Based in Leesburg, VA

Tankless Water Heater Installation & Repair in Leesburg

Tankless Water Heater Installation in Leesburg, VA: factory-certified installation, no overtime fees, serving all of Loudoun County.

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venting configuration work, professional service in Leesburg, VA

Leesburg Tankless Water Heater Installation Done Right

Brick Street Plumbing Heat & Air handles tankless water heater installation in Leesburg, VA for homeowners across Loudoun County who are done paying to heat water they're not using. Our factory-certified, dual-certified technicians size the unit to your home's actual flow rate demand, pull the right gas line or electrical supply, and configure venting before a single connection gets made. Call (240) 969-4911 now. We're available 24/7 and we don't charge overtime.

The install itself covers more ground than most contractors explain upfront. Depending on your current setup, the job can include a gas line upgrade (tankless units draw a larger BTU load than tank heaters), a new dedicated venting run, a water quality assessment, and a condensate drain for condensing models. Leesburg's water consistently tests hard, which accelerates scale buildup inside a tankless heat exchanger faster than the manufacturer's baseline assumes. We account for that in the unit we recommend and in the maintenance schedule we leave with you. Cost varies with fuel type, gas line condition, venting distance, and home layout. Every job is different, contact Brick Street Plumbing Heat & Air for an accurate estimate.

What the Installation Actually Covers

A tankless install is a system-level project, not a swap. Here's what we handle on every job.

Sizing and Load Calculation

We calculate your peak simultaneous flow demand, showers, dishwasher, laundry running at once, then match it to the correct BTU or kW rating. An undersized unit is the most common installation mistake we see from other contractors. We won't make it.

Gas Line Assessment and Upgrade

Most Leesburg homes have a 1/2-inch or 3/4-inch gas supply line serving the old tank heater. High-output tankless units often require a larger line or a dedicated run. We check capacity before we quote and include any required upgrade in the scope, no surprise add-ons after the work starts.

Venting Configuration

Tankless units vent differently depending on whether they're direct-vent, power-vent, or condensing. Older Leesburg homes with finished basements or narrow mechanical rooms add complexity. We scope the venting path on the first visit so there are no surprises when we're on the job.

Tank-to-Tankless Conversion

Switching from a conventional tank to a tankless system is the bulk of what we install. That includes removing the old unit, reconfiguring the supply and return lines, and making sure the pressure relief and shut-off hardware meets current Virginia code.

Hard Water and Scale Protection

Loudoun County water is hard. Without a filter or softener ahead of the heat exchanger, scale builds fast and voids most manufacturer warranties in 3 to 5 years. We'll tell you honestly whether your water quality warrants a whole-home water filtration system before we finalize the install.

Startup, Testing, and Walkthrough

We don't hand you a manual and leave. After startup we verify flow rate, check for gas or water leaks, confirm the digital temperature settings are dialed in, and walk you through the maintenance schedule. The workspace leaves cleaner than we found it.

How It Works

Our Three-Step Installation Process

Site Assessment
We visit your home, measure peak hot water demand, inspect the gas supply line and meter, evaluate venting options, and test your water hardness. That data sets the scope, no guessing.
Full Installation
Our licensed plumbing professionals handle gas line work, venting, unit mounting, water connections, and all code-required permits and inspections. We work clean and finish the job in a single visit on most Leesburg homes.
Testing and Handoff
We run the unit through its full range, check every connection twice, confirm your hot water flows to every fixture at spec, and leave you with a written maintenance checklist. If anything isn't right, we come back, same rate, no overtime.

Is a Tankless Water Heater Worth It for a Leesburg Home?

