What happens if a water heater is not vented properly?

• <div><p>If your system is not vented properly, you could experience what’s called backdrafting. Backdrafting is when your ventilation system isn’t working as it should, and instead of releasing gases outside, they get trapped inside your home. </p><p>Gas and propane water heaters create a few types of combustion gases, but the most dangerous is carbon monoxide. If there’s too much build-up of these gases inside your home, it can lead to carbon monoxide poisoning.</p></div>

Get matched with top water heater pros in Suwanee, GA

There are 30 highly-rated local water heater pros.

TRUSTED BY SUWANEE, GA HOMEOWNERS

4.8
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179
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Verified Reviews for Water Heater Service pros in Suwanee, GA

*The Angi rating for Water Heater Service companies in Suwanee, GA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Water Heater Service needs.

*The HomeAdvisor rating for Water Heater Service companies in Suwanee, GA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Water Heater Service needs.

Last update on October 05, 2025

Reviewed in June 2025
John Jetter Plumbing has been able to locate the source of an invisible leak - a leak which had no visible signs except for water meter reading - very quickly and their price was very competitive. JOHN THANK YOU THANK YOU VERY MUCH !
John Jetter Plumbing
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Reviewed in April 2025
I highly recommend Papas Plumbing! Jimmy did a great job! He's done 3 separate jobs for me and I couldn't be more pleased!
Papa's Plumbing
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Reviewed in March 2025
Absolutely incredible service in a timely manner. I cannot thank Russ enough for the one on one service and being HONEST. I’ve had him out to do a complete ac system replaced and now water heater. Thanks for always being fair and getting the job done right. Keep it up! Will W
Destin Air Conditioning & Refrigeration
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Reviewed in January 2025
I used Greenlee to replace my water heater. They replied to my inquiry for service very quickly, even though it was after normal business hours. They were responsive and professional assisting me in determining the best solution for me. They arrived quickly and on time. Their work was fast and...
Greenlee Plumbing Inc
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Reviewed in September 2007
I had this unit installed in my home because it only heats water when you want it. You get a rebate from taxes because it s an energy saver. This company is wonderful. They installed this unit, and they also do the regular check up in my heating and air conditioner unit. They are very punctual.
Shumate Air Conditioning & Heating
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Find Water heater pros in Suwanee

Keep Smiling Plumbing & Electric

Keep Smiling Plumbing & Electric

Customers say: Super punctual

1358 local quotes requested

40 years of experience

Keep Smiling Plumbing Electric Heating and Cooling is a family-owned, family-operated, full-service plumbing electric and HVAC business, serving Gwinnett County, Georgia. We are Master Plumbers and members of the Plumbing & Mechanical Association of Georgia. Keep Smiling Plumbing & Electric is there when you need us, ready to take care of any problem that you may have with your plumbing or electrical systems. We also have available a full line of quality replacement products if you want to upgrade or update.

"They told us "Our dispatch fee to come out is $39 and we waive that towards any work or repairs, including diagnostics." The electrician went to check and stayed at the property for less than 5 mins after confirmation to do full diagnostic of the electrical system. I don't think less than 5 mins is enough to run a full diagnostic and later on advise to upgrade the whole panel."

John P on May 2025

"They told us "Our dispatch fee to come out is $39 and we waive that towards any work or repairs, including diagnostics." The electrician went to check and stayed at the property for less than 5 mins after confirmation to do full diagnostic of the electrical system. I don't think less than 5 mins is enough to run a full diagnostic and later on advise to upgrade the whole panel."

John P on May 2025

Rooter Johnson Plumbing

4.96(

)

•Approved Pro

Rooter Johnson Plumbing

4.96(

)

•Approved Pro

Customers say: Quick response

Recommended by 100% of Angi customers

Recommended by 100% of HomeAdvisor customers

106 local quotes requested

Rooter Johnson Plumbing provides same day repairs. We are experienced and licensed plumbers based in Atlanta, GA and servicing all surrounding areas. We provide a fast, efficient and high-quality repair and installation service with affordable pricing. Give us a call or click for an estimate today!

"They were everything and more. Very swift on their diagnosis. Swift repair. Great troubleshooting skills. Great customer service and very amenable and friendly. I will use them on other plumbing projects as well and recommend them to others. Price was within plumbing rates as well. Great work performed."

John H on July 2025

"They were everything and more. Very swift on their diagnosis. Swift repair. Great troubleshooting skills. Great customer service and very amenable and friendly. I will use them on other plumbing projects as well and recommend them to others. Price was within plumbing rates as well. Great work performed."

John H on July 2025

Greenlee Plumbing Inc

Greenlee Plumbing Inc

Customers say: Quality work

Recommended by 96% of Angi customers

193 local quotes requested

Locally owned & operated. 100% satisfaction is the one thing we strive for. Our technicians have over 10 years of experience in the field and are ready to serve you. Our techs are equipped with the latest and most up to date tools in the industry to make sure we do the job right on the first attempt. Call us at 678-386-7513 address - 4336 East Hall rd Gainesville, ga 30507

"We were very satisfied with the service and appreciate their investigation into our issue."

