Tankless Water Heater Replacement in Fort Collins, CO
Switch to endless hot water with a new tankless water heater in Fort Collins, CO. GFR Plumbing provides professional replacement services.
- Quick Tankless Installation
- Expert, Licensed Plumbers
- Dependable Hot Water
- Isolation Valves Installed Standard
Stop Waiting on Lukewarm Showers. Upgrade Your Tankless in Fort Collins, CO.
Contact GFR Plumbing today for a free estimate on your tankless water heater replacement.
Reliable Tankless Water Heater Replacement for Fort Collins, CO Homes
GFR Plumbing specializes in professional tankless water heater replacement for homes across Fort Collins, CO. We understand that upgrading to a tankless system is a significant investment. Our goal is to provide a seamless installation that gets the most from your energy efficiency and hot water supply.
Our expertise includes:
- Correct venting and condensate drainage system setup.
- Expert removal and disposal of old water heaters.
- Condensing unit installs with PVC venting and condensate neutralizers

Additional Plumbing Replacement Services in Fort Collins, CO
When repairs are no longer enough, our replacement services in Fort Collins, CO deliver durable upgrades that restore full performance.

Customers
Why Choose GFR Plumbing for Tankless Water Heater Replacement in Fort Collins, CO?
Choosing the right professionals for tankless water heater replacement is essential for long-term satisfaction and efficiency. Our team makes sure your new system runs smoothly from day one, providing endless hot water.
- Energy Savings, Tankless water heaters only heat water when you need it, which can significantly reduce energy use compared to traditional tank models, a big plus for Colorado utility bills.
- Scale Protection, Every install includes isolation valves so the heat exchanger can be descaled without cutting pipe.
- Space Saving, Their compact design allows tankless units fit in smaller spaces, freeing up valuable room in your utility closet or garage.
Citywide Coverage
GFR Plumbing proudly serves every neighborhood and community within Fort Collins for all your tankless water heater replacement needs. Whether you are downtown or in the surrounding suburbs, our team is ready to deliver fast and professional service.
Experienced Team
Each technician at GFR Plumbing is a specialist in tankless technology, so your replacement is done accurately and efficiently. We focus on details like proper gas line sizing, venting and electrical connections for optimal performance and safety.
Safety-First Approach
We perform thorough safety checks after every tankless water heater replacement, including leak detection for gas lines and proper ventilation. You can rest assured your new system is safe and in line with Colorado regulations.
Trusted Certified Fort Collins Plumbing Services Professionals
At GFR Plumbing, we take pride in providing licensed, certified plumbing services throughout Fort Collins, 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 long-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 CertificationEfficient Tankless Water Heater Replacement Services in Fort Collins, CO
Condensing Tankless Replacement in Fort Collins
Condensing tankless units like the Navien NPE series or Rinnai Sensei reach efficiencies above 90 percent by capturing heat from exhaust gases. They vent through inexpensive PVC and produce acidic condensate that must be neutralized and drained properly. We install a neutralizer cartridge and route the condensate line to an approved drain. Dry air, intense sun, and big daily temperature swings put constant stress on pipes, fittings, and outdoor plumbing in Colorado. Condensing units still save gas because they work year-round on showers, laundry and dishes. We explain the cost difference so you can decide if the efficiency gain is worth it.

Gas Tankless Water Heater Replacement in Fort Collins
Many homes in Fort Collins rely on natural gas for water heating, and gas tankless units are a very efficient option. Our gas tankless water heater replacement service includes careful inspection of your existing gas lines, proper sizing of new gas lines if needed, and secure venting to the outdoors. We put a priority on safety. All gas connections and combustion air requirements meet Colorado and local codes, heading off potential hazards and maximizing efficiency.
Exterior Mount Tankless Units in Fort Collins, CO
Many homes have tankless heaters mounted on an exterior wall with no venting at all, since the unit exhausts directly outside. These units face sun, rain and temperature swings, which can break down plastic covers and wiring over time. Hard freezes are a normal part of winter in Colorado, and pipes in exterior walls, crawlspaces, and garages are especially vulnerable. When we replace them, we check the pipe cover, freeze protection settings and the electrical connection. We can add a protective pipe cover kit to guard the water and gas lines. Exterior models are often the simplest swap when the gas line is already sized correctly.
Emergency Tankless Replacement in Fort Collins, CO
A tankless heater that leaks from the heat exchanger or refuses to ignite can leave you with no hot water at all. We offer same-day emergency replacement for common models and can usually get a unit installed the day you call. If your exact model is not in stock, we can sometimes do a temporary repair to restore hot water while the replacement ships. We shut off gas and water to stop any leak on arrival. Call (720) 727-9398 any time your tankless quits.
Commercial Tankless Replacement in Fort Collins
Restaurants, salons and small offices often use multiple tankless units linked together on a rack system. When one or more units fail, we replace them and rebalance the cascade controls so they share the load. We check gas pressure under full demand, since commercial racks can draw more than 600,000 BTU combined. Scheduling is flexible, so we can work after hours and keep your business open. We also set up a descaling schedule suited to your water usage.
Rinnai Tankless Water Heater Replacement in Fort Collins
Rinnai is a leading brand in the tankless water heater market, known for its quality and engineering. If your Rinnai unit is aging or malfunctioning, GFR Plumbing provides expert Rinnai tankless water heater replacement in Fort Collins. We make sure your new Rinnai unit is installed correctly, maximizing its efficiency and lifespan. Our technicians know the installation requirements and venting options for Rinnai models, so the upgrade goes cleanly.
Residential Tankless Water Heater Replacement in Fort Collins
For homeowners in Fort Collins, upgrading to a tankless water heater offers real benefits like endless hot water and reduced energy use. We assess your household's hot water demand to recommend the right sized unit, so you get strong performance. Our team handles everything from safely disconnecting your old unit to installing the new tankless system. That includes all necessary gas and water line adjustments and venting changes to meet current codes.

