Never run out of hot water again. Holy City Plumbing provides expert tankless water heater installation, repair, and maintenance services throughout Mount Pleasant and Charleston, SC. Our licensed plumbers specialize in on-demand water heating systems that deliver endless hot water, significant energy savings, and a compact design that frees up valuable space in your home.
Whether you're upgrading from a traditional tank water heater or installing a tankless system in new construction, we handle every aspect of the installation—from proper sizing and gas line modifications to venting and code compliance.
Why Choose a Tankless Water Heater?
Endless Hot Water
Tankless water heaters heat water on demand, so you'll never run out during long showers or when multiple people need hot water at the same time. Perfect for growing families or homes with high hot water demands.
Lower Energy Bills
Because tankless systems only heat water when you need it, they're up to 30% more energy efficient than traditional tank water heaters. No more paying to keep 40-50 gallons of water hot 24/7.
Space-Saving Design
Wall-mounted tankless units are compact and take up minimal space compared to bulky traditional water heaters. Free up your utility room, basement, or garage for storage or other uses.
Longer Lifespan
Tankless water heaters typically last 20+ years with proper maintenance—nearly twice as long as traditional tank systems. That means fewer replacements and better long-term value.
Better for Your Home
No storage tank means no risk of catastrophic tank failures that can flood your home with 40-50 gallons of water. Tankless systems are safer and cause less potential water damage.
Our Tankless Water Heater Services
Professional Installation
We properly size your tankless system based on your household's hot water needs, ensuring you have adequate capacity for simultaneous use. Our installation includes gas line upgrades if needed, proper venting, electrical connections, and full code compliance.
Expert Repairs
Our technicians diagnose and repair all tankless water heater issues including flow sensor problems, heat exchanger failures, ignition issues, error codes, and control board malfunctions. We service all major brands.
Annual Maintenance
Tankless water heaters require annual descaling and flushing to remove mineral buildup—especially important in areas with hard water. Our maintenance service keeps your system running efficiently and extends its lifespan.
System Upgrades
Ready to make the switch? We'll help you transition from your old tank water heater to a modern tankless system, handling everything from removal and disposal of your old unit to complete installation of your new tankless water heater.
Gas Line Modifications
Tankless water heaters often require larger gas lines than traditional tank systems. We assess your existing gas supply and upgrade lines as needed to ensure proper operation and safety.
Types of Tankless Systems We Install
- Gas Tankless Water Heaters – Natural gas and propane on-demand systems for whole-house applications
- Electric Tankless Units – Point-of-use and whole-house electric systems for smaller applications
- Condensing Tankless Models – High-efficiency gas units (up to 98% efficient) with advanced venting options
- Non-Condensing Systems – Standard efficiency tankless water heaters for budget-conscious homeowners
- Point-of-Use Units – Small tankless heaters for specific locations like bathrooms or kitchen sinks
Is a Tankless Water Heater Right for Your Home?
Tankless water heaters are ideal for:
- Families who frequently run out of hot water
- Homeowners looking to reduce energy costs
- New construction or major renovations
- Homes with limited space for water heaters
- Properties with high hot water demands
- Environmentally conscious homeowners
Ready to upgrade to endless hot water? Our experienced plumbers will assess your home's needs, recommend the right system size, and provide a transparent quote with no hidden fees.
Why Choose Holy City Plumbing for Tankless Water Heaters?
- Expert Sizing & Installation – We ensure your system is properly sized for your household's needs
- Licensed & Experienced – Our plumbers are trained in tankless technology and local codes
- Transparent Pricing – Know exactly what you'll pay before work begins
- Quality Products – We install reliable, high-efficiency systems from trusted manufacturers
- Ongoing Support – We're here for maintenance, repairs, and questions long after installation
- Local Service – We're your neighbors, serving Mount Pleasant and Charleston families
Frequently Asked Questions
How much does a tankless water heater cost to install?
Installation costs vary based on system size, fuel type, and whether gas line upgrades are needed. Contact us for a free, no-obligation quote based on your specific situation.
Will a tankless water heater work for my whole house?
Yes! We'll properly size a whole-house tankless system based on your simultaneous hot water needs, number of bathrooms, and typical usage patterns.
How often does a tankless water heater need maintenance?
We recommend annual maintenance including descaling and flushing to remove mineral deposits and keep your system running efficiently.
Can you replace my tank water heater with a tankless system?
Absolutely! We handle the complete transition including removing your old tank, any necessary gas line or electrical upgrades, and full installation of your new tankless system.
Ready for Endless Hot Water?
Contact Holy City Plumbing today for expert tankless water heater installation in Mount Pleasant and Charleston. Our licensed plumbers will help you choose the right system, provide transparent pricing, and deliver professional installation that ensures years of reliable, efficient performance.