Jesse D on April 2025

"We were very satisfied with the service and appreciate their investigation into our issue."

Jesse D on April 2025

Roto-Rooter Plumbing & Water Cleanup

Roto-Rooter Plumbing & Water Cleanup

90 years of experience

Roto-Rooter is a fully licensed and insured plumbing company providing 24/7 plumbing services, drain cleaning, and water damage cleanup. More people depend on Roto-Rooter than any other plumbing company in North America.

Casteel Heating, Cooling, Plumbing & Electrical

Casteel Heating, Cooling, Plumbing & Electrical

Customers say: Super punctual

Recommended by 90% of Angi customers

363 local quotes requested

At Casteel Heating, Cooling, Plumbing and Electrical, we provide world-class service to our customers, just as we have since 1987. Founded by Jan and Bob Casteel, our company was built on honesty and customer-focused care. To this day, we offer our Amazing Care Guarantee: We’ll take amazing care of you or we’ll refund your service call fee. Our expert team of plumbers, electricians, HVAC technicians, and system design managers performs top-quality repairs and installations while ensuring you are completely satisfied with your entire customer service. Because we offer so many services under one roof, you’ll save time and money by making one phone call to Casteel. Formerly: Knight Air Conditioning and Heating Company

"Thumbs up for the construction at my residence, a three story elevator shaft"

Diana D on October 2024

"Thumbs up for the construction at my residence, a three story elevator shaft"

Diana D on October 2024

JMJ Plumbing

JMJ Plumbing

Customers say: Quick response

Recommended by 100% of Angi customers

24 local quotes requested

Honest Dependable Plumbing We are dedicated to providing our clients with the very best in service, installation, and repair for all phases of your plumbing needs. We specialize in a variety of residential and commercial services, and take pride in the attention to detail put into each of the projects we are involved with. We are known for our quality work and the integrity of our business. We look forward to building long-term relationships with our clients, and guarantee your satisfaction. http://www.jmjplumbing.com

"They have done an excellent job."

Debra N on July 2023

"They have done an excellent job."

Debra N on July 2023

American Service Specialists

American Service Specialists

Customers say: Quality work

Recommended by 92% of Angi customers

29 local quotes requested

American Service Specialists is your go-to for all your plumbing and general contracting needs in Atlanta. Our team of experts is dedicated to providing top-notch service and ensuring your home projects are completed to perfection. Contact us today for all your plumbing and contracting needs!

"This company stands behind their work I highly recommend them! We recently had our hot water tank replaced with a national brand; however, within 6 months the unit was totally out. We called them they showed up immediately and after it was determined that the defective part would have to be ordered and we would be without hot water for two additional days without hesitation they picked up a new tank replaced it no questions asked! Thanks, Carl, for all your professionalism explaining everything you were doing every step of the way."

Michelle P on February 2021

"This company stands behind their work I highly recommend them! We recently had our hot water tank replaced with a national brand; however, within 6 months the unit was totally out. We called them they showed up immediately and after it was determined that the defective part would have to be ordered and we would be without hot water for two additional days without hesitation they picked up a new tank replaced it no questions asked! Thanks, Carl, for all your professionalism explaining everything you were doing every step of the way."

Michelle P on February 2021

Ace Hardware Home Services

Ace Hardware Home Services

Customers say: Quick response

42 local quotes requested

24 years of experience

Backed by the name you know and trust, Ace Hardware Home Services delivers expert plumbing, heating, and cooling solutions throughout Atlanta and North Georgia. We’re proud to be 'bringing helpful to the home' with our Red Bow Promise: quality craftsmanship you can see, friendly service you can experience, and a pledge you can trust—your satisfaction is guaranteed, or we’ll make it right. Whether you need a water heater replacement, drain cleaning, leak repair, toilet or faucet installation, or help with a major plumbing issue, you can count on us for the same reliable, professional service your find at your local Ace Hardware store. Contact us today—we’re here to help!

