Written scope
Model number, vent type, and every part
Tankless Water Heater Installation Meridian MS Done Right
Tankless Water Heater Installation Meridian MS means endless hot water without a tank rusting in your garage. We size, vent, and commission Rheem, Rinnai, and Navien units for homes across Lauderdale County, from Downtown Meridian to Northeast Meridian. If your old tank is leaking or your family keeps running out of hot water, call +16015310808 and we'll get a same-day estimate on the board.
- Endless hot water
- Tank removal
- Gas line sizing
- Written service plansClear plan before work
- Careful property protectionFloors, contents and finishes protected
- One point of contactOne local contact
- Prepared local crewsTankless Water Heater Installation
What's Included in a Tankless Installation
Every install we quote includes the parts and labor to get a tankless unit running to code. If your house needs a new gas line, a 240-volt circuit, or a roof vent, we price that up front so there are no surprises on install day.
- Unit and Vent KitWe supply the tankless heater, the manufacturer's vent kit, and the wall bracket. Brands include Rheem, Rinnai, Navien, A.O. Smith, and Takagi. You get the model number in writing before we order.
- Gas or Electrical HookupFor gas units we run the supply line, install a sediment trap, and pressure-test every joint. For electric units we run the dedicated 240-volt circuit, set the breaker, and verify the ground.
- Water Line and ValvesWe cut out the old tank, solder new copper, and install isolation valves, flex connectors, and dielectric unions. The isolation valves let you descale the unit later without shutting off the whole house.
- Safety ComponentsEvery install gets a TPR valve, a drain pan with a routed discharge line, and an expansion tank if your system is closed. These are code items, not upsells, and they protect your floors and your family.
- Permit and InspectionWe pull the City of Meridian plumbing permit, schedule the inspection, and meet the inspector on site. You get the signed-off card for your records and your insurance company.
- Haul-Away and WalkthroughWe drain and remove the old tank, recycle it, and clean up the area. Then we walk you through the filter screen, the temperature setting, and the annual descaling steps before we leave.
Tankless installs for homes
We install wall-mounted tankless units for houses, duplexes, and small rental properties across Meridian. You get hot water that keeps up with the whole family and a floor free of a 400-pound tank.
- Running out of hot water
- Leaking tank in the closet
- High gas bills
- No floor space left
Tankless installs for businesses
We install and service tankless systems for restaurants, salons, and small hotels that can't afford a cold-water morning. You get sized capacity for peak demand and a service schedule that keeps it there.
- RestaurantsPeak demand sizing for dish and hand sinks
- SalonsContinuous hot water for back-to-back washes
- Small hotelsMultiple units staged for morning demand
- Property managersLabeled valves and a descaling schedule
Tankless Water Heater Installation Meridian MS Explained
Tankless Water Heater Installation Meridian MS is the trade of replacing a storage tank with a wall-mounted heat exchanger that fires only when you open a hot tap. We run a dedicated gas line or 240-volt circuit, mount the unit on a rated wall, cut and solder the hot and cold lines, then vent the exhaust through the rim joist or roof. A proper install includes a TPR valve, drain pan, expansion tank, and dielectric unions so the copper and steel never touch directly.
Meridian homes built before 1980 often have 1/2-inch gas lines that starve a 199,000 BTU unit. We measure static and dynamic pressure with a gauge before we quote, because a tankless heater that can't breathe is a callback waiting to happen. If you're comparing on demand water heater installation Meridian MS against another tank, the math usually favors tankless after year four. We also handle tankless water heater replacement Meridian Mississippi when an older unit finally scales shut.
We size the unit to the house, not to the box on the shelf.
What Our Tankless Installation Process Looks Like
Every job follows the same five steps. You'll know what's happening, who's in your house, and when the hot water comes back on.
Phone Sizing
We ask how many bathrooms, whether you have a soaking tub, and what fuel you have. That tells us the flow rate and temperature rise we're designing for. A three-bath home in Northeast Meridian usually needs a 199,000 BTU condensing unit, while a two-bath cottage can run a 160,000 BTU model. You get a ballpark range before anyone drives out.
On-Site Assessment
A technician checks gas meter capacity, pipe diameter, vent path, and available wall space. We use a pressure gauge and an inspection camera to look inside the existing flue and behind the wall. If the gas line needs upsizing from 1/2 to 3/4 inch, we quote that separately and in plain numbers. This visit takes 30 to 45 minutes.
Permit and Materials
We pull the plumbing permit through the City of Meridian and order the unit, vent kit, isolation valves, and drain pan. Most Rheem, Rinnai, and Navien models arrive within two business days. You get a written scope showing the model number, vent type, and every part going on the wall.
