Expert Water Heater Installation in Wildwood, MO

When your water heater stops working or struggles to keep up with your household’s needs, comfort and convenience disappear quickly. At Castlewood Plumbing, we believe that reliable hot water should never be a question. For over 30 years, our licensed and insured plumbers have provided trusted water heater installation services in Wildwood, Ballwin, Chesterfield, and throughout West St. Louis County.



We install both traditional and tankless systems, delivering exceptional results and same-day service to get your home back to comfort fast. With honest pricing, friendly service, and guaranteed satisfaction, we make sure your new water heater is installed safely, efficiently, and built to last.

Why Homeowners Choose Castlewood Plumbing

Choosing the right plumbing company for your installation is just as important as choosing the right water heater. At Castlewood Plumbing, our goal is to make your experience easy, transparent, and stress-free.



Here is why so many homeowners across West St. Louis County trust us for their hot water needs:

  • Same-Day Service: We offer same-day appointments to restore your hot water as quickly as possible.
  • Family-Owned and Operated: Since 1993, our family has proudly served the local community with integrity and professionalism.
  • Licensed, Bonded, and Insured: Every technician is trained and certified to ensure top-quality workmanship.
  • Upfront, Honest Pricing: You will always know the full cost before work begins.
  • Satisfaction Guaranteed: We stand behind our work with excellent warranties and a 100% satisfaction guarantee.

Our commitment to service excellence means you can trust that your new water heater will be installed the right way, the first time.

Our Water Heater Installation Process

We have refined our process over three decades to make it smooth, efficient, and worry-free for every customer.

Step 1: Consultation and Evaluation

We start by learning about your home, water usage, and preferences. Whether you have a growing family or want to improve energy efficiency, we will help you select the right system for your needs.

Step 2: Transparent Quote and Recommendations

You will receive a clear, detailed quote before any work begins. We take time to explain your options, including the pros and cons of gas, electric, or tankless systems.

Step 3: Professional Installation

Our uniformed plumbers arrive on time with all the necessary tools and materials to complete the job in one visit. We remove your old unit, install the new one according to code, and ensure every connection is tight and secure.

Step 4: Testing and Cleanup

After installation, we test the system to confirm it operates safely and efficiently. We also clean the workspace thoroughly so your home looks as good as it did before we arrived.

Step 5: Final Walkthrough and Warranty Information

We will show you how to operate your new water heater, share maintenance tips, and review warranty details for long-term peace of mind.

Water Heater Types We Install

Every home is different, and so is every water heating solution. Our team installs a full range of water heaters from top manufacturers to suit your comfort and budget.

Traditional Tank Water Heaters

These are the most common systems in homes today. Available in both gas and electric models, traditional water heaters store hot water in an insulated tank, ready whenever you need it. They are dependable, affordable, and ideal for consistent daily use.

Tankless Water Heaters

If you never want to run out of hot water again, a tankless water heater is a smart investment. These systems heat water only when needed, reducing energy use and providing an endless supply of hot water. Tankless units are compact, efficient, and can last up to 20 years with regular maintenance.

Hybrid (Heat Pump) Water Heaters

Hybrid systems use heat pump technology to draw warmth from the air, significantly reducing energy consumption. They combine modern efficiency with reliable hot water delivery, making them a great option for eco-conscious homeowners.

Commercial Water Heaters

Businesses need dependable hot water to run smoothly. From restaurants to apartment complexes, we install high-capacity commercial systems designed for durability and performance.

Signs It Is Time to Replace Your Water Heater

Not sure if it is time for a replacement? These warning signs can help you decide.

Fluctuating Water Temperature: Hot water that turns cold suddenly indicates a failing system.

Strange Noises: Rumbling or popping sounds often mean sediment buildup inside the tank.

Discolored or Rusty Water: Corrosion inside the tank can lead to rust in your water supply.

Leaks Around the Base: Even small leaks can cause serious water damage if left untreated.

Age Over 10 Years: Most standard water heaters last about a decade before losing efficiency.

If your system shows any of these symptoms, our team can inspect it and recommend whether repair or replacement makes the most sense.

Benefits of Installing a New Water Heater

A new water heater does more than restore comfort. It also adds value and efficiency to your home.

Improved Energy Efficiency: Modern systems use less energy and heat water faster.

Lower Utility Bills: Reduced energy usage translates into real monthly savings.

Reliable Hot Water Supply: Enjoy consistent temperature and performance.

Peace of Mind: Every installation includes strong warranty coverage and quality assurance.

Increased Home Value: A new water heater adds long-term reliability for future buyers.

With Castlewood Plumbing, you receive expert installation backed by decades of experience and a satisfaction guarantee.

Routine Maintenance for Long-Term Reliability

Your water heater works hard every day. Regular maintenance helps it last longer and prevents costly breakdowns.

As a Round Table Membership customer, you will enjoy exclusive benefits such as:

Annual inspections

Priority scheduling

Discounted repairs and installations

10% off all plumbing services

Routine maintenance includes flushing the tank, checking pressure valves, inspecting connections, and ensuring your system runs safely and efficiently. Join the Round Table Membership to protect your investment and save money over time.

Emergency Water Heater Services

Hot water problems never happen at a convenient time. That is why Castlewood Plumbing offers 24/7 emergency water heater repair and installation services.


If your unit bursts, leaks, or stops working altogether, our emergency team will respond quickly with fully stocked service vehicles. We diagnose the issue, provide honest solutions, and restore your hot water as soon as possible.



Call (636) 394-6737 any time, day or night, for immediate help.

Service Areas We Serve

Castlewood Plumbing proudly provides expert water heater installation and plumbing services across West St. Louis County, including:

Ballwin, Chesterfield, Cottleville, Creve Coeur, Defiance, Des Peres, Ellisville, Eureka, Fenton, Kirkwood, Manchester, Maryland Heights, Pacific, St. Albans, St. Clair, Sunset Hills, Town and Country, Union, Valley Park, Weldon Springs, and Wildwood.



Whether you are in the region or elsewhere, our trusted team of plumbers is ready to deliver quality workmanship and exceptional customer care.

Frequently Asked Questions

  • How long does it take to install a new water heater?

    Most installations are completed within two to four hours, depending on the model and setup. Our plumbers arrive prepared to finish the job efficiently so you can enjoy hot water the same day.

  • Do you install both gas and electric water heaters?

    Yes. We install, replace, and service both gas and electric water heaters from top brands. We can help you decide which type is the best fit for your home and energy needs.

  • Can I switch to a tankless water heater?

    Absolutely. Many homeowners are upgrading to tankless systems for their energy efficiency and endless hot water supply. We will assess your plumbing and electrical setup to ensure a smooth transition.

  • What is the lifespan of a water heater?

    Traditional tank systems typically last 8 to 12 years, while tankless units can last up to 20 years with proper maintenance. Regular service helps extend lifespan and efficiency.

  • Do you offer financing for water heater installation?

    Yes. Castlewood Plumbing provides flexible financing options to make your new water heater affordable and stress-free. Ask about our financing plans when scheduling your appointment.

Schedule Your Water Heater Installation Today

If your water heater is outdated, inefficient, or beyond repair, do not wait until it fails completely. Let the professionals at Castlewood Plumbing install a new, energy-efficient system that delivers comfort and reliability every day.


Our friendly technicians will guide you through every step, from selecting the right model to ensuring flawless installation. We guarantee high-quality service, honest pricing, and results you can depend on.



Call (636) 394-6737 or request an appointment online to schedule your water heater installation in Wildwood, MO. When you need comfort restored quickly, Call the Knight to Fix It Right.