Top-rated water heater pros.

Get matched with top water heater pros in Arnold, MO

Enter your zip and get matched with up to 5 pros

Need a pro for your water heater service project in Arnold, MO?

Select your specific project to find the pro for you.

TRUSTED BY ARNOLD, MO HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon124
    Verified water heater services reviews

Verified Reviews for Water Heater Service pros in Arnold, MO

*The Angi rating for Water Heater Service companies in Arnold, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Water Heater Service needs.

*The HomeAdvisor rating for Water Heater Service companies in Arnold, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Water Heater Service needs.

Last update on February 24, 2026

Find Water heater pros in Arnold

Avatar for Dunn Heating Air Conditioning and Plumbing
Dunn Heating Air Conditioning and Plumbing
4.7(
273
)

Serving Arnold, MO and surrounding areas

Approved

In business since 2003

Free estimates

Emergency services offered

"This was a complex retrofit tankless water heater installation and out of 30+ companies called and solicited for this project, Brett and Dunn's HVAC was the only company to 1) entertain performing the installation correctly (gas line sizing and calculations), 2) had prior experiencing working with tankless heaters, and 3) took the time to work with me on a long list of specifications. These are bulletproof systems if the installation is done correctly and Dunn/Brett took the time to ensure the install was on point and everything went smoothly. They also installed a softener and filtration system. Everything went well from bid to install and I highly recommend Brett and Dunn's - will use again as I could not be more pleased!"
Additional Photos
Response time2 days
31 neighbors recently requested a quote
Recommended by90%of homeowners
Request Quote
Avatar for Liberty Heating & Cooling
Liberty Heating & Cooling
4.8(
46
)

Serving Arnold, MO and surrounding areas

Approved

Super Service Award Winner

In business since 2017

Emergency services offered

Warranties offered

"Remove electric water heater and install a new high efficiency gas water heater."
A/C replacement
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+10

5 neighbors recently requested a quote
Recommended by93%of homeowners
Request Quote
Avatar for Anton's Plumbing, Heating/Cooling & Energy Experts
Anton's Plumbing, Heating/Cooling & Energy Experts
4.7(
514
)

Serving Arnold, MO and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1979

Free estimates

Emergency services offered

"Anton’s Air Conditioning and Heating installed a tankless water heater. We are so happy to never run out of hot water. The installers were very professional. I highly recommend Anton’s!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+18

Response time1 day
Response rate86%
18 neighbors recently requested a quote
Request Quote
Avatar for Anytime Plumbing Services
Anytime Plumbing Services
5.0(
379
)

Serving Arnold, MO and surrounding areas

Approved

In business since 2017

Free estimates

Credit card accepted

"I would highly recommend Anytime Plumbing! The customer service by Steve was excellent! Friendly, Professional and very responsive. We needed a water heater replaced on a Friday and he was at my house the same day within an hour! He also completed with Rebate form for the water heater with an envelope and stamp too! The pricing was affordable and less than competitors in the area! I will definitely call Anytime Plumbing in the future and recommend to my family and friends!"
Dual waterheaters
Dual waterheaters
Dual waterheaters
Single waterheater
Response time3 hrs
Response rate86%
Recommended by100%of homeowners
Request Quote
Avatar for Anton's Plumbing, Heating/Cooling Energy Experts
Anton's Plumbing, Heating/Cooling Energy Experts
4.6(
81
)

Serving Arnold, MO and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"They came to my rescue during a cold spell and my furnace died. Another company were going to charge my several thousand more for not as good of a furnace. I am extremely happy I went with Total Heating and Cooling!"
Response time6 hrs
Recommended by95%of homeowners
Request Quote
Avatar for Express Services Plumbing LLC
Express Services Plumbing LLC
5.0(
24
)

Serving Arnold, MO and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Credit card accepted

"I am the owner of Ricksheatandair this company does all my plumbing needs including water heaters, and plumbing repairs. We have been working together for 5 or 6 years….. great company to work with."
Response time10 hrs
2 neighbors recently requested a quote
Recommended by4%of homeowners
Request Quote
Avatar for Brighthouse Plumbing, LLC
Brighthouse Plumbing, LLC
4.9(
9
)

Serving Arnold, MO and surrounding areas

Approved

In business since 2000

Credit card accepted

Offers commercial services

You can expect our technicians to provide timely service, a clear explanation of the work to be performed, and upfront pricing. We focus on providing industry best customer service from start to finish. Our technicians are insured, licensed and bonded.

BrightHouse Plumbing
Water Fountain and Fill Station
Bathtub
Shower
Backflow

+1

Response time10 hrs
Recommended by100%of homeowners
Request Quote
...
Showing 1-10 of 83
Water Heaters questions, answered by experts

Electric water heaters typically last 10 to 20 years, though proper maintenance can extend their lifespan. If your unit is over a decade old and showing signs of inefficiency—such as higher energy bills, frequent repairs, or leaks—replacement is a smart investment. Tankless models last over 20 years, which can make them a longer-lasting alternative to traditional tank water heaters.

Water heater installation code requirements are in place to keep your family and home safe. Water heaters that are installed wrong can simply not work. However, that's an, if you're lucky, type of situation. More commonly, incorrectly installed water heaters pose a real threat from carbon monoxide poisoning, gas leaks, water leaks, and even explosions. 

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.

A tankless water heater with a flow rate of 10 GPM should replace a conventional 50-gallon water heater. To avoid a surprise cold shower or two and to keep your energy costs in check, it's important to replace a conventional tanked water heater with the equivalent tankless water heater. Your household size and the number of hot-water-using devices you use at once can help you determine the best-size tankless water heater.

You can use multiple tankless water heaters, but that doesn’t mean you should. Adding multiple tankless heaters adds considerable cost to your home in both parts and installation costs. Also, you’re adding many more points of failure in the system, making plumbing issues harder to diagnose. More heaters mean more maintenance, and insurers may want a word regarding the increased risk of water damage. A single, larger unit makes more sense in most situations.

The Arnold, MO homeowners’ guide to water heater services

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

See all articles