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Top-Rated Tankless water heater installers in New Castle - Updated Nov 2026

Avatar for Done Right Today, Inc.
Done Right Today, Inc.
4.8(
620
)
Tankless Water Heater - Install

Serving New Castle, DE and surrounding areas

Approved

Super Service Award Winner

In business since 2018

Emergency services offered

Warranties offered

"Ryan install a new water heater , Job was done quickly and he explained every thing that he had done and answered all questions i had . Cleaned up everything , i would use this company again"
Water Heater Install
Done Right Today
Parked at a customers house for repair work.
Done Right Today
AC Repair

+1

Response time7 hrs
826 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for Delaware Plumbing Professionals
Delaware Plumbing Professionals
4.6(
641
)
Tankless Water Heater - Install

Serving New Castle, DE and surrounding areas

Approved (Corporate)

In business since 2014

Emergency services offered

Warranties offered

"The Delaware Plumbing Professionals (DPP) that installed my products were Ryan and Anthony. I was very happy with the products and services provided to me. Here are things I want to express in no particular order. 1. Ryan/Anthony were on time. 2. They answered all of my questions. 3. I feel good knowing that my water hardness has decreased and the amount of chlorine in my water is less. (Artesian adds a lot of chlorine.) 4. I now get suds when I shampoo my hair. 5. My water tastes better. 6. I don't get orange rings in my toilet. 7. Ryan/Anthony are nice guys and a pleasure to talk to. 8. I was not pressured into buying anything. 9. I am definitely going to call DPP the next time I have a plumbing issue/need. 10. I will recommend DPP to my friends and family. Thank you, Alfred (Chad) Alspach"
Additional Photos
Water Heater Special
Response time1 day
Response rate100%
13 neighbors recently requested a quote
Avatar for Delaware Plumbing Professionals, LLC
Delaware Plumbing Professionals, LLC
4.7(
459
)
Tankless Water Heater - Install

Serving New Castle, DE and surrounding areas

Approved

Super Service Award Winner

In business since 2013

Emergency services offered

Warranties offered

"I worked closely with the manager regarding my water heater purchase/ install, he was very accommodating. Steve did the removal and install of the water heater and he did an excellent job, very professional and great customer service!"
trade show
new water conditioner
sewer line replacement
well to public water conversion
water conditioner

+4

Response time40 mins
393 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Horizon Services, LLC (DE)
Horizon Services, LLC (DE)
3.8(
1,316
)
Tankless Water Heater - Install

Serving New Castle, DE and surrounding areas

Approved

In business since 1989

Free estimates

Emergency services offered

Experience The Horizon Difference. \n \nOn-Time Service. Up-Front Pricing. And The Job Done Right and Clean the First Time. GUARANTEED! \n \nHorizon Services is the region's largest and most well respected plumbing, heating and air conditioning company, with nearly 600 employees serving tens of thousands of homeowners throughout Delaware, Southeastern Pennsylvania, Southern New Jersey, and Northeastern Maryland. After a quarter of a century in business, Horizons Services remains fully committed to setting the industry standard for customer service, installation, and focusing on things that are important to busy homeowners: respect for their time, their home and their property; up-front pricing, and an unconditional 100% money back guarantee. \n

Horizon Tech under the sink
Horizon tech with homeowner
1 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Harris Plumbing, Heating, Air & Electrical
Harris Plumbing, Heating, Air & Electrical
3.9(
54
)
Tankless Water Heater - Install

Serving New Castle, DE and surrounding areas

Approved

In business since 1988

Credit card accepted

Customers say: Quick response

"I have a maintenance contract. Today Fabian came out. He was very thorough. He spent two hours at my condo performing all kinds of tests. Before he left he went over things I could do to get better performance from my heater. I appreciate the fact that he did not try to pressure me into picking something. He emailed me (while in the truck) options and also explained different ways to pay for it. He noticed the oxygen in my home. My husband had CHF and COPD so I was specifically interested in the ways I can help his breathing better. I believe in todayâ s environment itâ s difficult for companies to get really good employees. This young man , 20, had a great work ethic and a bright future. Very pleased with the service I have received. Thank you Harris."
Team
Team
Team
Truck
Truck

+8

Response time1 day
438 neighbors recently requested a quote
Recommended by26%of homeowners
F.H. Furr Plumbing Heating AC & Electrical
5.0(
5
)
Tankless Water Heater - Install

Serving New Castle, DE and surrounding areas

Approved (Corporate)

Emergency services offered

Coastal living on Delaware’s Eastern Shore means your cooling and heating systems face constant challenges from salt air, moisture, and temperature swings. Whether you're by the beaches, inland, or up in New Castle, our HVAC specialists deliver solutions that stand up to local conditions while maximizing your home's efficiency. Plus, we tackle all plumbing and electrical issues when your home needs it most. Book your service with F.H. Furr today and enjoy quick, reliable comfort backed by licensed technicians.

5 neighbors recently requested a quote
Avatar for Benjamin Franklin Plumbing
Benjamin Franklin Plumbing
4.2(
141
)
Tankless Water Heater - Install

Serving New Castle, DE and surrounding areas

Approved

In business since 1991

Free estimates

Emergency services offered

"I spoke with three businesses/ contractors. B. Franklin had the most helpful workers, the best pricing, and great annual package options for all of my plumbing concerns."
Project Photos
Response time3 days
Response rate100%
36 neighbors recently requested a quote
Avatar for Zoom Drain Delaware
Zoom Drain Delaware
4.9(
10
)
Tankless Water Heater - Install

Serving New Castle, DE and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

"The men worked very hard...VERY . I have nothing to compare it to but it seemed that a broader auger might have boared thru the roots more efficiently.I believe it was only 2.5 inches vs the wide variety of water jet heads which you use primarily. Nomatter....I am satisfied that my drain s open. I can't comment accurately o bang for my buck as I have nothing to compare with;however I am happy to not be mucking thru the flooded basement and compliment the fellows on their determination!"
Video inspection camera
Locator
Safely cleaning stairwell storm drain
Zoom Truck with Jet System
Pipe Burst

+2

Response time7 hrs
Response rate98%
20 neighbors recently requested a quote
Avatar for Burns and McBride
Burns and McBride
3.8(
16
)
Tankless Water Heater - Install

Serving New Castle, DE and surrounding areas

Approved

In business since 1949

Free estimates

Emergency services offered

"Everyone was professional, friendly and informative. Phone calls were returned promptly and appointments were kept on time. Very happy with the installation and overall experience."
Response time2 days
50 neighbors recently requested a quote
Recommended by100%of homeowners
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