No hot water or inconsistent temperature
We test the thermistor, clean the inlet filter, and verify gas pressure. If the unit is undersized, we recommend a larger model or a gas line upgrade. Most repairs finish in 2-3 hours.
Endless hot water, lower bills, expert installation and repair
Tankless Water Heater Services in Maryland Done Right
Maryland Plumbing Pros delivers Tankless Water Heater Services in Maryland for homeowners tired of running out of hot water. We install, repair, and maintain Rheem, Navien, and A.O. Smith units across the state. Whether you're in Glen Burnie or Lexington Park, our licensed plumbers handle sizing, code permits, and descaling. Since 2008, we've completed thousands of tankless jobs. Call (410)886-8838 for a same-day estimate.
Careful work. Honest options.
About this service
Tankless Water Heater Services in Maryland
Tankless Water Heater Services in Maryland means replacing or upgrading your old tank with an on-demand unit that heats water only when you turn on the tap. We handle wall-mounted and outdoor installations, gas and electric conversions, venting, and gas line upgrades. Our plumbers pull the Maryland State Plumbing Code permits, size the unit to your household demand, and flush the heat exchanger before we leave. You get endless hot water, a 20-year lifespan instead of 10, and a unit that takes up less space than a carry-on suitcase.
Maryland homes face hard water, freezing winters, and older pipe systems that can clog a tankless heat exchanger fast. In Baltimore rowhouses and Eastern Shore cottages alike, we see scale buildup that cuts flow within 18 months if you skip annual service. That's why we offer tankless water heater maintenance Maryland homeowners can schedule yearly. If you've been searching for tankless water heater services in Maryland near me, we cover every county from the mountains to the bay.
- ✓ Endless Hot Water
- ✓ Lower Energy Bills
- ✓ Space-Saving Design
- ✓ Longer Lifespan
What's included
What Our Tankless Water Heater Services Include
Every job includes the essentials: assessment, permit, installation, testing, and cleanup. We also offer add-ons like annual maintenance plans and gas line upgrades. Here's what you get.
✓
Full System Assessment
We measure water pressure, gas line capacity, and venting options. You get a written quote with unit recommendations from Rheem, Navien, or Bradford White. No guesswork.
✓
Permit and Inspection
We pull the Maryland State Plumbing Code permit and schedule the inspection. You don't chase paperwork or worry about code violations. We handle it all.
✓
Professional Installation
Our licensed plumber mounts the unit, runs venting, and connects gas and water lines with copper pipe or PEX tubing. Most installs finish in 4-6 hours.
✓
Testing and Walkthrough
We set the temperature, run hot water at every fixture, and show you how to read error codes. You learn what to check if the unit ever stops heating.
✓
Cleanup and Haul-Away
We protect your floors, remove the old tank, and leave the workspace cleaner than we found it. No extra charge for disposal.
✓
First-Year Maintenance Reminder
We schedule your annual descaling for 12 months out and send a reminder. Keeps your warranty valid and your unit running at peak efficiency.
How it works
Our Tankless Water Heater Process
01
On-Site Assessment
We measure your incoming water temperature (Maryland groundwater runs 50-55°F), check gas line size, and calculate peak demand. You get a written quote with unit options from Rheem, Navien, or Bradford White. Takes 45 minutes.
02
Permits and Prep
We pull the Maryland State Plumbing Code permit and schedule the inspection. If your gas line needs upsizing from 1/2-inch to 3/4-inch, we handle that with copper pipe and SharkBite fittings. You don't chase paperwork.
03
Installation Day
Our licensed plumber removes the old tank, mounts the new unit, runs the venting, and solders or crimps new PEX tubing. Most installs take 4-6 hours. We protect floors and haul away the old heater at no extra charge.
04
Testing and Walkthrough
We fire the unit, set the temperature to 120°F, and run hot water at every fixture to confirm flow. You learn how to read error codes and when to call us. We don't leave until you're satisfied.
05
Follow-Up and Maintenance
We schedule your first annual descaling for 12 months out. That service removes scale, checks the flame rod, and keeps your warranty valid. We send a reminder so you don't have to remember.
Tools & methods
Tools and Methods We Use
Purpose-built equipment, used by trained technicians — so the job is done accurately the first time.
RIDGID Diagnostic Tools
We use RIDGID leak detection equipment and inspection cameras to find hidden leaks and blockages without tearing into walls.
Milwaukee Cordless Tools
Milwaukee drills, saws, and crimping tools speed up installation and ensure clean, precise cuts on copper and PEX tubing.
SharkBite Fittings
SharkBite push-to-connect fittings let us make secure water line connections fast, especially in tight spaces where soldering is risky.
Water Heater Flush Kit
Our flush kit circulates food-grade descaler through the heat exchanger to remove mineral buildup during annual maintenance.
Pipe Wrench and Soldering Torch
For gas line upgrades and copper pipe work, we use a pipe wrench and soldering torch to create code-compliant, leak-free joints.