Tankless vs. Tank Water Heater Conversion in Fort Collins, CO
Considering converting from a traditional tank water heater to a tankless system in your Fort Collins, CO home? This is a common and beneficial upgrade, but it requires specialized expertise. We handle the entire conversion, which can involve rerouting gas lines, upgrading electrical service, modifying water lines and installing new venting. Our team ensures a smooth transition, so you can enjoy the long-term benefits of a modern, efficient tankless system.
Tankless Water Heater Replacement Near Me in Fort Collins, CO
Looking for tankless water heater replacement near me in Fort Collins, CO? GFR Plumbing is your local pro, providing prompt and professional service across the whole area. Our team is located to respond quickly to your hot water needs, with fast service right to your doorstep.
Local service matters because tankless problems often show up during the busiest part of your day. Our techs are close by and can diagnose whether a repair or replacement makes more sense. We back every replacement with clear labor coverage and register your manufacturer warranty for you.
GFR Plumbing at a Glance
- Fully licensed plumbing team covering Fort Collins, CO
- 24/7 emergency service with same-day scheduling
- Clear written estimates, no hidden fees
- 4.8-star rated by 750+ Colorado customers
Fort Collins Map
Fort Collins Information
- Population
- 170,376
- Area codes
- 970/720/303
- Service area
- Fort Collins and communities within 40 miles
- Nearby
- Loveland, Greeley, Longmont, Boulder
Replacing an old tankless water heater in Fort Collins, CO is essential for a reliable hot water supply, especially with changing seasonal demands and mineral content that can cut into unit efficiency and lifespan.
Expert Services
Trust our professionals for reliable GFR Plumbing solutions in Fort Collins, CO.
Our Specialized Plumbing Services in Fort Collins, CO
At GFR Plumbing, we provide a complete range of plumbing services across Fort Collins, 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 Tankless Water Heater Replacement Process Works in Fort Collins, CO
We make sure every step, from initial consultation to final installation, is handled with professionalism and care.
Request a Quote
Call (720) 727-9398 with your current model number and a photo of the install. We give you a ballpark price and schedule a visit.
Size and Inspect
Our tech measures gas line size, meter capacity, venting path and water hardness. We recommend a unit that matches your hot water demand.
Install and Test
We remove the old heater, install the new one with service valves and venting, then test gas pressure and combustion. You get a walkthrough on settings and annual flushing.
Frequently Asked Questions About Tankless Water Heater Replacement in Fort Collins
The cost for tankless water heater replacement in Fort Collins, CO typically ranges from $3,000 to $6,000, depending on the unit's brand, capacity, fuel type (gas or electric) and any needed changes to gas lines, electrical or venting. This estimate includes both the new unit and professional installation. We will provide a detailed quote upfront after assessing your needs.
With proper installation and regular maintenance, a new tankless water heater usually lasts 20 to 25 years. This is significantly longer than traditional tank water heaters, which usually last 10 to 15 years. Regular flushing and descaling can help extend the life of your tankless unit, especially in hard water areas.
Well-maintained tankless units can last 15 to 20 years. In hard water areas without regular descaling, heat exchangers can fail far sooner. Annual flushing makes the largest difference.
A direct swap usually takes four to six hours. A tank to tankless conversion with new gas and venting usually takes a full day.
To protect the life and efficiency of your new tankless water heater, regular maintenance is crucial, especially in areas with hard water. This typically involves annual flushing to remove mineral buildup, checking the air filter, and inspecting gas and water connections. GFR Plumbing offers maintenance plans to help keep your unit in top condition.
Most manufacturers offer 10 to 15 years on the heat exchanger and about 5 years on parts for residential use. We add our own labor warranty and register the unit for you.
Repeated error codes, fluctuating temperature, water leaking from inside the cabinet and a unit older than 15 years are common signs. If the heat exchanger is leaking, replacement is usually the better value.
GFR Plumbing installs and replaces all major reputable brands of tankless water heaters. Our preferred brands include Rinnai, Navien, Noritz and Rheem, as they are known for their reliability, energy efficiency and long-term performance. We can also order and install other brands based on your preference or home requirements.
What People Are Saying About Our Plumbing Experts?

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 · Fort Collins, CO
Sofia M.
Two new toilets installed in one visit, no mess left behind, and the tech even adjusted a faucet he noticed was dripping. Fair pricing and really friendly.
Toilet Installation · 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 · Broomfield, CO
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 · 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 · Broomfield, 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













