01
The water heater is on its way out
Water heaters
Tank replacement and tankless conversion. On a conversion most of the work is the gas sizing and the venting, which is where cheap quotes tend to come up short.
Thousand Oaks · Tankless
Tankless water heaters
in Thousand Oaks
Tankless water heaters in Thousand Oaks, ten minutes from the shop in Westlake Village. A tankless heater fires at four or five times the rate of the tank it replaces. That is where the job is. Get the gas and the venting right and it runs for twenty years.
Call (805) 330-3111
Request a visit
Danny picks up when he can, and calls back the same day. You get the price before we start, and nobody here is on commission. Monday to Friday, 9am – 5pm.
Licensed
CSLB #339618
Insured
Bonded and insured
Since 1977
49 years, two generations
On Google
5.0 stars
In Thousand Oaks
What this job looks like
in Thousand Oaks
Thousand Oaks tankless work is mostly conversions, and the unit is the easy part. A tank draws about 40,000 BTU and a whole-house tankless draws 150,000, so the gas line gets upsized from the meter and the venting is run for the unit. In October 2025 we took a tank out of a garage on the east side and set a condensing tankless in its place, and while there we capped and pressure-tested the fire pit line at 10 psi and connected the owner's fire ring. The permit and inspection go through City of Thousand Oaks Building and Safety. Hard water here means a descale once a year.
Streets and pockets we work in: Lang Ranch, Sunset Hills, North Ranch, the Westlake side of the boulevard, the older tracts off Erbes Road.
If that is what yours is doing (805) 330-3111 Mon–Fri 9–5 Request a visit →
The job
How it goes
A conversion starts at the gas meter. A standard tank draws about 40,000 BTU. A whole-house tankless draws 150,000 to 199,000, and the half-inch gas line that fed the old tank very often cannot carry that. So the line gets upsized from the meter, and sometimes the meter itself has to be upgraded, which the gas company does. Then the venting. A condensing unit vents in PVC and needs a condensate drain; a non-condensing unit needs stainless steel vent. The unit needs a power outlet. Cold water in, hot water out, isolation valves on both so it can be serviced.
Sizing is by how many fixtures run at once and by how cold the water comes in. Groundwater here runs around 55 degrees in winter, which is the number that decides the unit, and undersizing is the mistake we see most on cheap installs. A house that wants two showers and a washer at once needs the bigger unit, and a large house with a far bathroom usually wants a recirculation loop as well.
Hard water is the other thing to plan for. The heat exchanger scales up, and a tankless in this valley wants descaling once a year. The isolation valves we fit are what make that a half-hour job. We do that service on units we installed and on ones we did not.
Call if
What you notice,
and what it usually is
01
The tank is due and you are tired of replacing tanks
A tankless lasts about twice as long. Conversion is the moment to do it.
02
Hot water runs out with a full house
A tankless heats as it goes. Sized right, it does not run out.
03
The heater lives in a closet with no room for a bigger tank
A tankless hangs on the wall the size of a carry-on bag.
04
A long wait for hot water at the far bathroom
A recirculation loop, with or without a tankless. We do both.
05
Your tankless has lost power or runs lukewarm
Scale on the heat exchanger. A descale usually brings it back.
Work in Thousand Oaks
From the invoice book,
names left off
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October 2025
Tank to tankless, and a fire pit line tested
Removed a tank heater and installed a condensing tankless unit in its place. While there, capped and pressure-tested the fire pit gas line at 10 psi for fifteen minutes and connected the owner's fire ring.
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June 2026
A gas smell outside the dining room
On the Westlake side of town. Excavated and found a hole in a half-inch galvanized gas pipe. Replaced the horizontal run, restored the gas and found a second leak where the pipe enters the house, so shut it down again for the next stage.
How it goes
Four steps, and you have the price at step three
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01
You call
Danny picks up when he can, and calls back the same day. Tell him what it is doing and where.
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02
We look
We come out, find the cause and show you. In plain words, with the part in our hand where there is one.
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03
You get a price
Before anything starts. Repairs are our time plus parts, and the bigger jobs get a written bid. Nobody here is on commission.
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04
We do the work
Small repairs are usually done the same visit. Bigger jobs get a start date and a number of days, and we hold to it. Done to code, permitted where it needs it, the house left the way we found it.
Common questions
Tankless in Thousand Oaks: things people ask
- How fast can you get to the east side of Thousand Oaks?
- Often the same day. It is a ten minute drive. Say what it is doing when you call and Danny will give you a time straight away.