Installation Day
We shut off the gas, drain the old tank, and cut it out. The new unit goes up on a rated bracket, the vent penetrates the rim joist with proper clearance, and we solder the supply lines with dielectric unions. A standard swap runs four to six hours; a first-time tankless conversion with a new gas line runs a full day.
Commissioning and Walkthrough
We purge the gas line, set the thermostat to 120 degrees, and run every fixture to confirm flow. A multimeter checks the igniter and flame sensor, and we verify the vent draft with a gauge. Then we walk you through the filter screen, the isolation valves, and how to descale the unit once a year.
Tools and Methods We Use
Pipe wrench and tube cutter
Used to break down the old gas and water connections and cut copper cleanly so every joint solders tight. A clean cut is the difference between a leak-free line and a pinhole that shows up a month later.
Soldering torch and multimeter
The torch makes the copper joints; the multimeter tests igniters, flame sensors, and heating elements on electric units. We verify resistance against the manufacturer's spec before we button up the panel.
Pressure gauge and T&P valve tester
We measure static and dynamic gas pressure to confirm the meter and line can feed the unit. The T&P valve tester confirms the relief valve opens at its rated pressure instead of sticking shut.
Descaling pump and flue brush
The pump circulates a vinegar solution through the heat exchanger to strip mineral scale. The flue brush clears soot and debris from the vent run so draft stays within spec.
Inspection camera
We drop the camera into the old tank and the flue to check for rust, scale, and obstructions. It tells us whether the vent can be reused or needs replacement before we quote the job.
Water heater element wrench and expansion tank gauge
The element wrench removes and torques heating elements on electric units. The expansion tank gauge checks the air charge so the bladder does its job and pressure spikes don't trip the TPR valve.
Uniform Plumbing Code and International Plumbing Code compliance
Every install follows the UPC and IPC for venting, relief valve discharge, drain pans, and gas piping. We pull the City of Meridian permit and meet the inspector on site so the work is signed off, not flagged.
Manufacturer certification on Rheem, Rinnai, and Navien
Our technicians are trained on the specific venting, gas pressure, and clearance requirements for each brand. That means we use the right vent kit, set the correct dip switch configuration, and keep your warranty intact.
When Tankless Makes Sense in Meridian
A growing family in Northeast Meridian with three bathrooms and a soaking tub keeps running the 50-gallon tank dry.
We size a 199,000 BTU condensing unit, upsize the gas line to 3/4 inch, and vent through the rim joist. The install takes one day and includes isolation valves for easy descaling. Two showers and the dishwasher can run at once without a temperature drop. The family stops scheduling showers around the tank.
A 1940s cottage in Old Town Meridian has a tank in a closet so tight you can't close the door.
We remove the tank, mount a compact unit on the exterior wall, and run the vent and gas line through the band joist. The closet becomes usable storage again. The homeowner gains a full closet back and gets hot water in under 10 seconds at the kitchen tap.
A rental property manager in Century Farm is tired of replacing tanks every eight years between tenants.
We install a tankless unit with a recirculation pump on a timer, label every valve, and leave a descaling schedule taped inside the access panel. The unit should last 18 to 20 years with annual service, cutting replacement costs and hot water complaints in half.
A homeowner near Meridian Village is building an addition with a new master bath and needs more hot water capacity.
Rather than add a second tank, we install one tankless unit sized for the whole house and run a dedicated line to the new bath. The vent ties into the existing chase. The addition gets instant hot water without a second heater, and the original system stays balanced.
How Tankless Installation Runs in Meridian
Meridian sits in Lauderdale County with a climate that swings from humid 95-degree summers to occasional hard freezes in January. That matters for tankless because a unit mounted in an unconditioned garage or attic has to be freeze-protected, and the condensate line from a high-efficiency unit can ice up if it's not pitched and insulated. Our water also carries enough mineral content that scale builds inside a heat exchanger within two to three years if you skip descaling. We recommend an annual flush with a descaling pump, and we set the unit to 120 degrees to slow mineral precipitation. Older homes in Old Town Meridian and Downtown often have 1/2-inch gas lines and undersized vents, so we measure before we quote. If you're comparing on demand water heater installation Meridian MS options, ask any contractor for a dynamic gas pressure reading and a vent calculation. We provide both in writing, and we pull the City of Meridian permit so the install passes inspection the first time.
- Downtown MeridianHistoric buildings with tight mechanical closets and 1/2-inch gas lines. We often mount the unit outside or in the attic and upsize the gas run to 3/4 inch.
- Northeast MeridianLarger homes with three or more baths and high simultaneous demand. We size 199,000 BTU condensing units and add a recirculation pump for fast tap delivery.
- Century FarmNewer construction with PEX plumbing and accessible attics. Installs here are straightforward, and we usually reuse the existing vent chase.
