installed (typical) | about $1,404–$3,904 (avg about $2,641) | Angi, 2026 |
| Tankless, installed | $1,400–$5,600 | HomeGuide, 2026 |
| Tankless replacement | $1,400–$3,900 | Angi, updated Oct 16, 2026 |
| Tankless repair | $100–$1,300 | Angi, updated Oct 16, 2026 |
Sources: Angi tankless water heater cost, Angi water heater replacement cost, HomeGuide water heater installation cost.
Lakewood cost factors
- Gas line: many 1950s homes need a larger gas line from the meter.
- Venting: tankless units use different vent materials and routes than tanks.
- Electrical: most units need an outlet.
- Location: garage, exterior wall or shed. Garage and outdoor heaters start with planning review.
- Permits through Lakewood Building and Safety.
- Service valves for future descaling.
Not sure what you need? Talk it through by phone.
Call (708) 350-9399Is it worth it?
U.S. Department of Energy Building America research says a gas tankless heater should save roughly 33% on water heating compared with a conventional tank, with actual savings depending on how hot water is used. Payback depends on your use. See tank vs tankless and tankless water heaters.
What don't these ranges tell you?
Ranges below are U.S. national figures published by the sources named, with the update dates those sources show, accessed November 11, 2026. They are not quotes and not our prices. Southern California labor and permit costs often sit at or above the middle of national ranges. Your actual price depends on the provider, the job and conditions found on site. National averages blend low-cost and high-cost markets, small and large jobs, and simple and difficult access. They don't include every permit, code update or restoration cost, and they can't account for what a provider finds once the work starts. A provider can only price your job after learning about it.
How do you compare quotes in Lakewood?
- Ask each provider to itemize labor, parts or equipment, the permit, code updates, haul-away and restoration.
- Make sure each quote covers the same scope, so you're comparing like with like.
- Ask what's warrantied and for how long, in writing.
- Ask whether a visit or diagnostic fee applies, and whether it's credited toward the work.
- Check the contractor's license with the California Contractors State License Board.
- Confirm whether the provider will pull the Lakewood permit and arrange inspections.
How was this guide researched?
This guide was written for Lakewood, California homeowners and checked against the sources below on November 11, 2026. Rules and prices change, so confirm anything important with the agency or provider. See our editorial policy.