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Tankless Water Heater in San Marcos, CA
Experience endless hot water and energy savings with tankless water heater installation, repair, and maintenance in San Marcos. Our experts ensure optimal performance. Call today!
For homeowners in San Marcos, the frustration of running out of hot water or facing unexpectedly high energy bills is a common problem. Traditional tank-style water heaters continuously burn energy to keep a large reservoir of water hot, leading to wasted resources and limitations on your hot water supply. A tankless water heater offers a modern, efficient, and reliable solution, providing endless hot water precisely when you need it.
At Aelott Air Conditioning, we specialize in providing expert tankless water heater installation, repair, and maintenance services tailored to the unique needs of San Marcos residents. Our certified technicians have the expertise to help you select, install, and maintain the perfect system for your home, ensuring you enjoy the comfort and savings of on-demand hot water for years to come.
The Superior Performance of a Tankless System
Switching from a traditional tank to a tankless water heater is a significant upgrade for any household. Instead of storing and constantly reheating 40-50 gallons of water, a tankless unit uses a powerful heat exchanger to heat water instantaneously as it flows through the pipes. This fundamental difference delivers a host of benefits that enhance comfort, reduce costs, and improve your home’s efficiency.
- Unlimited Hot Water: Because a tankless system heats water on demand, it never runs out. You can run the dishwasher, do a load of laundry, and have multiple family members take showers back-to-back without worrying about the water turning cold.
- Significant Energy Savings: Traditional water heaters suffer from standby heat loss, where energy is wasted keeping the stored water hot 24/7. Tankless models eliminate this waste entirely, operating only when you turn on a hot water tap. This can reduce water heating energy costs by 24%–34% for homes that use 41 gallons or less of hot water daily.
- Extended Lifespan: A well-maintained tankless water heater can last 20 years or more—nearly double the lifespan of a conventional tank heater. This longevity makes it a smart, long-term investment in your home’s infrastructure.
- Space-Saving Design: Tankless units are compact and wall-mounted, freeing up valuable floor space in your garage, closet, or utility room. This sleek design allows for more flexible installation options and helps declutter your home.

Our Tankless Water Heater Services
A tankless water heater is a sophisticated piece of equipment that requires professional expertise for proper installation and service. Our team is fully trained to handle every aspect of your system’s lifecycle, from initial setup to routine care.
Expert Tankless Water Heater Installation
A successful installation is the foundation of a reliable tankless system. Our process is meticulous and designed to ensure optimal performance and safety. We begin with a thorough assessment of your home’s specific needs, including your family’s hot water usage, the existing plumbing, and your gas or electrical capacity. Our technicians will correctly size the unit to match your peak demand, ensuring you always have sufficient hot water without investing in an oversized, inefficient system. We handle all aspects of the installation, including proper venting, secure mounting, and connecting all water and gas lines according to strict local codes and manufacturer specifications.
Reliable Tankless Water Heater Repair
Even the most durable systems can experience issues over time. If your tankless water heater isn't performing as it should, our technicians can diagnose and resolve the problem quickly. Common issues we address include mineral buildup from hard water, ignition or flame failure, inconsistent temperatures, or error codes on the digital display. We use advanced diagnostic tools to pinpoint the root cause and perform lasting repairs. For related heating system issues, we also provide expert Heating Repair to ensure all your home's essential systems are functioning correctly.
Proactive Maintenance and Descaling
The water in San Marcos can be hard, leading to mineral and scale buildup inside your tankless unit's heat exchanger. This buildup reduces efficiency, restricts water flow, and can eventually cause system failure. Regular maintenance is crucial to prevent these problems. Our comprehensive maintenance service includes a full system inspection and a professional descaling (or flushing) process that removes mineral deposits. This proactive care restores your unit’s efficiency, extends its lifespan, and ensures it continues to provide an uninterrupted supply of clean, hot water. This service complements our other maintenance offerings, such as Heating Maintenance, to keep your home running smoothly.
Choosing the Right Tankless System for Your San Marcos Home
Not all tankless water heaters are the same. The right choice depends on your home’s infrastructure, your budget, and your performance expectations. Our team will guide you through the options to find the perfect fit.
- Gas-Fired Tankless Heaters: These are the most common and powerful option, offering the highest flow rates. They are ideal for larger families with high hot water demands. Installation may require upgrading the existing gas line to accommodate the unit’s needs, and proper ventilation is essential for safety.
- Electric Tankless Heaters: Electric models are highly efficient and don’t require venting, making them easier to install in various locations. However, they typically have a lower flow rate than gas units and may require significant electrical upgrades to your home’s panel and wiring. They are often a great choice for smaller households or as point-of-use heaters for a specific sink or bathroom.
Proper sizing is the most critical factor in achieving satisfaction with your new system. We calculate the required flow rate and temperature rise needed for your home to ensure the model you choose can handle your peak hot water usage without a drop in performance.
Experience Endless Hot Water with Aelott Air Conditioning
Ready to upgrade your comfort and efficiency with a tankless water heater? Aelott Air Conditioning is here to help you every step of the way—from expert installation to ongoing maintenance. Learn more about our team and values, get in touch today to schedule your service, or see why homeowners in San Marcos trust us by reading our customer reviews. With decades of HVAC expertise and a commitment to satisfaction, we’re your local partner for reliable, on-demand hot water—whenever you need it.
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