Top Tankless Water Heater Service Companies in Longmont, Colorado Ranked

A tankless water heater provides hot water on demand, eliminating the need for a bulky storage tank and offering significant energy savings. For Longmont homeowners, these systems are particularly appealing due to their long lifespan and efficiency, but they require specialized knowledge for proper installation given our unique high-altitude conditions. This guide helps you understand the key considerations for installing or repairing an on-demand water heater and how to connect with qualified local professionals for your project.

Big Apple Plumbing LLC - Broomfield, CO

1022 Depot Hill Rd Unit 10, Broomfield, CO 80020

Big Apple Plumbing LLC - Broomfield, CO provides a wide range of plumbing services in Denver, CO, including drain cleaning, sewer line repair, water heater installation and repair (tank and tankless), leak detection, gas line installation, sump pump repair, and repiping. The company serves both residential and commercial clients, handling routine maintenance, emergency repairs, and new installations with licensed plumbers. They specialize in sewer line services and offer 24/7 emergency plumbing solutions to address urgent issues like burst pipes and leaks. Big Apple Plumbing is locally owned and operated, with a focus on safety and code compliance. Their team is experienced in gas line installations and water heater replacements, ensuring efficient and reliable service. The company is known for upfront pricing, timely arrivals, and clear communication, serving Broomfield and surrounding areas including Anthem, The Broadlands, and Interlocken/FlatIron Crossing.

5.0

490 Reviews

Big Apple Plumbing LLC - Thornton, CO

12298 Pennsylvania St Unit 3016, Thornton, CO 80241

Big Apple Plumbing LLC - Thornton, CO offers a wide range of plumbing services in Denver, CO, including water heater repair and installation, sewer line repair, drain cleaning, leak detection, and gas line installation. Their team uses advanced tools such as sewer camera inspections and hydro jetting to diagnose and resolve plumbing issues efficiently. Established in 2014, Big Apple Plumbing has over a decade of experience serving the Thornton area and nearby neighborhoods like Hunters Glen, Eastlake, Cherrywood, and Trail Winds Park. They provide 24/7 emergency plumbing services to address urgent problems at any time.

5.0

84 Reviews

Pipecraft Plumbing, Inc

Denver, CO

Pipecraft Plumbing, Inc is a plumbing service provider located in Denver, CO. They specialize in water heater repair, including tankless water heaters, and leak detection services. Their expertise includes working with Rinnai tankless water heaters to address heating issues and prevent water damage from leaks.

4.9

207 Reviews

King Rooter & Plumbing | Plumber Boulder, CO | Drain Cleaning | Sewer & Water Line | Tankless Water Heater Repair

1434 Spruce St Suite 100, Boulder, CO 80302

King Rooter & Plumbing is a plumbing service provider based in Denver, CO, offering a wide range of plumbing solutions including drain cleaning, sewer and water line repair, water heater installation and repair, and gas line installation. They use advanced technologies such as sewer camera inspections and trenchless sewer repair with NuFlow pipe relining to minimize property disruption. With over 50 years of combined experience, King Rooter & Plumbing has been serving the Denver and Boulder metro areas since 2007. They provide same-day and emergency plumbing services to address urgent needs promptly.

4.9

184 Reviews

Benjamin Franklin Plumbing of Denver

1020 W 124th Ave #700, Westminster, CO 80234

Benjamin Franklin Plumbing of Denver provides plumbing services in Denver, CO, specializing in water heater repair, tankless water heater installation, drain cleaning, sewer line repair, and leak detection. They offer 24/7 emergency plumbing service to address urgent issues at any time. The company emphasizes routine maintenance such as annual water heater flushing and drain cleaning to help prevent common plumbing problems. They also assist with plumbing upgrades for water conservation and provide professional inspections to identify issues in older homes.

4.8

2.9k Reviews

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Why Consider a Tankless System in Longmont?

Switching from a traditional tank-style heater to a tankless, or on-demand, system offers several advantages for Colorado homes. The most immediate benefit is endless hot water, as the unit heats water directly as it flows through the system. This is ideal for larger households or those who enjoy long showers. More importantly, tankless heaters are highly energy-efficient, as they only operate when you need hot water, eliminating the "standby" heat loss associated with storage tanks. This can lead to noticeable savings on your utility bills over time.

