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TRUSTED BY WASHINGTON, UT HOMEOWNERS

  • Average homeowner rating star icon4.8
    Average homeowner rating
  • Verified reviews icon24
    Verified water heater services reviews

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

Avatar for Marlin Plumbing Services
Marlin Plumbing Services
4.9(
128
)
Water Heater - Install or ReplaceTankless Water Heater - InstallTankless Water Heater - Install - For Business+1 more

Serving Washington, UT and surrounding areas

Approved

In business since 1995

Free estimates

Emergency services offered

"After expert advice from Marlin Plumbing, we did not get a tankless water heater. Our failed water heater was still under warranty, and we took their recommendation to have a new one put in along with a larger water softener. We were very happy with their prompt, reliable service. This should prevent our hot water heater from rusting prematurely. Also learned how to clean out the aeration filter on faucets -- sediment collects there! Very informative and helpful."
Steve
Water Heater and Softener
Range Hood
3 Ton gas furnace
4 Ton gas furnace

+1

Response time6 hrs
Response rate97%
9 neighbors recently requested a quote
Avatar for Mr. Rooter Plumbing of St. George
Mr. Rooter Plumbing of St. George
4.5(
164
)
Tankless Water Heater - RepairWater Heater - Install or ReplaceTankless Water Heater - Install+5 more

Serving Washington, UT and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"Water heater failed on a Sunday. Called Rooter just after lunch and they said they would be at my home by 4:30 to give me an estimate. Their technician got here at 4:00 and I had a new unit installed by 7:30 pm. Great work, great Technician!"
Thank You
Mr Rooter Plumbing
Our Angi Page
Camera Main line
Broken sewer line

+9

12 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Whipple Cooling, Heating, Plumbing & Electrical
Whipple Cooling, Heating, Plumbing & Electrical
3.9(
225
)
Water Heater - Install or ReplaceWater Heater - Repair or ServiceTankless Water Heater - Install+3 more

Serving Washington, UT and surrounding areas

Approved (Corporate)

In business since 1947

Free estimates

Emergency services offered

Since 1947, Whipple Service Champions have kept water moving the right direction in Southern Utah homes. Drain cleaning, leak detection, water heater repair and replacement, repiping, fixture installation, and water treatment across Washington County — where hard water is the rule, not the exception.\n\nEvery job is handled by licensed, insured Service Champions committed to 200 hours of annual training. We show up on time, explain what's wrong in plain language, and give you the price before the work starts — no surprises, no pressure. Because when it comes to your comfort, second place isn't an option.\n\nWhipple is on the way. Let's get your home to gold.\n\nWhipple also handles HVAC and electrical for St. George homeowners.

Our Work
Our Work
Our Work
Our Work
Our Team

+6

22 neighbors recently requested a quote
Recommended by71%of homeowners
Avatar for Southern Utah HVAC & Plumbing Group LLC
Southern Utah HVAC & Plumbing Group LLC
5.0(
7
)
Tankless Water Heater - InstallTankless Water Heater - Install - For BusinessWater Heater - Install or Replace+1 more

Serving Washington, UT and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"Nolan is an Amazing dude! Always super helpful when I call and have questions. Very honest and professional, if you hire anyone else you are making a huge mistake. As a business owner myself it’s hard to find reliable and honest people these days, these guys won’t disappoint!!!!"
Checking Depth
Mini Ex Trenching
AC Condenser
Attic Furnace
Kitchen Sink Install

+6

6 neighbors recently requested a quote
Avatar for Walker Plumbing, Heating Air
Walker Plumbing, Heating Air
5.0(
5
)
Water Heater - Install or ReplaceWater Heater - Repair or ServiceTankless Water Heater - Install+1 more

Serving Washington, UT and surrounding areas

Approved (Corporate)

In business since 2002

Credit card accepted

Founded in 2002 by Master Plumber Brett Walker, Walker Plumbing, Heating & Air is a family-owned and operated company that has been proudly serving St. George and Southern Utah for over 20 years. Brett and his fully licensed team of master plumbers and HVAC technicians are dedicated to delivering top quality workmanship and a great customer experience, with a full fleet of trucks and technicians available 24/7 for any plumbing or indoor comfort issue. From the moment you call, you can expect clear communication, prompt arrival, fast turnarounds, and personalized solutions tailored to your needs and budget. Every technician is licensed, insured, and background checked, and our no-upselling policy means you'll always receive honest, transparent service without pressure. Walker Plumbing, Heating & Air is the go-to home services company for your friends and neighbors in Southern Utah, and we'd love to show you why. \n

34 neighbors recently requested a quote
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Water Heaters FAQs, answered by experts

There are pros and cons to tankless water heaters. They are more efficient than traditional tank water heaters, and maintenance costs are lower. These units are also much more compact. On the other hand, they cost about twice as much to install as traditional tank water heaters and are more limited in terms of flow rate.

When replacing an old unit, you might want to switch from a gas water heater to an electric water heater or vice versa. To do this, you will likely need to add infrastructure to the area. For example, you likely don’t have a gas line that served your old electric water heater. You’d have to call a plumber to put in a new gas line. If you’re replacing a gas unit with an electric one, the plumber will need to safely cap the old gas line. You will then need an electrician to add wiring for the new electric unit.

If you have a tank-type electric water heater, it runs regularly to keep the water at the desired temperature. If you live in a home where you don’t use much hot water, it could seem wasteful to run power to heat water that you’re using infrequently. You could save some power by using a smaller tank, insulating the tank, or lowering the temperature of the water heater.

Typically, only a high-efficiency water heater with an inducer fan can be vented outside the house. Otherwise, your water heater needs to be installed on the inside and vented through the roof. However, certain areas may allow a standard-efficiency water heater to be vented outside. Check your local building codes to be sure.

Yes, most municipalities have codes that require water heaters to have pans. A pan is necessary when a water heater or hot water storage tank is installed in an area where water leakage could cause damage, such as an attic, second floor, or finished basement. Tankless water heaters are not required to have a pan since there is no storage tank.

The Washington, UT homeowners’ guide to water heater services

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