Tankless Water Heater Installation in Orange County, CA
This service is for homes that already have a tankless water heater and need a new one, or for new construction and remodels where a tankless unit is going in from the start. The connections are already planned for tankless, so the focus is choosing the right unit and installing it to the manufacturer's requirements.
Converting from a storage tank is a different job with more steps. If that is your situation, see our tank-to-tankless conversion page.
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Signs you need tankless water heater installation
- Your current tankless unit has a failed heat exchanger or repeated errors that are not worth repairing.
- The existing unit cannot keep up with simultaneous showers or a new bathroom.
- You are remodeling and want a properly sized tankless unit planned in from the start.
- Your older non-condensing unit is due for replacement and you want to compare a condensing model.
- The unit is past its warranty and parts are getting hard to find.
What the job includes
- Arrival and load check: we count fixtures and confirm the flow rate and temperature rise the home needs.
- Unit selection: we compare condensing and non-condensing models that fit the existing gas supply and vent path.
- Permit: a permit is usually required. We handle it where your city requires one.
- Removal: the old tankless unit is shut down, disconnected and taken off the wall.
- Mounting and connections: the new unit is mounted, with isolation valves for future flushing, gas and water connections, and a pressure relief valve.
- Venting and condensate: the vent is installed to the manufacturer's spec, with a condensate drain on condensing units.
- Startup: we purge the lines, set the temperature, check gas pressure under full fire and test multiple fixtures.
- Haul-away: the old unit and packaging leave with us.
Options we install or service
Tankless focus: this page is about installing a tankless unit where tankless plumbing already exists or is being planned. If a storage tank is a better fit for your budget or space, we can install that instead.
Gas vs electric: gas tankless units are the most common choice in Orange County. Whole-home electric tankless units need a large electrical service, so we check your panel before recommending one.
Condensing vs non-condensing: condensing units capture more heat from the exhaust and can use plastic venting. Non-condensing units need stainless or other approved metal venting.
Brands we work with for this service
How long it takes
Swapping one tankless unit for another with matching connections often takes part of a day.
Changing from non-condensing to condensing, or moving the unit, adds venting and plumbing time.
Call for a free quote
The right unit depends on how many fixtures run at once and what is already in place. Call us for a free quote.
(714) 244-8562Tankless Water Heater Installation FAQ
Do I need to change the venting when I replace a tankless unit?
Sometimes. A condensing unit can use different venting than an older non-condensing model, and vent lengths must match the new unit's manual. We check this before quoting.
What size tankless water heater do I need?
Sizing depends on how many fixtures run at the same time and how much the water needs to be heated. We work it out from your bathrooms and household habits.
Will a new tankless unit need isolation valves?
We install service valves so the unit can be flushed and descaled without cutting into the plumbing later.
Can you install a tankless water heater outdoors?
Many models are rated for outdoor mounting, which frees up indoor space. We confirm the model and location meet the manufacturer's requirements.