Water Heater Replacement & Installation
When a water heater is old, leaking, undersized, or no longer worth repairing, replacement may be the more practical and reliable option. Choosing the right unit and installing it correctly matters for safety, performance, and long-term value.
Wills Plumbing & Testing Service provides water heater replacement and installation for tank and tankless systems for customers throughout San Antonio and nearby communities, depending on location and current availability.
35 years of licensed plumbing experience in the San Antonio area — 33 of them as a licensed Master Plumber and Responsible Master Plumber (RMP).
RMP-led plumbing experience backed by Rinnai ACE certification, Rinnai Level 1–3 training, Rinnai commercial tankless and Demand Duo training, Navien certification, A.O. Smith commercial National Service Provider status, Rinnai commercial National Service Provider status, and A.O. Smith residential and commercial warranty service provider experience.
Manufacturer names, training, certifications, and service-provider designations are used to describe Will’s Plumbing & Testing Service’s documented experience and qualifications. Use of a manufacturer name does not imply exclusive dealer status, manufacturer ownership, or endorsement beyond the stated certification, training, warranty, or service-provider designation.
When Replacement Is Better Than Repair
Repair is often the right call for an isolated, serviceable problem. Replacement may be the better option when the tank has failed, the unit is near the end of its service life, repairs are becoming frequent or costly, the installation is unsafe, or the water heater is undersized for the household or business demand.
Wills Plumbing & Testing Service evaluates the age, condition, safety, and performance of the existing unit before recommending replacement, so the decision is based on practical need rather than assumption.
Choosing the Right Water Heater
The right water heater depends on hot-water demand, available space, fuel type, venting, and the existing gas, electrical, and water connections. An undersized unit can struggle to keep up, while the wrong configuration can create installation or code issues.
Wills Plumbing & Testing Service reviews your usage needs and the property conditions to help match the replacement to the home or business.
Recent Installations in San Antonio
Tank vs. Tankless Considerations
Standard tank water heaters store and heat a set volume of water, while tankless units heat water on demand. Tankless conversions can offer efficiency and space benefits, but they may require changes to gas sizing, venting, electrical, or water connections depending on the existing setup.
Wills Plumbing & Testing Service explains the practical trade-offs and what each option would involve for your specific installation, so you can make an informed choice.
Our Replacement Process
Wills Plumbing & Testing Service safely removes the failed or outdated unit and installs the replacement according to the property, usage, access, and utility setup. We address the connections, fittings, and supports needed for proper operation.
Visible safety or code issues associated with the installation, such as venting, gas connections, shutoff valves, drain pans, expansion tanks, or temperature and pressure relief, are reviewed and addressed as part of the approved scope of work when required.
Code and Safety Details That Matter
Water heater installation involves more than connecting a new unit. Venting, gas connections, electrical components, shutoff valves, drain pans, expansion tanks, temperature and pressure relief valves, clearances, and proper connections all affect safety and code compliance.
Improper installation can create safety risks and may not meet code. Water heater replacement should be handled by qualified, licensed professionals.
Why Licensed Plumbing Experience Matters
Water heater replacement combines product selection, safe removal, proper connections, gas and venting safety, and code-aware installation. Experienced, licensed work helps avoid undersizing, unsafe conditions, and installation problems that show up later.
Work is performed by or under the supervision of a Responsible Master Plumber licensed by the Texas State Board of Plumbing Examiners (TSBPE), in accordance with applicable state and local plumbing codes. Wills Plumbing & Testing Service brings 35 years of licensed plumbing experience in the San Antonio area, including 33 years as a licensed Master Plumber and Responsible Master Plumber (RMP).
Frequently Asked Questions
How do I know when to replace my water heater?
Replacement may make sense when the tank has failed, the unit is near the end of its service life, repairs are frequent or costly, the installation is unsafe, or the water heater is undersized. The condition and age of the unit should be evaluated before deciding.
Can I switch from tank to tankless?
In many cases, yes. A tankless conversion may require changes to gas sizing, venting, electrical, or water connections depending on the existing setup. Wills Plumbing & Testing Service explains what the conversion would involve for your property.
How long does replacement usually take?
It depends on the type of unit, the existing connections, access, and any code or safety corrections needed. Wills Plumbing & Testing Service can explain what to expect for your specific installation.
What size water heater do I need?
The right size depends on hot-water demand, the number of fixtures and occupants, and usage patterns. An undersized unit can struggle to keep up. Wills Plumbing & Testing Service reviews your needs to help match the unit to the property.
Need Water Heater Replacement Help?
If your water heater is leaking, aging, undersized, or no longer worth repairing, call Wills Plumbing & Testing Service to discuss water heater replacement and installation options.