Water Heater Installation

Water Heater Installation in Charleston, SC

Building a new home, finishing an addition, or adding a water heater where there wasn’t one before? The installation is what decides how well that unit runs for the next decade. Pineapple Plumbing installs tank and tankless water heaters for homeowners and builders across Charleston and the Lowcountry. Every job is handled under SC Residential Plumbing License #RBP 44643, we pull the permit, and you get a written estimate before any work starts.

Replacing a water heater that’s failing? See water heater replacement. Thinking about going tankless? See tankless water heaters. Need a fix instead? See water heater repair.

When You Need a New Water Heater Installation

New construction or a major renovation: the system has to be sized, placed, vented and connected to code from the start.
A home addition, in-law suite or ADU: a second water heater can be a better option than running long hot-water lines from the main unit.
Moving the water heater: for example, out of a cramped closet and into the garage or attic, or the other way around.
Changing fuel type: gas to electric or electric to gas. Going to electric needs a dedicated 240-volt circuit. Going to gas needs a gas line and proper venting.
A house that has outgrown its hot water: a growing family, a new soaking tub, or more bathrooms can mean you need more capacity.

Water Heater Options We Install

Tank (Storage) Water Heaters

A 40–50 gallon tank is standard in most Charleston homes. Tank units cost less up front, don’t need electrical or gas upgrades when the home is already set up for them, and typically last 8–12 years with regular maintenance.

Tankless (On-Demand) Water Heaters

Tankless units heat water only when you use it, so they don’t run out. They last 15–20 years and take up much less space. Learn more on our tankless water heater page.

Gas vs. Electric

We install both. The right choice depends on what’s already run to the location, your electrical panel’s capacity, and how much hot water your household uses. We’ll explain the trade-offs in plain language before you decide.

Our Installation Process

Assessment: we look at the location, fuel source, venting, drainage and how much hot water you use, then size the unit to fit.
Written estimate: you get a clear written price before we start.
Permit: we pull the permit for your installation.
Code-compliant installation: we set the unit and make the water, gas or electrical connections, including any required expansion tank, temperature and pressure relief valve discharge, drain pan and venting.
Testing and walkthrough: we check for leaks, set the temperature, show you the shutoff valves and explain basic maintenance.
Clean up: we leave the space the way we found it.

Why Charleston Homeowners Choose Pineapple Plumbing

Licensed: SC Residential Plumbing License #RBP 44643. We pull the permit for every installation.
22+ years of plumbing experience across our team.
Written estimates before work: the price we quote is the price you pay, with no hidden fees.
On-time arrival windows, and we call if anything changes.
Locally owned and veteran owned: not a franchise. Co-owner Austin Holcomb served in the U.S. Marine Corps.
Background-checked plumbers who use shoe covers and drop cloths and clean up before they leave.
Current offer: $100 off a new tank or tankless water heater installation with code HOTWATER100.

Water Heater Installation Service Areas

We install water heaters across the Lowcountry, including Charleston, Mount Pleasant, Summerville, West Ashley, North Charleston, Goose Creek, James Island. See all of our service areas.

Get a Free Estimate

Other Services

Explore our trusted plumbing services for reliable solutions across Charleston and the Lowcountry.

Customer Support

Have a plumbing question or need service? Our friendly team is ready to help with honest advice and reliable solutions.

Call Center

+1 843-739-7438

Email Support

info@pineappleplumbingchs.com

Hours

Monday – Sunday

Open 24 Hours

Emergency Service - Available 24/7

Common Questions

Frequently Asked Questions

Do I need a permit to install a water heater in Charleston, SC?

In most Charleston-area jurisdictions, installing a new water heater requires a plumbing permit and an inspection. Pineapple Plumbing pulls the permit as part of every installation and installs to code.

What size water heater do I need?

Most Charleston homes use a 40–50 gallon tank. Larger households or homes with big tubs may need more capacity or a tankless unit. We size the unit to how many people live in the home and how many fixtures run at once.

Can you install a water heater in a new construction home?

Yes. Pineapple Plumbing installs tank and tankless water heaters in new construction, additions and renovations throughout the Charleston area.

Can I switch from gas to electric, or electric to gas?