Honest answer: for most Loudoun County households, yes, but the math matters. A conventional 50-gallon gas water heater lasts 10 to 12 years and runs constantly to keep stored water hot. A quality tankless unit lasts 18 to 22 years and fires only when you open a tap. On a typical Northern Virginia utility bill, that gap adds up. The upside is real, but so is the upfront cost, and we won't push you toward a tankless replacement if a water heater repair on your existing tank makes more sense for your situation. We'll tell you which one is actually the right call after we see your setup. Homes in Ashburn, Brambleton, and the newer Loudoun County subdivisions tend to see the strongest return because the construction is newer, gas lines are already sized larger, and the homes are built around higher hot water demand from multiple bathrooms. Older Leesburg homes with original gas supply lines sometimes need a larger-diameter run before a tankless unit can perform correctly. That's a real cost some contractors don't mention until they're already on the job. We scope it before we quote.

sizing and load calculation work, professional service in Leesburg, VA

Straight from Google

What 282 Loudoun County Homeowners Say

4.6282 verified Google reviews

Fantastic service - bought a home with a very old hot water heater, and Brick Street’s quote came out to be substantially less than the other plumbers I spoke with. No compromise on service for the price, though - Mary was incredibly responsive and friendly when it came to scheduling a time to install the new water heater, and Tylerr did an outstanding job getting the water heater set up and running. Overall very easy to work with, reasonably priced, and professional!

Alex LafranceJul 2026 · Google

⭐⭐⭐⭐⭐ Excellent Service – Highly Recommend Brick Street Plumbing Water Heaters I recently had my entire HVAC system replaced after my old unit had been in my home for over 20 years. I requested an estimate through Home Depot, and they referred me to Brick Street Plumbing. Water Heaters, From beginning to end, my experience was excellent! Brian came to my home, carefully explained the different options available, and walked me through the entire installation process. He was very professional, knowledgeable, patient, and always available to answer my questions. Communication with Brian was outstanding throughout the entire project. One of the best parts of the installation was that they were able to relocate my water heater into an unused space in my basement. This made the entire HVAC area much more spacious, organized, and accessible. I am extremely happy with how everything turned out! I also want to recognize Austin, Gmo, and Dani for their excellent work. They were professional, hardworking, respectful of my home, and paid great attention to detail. The entire team did an amazing job! Replacing an HVAC system is a major investment, but Brick Street made the entire experience smooth and stress-free. I am extremely satisfied with the quality of their work, professionalism, and customer service. I highly recommend Brick Street to anyone looking for a reliable company for HVAC installation or replacement.

Jose CamposOct 2026 · Google

They did an outstanding job replacing my gas water heater with an electric one, including all the conversions.

Whiting WickerOct 2026 · Google

I couldn’t be happier with my experience with Brickstreet Plumbing and their installation of my new HVAC systems. From start to finish, the entire team demonstrated an outstanding level of professionalism, knowledge, and care. The quality of their work and the way they treated my home exceeded my expectations. Brian truly goes above and beyond to make sure everything is done right and that his customers are completely satisfied. He takes pride in his work and leads a team that reflects the same high standards. I especially want to recognize Marlon, Austin, and Dani. They were absolutely fantastic! All three showed incredible professionalism, respect, and dedication throughout the job. They were meticulous with every detail, took the time to make sure everything was properly installed, and maintained a clean and organized work area. They treated my home with care and respect, which meant a great deal to me. Their attention to detail, work ethic, and commitment to doing things the right way truly stood out. You can tell they take pride in their work and genuinely care about the quality of the results. I would recommend Brickstreet Plumbing to everyone without hesitation. I will absolutely hire them for future projects. After experiencing this level of service, professionalism, and trust, I honestly cannot imagine going with another company. Thank you, Brian, Marlon, Austin, and Dani, for doing such an outstanding job! You have earned my trust and appreciation, and I highly recommend your team to anyone looking for exceptional plumbing and HVAC services.

Aman SethiOct 2026 · Google

Update 10/2/2026 The manager got in touch with us and promptly sent out a service technician that was able to quickly diagnose and troubleshoot the issue with our thermostat. ------------------------------------------------------------------------------------------------------ We got our AC replaced by Brick Street through Home Depot. After a week our AC wasn't working so we had to put in a service call. They came out and fixed it. Then our heating wasn't working and we put in a service call to have a tech come out to and troubleshoot but their HVAC department has been non responsive via email or voice mail. We are not able to get in contact with them at all. Will not be doing business with this company again. Very poor customer service.

