Get Your Hot Water Back — Fast.

Highlands Ranch master plumbers install and replace water heaters with upfront pricing — so you know the cost before we start. No surprises. No overtime charges.

  • Upfront pricing — you approve the cost first
  • Bradford White water heaters — American-made, pro-grade
  • Financing available for unexpected replacements

YOUR NEIGHBORS – NOT A FRANCHISE

We Know How Stressful a Water Heater Emergency Is

When Mark and Liz Friesen started Southside Plumbing in 2005, they made a promise: treat every customer like family, give honest advice, and always share the price upfront — whether you need a quick water heater tune-up or a full tank replacement at midnight. Twenty years later, that’s still how we operate.

Our team of 5 master plumbers and a journeyman know water heaters inside and out, and they live right here in the neighborhoods we serve. We’re not a national franchise — we’re the people you see at the grocery store. The ones who’ll make sure you never wake up to a cold shower again.

850+ Google Reviews

Serving South Metro Denver

Family Operated

Insured

WATER HEATER TYPES

Which Water Heater Is Right for Your Home?

Not all water heaters are the same. The right choice depends on your home’s venting configuration, space, hot water demand, and budget. Southside Plumbing installs Bradford White water heaters — an American-made brand trusted by professional plumbers for its quality, reliability, and industry-leading warranty support. Here’s an overview of the four main types of gas water heaters we install.

Atmospheric

(Classic)

The traditional gas water heater. Uses natural draft — hot exhaust rises through a vertical metal flue and out your roof. The most affordable option and found in the majority of Colorado homes. Best for homes with an existing vertical vent through the roof.

Power Direct Vent

(2-Pipe)

Uses a motorized blower and two PVC pipes — one draws combustion air from outside, the other exhausts it out. This sealed combustion design is more energy efficient and ideal for installations in confined spaces, since it doesn’t pull air from inside the home.

Power Vent

(1-Pipe)

Uses a motorized blower with a single PVC exhaust pipe that can vent horizontally through a sidewall — no roof penetration needed. Draws combustion air from the room. A great option when vertical venting isn’t available or practical.

Tankless

(On-Demand)

Heats water on demand — no storage tank. Provides continuous hot water and takes up far less space. Higher upfront cost, but offers long-term energy savings and a longer lifespan (20+ years). Requires adequate gas line sizing and proper venting.

HOW IT WORKS

Three Steps to Reliable Hot Water

We make the process simple, transparent, and stress-free.

Call or Schedule Online

Tell us what’s going on. We’ll ask a few quick questions and get you on the schedule — often the same day.

Get Your Upfront Price

A master plumber diagnoses the issue and gives you an exact price before any work begins. No hourly rates, no hidden fees.

Options if Needed

If the camera reveals a bigger issue, we walk you through your options with honest, upfront pricing. No pressure — ever.

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4.9
Based on 875 reviews
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lanie D. profile picture
lanie D.
18:12 22 Mar 26
Mike quickly got to the problem and started work. He explained ever thoroughly and was fair and honest when discussing choices and costs. We will definitely be requesting Mime's services in the future.
Robert B. profile picture
Robert B.
15:23 22 Mar 26
Excellent work. Prompt and reliable
Marsha S. profile picture
Marsha S.
19:49 19 Mar 26
I highly recommend Southside Plumbing. They are so professional and experts at what they do. Trevor was amazing to work with and fixed many plumbing issues that we had. His attention to every detail was amazing. I am so glad I found them and I will use them again in the future.
Brian W. profile picture
Brian W.
18:41 19 Mar 26
UPDATE 3/26: I needed the hose bibs (faucets) on the outside of my house replaced. Called Southside again and they were out in 2 days…Kyle and Adam had both bibs replaced and working again in less than 2 hours for a fair price. I will continue using Southside for all my plumbing issues!

