Tankless Water Heater Installation · Endless Hot Water

Tankless Water Heater Installation in San Francisco

Endless hot water, lower gas bills and a unit the size of a suitcase on the wall instead of a tank in the closet. We size, install and permit tankless water heaters across San Francisco and the Peninsula — including the gas-line and venting work that most tank-to-tankless conversions need.

Licensed & Insured

Fully licensed, bonded and insured. Every plumber is background-checked and drug-tested.

24/7 Emergency Service

Burst pipe at 2am? We answer the phone and we show up — typically within 45 minutes.

40+ Years Experience

Family-owned and serving the Bay Area since 1985. We've seen it all and fixed it all.

Upfront Pricing

Free estimates, no hidden fees, no upcharges. And we'll beat any written bid*.

Tankless makes sense when

You regularly run out of hot water
You want to reclaim the space a tank takes up
Your current tank heater is due for replacement anyway
You're remodeling and re-running gas or venting is convenient
You want to cut standby energy loss
You plan to stay in the home long enough to see the payback

Conversion done right

The unit is half the job. The gas line and venting are the other half.

A tankless heater draws far more gas when it fires than a tank does, so many San Francisco homes need the gas line upsized. It also needs dedicated stainless or PVC venting and, ideally, a condensate drain. Skipping any of these is how tankless units earn a bad reputation.

We survey all of it before we quote, so the price you see is the price you pay — and the unit performs the way the brochure promised.

How it works

Tankless Installation, step by step

No surprises: you know what’s wrong, what it costs and what we’re doing before we start.

Survey & size

We measure your peak hot-water demand, check gas supply and venting options, and recommend the right unit.

Flat quote

One price covering the heater, gas and vent work, condensate, permit and removal of the old tank.

Install

Typically one day, including gas-line upsizing where needed and new venting to code.

Commission & walkthrough

We set temperatures, register the warranty, coordinate inspection and show you how to maintain it.

Your options

Tankless options we install

We recommend the least invasive fix that will actually last — and we explain why.

Gas Condensing Units

High-efficiency Rinnai, Navien and Noritz condensing models — the best choice for most whole-house conversions.

Electric Tankless

For point-of-use or homes without gas, where the electrical service can support it.

Recirculation Systems

Add a recirculation pump for instant hot water at distant fixtures — a common upgrade in larger homes.

Multi-Unit & Commercial

Cascaded tankless systems for apartment buildings and commercial kitchens with high, variable demand.

Need Tankless Installation today? We're 45 minutes away.

24/7 emergency service across San Francisco and the north Peninsula. Free camera-verified quotes, upfront pricing, and we’ll beat any written bid*.

Why Economy Plumbing

Why homeowners call us for tankless installation

Sized to your home

We size on measured demand and Bay Area groundwater temperatures, not a chart in a catalog.

Gas, venting and permit included

No surprise change orders for the gas line or the vent run — it's in the quote.

Manufacturer warranties

We register your unit and are authorized to service what we install.

FAQ

Tankless Installation questions, answered

How much does a tankless water heater cost installed?

More than a tank replacement, mainly because of the gas-line and venting work. We quote the complete job flat-rate after a short survey, and we’ll beat any written bid*.

Do I need to upgrade my gas line for tankless?

Often, yes. Whole-house gas tankless units need up to 199,000 BTU, and many older San Francisco homes have a ½-inch line sized for a tank heater. Our survey confirms it before we quote.

How long does installation take?

Most conversions are completed in one day. A like-for-like tankless replacement takes a few hours.

Will a tankless heater really save money?

It cuts standby losses and typically lowers gas usage 20–30%. Payback depends on your usage; we’ll give you a straight answer.

Where can the unit be mounted?

Inside or outside (weather-rated models), on almost any wall with access to gas, water and a vent route. Many customers reclaim an entire closet.

5-Star Reviews

Don't Just Take Our Word For It

Here’s what Bay Area homeowners and businesses say about working with Economy Plumbing.

Chris was prompt, friendly, helpful, and cleaned up after himself. He did a fine job on the repairs and I was still smiling after I wrote the check. Pretty rare for me! I had called a number of places on Yelp and Economy Plumbing was the first to get back to me. Kudos all around!

H.G.Verified Customer

I called in for a Kitchen Clog and I wanted to get this issue FIXED ASAP so I can watch my Giants! I spoke with the representative there. I believe her name was Michelle. She was really nice, and helpful and was able to get someone out to my office in less than an hour. When the technician came — Albert was so prompt and really accommodating. Since I work in the servicing industry, I appreciated the fact that he was courteous and willing to explain things to me. I have no experience in plumbing so he was able give me some pointers to prevent this issue from happening again in the future. I definitely recommend Economy plumbing!

Aaron G.Verified Customer

Joe came out at 10pm for an urgent dishwasher leak, I had airbnb’d my unit and a quick response was crucial. He’s very polite and friendly and got the job done right. I called one other place and they told me they could do it tomorrow and after I told them I needed somebody tonight they said they would charge me an “emergency” fee just for coming out since it was late. Economy plumbing was the first one listed on google’s preferred vendors and rightfully so thanks to Joe!

Omid K.Verified Customer

Highest ratings to Economy plumbing. Spencer was exacting, proactive, factual and comforting. He and Emanual took care with every aspect on assessing multiple issues causing drain backup and leakage in my kitchen and bath. They worked efficiently to get everything repaired including replacement of my entire kitchen sink pipes that were busted and the main drain to the basement: It wasn’t cheap, But after comparing it to the estimated of 2 other companies -it was very fair. I’m super happy with the work and their professionalism. Would definitely use again- these guys are my new plumbers!

Finny BVerified Customer

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