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Top Tankless Water Heater Service Companies in Garland, Texas Ranked
Upgrading to a tankless water heater is a significant home improvement decision for Garland residents, offering endless hot water and improved energy efficiency. This guide explains the critical aspects of installing and maintaining an on-demand water heater, from initial sizing and permitting to long-term care. You can use the information here to understand the process, evaluate your needs, and connect with qualified local professionals for your project.

Trident Plumbing
15222 King Rd Ste 301, Frisco, TX 75034
Trident Plumbing provides a range of plumbing services in Garland, TX, including water heater repair and installation, tankless water heater services, water softener installation, drain cleaning, sewer line repair, leak detection, and gas line installation. Their team includes Master Plumbers, licensed Journeymen, and Technicians who receive ongoing professional education. Trident Plumbing also offers specialized slab leak detection and repair, supporting both residential and commercial plumbing needs.

O'Bryan Plumbing Services
800 Fulgham Rd Suite 35, Plano, TX 75093
O'Bryan Plumbing Services is a plumbing company serving Dallas, TX, offering a wide range of plumbing solutions including water heater repair and installation, sewer and drain cleaning, leak detection, and gas line installation. They use advanced technology such as sewer camera inspections to accurately diagnose and address plumbing issues. Established in 1982, O'Bryan Plumbing Services brings decades of experience to their work, providing comprehensive plumbing maintenance and repair services to residential customers.

DFW PipePros
1350 E Arapaho Rd Suite 130, Richardson, TX 75081
DFW PipePros is a locally owned plumbing company serving Dallas, TX. They provide a wide range of plumbing services including water heater repair and installation, tankless water heater services, drain cleaning, hydro jetting, leak detection, toilet repair, and garbage disposal repair. The company uses advanced techniques such as sewer camera inspections to accurately diagnose plumbing issues. DFW PipePros emphasizes transparent pricing and offers 24/7 emergency service to address urgent plumbing needs promptly.

Adr plumbing Co
plano
Adr Plumbing Co is a plumbing service provider based in Plano, TX, offering a wide range of services including water heater repair and installation, tankless water heater services, drain cleaning, sewer line repair, leak detection, repiping, toilet repair, and garbage disposal repair. They serve residential and property management clients with expertise in trenchless sewer repair and tunneling for under-slab repairs. Established in 2019, Adr Plumbing Co combines over 20 years of industry experience with well-stocked service vehicles to efficiently handle plumbing issues from minor leaks to major sewer line replacements. The company operates around the clock to address plumbing emergencies and routine maintenance needs.

