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Niwot Water Heaters

Tankless or Tanked Options

If the water heater in your Niwot home is in need of repair or if the time has come to replace it. I will schedule an appointment at a time that is convenient for you. My dedication to prompt service means that you won't have to wait for hours and hours for our service technician to arrive.  Start your quote today!

Why Choose Us



A new water heater is a big purchase. Here at Longmont Water Heaters we chat about what you have, I look as some pics you take, and then I give you a price in advance so you know exactly what it will cost.



Longmont Water Heaters's focus is water heaters and water heaters only. Mike used to own and operate Greater Western Plumbing, but when that ended he wanted to hone in his focus to his specialty, WATER HEATERS!

Customer Service

Customer Service

At Longmont Water Heaters, all I do is water heaters in Longmont. It is my specialty and I do a lot of them. Give me a call at 970-389-2285 and lets talk about your water heater.


Do you service Niwot CO?

Yes I do venture out of Longmont (but not too far).  I provide the same timing and level of service to the Niwot community as I do with Longmont.

How much does it Cost?

There is a large variety in pricing and it is based on what you choose to get.  Generally your tankless are more expensive than the tanked options.  Usually my goal is to give you the modern equivalent of what you already have installed.  Give me a call and we can discuss options. Also we have a pricing calculator at the top of the page to give yourself an idea.

How long does this take?

I can typically do next day service if you are doing a "like for like" water heater swap.

The actual installation will usually take 2-6 hours depending on the tank water heater you choose.

For a tank to tankless swap it usually takes 1-2 days.

There is water all over my floor! Now What?

Most people don't swap thier water heaters until it is to late. Know that you are not alone.

1. Turn off the gas valve.

2. Unplug it if it has a plug in.

3. There should be a shut off valve above your water heater (usually on the right, cold inlet) close that. You have now limited the amount of water that will continue to leak.

4. Take a deep breath. You already made the right first step in coming here.

What are the different types of water heaters?

Listed from most common to least common:

1. Gas Tank - Atmospheric vent - That is the thin metal vent coming out of the top

2. Electric Tank - Wire coming out of the top

3. Power Direct Vent - 2 PVC pipes coming out of the top

4. Power Vent - a Fan on top and then a single pipe either PVC or metal coming out of the top

5. Gas Tankless - no tank, 1 or 2 pipes coming out of the top. For more info on whether a tankless is right for you, click here

6. Electric Tankless - we don't see to many of these around Longmont

7. Sidearm - A sidearm is a storage tank without a heating mechanism, so the water would get heated somewhere else like a boiler next to the sidearm


115 - 5 star Reviews

Mike did a fantastic job installing my tankless water heater. His expertise and attention to detail were evident throughout the process. He explained everything thoroughly, worked efficiently, and delivered excellent results. I really appreciated...

- Jeff N. - Another 5 Star Rating for Longmont Water Heaters

Mike replied immediately to my email inquiry and shifted the conversation to text with just as much responsiveness, providing me with advice on the best choice to replace my failed water heater. He was able to schedule me for a replacement the very...

- Eryc E. - Another 5 Star Rating for Longmont Water Heaters

Mike is the BEST!!!! He's super responsive, and knows his stuff! The turnaround from quote to install, was lightning fast, and he got us back to hot water so quickly. And on top of it, his honest and competitive pricing can't be beat!

- Sarah B. - Another 5 Star Rating for Longmont Water Heaters

I'm the manager at Scooter's Coffee in Longmont. Mike replaced our leaky water heater after several other businesses failed to get back to us. He worked quickly and efficiently, communication was great, and was friendly and helpful. Highly recommend...

- Christa S. - Another 5 Star Rating for Longmont Water Heaters

Water Heater Videos


Get in Touch:

We stay in constant communication with our customers until the job is done. To get a free quote, or if you have questions or special requests, just drop us a line.


  • M - Fri - 7:30am - 3:30pm  
  • Sat/ Sun - By Appointment