Around Burbank, Glendale and Los Angeles, swapping a gas tank for a gas tankless water heater usually costs about $4,500 to $5,500 installed, according to published LA contractor pricing. A like-for-like 40- or 50-gallon gas tank runs about $1,650 to $2,800. So tankless starts roughly $1,700 to $3,700 behind. Here's where that money goes, what a SoCalGas rebate takes back, and when the math actually works.
Tank vs tankless: published 2026 prices
These are published ranges from LA-area installers and cost guides. They are a sanity check, not a quote.
| Job | Published range | Source |
|---|---|---|
| 40-gallon gas tank, like-for-like swap | $1,650–$2,400 | Venta (LA installer) |
| 50-gallon gas tank, like-for-like swap | $1,850–$2,800 | Venta (LA installer) |
| Gas tank, 40–50 gal (broad LA range) | $1,100–$2,500 | Plumbing Connection LA |
| Gas tank to condensing tankless, typical | $4,500–$5,500 (clean swaps from about $3,500; older homes $6,500–$8,500) | PowerRoute (LA) |
| Tankless gas conversion, all-in | $4,400–$6,800 | WaterHeaters.com (LA) |
| Tankless, installed | $4,500–$7,800 | Venta (LA installer) |
| Tankless, all-inclusive (Burbank and Glendale pages) | most $3,300–$8,000 | The Water Heater Company |
| Tank vs tankless, cost-guide ranges | tank $775–$3,275; tankless $1,850–$5,100 | Angi (Los Angeles) |
Cost guides come in lower than local installers because they blend in cheaper markets and simpler jobs. One LA contractor puts it bluntly: no licensed LA shop installs a permitted whole-home tankless system for the low national number. Use the installer ranges for a Burbank or Glendale house.
Where the tankless money goes
The unit is less than half the bill. Here is how one LA contractor breaks down a gas tank to condensing tankless conversion (PowerRoute, 2026):
| Line item | Typical LA cost |
|---|---|
| Condensing tankless unit (about 199,900 BTU) | $1,400–$2,100 |
| Labor (about 6–10 hours) | $800–$2,500 |
| Gas line upsizing | $500–$2,000 |
| Venting | $300–$1,200 |
| 120V outlet or circuit | $250–$900 |
| Isolation (service) valve kit | $120–$250 |
| Condensate drain and neutralizer | $75–$200 |
| Scale filter | $150–$300 |
| Old tank removal | $100–$300 |
| Permit (LADBS example) | $60–$120 |
A tank swap skips most of those lines. It reuses the gas pipe, the flue and the floor spot.
The gas line is the big swing
A whole-house tankless burns a lot of gas at once. PowerRoute notes that a 199,900 BTU unit needs a 1-inch pipe at a 20-foot run, while many older LA homes have ½- or ¾-inch pipe. Venta says a condensing tankless typically needs a ¾- or 1-inch line, and the re-pipe from the meter runs $485–$2,400 depending on length and access. Older Burbank, Glendale and Valley houses often fall into that group, so get the gas line sized and priced before you sign. Our gas piping page covers that work.
The tank vs tankless math
Here is a rough comparison using only the published numbers above, in today's dollars:
- Upfront: 50-gallon gas tank about $1,850–$2,800, versus a typical tankless conversion at $4,500–$5,500. That's about $1,700–$3,650 more for tankless.
- Rebate: SoCalGas pays up to $1,500 on the most efficient tankless units (details below). At the top tier, that trims the gap to roughly $200–$2,150. (SoCalGas also lists $300–$575 rebates on some efficient storage tanks, which would narrow the tank side a bit.)
- Lifespan: an LA installer puts gas tanks at about 8–12 years in Southern California hard water, and tankless at about 15–20 years with yearly descaling (A+ Electric & Plumbing). Over 20 years you may buy two tanks, about $3,700–$5,600 at today's prices, against one tankless.
- Upkeep: tankless needs yearly descaling and a scale filter. A tank needs regular flushing too, but it is simpler.
So over a long stay, a clean tankless conversion with a top-tier rebate can come out close to two tanks. A conversion that needs a new gas line and vent usually does not, on cost alone. Venta's take is that a 1–2 person household with low hot water use never pays back the extra. In our mild climate, the reasons to go tankless are mostly endless hot water, garage space and a longer life, not a fast payback.
SoCalGas rebates and tax credits in 2026
SoCalGas's 2026 rebate pays for ENERGY STAR gas tankless units by efficiency rating (UEF): $80 at .82–.86, $900 at .87–.94, $1,100 at .95, $1,300 at .96–.97, and $1,500 at .98 or above. The tankless unit must replace a gas tank-type heater in a single-family detached home. Purchase and installation must happen in 2026, and applications are first-come, first-served until funds run out, with a December 31, 2026 postmark deadline (SoCalGas 2026 application; rebate page). Check the model's UEF before you buy, because the jump from $80 to $900 is a big one.
The federal 25C tax credit covered qualifying water heaters only through December 31, 2025, according to the IRS. A 2026 quote or web page that still subtracts a federal credit is out of date.
Hard water: plan for descaling
LADWP reports about 8.6 grains per gallon in the San Fernando Valley, and up to 16.3 in parts of LA, per PowerRoute. Anything above 7 is considered hard. Scale is the main thing that shortens a tankless unit's life, so budget for a scale filter and a yearly flush. See how to flush a water heater for the basics.
When a tank still makes more sense
- You may sell within a few years.
- Your gas line is ½-inch and the meter run is long.
- You live in a condo or duplex. The SoCalGas tankless rebate is for single-family detached homes.
- Your old tank is leaking now and you need hot water today. If your tank is just showing its age, see signs your water heater is dying.
Permits in Burbank and Glendale
A tank-to-tankless conversion changes the gas piping and venting, so plan on a permit and inspection. Burbank and Glendale run their own building departments, separate from LADBS in the City of Los Angeles, so fees and inspection scheduling differ. Ask who pulls the permit and whether it's in the price.
How to compare tankless quotes
- Get the brand, model and UEF in writing so you know the rebate tier.
- Ask whether the gas line size was checked from the meter, and what upsizing costs.
- Confirm venting, condensate drain, isolation valves, scale filter, permit and haul-away are included.
- Check the C-36 license on the CSLB website.
For the full tank picture, see our water heater replacement cost guide.
Weighing tank vs tankless in Burbank, Glendale or the Valley? Rooter Pros is a licensed, Burbank-based mobile plumber (CSLB #917630), open 24/7. Call and we'll look at your gas line, venting and space and give you a quote for either option.
Call (818) 669-9019Prices are typical published ranges for the Los Angeles area as of October 2026 and change over time. Your price depends on your home. Sources are linked in each table.