Tankless Water Heater Installation in Manhattan Beach
Tired of running out of hot water halfway through a shower, or nervous about that aging 50-gallon tank sitting in your Manhattan Beach garage? A tankless water heater solves both problems – endless hot water on demand, a smaller footprint, and a longer service life than a traditional tank. ML Plumbing installs tankless systems throughout Manhattan Beach and the South Bay, sizing each unit to your home’s real hot-water demand and venting it correctly the first time. We’re a family-run plumbing company, and we treat every install like it’s going in our own house.
What tankless water heater installation involves
A tankless (or “on-demand”) water heater heats water only when a fixture calls for it, using a high-output gas burner or electric element inside a wall-mounted unit about the size of a carry-on suitcase. Because there’s no stored tank to keep warm, you stop paying to reheat 40-50 gallons of water around the clock, and you stop worrying about a tank rupturing on your garage slab.
A proper installation is more than swapping boxes. We evaluate your existing gas line (most standard 1/2″ lines need upsizing to 3/4″ to feed a 180,000-200,000 BTU unit), confirm your electrical supply, plan the venting – typically stainless or PVC through a sidewall – and route condensate drainage for condensing models. We install the unit, add isolation valves for future flushing, pressure-test the gas, commission the burner, and walk you through the controls before we leave. Typical residential installs in Manhattan Beach take most of a day. Retrofits from an old tank in a tight closet can run longer if we need to reroute vent or gas.
Why ML Plumbing for tankless water heater installation
- Experienced South Bay plumbers – not a general handyman running gas lines on the side
- Family-run and local – the person who quotes your job is on-site the day of install
- We size units to your actual fixture count and groundwater temperature, not a generic chart
- Correct gas line upsizing and venting included in the scope – no surprise change orders mid-install
- Responsive scheduling for most Manhattan Beach installs
- We install isolation/flush valves standard, so annual descaling (critical in South Bay’s hard water) is straightforward
Our tankless water heater installation process
- Phone consultation. We ask about your home size, number of bathrooms, simultaneous hot-water demand, current fuel type, and where your existing heater lives.
- On-site assessment. A plumber measures your gas line, checks vent routing options, inspects the electrical panel, and confirms permit requirements with the City of Manhattan Beach.
- Written estimate. Fixed price with the specific make and model, BTU rating, venting plan, and any gas or electrical upgrades listed line by line.
- Permit and scheduling. We pull the plumbing and mechanical permits and book an install date.
- Removal and install. We drain and haul away the old tank, mount the new unit, run vent and condensate, upsize gas as needed, and connect water lines with service valves.
- Commissioning and walkthrough. We pressure-test gas, purge air, verify combustion, set your target temperature, and show you how to use the remote and when to flush the unit.
- Inspection. We meet the city inspector on-site so you don’t have to take another day off work.
What tankless water heater installation typically costs
Every Manhattan Beach home is a little different, so we quote in person rather than throw out a number that won’t hold up. Estimates range based on the unit’s BTU rating and flow rate (a 3-bath home needs more capacity than a 1-bath condo), whether your gas line needs to be upsized from 1/2″ to 3/4″, the venting run and whether we can reuse an existing penetration, condensate drainage for high-efficiency condensing models, and any electrical work at the panel. Permit and inspection fees are included in our written estimate. What’s not included: decorative enclosures, recirculation pumps (a great add-on for larger homes, quoted separately), or repairs to unrelated plumbing we find behind the old tank. Ask about rebates – SoCalGas and some manufacturers offer meaningful incentives on qualifying condensing units. Call for a free on-site quote.
Service areas we cover
- Manhattan Beach
- Hermosa Beach
- Redondo Beach
- El Segundo
- Torrance
- Palos Verdes
- Lomita
- San Pedro
- Gardena
- Carson
FAQ
How long does a tankless water heater installation take in Manhattan Beach?
Most straightforward replacements are a single day. Jobs that need gas line upsizing, new venting through a wall, or relocation from an interior closet to an exterior wall can run into a second day.
Will a tankless unit really give me endless hot water?
Yes – within its flow rating. A properly sized unit will run a shower, dishwasher, and washing machine simultaneously without dropping temperature. Undersized units are the number one complaint we see on installs done by others, which is why we size to your fixture count.
Is tankless worth it compared to a new tank?
For most South Bay homes, yes. You’ll typically see lower gas bills, a 15-20 year service life versus 8-12 for a tank, and no risk of a catastrophic tank leak on a garage or laundry room slab. If you’re staying in the house 5+ years, the math usually works.
Do I need to upgrade my gas line?
Often, yes. Tankless units fire at 180,000-200,000 BTU compared to 40,000 for a standard tank, so a 1/2″ line usually needs to be upsized to 3/4″. We check this during the on-site quote and include it in the price.
How often does a tankless heater need to be flushed?
Once a year in South Bay Los Angeles – our water is hard, and scale is the number one killer of tankless units. We install isolation valves on every job so annual descaling is quick.
Can you install a tankless heater if my old tank was electric?
Sometimes. Gas tankless typically outperforms electric, so if gas is available at the house we usually recommend converting. We’ll lay out both options at the estimate.
Ready for endless hot water and a heater that won’t flood your garage? Call ML Plumbing at (323) 792-2922 for a free on-site tankless water heater installation quote in Manhattan Beach. We’re a family-run local plumbing company ready to help.