Gas Water Heater Replacement in Longmont, CO
When your gas water heater fails in Longmont, CO, count on GFR Plumbing for prompt and professional replacement.
- Trusted Brands
- Old Heater Haul-Away Included
- Expert Technicians
- Locally Owned Business
New Gas Water Heater, Installed and Tested in Longmont, CO.
We stock popular tank sizes on our trucks, so you are not waiting days for parts.
Your Go-To for Gas Water Heater Replacement in Longmont, CO
GFR Plumbing sizes each gas water heater to your household, whether that is a 40 gallon tank for a couple or a 75 gallon tank for a big family. We check draft, gas pressure and the expansion tank so the new heater runs safely and holds up.
Our expertise includes:
- Atmospheric, power vent and direct vent gas tank installs
- Licensed and Insured Gas Water Heater Experts
- Installation of all major gas water heater brands.

Additional Plumbing Replacement Services in Longmont, CO
When repairs are no longer enough, our replacement services in Longmont, CO deliver modern, efficient equipment installed right.

Customers
Why Choose GFR Plumbing for Gas Water Heater Replacement in Longmont, CO?
Around Longmont, a yearly water heater flush helps clear the sediment that collects at the bottom of the tank. Sediment that settles in the bottom of gas tanks overheats the steel and cuts tank life. We set up each new heater so sediment can be flushed and the anode rod can be checked.
- Energy Efficiency, We help you choose modern gas water heaters that can lower your energy bills compared to older models.
- Upfront Pricing, You get a flat installed price that covers the tank, parts, permit and removal of the old unit.
- Safety First, Gas appliances require careful handling, and our technicians are thoroughly trained in all safety protocols and code requirements for gas water heater installation.
Citywide Coverage
GFR Plumbing serves every neighborhood in Longmont for gas water heater replacement. Whether you are in an older part of town or a newer development, our team is equipped to reach you quickly.
Experienced Team
Our plumbers replace gas water heaters every week and know the venting and gas piping details that trip up less experienced installers. They spot failing gas valves, back-drafting flues and missing expansion tanks quickly.
Safety-First Approach
Safety is paramount in every gas water heater replacement we take on, from the initial inspection to the final start-up. We closely follow all local and national gas codes to protect your home and family from potential hazards.
Trusted Certified Longmont Plumbing Services Professionals
At GFR Plumbing, we take pride in providing licensed, certified plumbing services throughout Longmont, CO. Backed by recognized industry credentials, our experienced plumbers combine technical skill with genuine customer care. Whether it is repair, installation, or maintenance, we follow strict safety and quality standards to deliver lasting results you can trust.
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PHCC Plumbing Contractor Recognition
Better Business Bureau (BBB) Accreditation
Angi Certified Pro
ISO 9001 Quality Management CertificationReliable Gas Water Heater Replacement Services in Longmont, CO
Standard Gas Water Heater Replacement in Longmont
Most homes in Longmont rely on a conventional tank-style gas water heater. We expertly remove your old unit, inspect the existing gas and water lines, and install a new, energy-efficient model. Our service includes proper venting setup and ensuring all connections are leak-free and secure. We work with various tank sizes to match your household's hot water demand, optimizing efficiency and longevity in your local climate.

Rheem and A.O. Smith Gas Water Heater Replacement in Longmont, CO
We proudly install and replace Rheem and A.O. Smith gas water heaters throughout Longmont, CO. These brands are industry leaders, offering a wide selection of efficient and long-lasting models. Our technicians are factory-trained on the latest technologies from Rheem and A.O. Smith. That means a proper setup that maximizes your new water heater's performance and lifespan.
40 and 50 Gallon Tank Replacement in Longmont
The 40 and 50 gallon gas tank is the workhorse of most Colorado homes. When yours starts leaking from the bottom seam or produces rusty water, replacement is the only real fix. We match the new tank's height and diameter to your space and reuse the venting when it is in good shape. Newer tanks are sometimes taller due to efficiency standards, so we check clearance before ordering. Most of these jobs take about two to three hours.
A. O. Smith Gas Water Heater Services in Longmont
GFR Plumbing provides expert installation and replacement of A. O. Smith gas water heaters throughout Longmont. A. O. Smith is a reputable brand known for innovative features and robust construction. We handle all aspects of the replacement, including correct sizing, gas line connections and exhaust venting. Our goal is to provide you with a long-lasting, efficient hot water solution matched to your home.
Large Capacity 75 Gallon Gas Heaters in Longmont, CO
Big families, soaking tubs and multiple showers running at once often need a 75 gallon tank or a high-recovery 50 gallon model. These heaters use larger burners, sometimes 75,000 BTU, and may need a bigger gas line and flue. We check your meter and pipe size to make sure the larger tank gets the gas it needs. A high-recovery unit can be a good middle ground when space is tight. We walk you through recovery rates so you pick the right fit.
Power Vent Gas Water Heater Installation in Longmont, CO
For homes in Longmont, CO where traditional venting is not possible, or for those seeking higher efficiency, power vent gas water heaters are an excellent choice. These units use a powered fan to exhaust combustion gases, offering more flexibility in installation location. Our technicians are experienced in installing these more complex systems. That includes running new PVC vent piping and making proper electrical connections for the blower motor, all while following local codes.
Emergency Gas Water Heater Replacement in Longmont, CO
A sudden water heater failure can be a major disruption. GFR Plumbing offers emergency gas water heater replacement services across Longmont, CO to get your hot water back fast. Whether it is a major leak, a pilot light issue or a complete breakdown, our team is ready to respond. We focus on rapid diagnosis and efficient replacement to minimize your downtime and discomfort.

