Top-rated tankless water heater installers.

Get matched with top tankless water heater installers in Apex, NC

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Top-Rated Tankless water heater installers in Apex - Updated Nov 2026

Avatar for Household 360
Household 360
4.6(
176
)
Tankless Water Heater - Install

Serving Apex, NC and surrounding areas

Approved

In business since 2011

Free estimates

Warranties offered

"Tim was awesome. He arrived on time. He installed 3 faucets, a garbage disposal, and a hot water heater. He is very personable. He has my recommendations. I will definitely hire him again for any plumbing needs. Patty Upchurch"
Shower Pan Replacement
Attic bathroom
Attic Bathroom
New attic bathroom
Remove fiberglass shower pan

+1

Response time3 hrs
Recommended by93%of homeowners
Avatar for Air Experts Heating, Cooling LLC
Air Experts Heating, Cooling LLC
4.7(
3,419
)
Tankless Water Heater - Install

Serving Apex, NC and surrounding areas

Approved

In business since 1986

Free estimates

Emergency services offered

We keep your heating, cooling, and plumbing equipment working properly and performing at peak efficiency while ensuring your comfort and keeping your air safe. We guarantee 100% satisfaction with all our work. The professionals at Air Experts have been providing comprehensive HVAC services to the residents of Raleigh, Durham, and Chapel Hill since 1986.

3 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Cape Fear Air, Electric & Plumbing
Cape Fear Air, Electric & Plumbing
4.8(
682
)
Tankless Water Heater - Install

Serving Apex, NC and surrounding areas

Approved

Super Service Award Winner

In business since 1973

Free estimates

Emergency services offered

"Chris Cash and his assistant Hunter replaced my underground water service line on 10/27/25. Both were a pleasure to work with and I wouldn’t hesitate to recommend them both for all of your plumbing needs. Chris knows how to take care of his customers and exceeded my expectations again & again!"
cooling
 heating
 air conditioning
 air conditioning
Response time1 day
Response rate100%
239 neighbors recently requested a quote
Avatar for Streamline Services, Inc
Streamline Services, Inc
4.7(
735
)
Tankless Water Heater - Install

Serving Apex, NC and surrounding areas

Approved

In business since 2001

Emergency services offered

Warranties offered

"My prior water heater, a 50-gallon tank, started leaking after 15 years. I called Streamline to confirm that it needed replacement, and to replace it. I was considering a tankless water heater already, and the first tech walked me through the pros and cons, then wrote up an estimate. Two additional techs came the next day to install the heater and the necessary gas and power lines. The only issue I had was that one of the newly installed gas fittings leaked gas into the basement. I shut off the supply valve and called Streamline, and they came out within half an hour to fix it at their expense. Mistakes happen, and I was impressed with how professionally they corrected that one."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+2

Response time1 day
19 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Modern Plumbing of the Triangle, LLC
Modern Plumbing of the Triangle, LLC
4.9(
33
)
Tankless Water Heater - Install

Serving Apex, NC and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Emergency services offered

"Outstanding Service from Modern Plumbing LLC! I had an excellent experience with Modern Plumbing LLC when they installed my new water heater. From start to finish, the service was professional, efficient, and stress-free. The plumber arrived on time, clearly explained my options, and walked me through the entire installation process so I knew exactly what to expect. The installation was done quickly and cleanly, with great attention to detail. Everything works perfectly, and I can already tell the quality of work is top-notch. It’s rare to find a plumbing company that combines expertise, honesty, and great customer service, but Modern Plumbing LLC absolutely delivers. I highly recommend them to anyone needing reliable plumbing or water heater installation—you won’t be disappointed!"
fixture and toilet
Tankless W/H
Response time12 hrs
1 neighbors recently requested a quote
Avatar for Out The Door Plumbing
Out The Door Plumbing
5.0(
48
)
Tankless Water Heater - Install

Serving Apex, NC and surrounding areas

Approved

In business since 2020

Emergency services offered

Warranties offered

"Very responsive and professional. They were extremely helpful in answering all of my questions while I was researching plumbers and the best way to approach my hot water tank replacement. Given their great service and the quality of their work, I thought their pricing was competitive. I wouldn't hesitate to use them again."
Sewer Line Replacement
Sewer Line Replacement
Careful sewer line repair
95ft long main sewer line replacement
Plumbing Waterline Replacement

+14

Response time2 hrs
Response rate94%
9 neighbors recently requested a quote
Cape Fear Air Conditioning and Heating Company, Inc.
4.5(
47
)
Tankless Water Heater - Install

Serving Apex, NC and surrounding areas

Approved

In business since 1973

Free estimates

Emergency services offered

"Chris and his assistant today, Robert, were professional, courteous, and honest. I scheduled them to change out water supply lines on 5 toilets in our new home. Chris assured me that the lines installed were of high quality and did not need to be changed out. I have plans to install a water monitoring system and will definitely use Cape Fear (requesting Chris, of course) for the job. I highly recommend Chris and by association, Cape Fear!"
Response time12 hrs
177 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Carbone Plumbing LLC
Carbone Plumbing LLC
4.9(
7
)
Tankless Water Heater - Install

Serving Apex, NC and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

"Excellent, friendly service. Mike was in and out in no time. His prices are quite good and he was flexible with my requests for upgrading the water heater. He uses one of the top tier quality brands. It was a pleasure working with him."
Water Heater installs
Water Heater
Top vent
Top vent install
Tankless

+1

Response time4 hrs
Recommended by83%of homeowners
...
Showing 1-10 of 105

The Apex, NC homeowners’ guide to tankless water heater installations

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