I've needed Southside three times in the past two years...for a new water heater (they had the best price), a new shut off valve for my sprinklers, and most recently to fix a phantom noise in one of my toilets. After nearly three hours of troubleshooting, Kyle was able to find a small plastic/ceramic thing was stuck in the water line and remove it. Problem solved. Would use these guys again in a heartbeat.
Jim F. profile picture
Jim F.
23:22 16 Mar 26
They provided outstanding service, professional and friendly.
Gregory D. profile picture
Gregory D.
21:09 16 Mar 26
Trevor and Zach were so friendly, patient and transparent about everything they did to help us with our gas leak situation. Safety was their priority and we appreciate them going the extra mile, even returning to our house when Xcel showed up and had questions about what was done. Thank you so much guys!
John R. profile picture
John R.
17:48 10 Mar 26
Adam and Kyle were great! They worked to identify the problem, gave a clear estimate at a reasonable price, and completed the work expertly. Southside was also easy and professional to deal with. Highly recommend this company in the Denver metro area!
Jake L. profile picture
Jake L.
23:39 09 Mar 26
Michael, Gabriel and Micha did a great job. We’re able to diagnose the problem quickly and get it taken care of. Communicated well throughout the entire process. Was glad to have the option to have them come on a weekend, even though I didn’t use that option. Were able to come the next business day, which is very much appreciated.
Josh F. profile picture
Josh F.
20:12 27 Feb 26
Mark was great! Easy to set up the appointment, Mark arrived in the window I was given and took care of everything in my concern. I will use Southside in the future!
Steve I. profile picture
Steve I.
21:27 25 Feb 26
Chris and Southside went above and beyond to source the necessary piece for repair and then ensured the job was done quickly and fully.
Michelle T. profile picture
Michelle T.
14:05 24 Feb 26
The Southside team was great. We discovered a leak under our kitchen sink leading to the dishwasher and Southside was able to fit us in same day. Trevor was great. After having some issues in the past with, less than qualified, techs we’d just find online…I would recommend the Southside team if you want it fixed right.
David W. profile picture
David W.
02:33 10 Feb 26
Trevor and Gabriel were very quick in answering our request on having our toilets. After examining all three of them, we were advised that they could be repaired but replacement was the better option . After Trevor patiently answered all our questions, we agreed and Heather called us later to make our appointment. Trevor and Adam came out on time and were very professional in their demeanors and finished the installations very effectively. There was no mess left and they carted off the old toilets. We are very happy with the work they performed. And we especially like the soft close lids and seats. We would highly recommend Southside Plumbing.
Charley H. profile picture
Charley H.
22:58 06 Feb 26
Mike was right on time for our service call. Very thorough and efficient. Kept a clean and organized work area. Kept us informed as he worked to solve our somewhat complicated plumbing problem. He was friendly and respectful in all of our conversations. We will definitely request Mike if we have any future plumbing problems.
Walt J. profile picture
Walt J.
20:36 24 Jan 26
We have used Southside Plumbing in the past with very good results. This experience was just as good if not better. We had a toilet replaced. Chris was very knowledgeable, honest, professional and efficient. He informed us of the different options and did a great job installing the toilet. We felt like we were in very good hands and would definitely use Chris and Southside Plumbing for future repairs and projects.
Tricia S. profile picture
Tricia S.
00:11 22 Jan 26
Southside plumbing has over the years proven to be the most reliable, professional experts who treated us with incredible care. Trevor, Adam, and Gabriel were absolutely fantastic. They brought our stress level down and our confidence level up. So grateful for this company. Heather took fantastic care and got us scheduled in minutes. From beginning to end this experience was seamless and felt like family!! Thank you
Mike C profile picture
Mike C
22:54 19 Jan 26
Really professional, Mike was awesome. He did a great job. He gave me his honest opinion of what he thought the problem was and he was bag on. They also offered us a 20$ off promotion discount if we donated food for the food bank. Clever marketing and it’s always nice to work with a company that wants to give back to the community. Will def be using them again next time we need plumbing services.
Mark H. profile picture
Mark H.
17:43 28 Dec 25
I had a great experience with Southside Plumbing! It began with Mark assessing my failing tank water heater and providing me options to prolong its life and options for replacement.
My wife and I decided on moving forward with a new Navien tankless water heater and a Halo whole house water filtration system.
Mark, Adam, Trevor, and Isaiah performed with excellence to remove the old tank and install the new systems all within a day.
We have been enjoying the improved water quality and endless hot water with the new systems.
I highly recommend trusting Southside Plumbing with all of your plumbing needs!

Water Heater FAQs

A good rule of thumb is the 50% rule: if the repair cost exceeds 50% of a new water heater’s price, replacement is usually the smarter investment. You should also factor in the unit’s age — most tank water heaters last 8–12 years — and how frequently it has needed repairs. Our plumbers will give you an honest, no-pressure assessment of both options before any work begins.

Traditional tank water heaters typically last 8–12 years with proper maintenance. Tankless units can last 20 years or more. Factors like water quality, usage volume, and annual maintenance all affect lifespan. If your unit is over 10 years old and showing signs of trouble — rust-colored water, rumbling noises, or inconsistent heat — it’s worth having one of our master plumbers evaluate it.

Watch for inconsistent or insufficient hot water, rusty or discolored water, a rotten egg or metallic smell, rumbling or popping noises from the tank, visible corrosion or rust around the unit, water pooling near the base, or a significant spike in your energy bill. Any one of these is reason to call — caught early, many issues can be repaired rather than requiring a full replacement.

Tank water heaters have a lower upfront cost and are straightforward to maintain. Tankless units cost more to install but heat water on demand, use significantly less energy, and last nearly twice as long — making them the better long-term investment for many households. The right choice depends on your household size, hot water demand, and budget. We’ll walk you through both options honestly and help you decide what makes sense for your home.

Yes — flushing your tank water heater once a year removes sediment that builds up at the bottom of the tank, which can reduce efficiency, cause rumbling noises, and shorten the unit’s lifespan. Highlands Ranch has moderately hard water, which makes regular maintenance especially worthwhile. Our team can handle this as part of a plumbing maintenance visit.

Don’t Spend Another Day Without Hot Water

Schedule with Southside Plumbing today.