Endless Hot Water with Expert Navien Tankless Heater Installation
Navien tankless water heater installation with proper gas line sizing.
A tankless water heater is a smart investment in your home's comfort and efficiency. Consider making the switch if you recognize any of these common issues:
Tankless Water Heater Installation — What Every Homeowner Should Know
Signs It's Time to Upgrade to Tankless
You frequently run out of hot water during showers or laundry.
Your current water heater is over 10 years old and nearing the end of its lifespan.
You want to significantly lower your monthly utility bills.
You're seeing rust-colored water or corrosion on your existing tank.
You want to reclaim the closet or garage space your bulky tank heater occupies.
Your current unit requires increasingly frequent and expensive repairs.
Our Tankless Water Heater Installation Process
Step 1: Initial Consultation and System Sizing
We start with a thorough assessment of your home's hot water demands, plumbing infrastructure, and venting options. Our MPL-38162 licensed plumbers calculate your exact BTU requirements to recommend the perfect Navien tankless model for your needs. No guesswork—just precise sizing for optimal performance.
Step 2: Safe Removal of Old Water Heater
Our licensed plumbers safely disconnect, drain, and remove your old tank-style water heater. We clear the space for your new, compact unit while protecting your floors and walls. Clean removal means clean installation.
Step 3: Mounting and Venting Installation
We securely mount the new tankless unit and install the necessary high-efficiency venting system. Our mobile warehouse carries all mounting brackets and venting components—ensuring safe and proper exhaust of gases. Permanent mounting, permanent solution.
Step 4: Gas and Water Line Connection
We professionally connect the water lines and perform any necessary gas line upgrades. Our trucks stock the proper pipe fittings and gas connectors to ensure your new unit has the correct fuel supply for optimal, consistent performance. We don't chase parts. We bring them with us.
Step 5: Condensate Drain Setup
A dedicated condensate drain line is installed to safely manage the moisture created by the high-efficiency condensing process. This protects your home and the unit from water damage. Proper drainage prevents future problems.
Step 6: System Commissioning and Final Walkthrough
We power up the unit, run a full diagnostic test, and commission the system to manufacturer specifications. Our licensed plumbers then walk you through its operation and answer any questions. One trip. Done.
Tankless Water Heater Options
Gas Condensing Tankless Heaters
The most popular and efficient choice. These units use a second heat exchanger to capture extra energy from exhaust gas, maximizing your energy savings. Perfect for whole-home solutions. We stock the complete Navien condensing line on our mobile warehouse.
Gas Non-Condensing Tankless Heaters
A standard-efficiency option that delivers a major upgrade from traditional tank systems. Requires different, more heat-resistant venting materials. We carry the specialized venting components. One trip installation with proper materials from day one.
Electric Tankless Heaters
Best suited for point-of-use applications like a single sink or bathroom. Also works in homes where gas service isn't available. Whole-home electric units often require significant electrical upgrades. We'll assess your panel capacity and electrical requirements upfront—flat-rate pricing approved before work begins.
Why Blackmon Plumbing for Your Tankless Installation?
Authorized Navien Dealer
We carry factory-trained expertise in installing and servicing the industry's leading tankless water heaters. Our technicians complete Navien's certification program. You get manufacturer-backed warranties and proper installation protocols.
Proper Gas Line Sizing
We guarantee your gas line is correctly sized from the meter to the unit. This critical safety and performance step gets missed by others. We measure, calculate, and upgrade lines to manufacturer specifications.
All-Inclusive Service
Our installations cover everything—venting, condensate drainage, gas line upgrades, and system commissioning. We don't dispatch a person. We dispatch a fully stocked mobile warehouse with complete installation capability.
Family-Owned Since 2007
We're your local, trusted Baytown plumbers committed to quality workmanship and customer satisfaction. MPL-38162 — Texas Responsible Master Plumber. Permanent repair, permanent solution.
Fully Stocked Mobile Warehouse
Our trucks carry the parts and tools needed to complete your installation efficiently. We don't chase parts. We bring them with us. One trip. Done.
Upfront, Honest Pricing
You receive a clear, detailed quote before we begin. Flat-rate, upfront pricing approved before work begins. No surprises, no hidden costs.
Service Areas
Blackmon Plumbing provides professional tankless water heater installation for homeowners throughout the region. If you need a reliable plumber in Baytown, Houston, or the surrounding communities, give us a call.
Our mobile warehouse circulates through key service corridors across Southeast Texas. We dispatch fully stocked box vans to handle tankless installations from the industrial corridors of Pasadena to the residential neighborhoods of League City. Every truck carries the specialty fittings, gas line components, and venting materials your tankless system requires.
Homeowners in Deer Park and La Porte know our reputation for permanent solutions. We handle the complex gas line modifications and electrical upgrades that tankless units demand. From Friendswood to Webster, we bring the right parts and technical expertise to complete your installation in one trip.
Whether you're upgrading from a traditional tank system in Pearland or installing your first tankless unit in Clear Lake, we carry manufacturer-specific components for all major brands. Our service area extends throughout Galveston County and Harris County, ensuring professional installation backed by our Master Plumber license MPL-38162.
One trip. Done. We fix it. We carry it. We dispatch immediately.
Tankless Water Heater Installation Questions
Tankless units heat water on demand—no storage tank required. You get endless hot water for back-to-back showers and simultaneous appliance use.
