Tank or tankless — which should I get?

Tank is cheaper to install and fine for most San Antonio homes. Tankless costs more upfront but provides endless hot water and lasts 20+ years. We'll size based on your actual usage, not a sales script.

How long does the install take?

Tank replacements are usually done same-day. Tankless conversions can take 1–2 days because of venting and gas line work.

In San Antonio, water heater replacements typically require a permit. We pull it.

Depends on household size and usage patterns. We'll size correctly during the estimate — no oversize-and-overcharge.

Can I get tankless if my house has electric water heat?

Yes, but check the electrical panel — tankless electric units draw a lot of amps. Sometimes a panel upgrade is needed.

Manufacturer warranty on the unit (typically 6–12 years) plus our full labor warranty on the install.

New 50-gallon electric water heater installed and connected with insulated lines and EnergyGuide label still on the tank

Resource Guide

Tank vs Tankless Water Heater Guide

A straight-talking guide from the owner who installs every job. Water Heater Installation & Replacement in San Antonio.

Call Now: (361) 562-8695 Get Free Estimate

Installed by Hector · 24-48 Hr Turnaround · Se Habla Español

Licensed Contractor
Onyx Certified
Home Depot Installer
Lifetime Warranty
14+ Yrs Experience
Se Habla Español
Veteran & Senior Discounts

Back to Water Heater Installation & Replacement

Tankless heats on demand. Endless hot water, smaller footprint, higher install cost.

Tank is simpler, cheaper to install, and fine for most homes.

We size based on your real usage, not a sales script.

1. Cost & Pricing Overview

Typical price range

$1,400–$5,500 installed (tank) — $3,800–$8,500 (tankless)

What affects the cost

Tank size or tankless capacity (BTU/GPM)
Gas vs. electric
Venting changes (especially for tankless conversions)
Gas line upsize for high-BTU tankless
Permit fees in some jurisdictions
Removal/disposal of old unit

When a quote is required

We bid the install in writing. No hourly billing. Per the U.S. Department of Energy, water heating is the second-largest home energy use — sizing it right matters.

Want a real number for your home? Request a free estimate.

2. How the Service Works

Here's exactly what to expect from start to finish.

1On-site assessment of existing setup and code requirements.
2Recommend the right size and type for your home.
3Drain and remove old unit.
4Install new unit, tie in supply, gas/electric, vent, and T&P valve.
5Test, fill, and walk you through operation.

3. Common Problems, Signs & Symptoms

If you're seeing any of these, it's probably time to call.

Unit is over 10 years old

Average tank life is 8–12 years. Replacing on your terms is far cheaper than an emergency replacement after a tank rupture.

Rusty or discolored hot water

Rust in hot water (but not cold) means the tank is corroding from the inside. It will fail — usually catastrophically.

Popping or rumbling sounds

Sediment buildup at the bottom of the tank causes this. Once it starts, efficiency drops and tank failure follows.

Water pooling around the base

A leaking tank cannot be repaired. It needs replacement before it fails completely.

Running out of hot water faster than before

Either the tank capacity no longer matches your household, or sediment has reduced effective capacity. Either way, time to evaluate.

4. Frequently Asked Questions

Authoritative source

U.S. Department of Energy: Water heating efficiency

Source: U.S. Department of Energy

Bottom line

We will tell you whether you actually need tankless or whether a quality tank unit is the smarter spend for your home. Free estimates within 30 miles of San Antonio.

Related guides in Plumber

Questions about water heater installation & replacement?

Call Hector. He'll give it to you straight.

Call (361) 562-8695 Request a Free Estimate