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

Avatar for Delaware Plumbing Professionals
Delaware Plumbing Professionals
4.6(
641
)
Tankless Water Heater - InstallTankless Water Heater - RepairWater Heater - Install or Replace+1 more

Serving Delmar, 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 Seaside Plumbing, Inc.
Seaside Plumbing, Inc.
4.4(
210
)
Water Heater - Install or ReplaceTankless Water Heater - InstallWater Heater - Repair or Service+5 more

Serving Delmar, DE and surrounding areas

Approved

In business since 2003

Emergency services offered

Warranties offered

"I made an appointment and they were on time, professional and knowledgeable about product I was looking for. They had the tankless water heater I wanted in stock and installed it that day. Very happy with the job and Austin their plumber was excellent! I would recommend them."
Annual Oldest Water Heater Contest Winner!
Portfolio
It's Never Too Early to Learn Plumbing!
Quarterly Toilet Giveaway Winner
The Seaside Team

+1

Response time1 day
82 neighbors recently requested a quote
Recommended by86%of homeowners
F.H. Furr Plumbing Heating AC & Electrical
5.0(
2
)
Tankless Water Heater - InstallTankless Water Heater - RepairWater Heater - Install or Replace+1 more

Serving Delmar, DE and surrounding areas

Approved (Corporate)

"My heat pump which had been installed 2 years ago by FH Furr suddenly stopped working Sunday afternoon. With the heat warnings in effect, I knew I needed help, FAST! Blair arrived this morning abd diagnosed the issue and replaced the condensation pump. These new "smart" systems have more brains than some humans!! When the pump failed, it shut down the entire system. However, Blair had the old school know-how and work ethic to get my system back online and back to normal. I have seen a nice change in technicians in the last 2 years and am always pleased to have them come out and fix any issues I may have. Keep up the good work!!"
5 neighbors recently requested a quote
Avatar for Horizon Services, LLC (DES)
Horizon Services, LLC (DES)
3.0(
2
)
Tankless Water Heater - InstallWater Heater - Install or ReplaceWater Heater - Repair or Service

Serving Delmar, DE and surrounding areas

Approved

In business since 1989

Emergency services offered

Warranties 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 Plumber under sink
Plumber in Kitchen with Customer
Horizon Plumber crawl space
1 neighbors recently requested a quote
Avatar for JM Stephens Plumbing & Heating
JM Stephens Plumbing & Heating
4.9(
118
)
Solar Water Heater System - InstallTankless Water Heater - InstallTankless Water Heater - Install - For Business+6 more

Serving Delmar, DE and surrounding areas

In business since 1991

Free estimates

Emergency services offered

"Jim clearly and sensibly answered questions about the issues with my old toilet, then gave me prices and ranges of new ones that he would recommend. He also replaced the sump pumps that I had with new ones of the same kind, which is critical because I am on a street that is prone to flooding and the pumps run every day. He was prompt and pleasant to deal with, and his total price on the pumps was nearly $150 less than another price I was quoted. He likes to talk if someone is nearby, but does exactly what he says he will do and it is quality work so I would not hesitate to go to another room if not feeling conversational!"
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Recommended by99%of homeowners
Avatar for Air Temp Solutions
Air Temp Solutions
4.7(
59
)
Solar Water Heater System - InstallTankless Water Heater - InstallTankless Water Heater - Install - For Business+6 more

Serving Delmar, DE and surrounding areas

In business since 2011

Emergency services offered

Credit card accepted

"Naturally, on the hottest weekend of the summer in 2019, with a houseful of guests for that weekend, the capacitor went. Normally, I'd order the part and fix it myself, but that would have taken days to acquire. Air Temp showed up first thing in the morning the following day, and quickly verified the broken part and replaced it. Sure, of course it was more than doing it myself--but that's not the point. They were timely, had the part in hand, and were extremely reasonable on the price. We use them for our annual AC and heater checkups as well and will continue to do so for the foreseeable future. I highly recommend the team."
Recommended by91%of homeowners
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Water Heaters FAQs, answered by experts

The size needed for your expansion tank is determined by the size of your home's water heater. Expansion tanks are available in 2-gallon and 4.5-gallon sizes. A 2-gallon tank will be appropriate for water heaters up to 50 gallons. An adequately sized tank should have a volume that equals 2% to 5% of the water volume within the system. A plumber can evaluate your home's water pressure, water heater size, and other factors to provide suggestions for picking out the best expansion tank.

Excessive pressure (above 80 psi) puts too much stress on plumbing pipes, joints, and fixtures. This can lead to leaks and burst pipes. Plus, it shortens the lifespan of appliances, can waste water, and can raise your utility bills. High water pressure might feel like a gift, but it’s actually a silent threat to plumbing.

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.

There are many issues that can cause cold showers, but the most likely is a problem with your water heater, especially if other fixtures also don’t get hot water. If it’s just your shower not getting hot water, you likely have a broken or damaged shower cartridge. You can replace this yourself or hire a plumber to do the work for you if you’re not comfortable working with plumbing.

A leaking water heater could potentially last for a few weeks or months before you need to repair it. However, it's not advisable to wait too long. Once your water heater starts leaking, it's likely that the underlying cause of the leak is getting worse as time goes on. Without immediate repair, your water heater could fail. Instead of using a leaky water heater, you should turn it off and call a pro to fix it.

The Delmar, DE homeowners’ guide to water heater services

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