Water Heater Service & Installation in Castle Rock, CO

July 7, 2025

A water heater doesn’t get much attention until it stops working and everything falls apart. No hot showers, dishes piling up, and laundry delayed.


Water heater service & installation in Castle Rock, CO, service covers both new water heater installation and existing system maintenance. Whether you’re moving into a new home or replacing an old unit, professionals will assess your water needs, recommend the right size, and handle everything from removal to hookup.


But it’s not a one-time job—routine maintenance is key. Once a year is a good baseline for maintenance, especially before the cold seasons hit. And between visits, simple steps like checking the temperature setting and occasionally draining a few gallons to flush sediment can help extend the life of your system. But having a licensed expert do a full inspection is crucial. And in some cases, especially with gas units or major upgrades, permits may be required. Contractors familiar with local codes can navigate this for you without the hassle.


So whether your unit is due for a tune up or you’re planning a full install, water heater service & installation keeps your home running smoothly, without the cold shocks.


At 303 Heating & Air, Inc, we take great pride in being one of the top-rated water heater service and installation providers in Castle Rock, CO. Whether you need a brand-new installation or a fast, effective repair, we’re committed to delivering results that stand the test of time.

About - Castle Rock, CO

Castle Rock is the county seat and most populated town in Douglas County, with 81,415 residents according to 2023 estimates. This home rule town sits at 6,224 feet elevation, 26 miles south of Denver along the I-25 corridor.

Castle Rock’s history comes alive through multiple venues, especially the Castle Rock Historical Society and Museum. Housed in the original 1875 Denver & Rio Grande Railroad depot. This beautifully restored facility shows the town’s transformation from a small settlement to a thriving town.

The depot itself, made of native rhyolite stone and listed on the National Register of Historic Places in 1974, is the museum’s main artifact.


Adventure seekers can experience The EDGE Ziplines & Adventures at Philip S. Miller Park, with 10 zip lines over 2 miles long. The park also has sky trek courses, ninja warrior challenges, and many hiking trails for outdoor enthusiasts.

Happy Customers in Castle Rock, CO

We live in a rental home that was having multiple issues with carbon monoxide and gas. Tom did a fantastic job replacing our furnace and was extremely thorough and found additional issues that other technicians had overlooked. Highly recommended!!!

Ally H.

Had Tom replace our AC and furnace. He did an excellent job and was done in less than a day. He communicated very well and delivered exactly what he promised. We are extremely satisfied and recommend him without hesitation. Thank You from the Carltons

Stephanie C.

We had an excellent experience for our furnace installation with Tom. He was incredibly knowledgeable and professional. It is clear that he takes pride in his work. We would highly recommend him and his company!

Tim W.

Great service, Tom was on time and his estimate beat others by hundreds. I will be refereaing close friends and family! Thank you!

Danny

Tom was amazing. Honest, fast, and did the work with excellence. Great prices and a great guy. Call Tom before you have one of the "big guys" come and charge you way too much.

Gerry O.

Highly recommend! Tom installed a new furnace and water heater at my house. Fair prices, excellent service, efficient.

Rachel R.

Our Services in Castle Rock, CO

Top-Rated Water Heater Service & Installation in Castle Rock, CO

With over 21 years in the HVAC business, 303 Heating & Air, Inc Inc. knows how important a water heater is to your daily comfort. Our owner-operated approach means every job gets personal attention and detail.


We stay current with the latest technology so you get modern, energy-efficient water heaters that can help reduce your utility bills. Our technicians are highly skilled, licensed, and insured, and can handle everything from routine maintenance to 24/7 emergency repairs.


Our reputation for great customer service is built on fast response times and a genuine commitment to your satisfaction. In fact, many of our customers appreciate our willingness to listen and customize solutions to their specific needs, as shown in our testimonials.

Trust 303 Heating & Air, Inc for comfort, safety, and peace of mind.


Get in touch!

Person in red work clothes, inspecting a heat pump outdoors.

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