2026 Installation Prices, in Writing Before Work Starts
Most tankless water heater installations we do in San Diego cost $4,250 to $6,650. Where your home lands depends on the unit size, your gas line, the venting and where the unit goes. We assess your home first. Then you get a written price to approve before any work starts.
Every home is different. Book a visit and we’ll check your gas line, venting and hot water needs, then give you one written price.
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2026 Installed Price
$4,250–$6,650
Tankless water heater installation in San Diego. You approve a written price before any work starts.
Coupon
$150 OFF
Tankless water heater installation
Call (858) 366-8735 to ClaimAsk for this coupon when you book. Can’t be combined with other coupons.
Coupons can’t be combined. Military and senior customers get 5% off. Wisetack financing covers up to $25,000, and prequalifying doesn’t affect your credit. See all current specials or our full range of water heater services.
Four things decide where your home lands in the $4,250–$6,650 range.
We size the unit by how much hot water your home uses at once: the number of bathrooms, the people in the house and the appliances running together.
A tankless unit burns more gas than a tank while it runs. Some homes need a larger gas line to supply one.
Tankless units vent differently than tanks, so switching usually means new venting.
Garage, closet and outdoor installs each take different work.
Already decided on tankless? See our tankless water heater installation page. Comparing with a tank? See water heater installation and replacement prices.
1. Assess Your Home. We check your gas line, venting, electrical and where the unit will go.
2. Size the Unit. We match the unit to your home’s hot water use so it keeps up when showers and appliances run at the same time.
3. Approve a Written Price. You get one written price before any work starts. No surprise work.
4. Install, Test and Walk Through. We install to code, test for temperature and safety, and show you how the unit works. We register it with the manufacturer for you.
A tank-to-tankless switch may need these updates to meet code. We check each one during the assessment, so the price you approve covers your home as it actually is.
| Tank | Tankless | |
|---|---|---|
| Installed price (2026) | $2,063–$4,895 | $4,250–$6,650 |
| How it heats | Keeps a full tank hot all day | Heats water only when you use it |
| Hot water supply | Runs out when the tank empties | Continuous, sized to your home |
| Manufacturer warranty | Bradford White: 6 years, optional 4 more | Navien: 15-year heat exchanger, 5-year parts |
A tank is the lower upfront cost. Tankless costs more to install, but it gives you continuous hot water and a much longer heat exchanger warranty. We’ll price both so you can compare.
Family owned & operated serving San Diego since 2010
Navien-Certified Technicians.
Our technicians are certified to install and service Navien tankless units.
Written Price First.
You approve one written price before any work starts.
Warranty Handled for You.
Our labor carries a 1-year warranty. We register your unit and handle warranty claims for you. See our full guarantee.
Same-Day Installation. Call or book before 10 AM, Monday through Saturday, for same-day installation.
Awards and recognitions
FAQs About
Most installations cost $4,250–$6,650, depending on unit size, gas line capacity, venting and location. You approve a written price before work starts.
Yes, up front. Tank replacements cost $2,063–$4,895. Tankless units heat water only when you use it, and Navien tankless units carry a 15-year heat exchanger warranty.
Yes. Get $150 off a tankless water heater installation. Coupons can’t be combined with other offers.
Yes. Wisetack financing covers up to $25,000, and prequalifying doesn’t affect your credit.
One Written Price, Before Any Work Starts
Ready for Your Tankless Price?
Book a visit and we’ll assess your gas line, venting and hot water needs, then give you a written price. Still comparing? See tank and tankless installation prices.
Give us a call today at (858) 366-8735 or Book Online.
