30 Years of Denver Plumbing — Father, Son, and Zero Shortcuts

Jim Unger is a master plumber with 30 years of Denver experience. His son Nick is the lead tech. Together, they show up on time, price it fairly, and fix it right — from gas line installs to full bathroom remodels.

4.5★
Yelp Rating
From 22 Verified Reviews
30+
Years in Business
Serving Denver Since 1994
Gas Lines
Specialization
Installation, Repair & Inspection
Colorado Plumbing & Gas Lines
Our work
Our work 24/7

A Denver Plumbing Company Built on Family, Skill, and 30 Years of Trust

In 1994, Jim Unger started Colorado Plumbing & Gas Lines as a mom-and-pop operation. The idea was simple: be the kind of plumber that neighbors recommend — show up when you say you will, charge what's fair, and never cut corners on a gas line.

Three decades later, Jim's son Nick works alongside him as lead technician. Maggie keeps the operation running. It's still the same family, the same values, and the same commitment to doing the work right.

Customers on Yelp say it plainly: Jim shows up on time, explains what's needed, and doesn't pad the bill. Whether it's a bathroom remodel, a tankless water heater installation, a new gas line for a stove or fire pit, or a complex gas line repair — the Unger family handles it with the expertise of a 30-year master plumber and the accountability of people who stake their reputation on every job.
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Denver's Gas Line and Plumbing Specialists — One Family, Full Scope

Gas Line Installation & Repair
Specialization

Gas Line Installation & Repair

Gas lines require a master plumber — not a generalist. Jim Unger has been installing and repairing gas lines in Denver homes for 30 years. Stoves, fire pits, outdoor kitchens, new construction, and emergency gas line repairs done to code, every time.

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Tankless Water Heater Installation
Repair & Install

Tankless Water Heater Installation

Upgrade to endless hot water. We install and configure tankless water heater systems for Denver-area homes — proper sizing, correct gas line capacity, and clean installation that lasts.

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Bathroom Plumbing & Remodels
Remodel

Bathroom Plumbing & Remodels

Planning a bathroom remodel in Littleton, Highlands Ranch, or anywhere in the Denver Metro? We handle the plumbing rough-in and finish work — coordinated around your contractor schedule, completed without surprises.

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Plumbing Professionals

Jim Unger

Jim Unger

Master Plumber & Founder

Nick Unger

Nick Unger

Lead Technician

Maggie Unger

Maggie Unger

Operations

Need a Gas Line or Plumbing Work Done Right? Call the Masters.

30 years of Denver expertise. Master plumber licensed. Free estimates on all major projects.

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Denver's Gas Line and Plumbing Specialists — One Family, Full Scope

Most plumbers will touch a gas line. Jim Unger has been mastering them for 30 years. Colorado Plumbing & Gas Lines serves the full Denver Metro — from complex gas line installs to bathroom remodels to tankless water heater upgrades — with the experience, licensing, and accountability of a family business that has never had to chase its reputation.

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Gas Lines — Installation & Repair

Gas Lines — Installation & Repair

Tankless Water Heater Systems

Tankless Water Heater Systems

Full Plumbing Service

Full Plumbing Service

Reviewer
Reviewer
Reviewer
Reviewer
Chris H.
"Jim showed up exactly when he said he would — which almost never happens with contractors. He explained everything before starting, and the gas line install was clean, permitted, and inspected. Exactly right."
★★★★★

Before And After

Before
After
Before
After

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Denver Metro — Littleton, Parker, Highlands Ranch, Centennial, Lone Tree, Aurora, Englewood