Hai NguyenOct 2026 · Google

Great service and installation by Tyler!

Adrian CalameAug 2026 · Google

Very very pleasant and professional and explained everything...

Mary CarterJul 2026 · Google

Read all 282 reviews

Tankless Water Heater Installation: Common Questions

How much does tankless water heater installation cost in Leesburg, VA?

Cost depends on fuel type (gas vs. electric), whether your gas line needs to be upsized, how far the venting run has to travel, and the unit's BTU or kW rating for your home's demand. A straightforward replacement on a home with an existing adequate gas line is a different scope than a full tank-to-tankless conversion with a new gas run and venting penetration. Every job is different, contact Brick Street Plumbing Heat & Air for an accurate estimate.

How does Leesburg's hard water affect a tankless water heater?

Loudoun County water runs consistently hard. Scale deposits form inside the heat exchanger faster than manufacturers calculate their ratings for, which shortens equipment lifespan and can void a warranty inside of five years. We assess your water hardness on the first visit and recommend a pre-filter or softener when the numbers justify it. Most condensing tankless units also require annual descaling in this market, we put that schedule in writing before we leave.

What size tankless water heater does my Leesburg home need?

Sizing is based on your peak simultaneous demand: how many hot water fixtures can run at the same time and at what flow rate. A two-bathroom home with one shower and a dishwasher running concurrently has a very different demand profile than a four-bathroom home with a soaking tub. We run the calculation on-site using your actual fixture count and groundwater temperature, roughly 52 degrees Fahrenheit for Loudoun County, before specifying a unit.

What are the gas line requirements for a tankless water heater installation?

High-output gas tankless units typically require a 3/4-inch or larger gas supply line and may demand a meter upgrade depending on your home's total BTU load. Virginia gas code specifies pipe sizing, bonding, and shut-off requirements that are stricter than what your old tank heater needed. We inspect the existing line before quoting and include any required upgrades in the scope, not as a surprise on install day.

Why do some plumbers push back on tankless water heaters?

The honest reason is that a tankless install is more complex than dropping in a tank heater, and not every plumbing company carries the gas line and venting knowledge to do it correctly. Improperly sized or vented tankless units underperform from day one and fail early. We won't install a unit we can't stand behind. If a tank water heater is the right answer for your home, we'll tell you that too.

What size tankless water heater does my home need?

Sizing is based on peak simultaneous hot water demand: how many fixtures run at once and at what flow rate. A two-bathroom home with one shower and a dishwasher running concurrently has a very different profile than a four-bathroom home with a soaking tub. We calculate your demand on-site using your actual fixture count and Loudoun County's groundwater temperature (roughly 52 degrees Fahrenheit) before specifying a unit.

What gas line work is typically required for a tankless water heater install?

High-output gas tankless units typically need a 3/4-inch or larger supply line and sometimes a meter upgrade depending on your home's total BTU load. Virginia gas code also specifies bonding and shut-off requirements stricter than what a conventional tank heater demanded. We inspect your existing line before quoting and include any required upgrades in the scope upfront, not as a day-of surprise.

How often does a tankless water heater need descaling in Northern Virginia?

In Loudoun County's hard water conditions, annual descaling is standard for most tankless units. Skipping it allows scale to restrict flow through the heat exchanger, reduces efficiency, and can trip the unit into error mode. Some condensing models have a built-in flush port that makes the job straightforward; older or budget units require more involved disassembly. We'll show you what your specific unit requires before we leave the job.

In the field

A look at our work

gas line assessment and upgrade work, professional service in Leesburg, VA

tank to tankless conversion work, professional service in Leesburg, VA

Ready to Go Tankless? Call Brick Street.

24/7 availability
No overtime fees
Factory-certified technicians serving Leesburg and all of Loudoun County

Call (240) 969-4911 for same-day service or to schedule your on-site assessment. We'll scope the job, explain exactly what it involves, and give you a straight answer on whether tankless is the right move for your home.

Open now · 24/7

(240) 969-4911

Based in Leesburg, VA.

4.6 from 282 Google reviews

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