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

Avatar for Brighthouse Plumbing, LLC
Brighthouse Plumbing, LLC
4.9(
9
)
Tankless Water Heater - InstallTankless Water Heater - Install - For BusinessTankless Water Heater - Repair+3 more

Serving Festus, MO and surrounding areas

Approved

In business since 2000

Credit card accepted

Offers commercial services

"I hired this company to extend the natural gas in my house and would definitely recommend them. I felt that the plumber who did the installation really knew what he was doing and seemed like a great guy. The installation went well and the price was fair."
BrightHouse Plumbing
Water Fountain and Fill Station
Bathtub
Shower
Backflow

+1

Response time10 hrs
Recommended by100%of homeowners
Avatar for Mayo Plumbing Co
Mayo Plumbing Co
4.8(
481
)
Solar Water Heater System - InstallTankless Water Heater - InstallTankless Water Heater - Install - For Business+6 more

Serving Festus, MO and surrounding areas

In business since 1990

Free estimates

Emergency services offered

"Mayo plumbing is amazing! We called John for a leak from our main water line in our basement. He rearranged his schedule to fit us in & didn’t leave until the job was done. He was able to fix the leak with a less invasive method than what another plumbing company we had already contacted quoted us. Many thanks to John! If we ever need plumbing work again, he will be our only call!"
Additional Photos
Additional Photos
1
2
3

+3

Recommended by96%of homeowners
Avatar for Liberty Heating and Cooling
Liberty Heating and Cooling
4.7(
70
)
Tankless Water Heater - InstallTankless Water Heater - RepairWater Heater - Install or Replace+2 more

Serving Festus, MO and surrounding areas

In business since 2010

Free estimates

Emergency services offered

"Got back to me quickly, fixed the issue with my hot water heater rather than having to buy a new one, very thankful. He checked out my heater and air conditioner while he was there and I will have him back to service my AC. Great guy, very friendly, took the time to explain all he was doing. Highly recommend him."
Furnace & Air Cleaner Install
Completion
Completed
Rinnai Tankless Water Heater
Rinnai Tankless Water Heater

+5

Response time6 hrs
Recommended by95%of homeowners
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Water Heaters FAQs, answered by experts

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.

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.

Going from a tank to a tankless water heater is one of the most effective ways to lower your utility bills. The switch also frees up more space and ensures a consistent hot water supply, as the water is heated on an as-needed basis. It costs between $5,400 and $7,400 to install a new tankless water heater. Most installation companies will also help dispose of your old water tank.

Traditional gas or electric water heaters last an average of six to 11 years. However, with excellent maintenance, they can last up to 15 years. Heat pump water heaters, on the other hand, last an average of between 12 and 15 years and potentially longer with proper maintenance. In both cases, your home's water quality can be a determining factor regarding the lifespan of your water heater.

Tankless water heaters are more expensive than those with a storage tank, but they come with some impressive benefits that most homeowners find worth the higher investment. Most importantly, they provide unlimited hot water, so you’ll never run out like you would with a storage tank. Tankless heaters are also more efficient, so comparing gallon-for-gallon, you’ll spend less on hot water with a tankless heater. Tankless water heaters are also smaller, require less maintenance, and tend to last longer than storage tank water heaters.

The Festus, MO homeowners’ guide to water heater services

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