In the Longmont area, the longevity of these units is a major selling point. With proper annual maintenance, a tankless water heater can last 20 to 25 years, which is significantly longer than the average 10-15 year lifespan of a conventional tank heater ^{1 2}. While the upfront installation cost is higher, the combination of energy savings and extended service life makes a tankless system a compelling long-term investment for many homeowners.

Critical Installation Factors for Longmont Homes

Installing a tankless water heater is not a simple swap for an old tank. It's a complex project that requires careful planning and professional expertise, especially given Longmont's elevation.

Proper Sizing is Paramount: Sizing a tankless unit is more nuanced than sizing a tank heater. It requires calculating the home's peak hot water demand (measured in gallons per minute, or GPM) and the necessary temperature rise, which is the difference between incoming groundwater temperature and your desired hot water temperature. At high altitudes, the numbers on generic online sizing charts can be inaccurate. A professional assessment is essential to ensure your new system can meet your household's simultaneous hot water needs, such as running a shower and dishwasher at the same time.

Venting Requirements: Gas and propane tankless heaters require dedicated, sealed venting to the outside for intake and exhaust. Due to the corrosive combustion byproducts and high temperatures, this venting must be made of a corrosion-resistant material like stainless steel. If your home doesn't have an existing, compatible vent run, installing a new one can add significant complexity and cost to the project ³.

Gas Line and Electrical Capacity: Your home's infrastructure must support the new unit. Natural gas or propane models require a gas line with sufficient capacity to deliver the required volume. Often, an upgrade from a 1/2-inch to a 3/4-inch gas line is necessary. These models also typically need a standard 120V electrical outlet for the control panel. Electric tankless models, on the other hand, demand substantial electrical upgrades, often requiring multiple new dedicated circuits with heavy-gauge wiring, which can be a major project in itself.

Water Pressure Check: Tankless units require a minimum water flow rate to activate. A professional should check your home's water pressure and flow rate before installation to ensure compatibility and optimal performance.

Understanding Costs: Installation and Replacement

The total cost for a tankless water heater in Longmont varies widely based on the scope of work, the unit selected, and the necessary upgrades to your home's systems.

New Installation (No Existing Tankless System): For a home without any prior tankless setup, installing a new gas unit is the most comprehensive project. Total costs typically range from $3,000 to over $8,000. This price includes the unit itself, labor, and all necessary ancillary work such as running new stainless steel venting, upgrading the gas line, and ensuring full code compliance ⁴.

Replacement (Converting from Tank to Tankless): If you are replacing an existing storage tank water heater with a tankless model, costs generally range from $2,400 to $5,400 or more. The final price heavily depends on how much modification is needed. If the existing gas line and venting can be reused or adapted, costs will be lower. However, if significant gas or venting upgrades are required (which is common), the price will approach that of a new installation ^{5 6 7 8}.

Essential Maintenance for Longevity

To achieve the promised 20+ year lifespan, annual maintenance is not just recommended; it's required. This service, best performed by a qualified technician, involves flushing the unit to remove mineral scale buildup (descaling), cleaning the inlet water filter, and performing a full system inspection.

In areas with hard water, which is common in parts of Colorado, mineral buildup can occur more rapidly and may necessitate more frequent flushing to maintain efficiency and prevent damage. This routine maintenance is a small investment that protects your larger investment and ensures your system runs safely and efficiently for years to come.

Finding Professional Service in Longmont

Given the technical complexities of installation and the importance of proper maintenance, selecting the right service provider is crucial. Look for plumbing and heating companies with specific experience in tankless systems and a proven track record in the Longmont area. Reputable local providers can conduct the necessary site evaluation, address high-altitude sizing challenges, pull the required permits, and ensure the installation meets all local building codes.

Companies such as Lion Home Service, Save Home Heat Company, M and M Heating, Cooling, Plumbing and Electrical, Canyon Plumbing & Heating, and Nxt Gen Plumbing are examples of firms that offer tankless water heater services in the region ^{9 10 11 12 13}. Always seek multiple site-specific quotes to compare costs, proposed solutions, and warranties.

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