Mother Modern Plumbing, Sewer & Drain
6060 N Central Expy Suite 770, Dallas, TX 75206
Mother Modern Plumbing, Sewer & Drain provides a wide range of plumbing services in Dallas, TX. Their expertise includes sewer camera inspections, water heater repair and installation, drain cleaning, sewer line repair, leak detection, repiping, gas line installation, and toilet repair. They are equipped to handle complex plumbing issues such as cast iron sewer line inspections using camera technology and comprehensive repiping projects. The company is known for its knowledgeable technicians who communicate clearly and offer multiple repair options. Mother Modern Plumbing serves residential customers throughout Dallas and emphasizes thorough diagnostics and tailored solutions.
Understanding Tankless Water Heater Systems
Unlike traditional storage tank models, tankless or on-demand water heaters heat water directly as it flows through the unit. This eliminates the standby energy losses associated with keeping a large tank of water hot, which can lead to lower utility bills for many households 1. When a hot water tap is turned on, cold water travels through a pipe into the unit, where it is heated by either a high-powered gas burner or an electric element. This provides a continuous supply of hot water, ideal for larger families or homes with high simultaneous demand, such as running a shower and dishwasher at the same time.
The core appeal is efficiency and space savings. A tankless unit is typically mounted on a wall, freeing up valuable floor space in your garage or utility closet. For Garland homeowners, the shift to an on-demand system is a modern upgrade that aligns with a focus on long-term home value and reduced energy consumption.
Key Considerations Before Installation in Garland
A successful tankless water heater installation hinges on proper planning. Several technical and logistical factors must be addressed to ensure the system meets your home's demands and complies with local codes.
Sizing Your System Correctly
The most crucial step is sizing the unit for your household's peak hot water demand, measured in gallons per minute (GPM). An undersized unit will struggle to supply enough hot water during peak usage times. A professional plumber will calculate this based on the number of bathrooms, appliances, and fixtures in your home 2 3. This assessment ensures you invest in a system that delivers the performance you expect.
Fuel Type: Gas vs. Electric
Your choice between a gas or electric on-demand water heater has major implications for cost, performance, and installation complexity.
- Gas Tankless Heaters: These are generally preferred for whole-home systems in Garland due to their higher flow rates and ability to meet significant demand. They tend to have a longer operational lifespan. However, installation is more complex and costly, as it requires a properly sized gas line and dedicated, sealed venting-often stainless steel-to safely exhaust combustion gases 2 1.
- Electric Tankless Heaters: Electric models are often cheaper to install because they don't require venting or gas line work. They are compact and easier to mount. The primary challenge is electrical demand; these units require a substantial amount of amperage and may necessitate an upgrade to your home's electrical panel, which can add significant cost 2 4.
Permits and Inspections
The City of Garland requires a permit for water heater replacement, including tankless installations 5. Your licensed plumbing professional will typically pull this permit. After installation, a city inspection is mandatory to ensure the work meets all plumbing and building codes for safety. This process protects you as a homeowner and ensures the installation is performed correctly.
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The Installation Process: What to Expect
A professional tankless water heater installation follows a structured process to ensure safety, efficiency, and compliance.
- Initial Inspection and Sizing: A technician will visit your home to assess your hot water needs, evaluate the installation location, and inspect existing gas, electrical, and water connections 6 7.
- Detailed Quote: You will receive a comprehensive quote outlining all costs, including the unit, labor, any necessary upgrades (like gas lines or electrical panels), venting materials, and permit fees 8.
- Preparation and Removal: The old water heater is safely disconnected and removed. The site is prepared for the new unit.
- Installation and Connection: The new tankless unit is mounted. New water lines, gas lines (or electrical connections), and venting (for gas models) are installed as needed. All connections are meticulously tested for leaks 6.
- System Startup and Inspection: The unit is activated, calibrated, and tested to ensure it operates correctly. Finally, the city inspection is scheduled and completed to close the permit 5.
Cost Breakdown for Garland Homeowners
The total investment for a tankless water heater in Garland varies widely based on the unit's capacity, fuel type, and the complexity of the installation. Here's a general cost breakdown:
- Total Installation Cost: Homeowners can expect a range from $2,500 to over $10,000, with many typical whole-home installations falling between $4,500 and $7,000 2 9 10.
- Unit Cost: The tankless heater itself typically ranges from $600 to $2,400+, depending on brand, features, and flow rate 11 12.
- Labor: Professional installation labor can range from $600 to $1,850 or more, heavily dependent on the job's complexity 4 10.
- Essential Upgrades: These often represent a significant portion of the cost:
- Gas Line Upgrade: If needed, upgrading a gas line can cost $800 to $2,400+ 9 11.
- Venting System: Installing the necessary venting for a gas unit can range from $300 to $2,300+, especially for long or complex runs 2 9.
- Electrical Upgrade: Adding a new circuit or upgrading your electrical panel to support an electric model can add a substantial amount to the total cost 4.
It's important to get detailed, written quotes from multiple providers. Some high-efficiency models may also qualify for federal tax credits, which can help offset the initial investment 13.
Ongoing Maintenance and Repair Needs
To protect your investment and ensure years of reliable service, regular maintenance is non-negotiable, especially in Garland's hard water area.
- Annual Descaling: This is the most critical maintenance task. Hard water minerals (scale) build up inside the heat exchanger over time, reducing efficiency and potentially causing damage. A professional will flush the system with a vinegar or descaling solution annually to remove this buildup 8 14. Neglecting this can shorten the unit's lifespan, which is otherwise typically around 20 years 15.
- Filter Cleaning: The unit's water inlet filter should be checked and cleaned regularly to prevent flow restriction.
- Professional Check-ups: Having a technician perform an annual inspection can catch minor issues before they lead to a complete breakdown or inefficient operation.
When repairs are needed, common issues include error codes due to scale buildup, ignition problems in gas units, or failure of internal components. Always rely on a technician certified to work on your specific tankless water heater brand for repairs.
Choosing the Right Professional in Garland
Given the technical complexity and code requirements, selecting the right installer is paramount. Look for a licensed, insured plumber with specific experience installing tankless water heaters. They should be familiar with Garland's permit process and able to provide a clear, detailed estimate that includes all potential costs for upgrades and city fees. Checking reviews and asking for references on similar installations in the area can provide confidence in your choice.
Frequently asked questions
Sources
Footnotes
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Cost to Install or Replace Tankless Water Heaters - Reliant Plumbing - https://reliantplumbing.com/water-heaters/tankless-water-heaters/cost-to-install-or-replace/ ↩ ↩2
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Tankless Water Heater Installation Cost - Complete Guide - https://cycloneplumbingusa.com/tankless-water-heater-installation-cost/ ↩ ↩2 ↩3 ↩4 ↩5
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Water Heater Cost in DFW (2026 Report) - https://www.cowtownwaterheaters.com/water-heater-cost-dfw/ ↩
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What's Water Heater Replacement Cost In Garland, TX? | Triple Crown - https://www.triplecrownplumbing.com/expert-tips/whats-the-water-heater-replacement-cost/ ↩ ↩2 ↩3
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Water Heater Replacement - Garland, TX - https://www.garlandtx.gov/3189/Water-Heater-Replacement ↩ ↩2
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Tankless Water Heater Installation in Dallas-Fort Worth, TX - billyGO - https://www.billygo.com/plumbing-services/tankless-water-heater-installation/ ↩ ↩2
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Water Heater Replacement in Garland, TX - PPM Plumbing - https://ppmplumbing.net/plumbing/water-heater-replacement/ ↩
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Tankless Water Heater Services in Garland, TX - PPM Plumbing - https://ppmplumbing.net/plumbing/tankless-water-heater/ ↩ ↩2
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True Cost to Install a Tankless Water Heater in Dallas - Mother - https://www.callmother.com/blogs/true-cost-to-install-a-tankless-water-heater-in-dallas ↩ ↩2 ↩3
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Cost To Install a Tankless Water Heater in Texas - Jon Wayne - https://jonwayne.com/blog/cost-tankless-water-heater-tx/ ↩ ↩2
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Tankless Water Heater Costs 2025 | Price & Installation Guide - https://www.crplumbingdfw.com/tankless-water-heater-costs-in-2025-price-breakdown-installation-guidebook/ ↩ ↩2
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How Much Does a Tankless Water Heater Cost in Dallas, TX? | Angi - https://www.angi.com/articles/how-much-does-tankless-water-heater-cost/tx/dallas ↩
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Licensed Tankless Water Heater Replacement in Garland - https://www.callmother.com/local/tankless-water-heater-replacement-in-garland ↩
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What to Know About Tankless Water Heater Installation - https://orchard.com/blog/posts/tankless-water-heater-installation ↩
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Tankless Water Heater Installation in Bay Area and Sacramento | Jazz - https://www.calljazz.com/water-heaters/tankless/installation/ ↩