- The IslandsLarger lots where units often go in the garage. We add freeze protection and insulate the condensate line for the occasional hard freeze.
- Old Town MeridianPier-and-beam homes with crawlspace access. We run gas and water lines underneath and vent through the rim joist to keep the exterior clean.
- Hard water with high mineral contentScale builds on the heat exchanger and reduces flow within two to three years. Annual descaling with a pump and vinegar solution keeps the unit at full capacity and protects the warranty.
From problem to finished result.
Three-Bath Ranch in Northeast Meridian
BeforeA 50-gallon gas tank from 2011 was rusting at the base and couldn't keep up with two showers and a dishwasher. The family was staggering morning routines and the gas bill ran $72 a month.
AfterWe installed a 199,000 BTU Rinnai condensing unit, upsized the gas line to 3/4 inch, and vented through the rim joist. Hot water now holds steady at 120 degrees through three simultaneous fixtures, and the gas bill dropped to $51 the next month.
Flush the heat exchanger once a year with a descaling pump, clean the filter screen every six months, and keep the area around the unit clear. The isolation valves make the annual flush a 30-minute job.
Tight Closet in an Old Town Cottage
BeforeA 40-gallon tank sat in a closet so shallow the door wouldn't close. The tank was 11 years old, the anode rod was gone, and the bottom was weeping rust onto the wood floor.
AfterWe removed the tank, mounted a compact Navien unit on the exterior wall, and ran the vent and gas line through the band joist. The closet is now usable storage, and the kitchen tap gets hot water in eight seconds.
Check the exterior vent terminal each season for wasp nests and debris, and descale the unit every 12 months. The outdoor mount means we also check the freeze protection before the first cold snap.
Rental Duplex in Century Farm
BeforeTwo 40-gallon tanks, one per unit, were replaced every eight years. The property manager was fielding hot water complaints and paying for emergency calls between tenants.
AfterWe installed one tankless unit per side with a recirculation pump on a timer and labeled every isolation valve. The units should run 18 to 20 years with annual service, and hot water complaints dropped to zero over the following year.
We service both units once a year with a descaling pump and check the recirculation pump timer. Tenants get a one-page sheet showing the filter screen location and the temperature setting.
Problems a Tankless Install Solves for Good
Most people call us because something already went wrong. Here are the four problems that push Meridian homeowners toward tankless.
Running out of hot water every morning
A correctly sized tankless unit heats water as it flows, so the supply never ends. We calculate your peak demand in gallons per minute and match the unit to it, then set the temperature at 120 degrees for safe, consistent hot water. A 40-gallon tank gives you about 12 minutes of shower before the water turns cold. That means staggered schedules, cold showers, and a house that never feels caught up.
A leaking tank rusting through the floor
We cut out the failing tank before it bursts, install a wall-mounted unit with a drain pan and routed discharge line, and pressure-test every connection. You get a dry floor and a heater that can't flood the room. Once a tank bottom rusts, it can let go completely and dump 50 gallons into your garage or closet. That's a flooring repair, a mold problem, and an insurance claim you don't want.
High gas bills from standby heat loss
Tankless units fire only when a hot tap opens. There's no standing water to keep warm, so you stop paying for heat you never use. Most Meridian families see the difference on the second or third gas bill. A storage tank keeps 40 to 50 gallons hot 24 hours a day, even when nobody's home. That standby loss can be 20 to 30 percent of your water-heating bill every month.
No space left in the garage or closet
A tankless unit hangs on the wall and takes about the footprint of a carry-on bag. We mount it high enough to clear storage, keep the service valves accessible, and give you the floor back. A tank and its stand eat a 3-foot square of floor space, and in older Meridian homes that's the only spot for bikes, tools, or a freezer. The tank also blocks access to the wall behind it.
Hot water that never runs out, in a space a tank can't fit.
Endless Hot Water
A tankless unit heats water as it flows, so the third shower doesn't run cold. A 199,000 BTU model delivers roughly 4.5 gallons per minute at a 45-degree rise, enough for two showers and a dishwasher at once. No recovery time, no waiting 30 minutes between loads.
Lower Gas Bills
You stop paying to keep 40 or 50 gallons hot around the clock. Most Meridian families see a 20 to 30 percent drop in water-heating gas use, which on a $60 monthly bill is real money. The unit idles at a few watts instead of cycling a burner all night.
Frees Up Floor Space
A tankless heater hangs on the wall and takes about the footprint of a carry-on suitcase. That's a full closet or garage corner back in homes from Meridian Village to Century Farm. It also means no 400-pound tank sitting on a stand where a car could back into it.
Lasts Twice as Long
Storage tanks average 8 to 12 years before the anode rod corrodes through and the bottom rusts out. Tankless units run 18 to 20 years with annual descaling, because there's no standing water eating the steel. That's one replacement instead of two.
