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

Avatar for Air Services
Air Services
5.0(
5
)
Tankless Water Heater - RepairTankless Water Heater - InstallWater Heater - Install or Replace+1 more

Serving Diamond, MO and surrounding areas

Approved (Corporate)

In business since 1964

Free estimates

Emergency services offered

Air Services Plumbing has proudly served homeowners across the Ozarks for more than 60 years. Our experienced, professional plumbers are committed to making home service simple and comfortable from the moment we arrive.\n\nWe take the time to listen, diagnose the problem, explain your options, and help you make the right decision for your home. Our clean-cut, trusted technicians treat your home with respect and stand behind the work we perform.\n\nFrom everyday plumbing repairs and drain issues to water heaters and larger plumbing projects, you can count on Air Services for knowledgeable service and quality workmanship.\n\nFor dependable plumbing service from a local team that has been setting the standard in the Ozarks for generations, call Air Services.

15 neighbors recently requested a quote
Avatar for Davis & Son, LLC
Davis & Son, LLC
4.0(
6
)
Water Heater - Repair or ServiceTankless Water Heater - InstallTankless Water Heater - Install - For Business+5 more

Serving Diamond, MO and surrounding areas

Approved

In business since 1985

Free estimates

Emergency services offered

We pride our company on reliability, great communication, \nintegrity, and quality work. We are experts in our trade and will do our best \nto keep you as educated as we can on your particular task or project. We look \nforward to earning your business!

11 neighbors recently requested a quote
Avatar for Webster Construction
Webster Construction
New to Angi
Water Heater - Install or Replace

Serving Diamond, MO and surrounding areas

Approved

Small jobs welcome

I’m a young outgoing individual, I’ve had a full time job since I was 14 trying every trade you can think of I have several years of plumbing under my belt, I’m a skilled framer, I’ve done electric for several years and even done mechanical work, I found a love and passion for handyman work and decided I was ready to take the leap on my own! If you need anything done no job is to big or small don’t be afraid to reach out I’d love to come check it out for you!!

Martin's Plumbing Htg & Ac
4.7(
12
)
Solar Water Heater System - InstallTankless Water Heater - InstallTankless Water Heater - Install - For Business+6 more

Serving Diamond, MO and surrounding areas

"We called Martin's Plumbing to put a new faucet on our kitchen sink. They showed up when they said they would and put it on, even though they were trying to catch up on work because of cold weather.
We had a small leak under the sink for quite some time. Other plumbers said it was just the valve leaking and basically ignored it. When the Martin's were under the sink putting in the faucet they saw it and said the valve could be the problem and that it might be a crack in the plastic pipe leading up to the faucet. They replaced the valve and the pipe, no more leak.
They had to spend more time than they had planned to install the kitchen faucet because of the other issues under the sink.
Their plumbing skills, friendly attitude and effort to communicate and describe what they are doing and any potential problem areas is extremely refreshing. We certainly intend to call them first for any additional services we might need and would highly recommend them to anyone needing a plumber.

"
Recommended by91%of homeowners
C & C Plumbing and Drain Service, LLC
4.9(
16
)
Tankless Water Heater - Repair - For BusinessWater Heater - Install or Replace - For BusinessWater Heater - Repair or Service - For Business

Serving Diamond, MO and surrounding areas

In business since 2017

Credit card accepted

"I hired C&C to replace the entire deteriorating metal pipe plumbing system in this old house. While here, we also had them do some additional add on plumbing. They were extremely knowledgeable. Highly recommended for your old house plumbing needs!"
Response time40 mins
Recommended by100%of homeowners
Avatar for Gary McKinney Plumbing & Sewer
Gary McKinney Plumbing & Sewer
4.1(
37
)
Solar Water Heater System - InstallTankless Water Heater - InstallTankless Water Heater - Install - For Business+6 more

Serving Diamond, MO and surrounding areas

In business since 1971

Free estimates

Emergency services offered

"He arrived at 8:30a.m. The new hot water heater was waiting on site. He took the heater out of the carton and reported to us that it was damaged on top but that he thought it was primarily "cosmetic". He let us decide if we wanted it installed or wanted to return it and get a replacement. Since we had been without hot water for several days, we decided to give this one a try. It would also have meant that we would have to have him return at a later date to install the next water heater. So far it has been doing a great job hearing our water. He was very professional and competent at his job. He took the old heater away for disposal.
"
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Recommended by83%of homeowners
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Water Heaters FAQs, answered by experts

Price variations arise from size, type (tankless or tank), efficiency grades, and installation complexity, including labor and materials.

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.

Most standard residential water heaters, which are typically around 40 gallons and use 240 volts and between 3,500 and 5,500 watts, require a 30-amp, two-pole circuit breaker. For smaller, point-of-use water heaters using 120 volts and between 1,500 and 3,000 watts, a 30-amp breaker is also often adequate. However, some models may have different needs; units that use more watts than average may require a 40-amp breaker, while smaller units might only need a 20-amp breaker. Newer, tankless, or more energy-efficient models can also require a higher amperage. Having the correct breaker size is crucial for safe and efficient operation, so it's best to consult a licensed electrician to determine the specific needs of your water heater.

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.

While a water heater explosion is rare, it is a serious danger. Be aware of these critical warning signs:

  • Sulfur or Rotten Egg Smell: This is a major red flag, especially for gas water heaters. It can indicate a gas leak, which could ignite and cause an explosion.

  • Leaking Pressure Valve: If the temperature and pressure (T&P) relief valve is leaking, it may not be able to properly regulate internal pressure, creating a risk of bursting.

  • Shaking or Rumbling: Loud rumbling or shaking from the tank can be a sign of extreme pressure buildup.

  • Excessive Heat: If the exterior of the water heater feels unusually hot to the touch, the unit may be overheating dangerously.

  • Rust-Colored Water: This can be a symptom of severe internal corrosion that compromises the tank's integrity.

If you notice any of these signs, especially a gas smell, you must act immediately. Shut off the gas supply to the water heater and call a professional plumber right away to prevent a potential disaster.

The Diamond, MO homeowners’ guide to water heater services

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