Question 1

Is same day repair an option?

Accepted Answer

Yes, in most cases, same-day service is available. Once we complete a proper evaluation of the issue, Nxt Gen Plumbing will communicate with you about the repair status and keep you informed throughout the process. For special orders please allow 2 -3 week lead times depending on product. We will keep you updated on lead times prior installation.

Question 2

Does Nxt Gen Plumbing offer a warranty on work?

Accepted Answer

Yes, Nxt Gen Plumbing stands behind our work with some of the best warranties in the industry.
We offer a 2-year warranty on residential plumbing services and a 1-year warranty for commercial projects.

For specific products like Rinnai tankless water heaters, we provide industry-leading coverage:
5 years labor, 5 years parts, and 15 years on the heat exchanger, matching Rinnai's manufacturer warranty.

Additional warranty options and extensions may be available depending on the products installed.

Question 3

Water Heater Leaking? Stop the Damage Fast!

Accepted Answer

A leaking water heater can cause significant damage, but you can act quickly to minimize it. Here's what to do first:

Shut Off the Water Supply: Find the water shut-off valve for your water heater. It'll be a handle near the top or bottom of the unit, usually a ball valve (lever handle), gate valve (round handle), or globe valve (similar to a gate valve but often with a slightly different body shape). Turn it clockwise until it's completely closed to stop water flow to the unit.

Turn Off the Gas (if applicable): For gas water heaters, locate the yellow gas shut-off valve on the gas line leading to the unit. Turn the handle perpendicular to the pipe to shut off the gas.

Drain the Tank: Connect a garden hose to the drain valve located near the bottom of the water heater. Run the other end of the hose to a nearby floor drain or outside to safely drain the water from the tank.

Next, Call the Pros!
Once you've stopped the leak and drained the tank, call Nxt Gen Plumbing, your Longmont water heater professionals, at 720-910-4195. We'll get you on our schedule right away.

When we arrive, we'll thoroughly assess the situation and provide you with clear options to either repair or replace your water heater.

Question 4

Which is better, a tank or tankless water heater?

Accepted Answer

There's no single "better" option; it really depends on your home's needs, your preferences, and specific factors like your location. An expert plumber can help determine the best fit for you.

Question 5

How does my location affect tankless water heater performance?

Accepted Answer

Location, especially elevation and incoming water temperature, significantly impacts tankless water heater sizing and performance. For example, in Colorado, at 5,280 feet above sea level, the thinner air means less oxygen for combustion.

Question 6

What is "BTU derating" and why does it matter in Colorado?

Accepted Answer

BTU derating is the reduction of a natural gas appliance's effective heating capacity due to high altitude. In Colorado, for every 1,000 feet above 2,000 feet, you lose about 4% of accessible BTUs. This means a tankless unit rated for 11 GPM at sea level might only produce around 4.4 GPM in Colorado.

Question 7

How many tankless units do I need for my home?

Accepted Answer

That depends on your household's hot water demand. While a single tankless unit might suffice for homes with up to three bathrooms, larger homes or those with higher demands may require two tankless units or a specialized system design to ensure adequate hot water supply.

Question 8

Is an electric tankless water heater a good option in Colorado?

Accepted Answer

Short answer: no. Electric tankless units are typically designed for point-of-use applications. In warmer, lower-elevation areas like Arizona, they might work for small homes. But in Colorado, the temperature rise required (Delta T) is about 80°F during winter, which is too much for these units to handle efficiently.

They can be used for limited applications like a wet bar or a small commercial bathroom sink—but not for whole-home use in our climate.

Here in Colorado, professional licensed plumbers usually install high-efficiency natural gas units, typically 199,999 BTU or at least 160,000 BTU for a small studio. If you're looking for reliable performance in Colorado, stick with a high-efficiency natural gas water heater.

Question 9

What size gas line is required for a tankless water heater in Colorado?

Accepted Answer

Gas line sizing for a tankless water heater can be complex—there are multiple factors at play.
 In Colorado, a common standard we follow is to run a 1" natural gas line and reduce it to 3/4" within 5 feet of the unit. We typically use solid black iron piping due to its strength and reliability, plus it doesn't require grounding like corrugated CSST.
But sizing isn’t just about pipe diameter—length, pressure, and total demand on the system all matter. A licensed master plumber in Longmont (or anywhere in Colorado) should always perform a “longest run” gas load calculation to determine how many BTUs your current setup can support.
For example, a 1" gas line rated at 0.5 in. w.c. may handle around 257,000 BTUs at 60 feet—but once you factor in other appliances like your HVAC, fireplace, stove, or outdoor BBQ, your system may no longer meet the demand. That’s why a proper load calculation is critical.
Any qualified plumber should give you a detailed gas load report to show how your system stacks up. If they skip this step and just estimate, you risk poor performance and inconsistent hot water—especially in colder months.
Tankless water heaters are a proven, efficient solution—but only when installed correctly. That’s why working with a skilled, transparent plumber makes all the difference.
At Nxt Gen Plumbing, we’re here to help you make smart, informed decisions for your home. Call today to schedule your tankless water heater evaluation, and let’s make sure your system is sized for success.

Question 10

What does it take to install a tankless water heater?

Accepted Answer

Looking for a Longmont CO tankless water heater expert? Start with a licensed and insured master plumber.

When it comes to installing a tankless water heater in Longmont, it’s essential to hire a qualified Longmont plumber with experience in high-efficiency systems. At Nxt Gen Plumbing, we specialize in Rinnai and Navien tankless units, ensuring your system is properly sized, installed, and built to last.

From correctly sizing the gas line and unit to meeting the demands of your home’s plumbing system, every detail matters. A full installation includes:

A dedicated 120V electrical outlet
Proper condensate drainage and discharge methods
Safe and efficient venting, whether through dual PVC pipes or a concentric system (commonly used with Rinnai)
Setting parameter settings for tankless water heater

As a licensed plumbing contractor and insured master plumber in Longmont, we follow Colorado code and provide peace of mind that your system is installed right the first time. Many overlook these critical details—leading to underperformance, safety issues, or warranty voids.

When you need a Longmont plumber you can trust to install your tankless water heater, call Nxt Gen Plumbing. We're here to answer your questions, offer tailored solutions, and help you protect your most important investment—your home.

Question 11

What’s the average price of a tankless water heater installation in Longmont, Colorado?

Accepted Answer

The ultimate question: How much does a tankless water heater cost in Longmont, CO?

The short answer: depending on your specific needs, the price can range from $6,000 on the low end to $10,000 in a worst-case scenario. The key is having a professional plumber assess your home to determine exactly what’s required.

At Nxt Gen Plumbing, we make the process easy and affordable. We offer low-interest, fast financing through Wisetack, which takes less than 10 minutes to get you pre-qualified—right from our tablet or your phone, securely and conveniently.

We also price match competitors in Longmont, including companies like Longmont Tank Water Heaters and other qualified plumbing services, ensuring you get the best value without sacrificing quality.

As a dedicated, one-man LLC plumbing company serving Longmont, CO, Nxt Gen Plumbing is here for the long haul. We pride ourselves on delivering excellent craftsmanship, professional installations, and great value.

Call Nxt Gen Plumbing today to get your tankless water heater installed or serviced by a trusted Longmont plumber who cares about your home and your satisfaction.

Plumbing License
MP.03000994
7079 E 123rd Pl
Thornton, CO 80602

Frequently asked questions