What Tankless Installation Costs
Typical 2026 pricing in Meridian runs $2,800 to $4,500 for a complete tankless install, including the unit, vent kit, permit, and labor. A simple swap where the gas line and vent already exist lands near the low end. If we need to upsize the gas line, run a new 240-volt circuit, or add a recirculation pump, expect the higher end or a bit above. We give you the full number in writing before we start, and there's no charge for the estimate. If you want a Meridian tankless water heater company that quotes the whole job, not just the box, call us.
What your estimate is based on
- Unit size and brandA 160,000 BTU unit for a two-bath home costs less than a 199,000 BTU condensing model for a four-bath house. Rheem, Rinnai, Navien, and Noritz all price differently, and condensing units cost more but capture more heat.
- Gas line upsizingIf your existing 1/2-inch line can't feed the unit, we run 3/4-inch black iron or CSST from the meter. That adds $600 to $1,200 depending on the run length and how many fittings are needed.
- Vent configurationA short horizontal vent through the rim joist is the cheapest option. A vertical roof vent or a long concentric run adds material and labor, and a stainless steel liner for an existing chimney costs more.
- Electrical workGas tankless units need a 120-volt outlet for the controls, and electric units need a dedicated 240-volt circuit. If there's no outlet near the install spot, we run one, which adds $250 to $500.
- Add-onsA recirculation pump for instant hot water runs $500 to $900 installed. A water softener or a descaling valve kit adds cost but protects the heat exchanger and extends the unit's life.
- Permit and inspectionThe City of Meridian plumbing permit and inspection fee is included in our quote. It's a small line item, but skipping it can void your insurance and complicate a home sale.
$2,800 - $4,500 depending on scope A tankless unit costs more up front than a tank, but it lasts 18 to 20 years instead of 10 and cuts water-heating gas use by 20 to 30 percent. For most Meridian families, the savings and the second replacement you avoid cover the difference.
What you receive
Clear records you can keep and share.
Permit card
City of Meridian inspection signed off
Descaling guide
Filter screen steps and annual flush schedule
What to know before you go tankless
Tankless units are sized by flow rate and temperature rise, not by tank gallons. A unit that's undersized will short-cycle and never keep up, no matter how much you paid for it.
Flow rate matters
We add up every fixture you might run at once to get gallons per minute. A three-bath home usually needs 8 to 10 GPM at a 45-degree rise.
Gas line size
A high-BTU unit needs enough gas volume to fire at full capacity. We measure dynamic pressure and upsize the line when the reading drops below spec.
Vent path
The vent has to clear the unit's exhaust and pull combustion air from outside. A bad vent path causes backdrafting, which is a carbon monoxide risk.
One local team. A lot of ground covered.
- Downtown Meridian
- Old Town Meridian
- Northeast Meridian
- Southwest Meridian
- Southeast Meridian
- Northwest Meridian
- Meridian Village
- Paramount
- Century Farm
- Tuscany
- The Islands
- Spurwing
- Cherry Lane
- Lochsa Falls
Not listed? Call and we will tell you straight away. +16015310808
What Meridian Homeowners Say
Most tankless installs in Meridian run $2,800 to $4,500 in 2026, including the unit, vent kit, permit, and labor. A simple swap where the gas line and vent already exist lands near the low end. If we have to upsize the gas line from 1/2 to 3/4 inch or run a new 240-volt circuit, add $600 to $1,200. We give you the full number before we start.
Yes, if you plan to stay in the house more than five years. A tankless unit costs about $1,500 more up front than a 50-gallon tank, but it lasts 18 to 20 years instead of 10 and cuts water-heating gas use by 20 to 30 percent. For a family of four, that's roughly $180 a year in savings, plus you never run out of hot water.
A standard replacement takes four to six hours. A first-time conversion from a tank to a wall-mounted unit runs six to eight hours, and if we need a new gas line or a roof vent, plan on a full day. We schedule most installs on a weekday morning so you have hot water back by dinner.
Yes. The City of Meridian requires a plumbing permit for any water heater replacement or new installation, and the work has to meet the International Plumbing Code. We pull the permit, meet the inspector, and hand you the signed-off card. Doing it without a permit can void your homeowner's insurance and complicate a future sale.
Get Your Tankless Water Heater Installation Meridian MS Quote
Call +16015310808 and we'll size the right unit for your house, pull the permit, and install it to code. Same-day estimates across Meridian and Lauderdale County. No charge to look and quote.
Call Meridian Water Heater Pros
Reach us at +16015310808 and you will talk to someone who knows water heaters, not a script. We book same-day windows for most of Meridian and keep the line open for emergency leaks. If you are outside the usual ZIP codes, call anyway and we will tell you straight whether we can get to you.