Bradford White Gas Water Heater Installation in Longmont
GFR Plumbing is a experienced installer of Bradford White gas water heaters in Longmont. Known for their durability and American-made quality, Bradford White units are a popular choice for many Colorado homeowners. We ensure proper sizing and installation according to manufacturer specifications, maximizing the lifespan and efficiency of your new unit. Our technicians are familiar with their venting and gas connection requirements.
Gas Water Heater Replacement Near Me in Longmont, CO
Looking for gas water heater replacement near me usually means you have no hot water and need help fast. GFR Plumbing serves Longmont with plumbers who keep popular tank sizes on the truck. That lets us finish most replacements on the first visit.
Our team is always ready to respond to your gas water heater needs across Longmont, so you do not have to wait long for hot water. With a focus on fast service and quality workmanship, we are the smart choice for residents seeking trusted plumbing professionals nearby.
GFR Plumbing at a Glance
- Fully licensed plumbing team covering Longmont, CO
- 24/7 emergency service with same-day scheduling
- Upfront, flat-rate pricing before work begins
- 4.8-star rated by 750+ Colorado customers
Longmont Map
Longmont Information
- Population
- 98,630
- Area codes
- 303/720/970
- Service area
- Longmont and communities within 40 miles
- Nearby
- Lafayette, Boulder, Broomfield, Loveland
Dry air, intense sun, and big daily temperature swings put steady stress on pipes, fittings, and outdoor plumbing in Colorado. Garage water heaters in Longmont, CO also collect sediment over time, so a properly vented and flushed gas tank replacement protects both safety and tank life.
Expert Services
Trust our professionals for reliable GFR Plumbing solutions in Longmont, CO.
Our Specialized Plumbing Services in Longmont, CO
At GFR Plumbing, we provide a complete range of plumbing services across Longmont, CO. From leak detection to full system installations, our team ensures fast, precise, and affordable service for both residential and commercial properties. Explore our core services below:
How Our Gas Water Heater Replacement Service Works in Longmont, CO
Here is what to expect from the first call to hot water at the tap.
Request a Quote
Contact GFR Plumbing today at (720) 727-9398 to schedule a consultation. We will discuss your hot water needs and provide an honest, upfront estimate for your gas water heater replacement.
On-Site Assessment
Our technician will visit your home to assess your current water heater, evaluate your existing gas and venting lines and confirm the best replacement options.
Professional Installation
We safely remove your old unit, install the new gas water heater, connect all gas and water lines, set up the venting and perform thorough safety checks.
Frequently Asked Questions About Gas Water Heater Replacement in Longmont
The cost for gas water heater replacement in Longmont, CO usually ranges from $1,200 to $3,000, including the unit and installation. This can vary based on the model, capacity and any necessary changes to gas lines or venting. We provide a written, upfront quote after assessing your needs.
Tankless can make sense if you want endless hot water and plan to stay long term, but upfront costs are higher. We can price both options so you can weigh them side by side.
If your home has a pressure regulator or backflow device, heated water has nowhere to expand. An expansion tank absorbs that pressure and protects the heater and fixtures.
Atmospheric vent water heaters use natural convection to vent combustion gases up a chimney or flue. Power vent models use an electric fan to force gases out, allowing for more flexible venting options and often higher efficiency due to more complete combustion.
Replacing a gas water heater involves working with gas lines, water connections and venting, which can be dangerous if not done correctly. It is strongly recommended to hire a licensed professional like GFR Plumbing for safety and code compliance.
It is risky. Gas leaks, poor venting and incorrect relief valve installation can create fire and carbon monoxide hazards. A licensed plumber also handles permits and inspection.
Absolutely. Many modern gas water heaters, including some tank-style and all tankless models, are designed for higher energy efficiency. We can go over Energy Star rated options that can save you money on utility bills in Longmont, CO.
A typical gas water heater has a lifespan of 10 to 12 years with proper maintenance. Factors like water quality in Longmont, such as hard water causing mineral buildup, and usage patterns can influence its longevity.
What People Are Saying About Our Plumbing Experts?

Daniel K.
A pipe burst at 11 pm and they actually answered. The plumber showed up within the hour, shut everything down, and had us back to normal the next morning. Could not ask for more.
Emergency Plumbing · Longmont, CO
Patricia H.
We had a slab leak that two other companies could not find. GFR Plumbing located it in under an hour, explained our options, and the price matched the quote to the dollar.
Slab Leak Repair · Boulder, CO
James P.
Our commercial plumbing system had a leak under the sink, and GFR Plumbing handled it professionally. The plumbers arrived quickly and restored everything without disruption to our customers.
Commercial Plumbing · Boulder, CO
Robert G.
The trenchless sewer replacement saved our front yard. They walked us through the camera inspection footage first so we knew exactly what we were paying for.
Sewer Line Replacement · Broomfield, CO
Laura S.
I scheduled a water heater replacement, and the team made the process smooth and affordable. The new unit works perfectly, and they cleaned up after completing the job.
Water Heater Replacement · Longmont, CO
Mark T.
When our office needed drain cleaning, GFR Plumbing provided quick, reliable service. The plumber arrived on time and made sure every drain flowed perfectly before leaving. Very satisfied.
Drain Cleaning · Longmont, CO