- Does the oak tree ordinance affect a sewer repair?
- It can. The city protects oaks and the root zone around them, so a trench cannot always take the shortest route. We locate the line from the surface first and plan the dig around the trees before anything is priced.
- Is it really endless hot water?
- Yes, up to the unit's flow rate. Two showers at once on a properly sized unit is fine. Four at once is not, on any unit. We size it for how your house is used.
- Will it cut my gas bill?
- Some. A tank keeps forty gallons hot all day whether you use it or not; a tankless heats only what you draw. The saving is real and it is not what pays for the install. Space, lifespan and never running out are the reasons people do it.
- Can my existing gas line handle it?
- Usually not without changes. That is most of the difference between a cheap quote and a correct one. We size the line from the meter to the unit and tell you what has to change before you commit.
A question that is not here (805) 330-3111 Mon–Fri 9–5 Request a visit →
Google reviews
What people say
5.0 ★★★★★ 5 reviews on Google
★★★★★
“Dan is consistent. Professional, on time, only does what is needed, experienced, easy to work with, clean, and smart.”
★★★★★
“Dan's Plumbing did excellent job for us replacing our broken water pressure regulator. Quick response, good price, great quality of work. Will hire them again.”
2 of the 5, word for word. Read the rest on Google → Had us out? Leave a review →
Nearby, and related
More in Thousand Oaks,
and this job elsewhere
- Plumber in Thousand Oaks The whole town: what the houses are plumbed with, what people call about, the neighborhoods.
- Leak detection in Thousand Oaks On the east side of Thousand Oaks the leaks split by neighborhood.
- Water heaters in Thousand Oaks Water heaters on the east side of Thousand Oaks tend to fail in batches: the Lang Ranch houses from the late nineties are all reaching their second replacement at once. We replace tanks with the strapping, the expansion tank and the City of Thousand Oaks permit, and we do tankless conversions where the gas line can be sized for it. In October 2025 we took a tank out of a Thousand Oaks garage and put a condensing tankless unit in its place.
- Drain cleaning in Thousand Oaks Thousand Oaks protects its oaks by ordinance, and that matters the moment a drain problem turns out to be a sewer problem: the shortest trench often runs through a root zone you cannot dig in. So we clear the line first, and if it has backed up before we put the camera down and locate the trouble from the surface before anyone prices a repair. In November 2025 one main here was blocked with flushable wipes and another with roots.
- Sewer camera & repair in Thousand Oaks A camera inspection in Thousand Oaks answers a question the oak ordinance makes expensive to guess at: where exactly the line has failed, and whether a repair can stay out of a protected root zone. We run the camera from the cleanout to the street, you watch it with us, and the transmitter on the camera head lets us mark the fault and its depth on the surface so the hole goes in the right place the first time.
- Repiping in Thousand Oaks Repipes on the east side of Thousand Oaks are the older tracts, sixties and seventies copper that has pinholed more than once.
- Gas lines in Thousand Oaks Gas work on the east side of Thousand Oaks lately has been outdoor kitchens, fire pits and upsizing for tankless heaters.
- Repairs in Thousand Oaks On the east side of Thousand Oaks most of what we do is small.
- Pressure regulators in Thousand Oaks Thousand Oaks sits high enough on its east side that street pressure arrives above the 80 psi the code allows in a house, and it is worse on the hillside streets above Lang Ranch. A regulator that failed years ago shows up as a run of small failures: fill valves, angle stops, faucet cartridges, a dripping relief valve. A gauge on the hose bib settles it in a minute. In December 2025 a shower valve here needed a new cartridge and the regulator at the front of the house had failed as well, so both were replaced. An expansion tank goes on at the heater with it.
- Slab leaks in Thousand Oaks Slab leaks in Thousand Oaks come from the older tracts on the east side, off Erbes Road and along Westlake Boulevard, built in the sixties and seventies on slab with the copper in the concrete. The Lang Ranch houses are thirty years younger and rarely have one. A warm patch on the floor, or a bill that jumped, is how it starts. We isolate the line at the meter, then bring in the leak-locating specialist we work with to listen through the slab and mark the spot. Then it is a spot repair through one opening or a reroute overhead, and we say which we would do in your house.
Tankless nearby: Westlake Village · Agoura Hills · Oak Park · Lake Sherwood
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Tankless · Thousand Oaks
Tell Danny what
it’s doing
Describe the symptom and you will usually have an answer in two minutes. You get the price before any work starts. Ten minutes from the shop. Monday to Friday, 9am – 5pm.