Yes, but it's more than a swap. Electric needs a dedicated 240-volt circuit and enough panel capacity. Gas needs a gas line run and proper venting. We spell out the full scope in your written estimate.

How much does water heater installation cost in Charleston?

The cost depends on the unit type, fuel, location and any code upgrades needed. Pineapple Plumbing gives you a written estimate before starting any work, and the price we quote is the price you pay.

Is Pineapple Plumbing licensed to install water heaters in South Carolina?

Yes. Pineapple Plumbing holds SC Residential Plumbing License #RBP 44643 and pulls permits for water heater installations.

Book an Appointment

Schedule Your Water Heater Installation

Call (843) 739-7438 or request service online. We’re available 24/7. Back to the Pineapple Plumbing homepage. We’ll assess the job and give you a written estimate before any work begins.

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Testimonial

Customer Experiences That Inspire Confidence

      EXCELLENT  
   Based on 50 reviews 
    
 
 
 
   
 
 
       Posted on Google  
   
   Clay Wilklow 
 
 
 
 Trustindex verifies that the original source of the review is Google. Austin was very helpful and knowledgeable. Took his time to explain my options and walk me through the process of my repairs.
  
 
      Posted on Google  
   
   Richard Welliver 
 
 
 
 Trustindex verifies that the original source of the review is Google. Pineapple Plumbing recently installed an in‑ground gas line for a pool heater, and their work was exceptional. Their precision, professionalism, and depth of knowledge clearly differentiate them from others in the field. I’m eager to recommend them and continue using Pineapple Plumbing for future repairs and projects.
  
 
      Posted on Google  
   
   Richard J 
 
 
 
 Trustindex verifies that the original source of the review is Google. Austin from Pineapple Plumbing replaced my hot water heater. His courteous professional manner was second to none. Got same day service with top quality workmanship and service at a fair price. I give Pineapple Plumbing my highest recommendation!
  
 
      Posted on Google  
   
   Kevin Hunholz 
 
 
 
 Trustindex verifies that the original source of the review is Google. They were great and very professional! Looking at the job once completed, you can tell they took their time! As well you can tell they did the job as if they were doing it for their own home, which goes a long way. Thank you!
  
 
      Posted on Google  
   
   Jennifer Robinson 
 
 
 
 Trustindex verifies that the original source of the review is Google. Great people, fast response and excellent work! I highly recommend!
  
 
      Posted on Google  
   
   Caroline Desjarlais 
 
 
 
 Trustindex verifies that the original source of the review is Google. These guys are amazing! I called due to a clogged drain and they came out the next day. They even stayed until late evening to ensure the problem was resolved that day. All the technicians were friendly and communicated upon arrival. One of the owners even called to follow up from the visit. I have already recommended them to several people and will continue to highly recommend them to anyone in need of plumbing services.
  
 
      Posted on Google  
   
   4pfcam_ 
 
 
 
 Trustindex verifies that the original source of the review is Google. I had my water heater drained as it was having problems keeping my water hot Austin was great at communicating what needed to be done and identifying the problem throughly !
  
 
      Posted on Google  
   
   D Jones 
 
 
 
 Trustindex verifies that the original source of the review is Google. I just have to say first and foremost Austin was very professional, kind, knowledgeable,and listen to me.Before I called Pineapple Plumding another company came out, so to make a long story short they were going to charge me $700.00. Sent him on his way.And called Pineapple Plumding.Came out the same day.Austin Looked everthing over and sad Everthing is fine.I just saved $700.00 :) Thank You so much Austin and Pineapple Pluming.You will be my forever Plumbing company.Honest Companies do not come by much enymore. This Company is one and a million. Sincerely Mrs. Jones :)
  
 
      Posted on Google  
   
   Amelia Something 
 
 
 
 Trustindex verifies that the original source of the review is Google. So I posted a 5⭐️ review a month or so ago. I had all of my pipes re-done and some fixtures replaced by these wonderful people. Here we are a month later and somehow I have managed to loosen my kitchen sink. I txt them at noon, embarrassed I might add, to need help with something so frivolous. By 2 pm Austin showed up to my house to tighten it, all the while assuring me it was his pleasure and wouldn’t accept a dime from me, as it was a part of my warranty. I will forever suggest these guys to everyone I know and am so grateful they are who I chose when there are so many options out there🥰