Planning an upgrade
You want to understand how tankless equipment may fit the home.
Tankless Water Heaters
Considering tankless hot water? Start with the home’s real requirements.
Tankless systems heat water on demand and require careful sizing, utility, venting, and installation planning. Duckett helps homeowners across the Upstate evaluate, service, and replace residential systems.
Already have a tankless system with no hot water? Call Duckett for service.
Compact equipment. Whole-home planning.Across Upstate South Carolina
LocalFamily-owned & operated
25+Years combined experience
24/7Emergency plumbing service
ClearStraightforward pricing
★★★★★
“Will and Nate was very amazing ! They did a great job I definitely recommend them. Very good people and did a very good job.”
Lataviana OutingGoogle Reviewer · 5 months ago★★★★★
“Nate was super respectful and helpful on fixing our pressure reducing valve. Would recommend him to do future jobs.”
Karla KiddGoogle Reviewer · 5 months ago★★★★★
“Great work! 10/10 recommended. They came in, respectful, did the job in a timely manner, extremely fair priced, cleaned up the site and was out of our hair in great time. Thankful for my new well setup!”
★★★★★
“Will and Nate were.so knowledgeable and quickly assessed and diagnosed our issue with our water pressure. In addition, they provided helpful advice for troubleshooting should future issues surface. They were timely and professional and the prices were reasonable. We will call on them for future services.”
★★★★★
“These guys are awesome. I called and they were on it the next day. We had a water line installed from home down to dock, had a sewer leak, a toilet running, a hot water heater installed and low water pressure. They repaired everything. All the employees were so kind and done more that what they were supposed to do. I highly recommend this company to do a great job.”
★★★★★
“Nate an Kevin came out last month and did an amazing job replacing my well setup. They was here fairly quick and got the job done same day. Definitely recommend them for any an all plumbing aspects.”
★★★★★
“Called for someone to come out to take a look at leak under my sidewalk next to my house/front door. Two gentleman came out on time, quickly diagnosed the problem, and gave me information about the fix.”
★★★★★
“Service was great! The plumber was extremely helpful and courteous. He fixed my issue quickly and was very respectful of my time constraints with another appointment. I appreciate the help!”
Review 1 of 8: Lataviana Outing
Recognize the change
When homeowners ask about tankless systems.
Some are planning an upgrade. Others already have a tankless unit that needs service or replacement.
Replacing an older unit
The current tankless system has failed, aged, or no longer meets demand.
Hot water is inconsistent
An existing system changes temperature, shuts down, or displays errors.
Space and capacity questions
You need help comparing equipment footprint and household hot-water use.
Existing tankless unit not heating? Call Duckett.
(864) 209-9360Share the symptoms and any visible error code without opening the unit.
What we can help with
Match the system
to the home around it.
Tankless planning should account for demand, incoming water conditions, energy supply, venting, drainage, and a serviceable installation location.
Tankless system assessment
Review the current or proposed application and household hot-water needs.
Sizing considerations
Account for expected simultaneous use and incoming water conditions.
Utility and venting review
Consider gas, electrical, combustion-air, and venting requirements where applicable.
Tankless service
Diagnose performance problems on existing residential units.
Installation or replacement
Plan the equipment and connection work supported by the site conditions.
On-demand hot water
Tankless performance depends
on the complete installation.
The unit, utilities, water quality, venting, condensate handling, and household demand all influence performance.
Service and controls
Error history, flow, temperature, and system conditions help guide diagnosis.
Installation details
Connections and clearances matter as much as the equipment selection.
What to expect
From tankless question to a practical plan.
Describe the hot-water problem
Tell us what the system is doing, when it started, and whether you have seen water around the unit.
Assess the system
A technician reviews the existing system or installation conditions and explains repair, replacement, or upgrade considerations.
Review the next step
Understand the proposed work and pricing before deciding how to move forward.
Common related problems
Tankless questions
reach beyond the unit.
Tell us whether you are exploring a new system or solving a problem with equipment already installed.
Talk to Duckett
Tankless versus tank
The right choice depends on demand, priorities, available utilities, space, and installation conditions.
Hot-water demand
Sizing should consider how many fixtures may need hot water at the same time.
Gas and electrical requirements
Available utility capacity may influence the equipment and scope.
Venting and condensate
Applicable systems need suitable venting and condensate handling.
Maintenance needs
Water conditions and manufacturer guidance affect ongoing service needs.
Existing-unit repair
A tankless fault should be diagnosed before replacement is assumed.
Why Duckett
Local people.
Straightforward help.
Duckett is family-owned and operated, with more than 25 years of combined plumbing experience. The team approaches tankless systems as complete installations and explains the practical options without overselling one solution.
Family-owned & operatedStraightforward pricing24/7 emergency plumbing
Request Service Google Reviews
Customer reviews
What customers remember.
Verified customer feedback from Duckett Plumbing’s published website and supplied Google Business Profile material.
★★★★★
“Will and Nate was very amazing ! They did a great job I definitely recommend them. Very good people and did a very good job.”
Lataviana OutingGoogle Reviewer · 5 months ago★★★★★
“Nate was super respectful and helpful on fixing our pressure reducing valve. Would recommend him to do future jobs.”
Karla KiddGoogle Reviewer · 5 months ago★★★★★
“Great work! 10/10 recommended. They came in, respectful, did the job in a timely manner, extremely fair priced, cleaned up the site and was out of our hair in great time. Thankful for my new well setup!”
★★★★★
“Will and Nate were.so knowledgeable and quickly assessed and diagnosed our issue with our water pressure. In addition, they provided helpful advice for troubleshooting should future issues surface. They were timely and professional and the prices were reasonable. We will call on them for future services.”
★★★★★
“These guys are awesome. I called and they were on it the next day. We had a water line installed from home down to dock, had a sewer leak, a toilet running, a hot water heater installed and low water pressure. They repaired everything. All the employees were so kind and done more that what they were supposed to do. I highly recommend this company to do a great job.”
★★★★★
“Nate an Kevin came out last month and did an amazing job replacing my well setup. They was here fairly quick and got the job done same day. Definitely recommend them for any an all plumbing aspects.”
★★★★★
“Called for someone to come out to take a look at leak under my sidewalk next to my house/front door. Two gentleman came out on time, quickly diagnosed the problem, and gave me information about the fix.”
★★★★★
“Service was great! The plumber was extremely helpful and courteous. He fixed my issue quickly and was very respectful of my time constraints with another appointment. I appreciate the help!”
Review 1 of 8: Lataviana Outing
Areas we cover
Based in Greenville. Working across the Upstate.
Based in Greenville, Duckett serves homeowners across a wide network of Upstate South Carolina communities.
Check availability by phoneGreenville
Anderson
Easley
Greer
Mauldin
Seneca
Taylors
Simpsonville
Spartanburg
Laurens
Greenwood
Clemson
Tankless Water Heaters
Tell us what you want from the system.
Share whether you are considering tankless, replacing an existing unit, or troubleshooting one already installed.
Call Duckett(864) 209-9360