Never Run Out of Hot Water Again.
Upgrade to a Navien tankless water heater — installed by master plumbers with upfront pricing. Endless hot water, lower energy bills, a unit that lasts twice as long.
- 24–34% Energy Savings
20+ Year Lifespan
Infinite Hot Water

CERTIFIED NAVIEN PARTNER
We’re the Tankless Experts Your Neighbors Trust
Southside Plumbing is a certified Navien partner. Every tankless installation is designed and overseen by a master plumber who makes sure the unit is a good match for your water usage.
- Built-in recirculation — instant hot water
- Up to 0.97 UEF efficiency
- Dual stainless steel heat exchangers
- Wall-mounted, compact design

850+ Google Reviews
Serving South Metro Denver
Family Operated
Insured
THE TANKLESS ADVANTAGE
What a Tankless Water Heater Gives You
Never run out of hot water again.
SIDE BY SIDE COMPARISON
Tankless vs. Traditional Tank
| Feature | Traditional Tank | Tankless |
|---|---|---|
| Hot Water | Limited (40–50 gal) | Unlimited |
| Lifespan | 8-12 years | 20-25 years |
| Efficiency | 0.58–0.67 UEF | Up to 0.97 UEF |
| Recirculation | External pump | Built-In Pump |

Cindy A.
4 weeks ago
Southside Plumbing is the best. It was an amazing experience working with them on a recent plumbing issue. A huge shout out to Mike Y. Who provided us service that was above and beyond. Highly recommend!

Linda B.
4 weeks ago
Adam arrived early, clearly explained the problem and made the repair.

PM S.
1 month ago
Southside Plumbing is great and Mike is fantastic. Really nice person and a very good plumber. He works quickly and efficiently. I highly recommend both Mike and Southside Plumbing

Alan B.
1 month ago
Excellent work. Expensive still, but one third of cost that a competitor proposed.

lanie D.
3 months ago
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.
3 months ago
Excellent work. Prompt and reliable

Marsha S.
3 months ago
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.
3 months ago
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.
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.
3 months ago
They provided outstanding service, professional and friendly.

Gregory D.
3 months ago
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.
3 months ago
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.
3 months ago
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.
4 months ago
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.
4 months ago
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.
4 months ago
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.
4 months ago
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.
4 months ago
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.
5 months ago
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.
5 months ago
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
5 months ago
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.
6 months ago
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!
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!