Real results
Before and after.
From Cold Showers to Endless Hot Water
Before
A family of five in Glen Burnie had a 12-year-old tank heater that ran out of hot water after two showers. They were late for work and school every morning.
After
We installed a Navien 199,000 BTU tankless unit. Now they run three showers and a dishwasher at once without losing temperature. Their gas bill dropped $40 the first month.
Error Code Fixed, Hot Water Restored
Before
A homeowner in Wheaton woke up to an error code on their Rheem tankless unit and no hot water. They'd been without service for two years.
After
We diagnosed a clogged inlet filter and scaled heat exchanger. After a full descaling and filter replacement, the unit ran like new. The repair took 2 hours.
Basement Reclaimed After Tank Removal
Before
A couple in Owings Mills wanted to finish their basement but the old 50-gallon tank heater took up valuable corner space and was prone to leaking.
After
We removed the tank and installed a wall-mounted Navien unit. They gained 12 square feet of floor space and eliminated the flood risk. The install passed inspection the first time.
Problems we solve
Tankless Water Heater Problems We Solve
From cold showers to error codes, we diagnose and fix the issues Maryland homeowners face most.
Ask a pro →↗
Error codes on the display
We carry diagnostic tools for Navien, Rheem, and A.O. Smith units. We read the code, test the component, and replace faulty parts on the spot. You get a clear explanation of what failed.
Scale buildup and reduced flow
We perform a full descaling with a water heater flush kit and food-grade descaler. The process takes about an hour and restores flow to like-new levels. We recommend annual service to prevent recurrence.
Leaking water lines or fittings
We tighten fittings, replace damaged sections with copper pipe or PEX tubing, and test under pressure. If we find corrosion in your home's pipes, we repair that too.
Transparent pricing
Tankless Water Heater Pricing in Maryland
$3,200 - $5,800 for installation; $180 - $450 for repairs; $150 - $250 for annual descaling
Typical 2026 pricing for tankless water heater installation in Maryland runs $3,200-$5,800, including the unit, labor, permit, and venting. Repairs cost $180-$450. Annual descaling runs $150-$250. The final price depends on gas line size, vent length, and whether you need electrical upgrades. We provide a written quote before any work begins, and we don't charge overtime for emergency calls.
A tankless unit costs more upfront than a tank, but it lasts 20 years instead of 10 and cuts your gas bill by 20-30%. Over two decades, you buy one tankless instead of two tanks and save $2,000-$4,000 in energy costs. That's real value.
01Unit Size and Brand
A 199,000 BTU Navien or Rheem unit costs more than a 150,000 BTU model. Larger units handle more fixtures but require a bigger gas line.
02Gas Line Upgrade
If your home has a 1/2-inch gas line, we may need to upsize to 3/4-inch. That adds $400-$800 but ensures proper performance.
03Venting Requirements
Long vent runs or horizontal termination add cost. We use PVC or stainless steel venting depending on the unit and location.
04Electrical Work
Tankless units need a dedicated 120V circuit. If your panel is full or the outlet is missing, we handle the electrical upgrade.
Proof you can check
Licensed, Certified, and Reviewed
✓
Maryland Master Plumber LicenseMaryland State Board of Plumbing
✓
Maryland Journeyman Plumber LicenseMaryland State Board of Plumbing
✓
Backflow Prevention CertificationMaryland Department of the Environment
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OSHA 30 Safety TrainingOccupational Safety and Health Administration
Customer reviews
What Maryland Homeowners Say
★★★★★
“Our old tank died on a Friday. Maryland Plumbing Pros installed a Navien tankless the next morning. The plumber explained the sizing, pulled the permit, and cleaned up everything. We haven't run out of hot water since. Worth every penny.”
MR
Mike R.Homeowner, Glen Burnie
✓ Verified“
★★★★★
“We'd been putting off descaling for two years. The tech showed us the scale buildup and flushed the unit in about an hour. Our gas bill dropped $30 the next month. We're on the annual plan now.”
SL
Sandra L.Homeowner, Wheaton
✓ Verified★★★★★
“I manage six rentals across Baltimore County. Maryland Plumbing Pros handles all my tankless installs and repairs. They're fast, code-correct, and their pricing is flat. My tenants are happy, which means I'm happy.”
JT
James T.Property Manager, Owings Mills
✓ VerifiedMost installations run $3,200-$5,800 in 2026, including the unit, labor, permits, and venting. Repairs typically cost $180-$450. Annual descaling runs $150-$250. The price depends on gas line size, vent length, and whether you need an electrical upgrade. We provide a written quote before any work begins.
Yes, if you plan to stay in your home five years or more. Maryland's hard water and cold groundwater make tankless maintenance essential, but the 20-year lifespan and 20-30% energy savings offset the higher upfront cost. You also gain endless hot water and reclaim floor space. For rental properties, the durability pays off even faster.
