Tankless Water Heater Installation Fountain Valley
Ready to swap out that clunky old tank for something sleeker and smarter? We handle tankless water heater installation Fountain Valley homeowners trust when they want hot water that doesn’t run out. These heaters only fire up when you use water—so they save energy and make sure you never run cold in the middle of a shower.
We install gas and electric tankless water heaters in homes, condos, and even garage conversions. Our techs are trained and certified to install major brands like Navien, Rinnai, Noritz, and Rheem. We use high-tech gas detectors, leak-free crimping tools, and laser levels to mount everything straight and solid.
If your old unit isn’t keeping up or you’re remodeling, give us a call. We’ll help you size the system right, check the flow rate, and make sure the gas and electric lines are good to go. You’ll get a clean install, solid connections, and city code sign-off.
Give us a Call us (714) 964-3519 or book online. We’re local, licensed, and clean—and you’ll get it done right the first time.
Story from Fountain Valley – Near Mile Square Park & Brookhurst
Last fall, we worked with a homeowner near Mile Square Park, right off Brookhurst. They were remodeling their garage into a guest unit and needed a space-saving water heater. Their old tank took up half the laundry room.
We helped them pick a compact Noritz unit, ran a new gas line, and installed venting through the side wall. They were surprised it was done in under a day—and happy their guests wouldn’t have to wait for the tank to reheat between showers.
Why Homeowners in Fountain Valley Choose Tankless
Tankless water heaters heat water only when you need it—no standby loss, no clunky tank taking up room. Most of the units we install last 15–20 years with basic maintenance. They mount to the wall, save garage space, and cut energy bills over time.
Plus, they’re ideal for big families or multi-bath homes where traditional tanks fall short. Some homeowners even install multiple units in larger homes to balance hot water across bathrooms.
Before we start the install, there’s a few things we take a close look at first:
- The size of your gas line and whether it can support the BTU demand.
- Your home’s electrical panel capacity if you’re going electric.
- Water pressure and whether you’ll need a pressure regulator.
- Existing venting options or clearance for new venting.
- Location access—attic, garage, or utility closet.
All this helps us make sure your new system runs smooth, safe, and up to code.
What Happens if Your Gas Line Isn’t Up to Size
If the gas line in your home is too small for a tankless water heater, it’s not gonna run right—plain and simple. These heaters need a steady, strong supply of gas to fire properly. When the line’s undersized, you’ll hear the unit trying to ignite, maybe click a few times, then give up.
We’ve seen units short-cycle, throw error codes, or just shut down mid-shower. Worse, an improperly sized gas line can cause carbon monoxide buildup if the unit doesn’t burn clean. That’s dangerous for your home and health.
That’s why we check it first. If it needs upsizing, we’ll run a new line—usually from the meter—and use high-quality materials. You get a safe install and consistent hot water without surprises.
Need a Local Plumber? Contact Us Now!
Professional Plumbing provides free plumbing inspections for current homeowners during business hours. A small fee applies for homes in escrow or for sale, which can be credited toward repair costs if we're hired.
Getting Ready for a Tankless Water Heater Install
If you want to help speed up the process or maybe lower a bit of labor, here’s what usually helps:
Clear the area where the old unit is—especially if it’s surrounded by boxes or storage.
Have the new unit ready in the box if you’ve already bought it—or we’ll bring one.
Let us know early if there’s tight attic space, solar preheat, or special venting needs.
And if you’re not sure, no worries—we’ll figure it out during the walk-through.
DIY Tankless Install Mistakes in Fountain Valley
Installing a tankless system isn’t something we recommend doing alone unless you’re licensed. We’ve seen a few cases where folks thought they could save money and ended up flooding the garage—or melting wires.
One homeowner tried to use the old tank venting, which wasn’t up to spec. Another used undersized gas piping, so the unit would short-cycle and fail.
Worst one? A guy mounted the heater on drywall, not studs. Fell off the wall and cracked the gas elbow—real lucky nothing lit up.
If you started but aren’t sure about wiring, venting, or gas—call us. We’ll take it from here.
Related Services
- Tankless Water Heater Maintenance Fountain Valley
- Tankless Water Heater Flushing Fountain Valley
- Water Pressure Regulator Replacement Fountain Valley
- Gas Line Repair Fountain Valley
FAQs – Tankless Water Heater Installation Fountain Valley
Usually 4–8 hours depending on access and venting needs. Same-day completion is common.
Yes. We handle the permit process and make sure everything’s up to city code.
Yes, but we’ll check your gas and water line sizing to make sure it supports the new unit.
Depends on flow rate and number of bathrooms. We help size it so you get hot water when you need it.
Yes. Rebates change often, but we’ll let you know what’s available and help you apply.
