Looking for a tankless water heater in Northern Virginia? Leonard Splaine installs, repairs, and maintains on-demand tankless systems for endless hot water, and helps you decide if the upgrade makes sense for your home.
Why us?
Serving Northern Virginia
A tankless water heater heats water on demand instead of keeping a tank hot around the clock, which means endless hot water, lower utility bills from reduced standby energy loss, and a 20-plus-year lifespan that's roughly double a tank model, plus you get the floor space back. We install and convert homes to tankless across Northern Virginia, repair every brand, and keep them running with annual descaling, sizing them right to your household's demand and handling the gas and venting upgrades that tankless often needs.
Tankless systems are unforgiving of shortcuts. The gas line, the venting, and the annual descaling all have to be done right, or the unit pays for it in efficiency and lifespan. Northern Virginia homeowners have trusted that work to Leonard Splaine since 1956, and over 1,300 Google reviews averaging 4.9 stars say the care still shows. Replacement estimates are always free.
Give us a call and a live person answers, whatever the hour, whether you're planning a tank-to-tankless conversion or staring at an error code with a cold shower behind you. We can usually have a tech or an estimator out the same day.
Our Services
Installation, repair, and maintenance for on-demand tankless systems across Northern Virginia.
We install new tankless water heaters and convert homes off old tanks across Northern Virginia. That means sizing the unit to your peak hot-water demand, upgrading the gas line and venting where it's needed, and mounting it clean, so you get reliable endless hot water and your floor space back.
Cold water sandwich, error codes, or no hot water at all, we repair every brand of tankless. Our techs handle failed igniters and flame sensors, flow sensors, scaled-up heat exchangers, and control boards, and get your on-demand hot water back fast.
Northern Virginia's hard water scales up a tankless heat exchanger, and scale kills efficiency and shortens its life. An annual descaling flush clears it out and keeps the unit running like new. It's the single most important thing you can do for a tankless.
A tankless burns a lot of gas fast when it fires, so it often needs a larger gas line and dedicated stainless venting that a tank never did. We size and install the gas and venting to code, which is exactly the part a lot of DIY and cut-rate installs get wrong.
The whole point of tankless is never running out, but only if it's sized for how your home actually uses hot water. We match the unit's flow rate to your fixtures and habits, so two showers and the dishwasher at once still means hot water, not a cold surprise.
Tankless units reward regular care. Our maintenance plan covers annual descaling and inspection, priority scheduling, waived diagnostics, and repair discounts, which keeps the unit efficient and the warranty valid. Ask us for the current details.
Brands
We install Navien tankless, and we service every other major brand too, including Rinnai, Rheem, A.O. Smith, and Bosch.
The difference
Already know what you need?
Reviews
Real reviews from real Leonard Splaine tankless water heaters jobs across Northern Virginia. We've earned our 4.9-star average the slow way: answering the phone, showing up on time, and doing right by every home.
Lynn Gilbertson Google review Kyle provided emergency holiday weekend service when our a/c was completely out with 104F "feels like" temperatures. He quickly diagnosed and fixed our system, with solutions for avoiding similar problems in the future. We are grateful to Kyle and Leonard Splaine!
Katie Kada Facebook recommendation Couldn't have asked for better service! Leonard Splaine was timely, honest and did a wonderful job replacing our very outdated AC unit. We plan to use them again for any service or replacement in the future and we'll recommend them to our friends and family.
I will definitely use this company again! Our AC went out on one of the hottest days of the year. They answered and came to the rescue! Family owned and very kind. Technician was knowledgeable and quick.
Ankur Mundra Facebook recommendation I've used Leonard Splaine the last 5 years. They are professional, provide quality service, and answer my questions and concerns. Michael Ford came out this year to do my spring maintenance as well as eztrap installation and condenser coil cleaning. He did an excellent job.
Candace Bond Google review They were such gentlemen and seemed to be very knowledgeable and honest. They were also very patient and took the time to answer all of our questions. I would highly recommend these guys.
A/C stopped working on the hottest day of the year, so far. They came over the same day and had it up and running in no time. The price was reasonable and the tech was great.
Our Team
Every tankless water heaters visit is handled by real, named people who treat your home like their own. We're family-owned, 70 years in, and three generations of the same family crew. When you call Leonard Splaine, you reach these folks. Learn more about us.
Ted Leonard 3rd-Generation Owner 
Gary Leonard 2nd-Generation Owner 
Johnny Baker General Manager 
Erin Simmons Office Manager 
Brian Boyce Service Manager 
Brad Hoskins Field Supervisor 
Ira Sacknowitz Install Manager 
Ricky Seminario Comfort Advisor Where we work
Headquartered on Occoquan Road in Woodbridge, we bring tankless water heaters to Prince William, Fairfax, Arlington, Alexandria, Stafford, and the towns in between every day.
Don't see your town? If you're in Northern Virginia, call us. Odds are we've got a truck nearby.
Good questions
The questions Northern Virginia homeowners ask us most about tankless water heaters. Anything else, the phone's faster than the internet.
For many homes, yes: endless hot water, lower standby energy loss, and 20-plus years of life, plus you reclaim the floor space. It costs more upfront and often needs gas and venting upgrades, so we walk you through whether it pays off for your home before you commit.
Yes, as long as the unit is sized to your demand. A right-sized tankless keeps producing hot water for as long as you need it, but an undersized one can struggle when several fixtures run at once, which is why sizing matters.
They do, more than most people expect. Northern Virginia has hard water, which scales up the heat exchanger, so tankless units should be descaled once a year to stay efficient and last their full 20-plus years.
Usually, yes. The main considerations are gas line size and venting, since tankless needs more of both. We assess your setup, handle the upgrades to code, and tell you the real cost upfront so there are no surprises.
A well-maintained tankless commonly lasts 20 years or more, roughly double a tank. Annual descaling is what gets you to the top of that range.
Same-day service across Northern Virginia. Talk to a real person, day or night.
