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TRUSTED BY MAULDIN, SC HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon157
    Verified water heater services reviews

Top-Rated Water heater pros in Mauldin - Updated Nov 2026

A+ WATER HEATERS AND PLUMBING LLC
4.9(
22
)
Water Heater - Install or ReplaceTankless Water Heater - InstallSolar Water Heater System - Install+6 more

Serving Mauldin, SC and surrounding areas

Approved

Super Service Award Winner

In business since 2000

Free estimates

Emergency services offered

"The gentleman serviced my tankless water heater and also fixed several other problems that he found. I highly recommend the company and it's employee(s)"
New GE Gas Water Heater
Top
Well Pump re plum
Well pump re plum
Old

+13

Response time1 hour
Response rate93%
8 neighbors recently requested a quote
Avatar for Easy Air + Heat + Plumbing
Easy Air + Heat + Plumbing
4.7(
38
)
Water Heater - Repair or ServiceTankless Water Heater - Repair

Serving Mauldin, SC and surrounding areas

Approved

In business since 2013

Free estimates

Emergency services offered

"Quick! Contacted me within minutes of Home Advisors inquiry, showed up and did outstanding work within 3 hrs of initial contact - even though it was a no-rush job. Got my water heater set up in a jiffy; good price and I am glad I called them. Would highly recommend."
Response time8 hrs
23 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for Foothills Plumbing & Construction
Foothills Plumbing & Construction
4.9(
129
)
Solar Water Heater System - InstallTankless Water Heater - InstallTankless Water Heater - Install - For Business+6 more

Serving Mauldin, SC and surrounding areas

Approved

Super Service Award Winner

In business since 2009

Free estimates

Emergency services offered

"Removed old water heater and installed new water heater and brought water heater up to code. They arrived on time and performed the work efficiently and neatly. The price for the direct vent water heater plus installation was about $250 less than another local quote. Overall I am very satisfied with the price and quality of the installation."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+73

Response time9 hrs
Response rate100%
1 neighbors recently requested a quote
Avatar for Ken O'Brien Plumbing Heating & Air
Ken O'Brien Plumbing Heating & Air
4.9(
26
)
Tankless Water Heater - RepairWater Heater - Install or ReplaceWater Heater - Repair or Service

Serving Mauldin, SC and surrounding areas

Approved

In business since 2015

Free estimates

Warranties offered

"Ken replaced our water heater. Seems to know his stuff, and it's working fine. He had to take a trip out to get a missing part that he thought he had, but he adapted on the fly and still got the job done the same day only taking about an hour longer than expected. Friendly and capable."
Lenox gas furnace
Carrier heat pump
Tankless water heater
Kohler toilet install
Response time9 hrs
Response rate88%
3 neighbors recently requested a quote
Avatar for Three Sons Plumbing LLC
Three Sons Plumbing LLC
5.0(
21
)
Water Heater - Install or Replace

Serving Mauldin, SC and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Emergency services offered

"We had a situation the evening before, with a leak in an upstairs bathroom tub that sent water down into the master bathroom. The remediation company came that next morning to dry things out, but they did not have the skillset to work on the actual plumbing problem. I reached out to Angi's list, put in what I was looking for and selected Three Sons Plumbing. When I hit the go button on Angi's list, I received a call within a few minutes from Brandon the owner. He came over immediately and assessed the problem. He and his helper worked with the remediation team and had the plumbing issue knocked out in less that 45 minutes. Great service. Very reasonable rate. Overall job well done. I would recommend Three Sons anytime. Sean"
Soaking Tub
Response time4 hrs
Response rate95%
Recommended by7%of homeowners
Avatar for All About Plumbing SC LLC
All About Plumbing SC LLC
4.6(
16
)
Water Heater - Install or ReplaceTankless Water Heater - InstallTankless Water Heater - Repair+1 more

Serving Mauldin, SC and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

"It went awesome. I have never felt more comfortable with someone fixing my problem with a crew of guys at my house. They were clean, personable, and extremely professional. I am very happy with the service that I have received. I was referred to them by a coworker and they are honest with what they do and will do anything to help you out! i would highly recommend All About Plumbing to everyone i know, even strangers! Thank you Steve and your crew for all that you have done for me and my family. "
Modern kitchen island
Modern kitchen island
Water heater maintenance
Drain work
Drain work

+3

17 neighbors recently requested a quote
Recommended by46%of homeowners
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Water Heaters FAQs, answered by experts

Yes, you can replace a current tank water heater with a tankless model or vice versa. If you’re maintaining the same fuel source—gas or electricity—the switchover should be smooth. A conventional tank requires open floor space, while a tankless model can be wall-mounted. If you’re switching to a tank water heater, you might need to clear space for it. Gas-powered tankless water heaters need a large volume of gas when they start running to heat the water instantly. You might need to increase the size of the gas line when going from a tank to a tankless model.

A tankless water heater with a flow rate of 10 GPM should replace a conventional 50-gallon water heater. To avoid a surprise cold shower or two and to keep your energy costs in check, it's important to replace a conventional tanked water heater with the equivalent tankless water heater. Your household size and the number of hot-water-using devices you use at once can help you determine the best-size tankless water heater.

Unless they are connected to the same system, boilers and water heaters will both need their own expansion tanks. The only case they wouldn’t have separate expansion tanks is if the boiler is pulling double duty and managing a heating system while also supplying hot water for a home. In which case, you may not need a hot water heater.

Depending on the brand of water heater, you may need to install an expansion tank in order to meet the conditions for warranty coverage. It’s important for consumers to read the fine print of the warranty to see if an expansion tank is necessary. Even if an expansion tank isn’t required for the warranty, it’s usually mandated by building codes—although not for tankless water heaters.

It is very difficult and dangerous to install your own water heater, so we strongly recommend against tackling this as a DIY project. Not only will you need to wire your water heater, but you’ll also need to connect plumbing to the intake and outlet. Sweating copper pipes and connecting wiring properly are skills most DIYers don’t have, and even if you do feel confident you can do it, working with water and electricity always leaves the potential for electrocution. Hiring a local water heater installer is well worth the investment.

The Mauldin, SC homeowners’ guide to water heater services

From average costs to expert advice, get all the answers you need to get your job done.