Space savings matter too. Tankless units mount on walls, freeing up floor space in utility rooms or garages. No risk of catastrophic tank failure flooding your home.
Energy efficiency runs 20-30% higher than traditional tanks. You only heat water when you need it—no standby losses from keeping 40-80 gallons hot around the clock.
Other Services You May Need
Water Heater Installation
Full tank water heater installation with code-compliant venting and gas line connections.
View Service →
Water Heater Repair
Same-day diagnosis and repair of gas and electric tank water heaters.
View Service →
Water Heater Replacement
Complete water heater replacement with old unit removal and code-compliant installation.
View Service →
Tankless Water Heater Repair
Certified Navien tankless service including descaling and error code diagnosis.
View Service →
Tankless Water Heater Replacement
Complete tankless water heater replacement with system upgrade and commissioning.
View Service →
House Repipe
Whole-house repiping to replace failing galvanized or copper pipes with modern PEX.
View Service →
Gas Line Repair
Emergency gas leak repair, line replacement, and red tag clearance.
View Service →
Gas Line Replacement
Complete gas line replacement from meter to appliances with code compliance.
View Service →
Gas Testing
Static pressure testing and gas leak surveys for residential and commercial systems.
View Service →
Backflow Preventer Installation
Professional backflow preventer installation for irrigation, commercial, and fire systems.
View Service →
Backflow Preventer Repair
Same-day repair of failed backflow devices with parts on the truck.
View Service →
Backflow Preventer Testing
Annual state-required backflow testing with documentation submitted to your water authority.
View Service →
Bathroom Remodel
Full-scope bathroom renovation including fixture relocation and new plumbing.
View Service →
Kitchen Remodel
Complete kitchen plumbing renovation for sinks, dishwashers, and gas appliances.
View Service →
Toilet Replacement
Complete toilet replacement with flange inspection, wax ring seal, and supply line upgrade.
View Service →
Water Line Repair
Emergency repair of water supply lines from meter to home.
View Service →
Water Line Replacement
Full replacement of water supply lines with modern materials.
View Service →
Commercial Plumbing Projects
Commercial plumbing for office build-outs, restaurants, and multi-unit properties.
View Service →What Customers Say
"As usual, Shane Blackmon, and his staff are awesome! You could not ask for a better group of people, being led by a man of great integrity. Thank you as my plumber and my friend. I also thank you for all your community..."
"I am so happy I chose Blackmon plumbing. The young lady in the office (Liz) is great at her job. I had my kitchen faucet fixed by the end of the day. I felt like I was an important VIP because of the fast, good service I..."
"Dillion & Mac arrived as scheduled, and professionally installed my new water heater. They were courteous and friendly. They also saved me $60 by accepting a check vs a card. THAT'S total customer service!"
"I had 4 pipes burst and Bret was at my house within the hour and did a great job fixing them at an affordable price. Thanks so much y'all!"
"Bret came out to do the annual service on our tankless hot water heater. The flush went well and our system looked in good shape. Bret knew exactly what was needed, was efficient, and my cost for this I consider to be a ..."
"Blackmon Plumbing connected gas to my home, which was a rather challenging endeavor due to the amount of pipe required to complete the connection. Doday and Mario did an outstanding job. The job required extremely precis..."
"We cannot speak highly enough of Dylan at Blackmon Plumbing! Dylan was incredibly professional, not only with us but also with our tenants, who had been without hot water for two weeks. Despite the challenging circumstan..."
"We are very pleased with the service from Blackmon Plumbing. Dylan and Dodany completed 5 different projects at our home this week. They were knowledgeable, prompt, responsive and courteous. Will use them again."
"Bret and Shane are awesome! Totally recommend them for plumbing!"
"Scott did a great job fixing my toilet. Would definitely recommend Blackmon."
"Brett and Leo were here. They were professional, efficient and friendly and did a great job in less time than expected. Hope they will both be back if we decide to install a new water heater."
"Came as soon as we needed them. Thought we needed a new water heater, but because of their honesty found out it was just a part needed. Thanks to Scott and Julio for a great job!"
"I had a wonderful experience with Blackmon Plumbing. Dylan arrived right on time. He was very polite, professional, knowledgeable and a hard worker! He had to haul an old toilet down the stairs and a new one up the stair..."
"We had a gas leak we needed found and fixed. They were able to fix it quickly with no hassle. Prices were fair! Would definitely do more business with them again."
"I had my kitchen faucet replacement last week and am very satisfied with Blackmon’s services. They only charged me one hour labor at a very reasonable price compared with other plumbing companies that tried to charge me ..."
"This company is fantastic. Shane and Laurie are very professional and a pleasure to do business with. I would highly recommend this to everyone."
"Very thorough and polite. Most importantly, they can be trusted. Yes, there are still plumbers with integrity who take pride in their work. Back-up generator installation was quick and done well."
"The folks at Blackmon have a customer first attitude. They do what they say and say what they do. Michael came by after the job was completed to double check that all is well. 5 plus stars are earned and their business d..."
"Wow! I don't usually leave reviews, but what a great overall experience from Blackmon Plumbing! My faucet had a leak requiring replacement. They did such a great job installing my gorgeous new sink! I loved the customer ..."
"Fast install and good price, but don't appreciate them leaving trash and old fittings in the attic. Sloppy craftsmanship."