Water Heater Installation & Repair in Columbia
Water heaters don't give much warning before they fail. One day the shower runs cold, or a tank starts leaking onto the garage floor, and you need someone who can get to the house quickly and do the job right. In Irmo, we've identified 7 businesses that handle water heater installation and repair, ranging from tank replacements to tankless conversions and everything in between.
What the work actually involves
Installation covers sizing the right unit for your household, disconnecting and hauling away the old tank, and bringing the new setup up to current code, which often means adding an expansion tank, updated venting, or a drain pan depending on where the unit sits. Repair work is usually diagnosing why a tank isn't heating, isn't holding pressure, or is leaking from a fitting or the tank shell itself. A good technician will tell you honestly when a repair makes sense versus when replacement is the smarter money.
What to check before you hire
Ask whether the plumber is licensed in South Carolina, carries liability insurance, and pulls permits for water heater swaps (many municipalities require it). Get a clear quote that separates labor, unit cost, and any code-related upgrades, and ask about warranty terms on both the equipment and the installation labor. Same-day or next-day availability matters if you're dealing with a leak.
How we score these businesses
Our rankings weigh licensing, insurance, response time, review consistency, and how transparent each company is about pricing. You can see the full breakdown in our methodology, and the complete ranked list is on our best plumbers in Irmo guide.
Find matching water heater installation & repair
No charge, no obligation. Describe your job and we will connect you with suitable plumbers.
All water heater installation & repair, ranked by score and relevance
92 businesses. The order weighs each business's overall score by how much of its reviewed work is water heater installation & repair, so a lower-scored specialist can rank above a higher-scored generalist. Filter and sort below, or open the full map view.
Enquiries submitted through our contact forms may be shared with partner providers who can do the work. We may earn a referral fee for these introductions, but our rankings and scores are determined by our published method only and are never affected by referral fees.
Common questions about water heater installation & repair
- How much does water heater installation typically cost?
- For a standard 40-50 gallon tank replacement, expect roughly $1,000 to $2,500 including the unit and labor, depending on brand and whether code upgrades like expansion tanks are needed. Tankless installations run higher, often $2,500 to $4,500, since they usually require new venting and sometimes electrical or gas line work.
- How often does a water heater need to be replaced?
- Tank water heaters typically last 8 to 12 years. If yours is past that age and starting to make noise, leak, or produce lukewarm water, it's usually more cost-effective to replace than repair.
- What should I expect during a repair visit?
- A technician should inspect the unit, test the thermostat and heating element or gas valve, check for sediment buildup, and check the pressure relief valve before quoting a fix. If the tank itself is rusted or leaking from the shell, no repair will hold, and replacement is the only real option.
- How can I tell if a plumber does quality work?
- Look for clear upfront pricing, proof of licensing and insurance, and a willingness to explain why they recommend a specific unit size or repair. Consistent, detailed reviews mentioning cleanup, punctuality, and follow-up service are a better signal than a high star average alone.
Guides to choosing water heater installation & repair
- Tankless vs. tank water heaters: how to choose
A plain comparison of tankless and tank water heaters: upfront cost, running cost, lifespan, and which one fits your household.