RUNNING OUT OF HOT WATER?
Every call answered, any hour.
Call 337-344-3920Lafayette · Youngsville · All of Acadiana
Tankless Water Heaters
THE SHORT ANSWER
A tankless heater makes hot water as you use it, so it does not run out mid-shower and there is no tank in your attic waiting to fail. It costs more up front than a tank, it needs a yearly flush to fight south Louisiana mineral content, and over 2.5 bathrooms usually means two units. Hargrave’s sizes it, prices tank and tankless side by side in person, and installs both.
Both priced
Tank and tankless, in person
4.9 ★★★★★
1,100+ reviews
24/7
Emergency response

CREDENTIALED, NOT JUST CONFIDENT
Awards and certifications you can actually verify.
Every badge here is a third party vouching for us, not a slogan we wrote about ourselves.

Acadiana's Choice 1st Place Winner
1st place three years in a row (2024, 2025 and 2026), voted by the people who live here.

LICENSED LMNGF #9436 · LMP #5401 · INSURED
Certified by ASSE International for backflow prevention assembly testing, certification 68664.

Authorized Independent Provider
Authorized to take plumbing work through The Home Depot Home Services program.

Best of Acadiana, 2017
Voted a Best of Acadiana winner by Times of Acadiana readers in 2017.
What is pushing you toward tankless?
Find your reason below. We install, replace, service and descale gas and electric tankless units, indoors, in garages, in attics and outside, for homes and businesses in Lafayette, Youngsville and across Acadiana.
You keep running out
- Second shower goes cold
- Garden tub empties the tank
- Laundry and a shower do not mix
- Household grew
- More than 2.5 bathrooms
Over 2.5 baths usually means two units
You want the tank gone
- Tank sits in the attic
- Old unit is on borrowed time
- Closet space you want back
- Worried about a ceiling failure
- Rusty water from the tank
No tank up there means no tank to let go
You already have tankless
- Error code on the display
- Cold-water sandwich
- Shuts down under heavy use
- Flow rate has dropped off
- Never been descaled
Scale from hard water is the usual cause
- ★★★★★
They did a great job and were a pleasure to work with.
Julie Christman - ★★★★★
John was AMAZING! So sweet, very knowledgeable. Give him a raise. He's STELLAR! 10 stars. Service side of plumbing is right up his alley.
Madison - ★★★★★
The experience was great! Mr. Colin came same day and effectively fixed my issue.
Christie Charles - ★★★★★
Jacob did an excellent job putting in a swimming pool drain line! It was a tough job hand digging around an existing natural gas line for approximately 60 feet! Thanks Jacob!!
Richard D. Reed - ★★★★★
Zack did a great job! He has done a few services for me and always does a good job and is very personable. Thank you!
Luci Campbell - ★★★★★
Colin (and the company as a whole) was great! He was knowledgeable and assured me throughout the repair.
Grant Delay - ★★★★★
Very hard working and polite.
Craig Little - ★★★★★
Call and scheduling process was very easy. They were able to be on site within 2 hours. Chance was very professional and courteous and provided me with an estimate before and fixed the issue same day.
Tammy Leger - ★★★★★
Delighted with the work, very satisfied, absolutely recommended.
Rosie’ Allain - ★★★★★
Very satisfied, great service
Lar D - ★★★★★
Johnny Johnson was amazing. He was very knowledgeable, professional and polite. I'll call Hargrave's plumbing for future needs and will request Johnny!
Tiffany Gullett - ★★★★★
Company is very responsive, sent technician to our home very promptly. Chance and Jerome were both polite and professional. They serviced our needs quickly!
Meagan - ★★★★★
Kayden was very courteous & thorough. He explained everything in detail & he made sure all was clean & working perfectly before he left. When we need work done in the future we would like him to come back.
C T - ★★★★★
Zach was great at showing and explaining what all was going to be done. Took time to ensure all 3 faults were good and no longer leaking.
Kristina Duhon - ★★★★★
Cordial, on-time, efficient, friendly. Great experience.
malcolm huval ii - ★★★★★
He helped us so much! Worked hard and got the job done in the heat
Alexis Marks - ★★★★★
AJ was excellent, he took time to take care of a difficult clog and a sink leak correctly. Great service and great attitude. Would definitely recommend.
Aaron Dufrane - ★★★★★
Jacob was wonderful!
Sherry Romero - ★★★★★
The two service men who came out were Kaleb and Kaden. Very professional, clean, courteous, and very personable.
June Ducote - ★★★★★
BEST SERVICE EVER!!! Very friendly and knowledgeable and did his job precise didn't let anything get in his way. Top notch service. Zack is the greatest asset to your company.
Renee Morales - ★★★★★
Mr. Johnny is a true professional.
Chase H - ★★★★★
Chance, very professional and knowledgeable. Worked very hard in the heat and didn't stop till he completed.
Shelly Willett - ★★★★★
Chance with Hargrave Plumbing did a great job on our repair. He was extremely professional.
Raylin Massey - ★★★★★
I had a list of plumbing jobs for my home. I called Hargraves plumbing and they were at my house the next day.
Mary Cunningham - ★★★★★
Excellent Service from Start to Finish!
Matthew Brown - ★★★★★
Very professional and hard-working guys! We had two new hot water heaters installed in our very hot attic within 24 hours of requesting a quote. Very reasonable prices and excellent service.
Stacey Mire - ★★★★★
Absolutely fantastic experience.
Farrell Ortego - ★★★★★
I have nothing but good things to say about my experience with Chance S. and the rest of his team at Hargrave's.
Chris Jackson - ★★★★★
Technician Johnny Johnson did an excellent job and left things better than he found them by improving all the lines in and out. Support staff at the shop were excellent to work with!
Alan Broussard - ★★★★★
Mr Johnny came to help us with a tub issue. He was professional and kind.