"Great customer service"

Yulando T on November 2023

"Great customer service"

Yulando T on November 2023

Roto-Rooter Plumbing & Water Cleanup

6025 Northbelt Pkwy NW B

Roto-Rooter Plumbing & Water Cleanup

6025 Northbelt Pkwy NW B

Customers say: Quick response

339 local quotes requested

88 years of experience

Roto-Rooter is America's Largest Plumbing and Drain Cleanng Company. We offer 24 hour services with no overtime or after hour charges. We also offer convenient finance options

"BUYER BEWARE! Had a pipe leak within my wall. Caught it fairly early with minimum damage. The Roto Rooter rep Brian came out and inspected and said I needed water mitigation based off the moisture in my walls. When I say the leak wasn't that bad, it really wasn't! He stated that my insurance company would cover it all and that he deals with my particular company all the time and not to worry. I obviously was taken back by the cost of almost 4k! Fast forward, my insurance company are questioning duplicate charges and Roto-Rooter is saying I owe almost 3k or a lien will be placed on my property! This whole water mitigation is a scam and the salesman did not tell the truth. They should have picked up their fans a lot earlier than they did. I'm sure they were trying to milk all the money they could. Over 5k for a bunch of fans in my home. I WILL NEVER REFER ANYONE TO THIS PLACE! Contacting my lawyer and will have my day in court if necessary. BUNCH OF SCAM ARTISTS IF YOU ASK ME!"

Deanna M on February 2022

Roto-Rooter is America's Largest Plumbing and Drain Cleanng Company. We offer 24 hour services with no overtime or after hour charges. We also offer convenient finance options

"BUYER BEWARE! Had a pipe leak within my wall. Caught it fairly early with minimum damage. The Roto Rooter rep Brian came out and inspected and said I needed water mitigation based off the moisture in my walls. When I say the leak wasn't that bad, it really wasn't! He stated that my insurance company would cover it all and that he deals with my particular company all the time and not to worry. I obviously was taken back by the cost of almost 4k! Fast forward, my insurance company are questioning duplicate charges and Roto-Rooter is saying I owe almost 3k or a lien will be placed on my property! This whole water mitigation is a scam and the salesman did not tell the truth. They should have picked up their fans a lot earlier than they did. I'm sure they were trying to milk all the money they could. Over 5k for a bunch of fans in my home. I WILL NEVER REFER ANYONE TO THIS PLACE! Contacting my lawyer and will have my day in court if necessary. BUNCH OF SCAM ARTISTS IF YOU ASK ME!"

Deanna M on February 2022

Estes Services - HVAC Plumbing & Electrical

Estes Services - HVAC Plumbing & Electrical

Customers say: Super punctual

300 local quotes requested

76 years of experience

Estes Services is the leading choice for home comfort in the Atlanta area. Three generations family-owned and operated since 1949. We provide innovative solutions to everyday heating, cooling, plumbing, and electrical needs by bringing you the most energy-efficient products on the market today. No subs. Charges a flat rate. Free estimates for HVAC system replacements. Emergency service available. Additional phones - (404) 329-7440 - Commercial service, 404-366-9620 - residential service. Additional e-mails - [email protected], [email protected].

"They came out and resolved my plumbing issue on the same day. Very courteous scheduler and technician was even better."

Terrance D on April 2025

"They came out and resolved my plumbing issue on the same day. Very courteous scheduler and technician was even better."

Terrance D on April 2025

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Water Heaters questions, answered by experts

If your system is not vented properly, you could experience what’s called backdrafting. Backdrafting is when your ventilation system isn’t working as it should, and instead of releasing gases outside, they get trapped inside your home.

Gas and propane water heaters create a few types of combustion gases, but the most dangerous is carbon monoxide. If there’s too much build-up of these gases inside your home, it can lead to carbon monoxide poisoning.

Often, the first issue you might encounter is a lack or loss of power—this could be caused by a tripped switch or a failed heating element. If your hot water is not producing enough power and its size is not the issue, you might need to replace one of its heating elements. A leaking water heater could be caused by tank erosion.

Due to the high temperature, using stainless steel vent pipes for your tankless water heater’s exhaust vent is best. Also, it is safe to use a flexible vent duct as the exhaust fan. If installing the exhaust fan yourself, make sure you are using heat-resistant silicon to connect the exhaust vent and the duct on your water heater.

A thermocouple is a pretty simple device. It simply tells the control valve if heat is present. Most water heaters can use a universal thermocouple, provided it's the correct length. Getting one that's long enough for your appliance is crucial for success. However, some water heater models require model-specific thermocouples, which is why it's essential to take your existing one to the store to find the right match.

The size needed for your expansion tank is determined by the size of your home's water heater. Expansion tanks are available in 2-gallon and 4.5-gallon sizes. A 2-gallon tank will be appropriate for water heaters up to 50 gallons. An adequately sized tank should have a volume that equals 2% to 5% of the water volume within the system. A plumber can evaluate your home's water pressure, water heater size, and other factors to provide suggestions for picking out the best expansion tank.

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The Suwanee, GA homeowners’ guide to water heater services

From average costs to expert advice, get all the answers you need to get your job done.

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Testing a water heater thermostat starts with shutting off the power and using a multimeter. Follow this guide on how to test your water heater thermostat.
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Learning how to change the temperature on your water heater takes just a few minutes and the help of a screwdriver. Find out how easy it really is in this guide.
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If your water heater is getting warm but not hot, a faulty thermostat, sediment, or more could be to blame. Learn how to spot and solve the problem of a water heater that’s not hot enough.