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Longmont Water Heaters

Tankless or Tanked Options

We provide fast and reliable water heaters when you need them.  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.


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 amout of water that will continue to leak.

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

I need a new water heater. Where do I start?

Right here, good job, you already did that part.

What is the best water heater I can get?

I usually end up installing the modern equivilant of whatever you have now. Switching to a different style, like tank to tankless is a big step up in COST. But I am happy to talk about your options. Shoot me a call at 970-389-2285

What are the 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

How long will 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.


115 - 5 star Reviews

I am so pleased with the service I got from Longmont water heaters On my tankless hot water heater. They worked through the issue and came back several times to make sure everything was in working order. I would highly recommend them.

- Cathy F. - 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 did a great job. He was very cost competitive, on time and very clean with his work area. He removed and re-installed two heaters and reconfigured them from series to parallel flow. He gave great suggestions on the entire set-up. I have no...

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

Mike is efficient and knowledgeable. I trust him and recommend to everyone I know!

- Margaret H. - 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