Chris Cormier - ★★★★★
A definite 5 star experience! Thank you Hargrave's Plumbing. Our technician Zach was a wonder!
Tess Lamb - ★★★★★
I'm so excited and pleased to write this review! My experience with Hargrave's Plumbing was amazing.
Christie Charles - ★★★★★
Thank you Hargrave's Plumbing and Kaleb for the excellent job to replace my 20 year old water heater.
Mark Guilbeau - ★★★★★
Excellent service! We needed a new water heater in our attic. The cost was fair and the owner gave me a discount for same-day install. Highly recommend and will use them again in the future!
Tamara Vincent - ★★★★★
Excellent service! The technicians Luke and Zach were thorough and clearly explained their findings regarding my clogged kitchen sink drain. They provided me with multiple repair options to fix the issue and described each solution, answering all of my questions so that I understood what the repairs entailed and was able to make an informed decision that fit within my budget. Their professionalism and expertise made me feel reassured and comfortable, top notch service and all repairs completed during the same visit. Thank you again Luke, Zach, and Hargrave’s team for taking such good care of me, you’re the best in town!
C N - ★★★★★
Such a wonderful plumbing experience! Fast, reliable and magnificent service! Collin and Chance took care of our delima with confidence and ease. Couldn’t be more pleased with their work and respect for our needs! Thanks Hargrave Plumbing!
Stefni Lotief - ★★★★★
Zack came to McAlister’s and he did a wonderful job! Highly recommend yall ask for him to do the plumbing no problems at all he definitely deserves a raise!!
Scooby Hebert - ★★★★★
Javon was wonderful to work with! He went above and beyond by explaining everything and finding the source of the problems! He provided quotes and advice on moving forward. We will definitely be working with Hargrave’s Plumbing again! Thank you so much!
Tori Thibodeaux - ★★★★★
Zack came out and checked everything. Then quoted cost and came back to the plant and did a quick clean job. Excellent service
Ethel Cantu
Worth it, or not, in your house?
Tank or tankless?
Both are good answers in the right house. We price both in person so you are choosing between two real numbers, not a sales pitch.
Storage tank
Tankless
Hot water
40 or 50 gallons, then you wait for it to recover.
Continuous, as long as demand stays inside what the unit is sized for.
Space
Takes a closet, a garage corner or an attic platform.
Wall mounted. The attic platform goes away.
Up front
Lower install cost, and simpler to swap like for like.
Higher install: gas sizing, venting and sometimes electrical.
Upkeep
Yearly flush to clear sediment out of the bottom.
Yearly descale, and it matters more here than in soft-water places.
Risk in the attic
A failed tank up there becomes a ceiling repair.
No stored water, so there is nothing to dump.
The honest version: if your gas line and vent path both need work, tankless can cost noticeably more to install than the unit itself suggests. We measure that before we quote it, and sometimes the right answer is still a tank.
BOOK ONLINE
Sized before it is quoted · 24/7 emergency response.
Why Acadiana is hard on tankless
Mineral content
Local water scales a heat exchanger faster than the manuals assume. A yearly descale is not optional here, and we offer it as a service.
Gas sizing
A tankless unit asks for far more gas at once than a tank does. Plenty of houses need the line upsized, and that is part of an honest quote, not a surprise on install day.
Attic and outdoor installs
Both are common here, and both need the venting and freeze protection done properly. We install with the roof jack or wall vent the manufacturer requires.
How a tankless install goes
- You bookOnline or by phone, 24/7. We confirm the window with you.
- We size it and check the gasFixture count, bathrooms, gas line capacity and vent route. This is where two-unit jobs get identified.
- You see both pricesTank and tankless, in person, before any work starts. The price you approve is the price you pay.
- Installed, tested, registeredCode-compliant gas, vent and condensate, then we test it, walk you through it and register the warranty for you.
24/7 EMERGENCY · EVERY CALL ANSWERED
No hot water tonight? That is still a same-night call.
The phone is answered at any hour. If your unit is locked out on an error code or dumping water, tell us what the display says and we will come out.
Call 337-344-3920 now →Rinnai
Navien
Takagi
Noritz
Bosch
Eco Smart
Brands we stock and install. Financing available on replacements. Fix it today, pay over time.
BOOK ONLINETankless questions we get every week in Lafayette and Youngsville
Is tankless worth it here?
Often yes: continuous hot water, no tank in the attic and lower standby loss. It costs more up front and it needs descaling with our water. We price both and let you choose.
How many units do I need?
More than 2.5 bathrooms usually means two tankless units or two tanks. We count fixtures and simultaneous demand before quoting, because an undersized unit is the main reason people dislike tankless.
Do I need my gas line upsized?
Sometimes. A tankless unit draws much more gas at once than a tank, so we check the meter and the line size as part of the quote rather than finding out on install day.
What maintenance does it need?
A descale once a year, plus a filter and sensor check. We offer yearly servicing for flushing and upkeep, and it is included in the Assurance Plan.
Tankless installs across Acadiana
RELATED SERVICES
Assurance Plan members go first.
SEE THE ASSURANCE PLAN →Annual water heater flush, priority scheduling, and two inspections a year.
LICENSED LMNGF #9436 · LMP #5401 · INSURED
3138 Johnston St. Lafayette, LA 70503 · 511 Shore Dr Ste 5, Youngsville, LA 70592
3138 Johnston St. Lafayette, LA 70503 · 511 Shore Dr Ste 5, Youngsville, LA 70592