Once a year. Maryland's hard water causes scale to build up inside the heat exchanger, which cuts flow and raises your gas bill. Annual tankless water heater descaling Maryland service removes that scale, checks the flame rod, and keeps your warranty valid. Skipping service can shorten the unit's life by 5-8 years.
Most Maryland single-family homes need a 199,000 BTU unit delivering 9-11 gallons per minute. That handles two showers and a dishwasher at once. Smaller condos may need 150,000 BTU. We calculate your peak demand based on fixtures and incoming water temperature, which runs 50-55°F in Maryland. Sizing too small means cold showers.
Where we deliver this service
Cities We Serve for Tankless Water Heater Services
We deliver tankless water heater services in Maryland across the state, from Glen Burnie to Lexington Park. Our licensed plumbers know the local water conditions, code requirements, and housing stock. Whether you need installation, repair, or annual maintenance, we're ready to help.
Glen BurnieGlen Burnie's older housing stock often needs gas line upgrades for tankless. We handle permits and installs fast, with same-day estimates.View area →WheatonWheaton homeowners deal with hard water that scales up heat exchangers. We install and descale tankless units to keep hot water flowing.View area →Owings MillsOwings Mills families love the endless hot water. We size units for larger households and handle venting through existing chases.View area →Bel Air NorthBel Air North's newer homes often have PEX tubing and adequate gas supply. Installs go quickly, and we pass inspection the first time.View area →LochearnLochearn rowhouses may have 1/2-inch gas lines. We upgrade to 3/4-inch and install tankless units that handle multiple showers.View area →ArnoldArnold's proximity to the bay means humid summers and cold winters. We insulate lines and verify venting to prevent freeze-ups.View area →Maryland CityMaryland City homeowners get fast tankless installation and repair. We stock Navien and Rheem parts on our trucks for same-day fixes.View area →CalvertonCalverton's mix of older and newer homes means varied plumbing. We assess gas capacity and water pressure before recommending a unit.View area →Brooklyn ParkBrooklyn Park residents rely on us for emergency tankless repair. We answer 24/7 and carry common parts for quick fixes.View area →AccokeekAccokeek's larger lots and well water can affect tankless performance. We test water hardness and recommend softeners when needed.View area →Lexington ParkLexington Park homeowners near the naval base need reliable hot water. We install and maintain tankless units that last 20 years.View area →Riviera BeachRiviera Beach's waterfront homes face humidity and salt air. We use corrosion-resistant venting and check units annually.View area →Walker MillWalker Mill residents get same-day estimates and code-correct installs. We pull permits and pass inspections without delays.View area →JessupJessup's industrial and residential mix means varied water demand. We size tankless units for both homes and small businesses.View area →EdgemereEdgemere's older homes often have galvanized pipes. We replace problem sections with PEX tubing before installing tankless.View area →
More services
Related Plumbing Services
Emergency Plumbing ServicesWhen your tankless unit fails at 2 a.m., our emergency plumbers respond fast. We carry common parts for Navien and Rheem units and can often restore hot water the same night.Explore →
Residential Plumbing ServicesTankless installation often pairs with other home plumbing upgrades. We handle everything from leaky faucets to full repipes, so you get one licensed team for the whole job.Explore →
Commercial Plumbing ServicesRestaurants, salons, and gyms in Maryland rely on tankless systems for endless hot water. We size and install commercial-grade units that handle high demand without downtime.Explore →
Plumbing RepairsA tankless heater stresses your gas line and water pressure. If you notice low flow or leaks after installation, our repair team diagnoses and fixes the issue quickly.Explore →
Drain CleaningHard water scale can clog fixtures and drains over time. We use hydro-jetter and drain snake equipment to clear blockages and keep your hot water flowing.Explore →
Sewer Line RepairTankless installs sometimes require rerouting water lines. If we find root intrusion or pipe corrosion during the job, we repair the sewer line before it becomes a bigger problem.Explore →
Sewer Line ReplacementOlder Maryland homes with cast iron or galvanized steel pipes may need sewer line replacement before a tankless upgrade. We handle the full replacement with modern PVC pipe.Explore →
Water Heater InstallationNot ready for tankless? We also install traditional tank water heaters from Bradford White and A.O. Smith. Same licensed team, same code-correct workmanship.Explore → Ready when you are
Get Your Tankless Water Heater Services in Maryland Today
Call (410)886-8838 for a same-day estimate on installation, repair, or descaling. We're licensed, insured, and have served Maryland since 2008. Don't wait for cold showers.
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Request an appointment
Contact Maryland Plumbing Pros
Call (410)886-8838 any time, day or night. Our dispatch line is staffed 24/7, and emergency calls get routed to the nearest on-call crew in your part of Maryland. For non-emergency work, call between 8 a.m. and 6 p.m. weekdays and we will schedule a same-day or next-day visit. You can also email info@marylandplumbingpros.com and we will respond within one business day.
Call anytime(410)886-8838Email the officeinfo@marylandplumbingpros.com
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