Tankless Water Heaters
Professional plumbing solutions for Central Florida homes
- Same-Day Appointments
- Upfront, No-Surprise Pricing
- Licensed & Insured Technicians
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- Licensed & Insured
- Family Owned & Operated
- 4.9 Star Rating
- Same-Day Service
About This Service
Tired of running out of hot water halfway through your morning routine? Tankless water heaters deliver hot water on demand — as long as you need it, without the energy waste of keeping a 50-gallon tank heated around the clock. Cool Rays Air Conditioning & Plumbing installs, repairs, and maintains tankless water heaters from top brands like Rinnai, Navien, and Noritz. These compact, wall-mounted units heat water instantly as it flows through the system, providing an endless supply while cutting water heating energy costs by 20-30% compared to traditional tank models. With a lifespan of 15-20 years and a footprint a fraction the size of a standard tank, tankless technology is a smart upgrade for Central Florida homeowners who want better performance, lower bills, and more usable space.
- Honest Estimates
- Upfront Pricing
- Satisfaction Guaranteed
Endless Hot Water
Tankless systems heat water on demand, so you'll never run out — even during back-to-back showers, laundry loads, and dishwasher cycles.
Schedule ServiceSpace-Saving Design
Tankless units are compact and mount on a wall, freeing up the floor space that a traditional 40- or 50-gallon tank would occupy.
Schedule ServiceLower Energy Costs
By only heating water when you need it, tankless systems can reduce water heating energy costs by 24% to 34% compared to traditional tank models.
Schedule Service“Cool Rays is hands-down the best HVAC company we've ever worked with. They showed up on time, diagnosed the problem quickly, and had our AC running perfectly within the hour. Highly recommend!”
Sarah M.
Brevard County
Our Process
Evaluate Your Needs
We assess your household's hot water demand, number of fixtures, simultaneous usage patterns, and utility connections to determine the right tankless system.
Select the Right System
Based on your needs and budget, we recommend the ideal tankless model — including sizing, fuel type, and brand — with clear pricing and efficiency ratings.
Professional Installation
Our licensed plumbers handle the full installation, including any necessary upgrades to gas lines, electrical circuits, or venting to support your new system.
Test and Educate
We test the system at multiple fixtures, verify proper temperature output, and walk you through operation and basic maintenance so you get the most from your investment.
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Schedule your service today — it only takes a minute.
How Tankless Water Heaters Work
Unlike traditional tank water heaters that store 40 to 80 gallons of preheated water, tankless systems heat water only when you turn on a hot water tap. When flow is detected, the unit activates a powerful gas burner or electric heating element that rapidly brings the water up to your set temperature as it passes through the heat exchanger. When you turn the tap off, the unit shuts down — using zero energy during standby. This on-demand approach eliminates the standby heat loss that accounts for a significant portion of a traditional water heater’s energy consumption.
Benefits of Tankless Water Heaters for Florida Homes
Central Florida homeowners are uniquely positioned to benefit from tankless water heater technology. Because our incoming water temperature is already relatively warm — typically 70 to 75 degrees — tankless units don’t have to work as hard to reach your desired output temperature. This means a smaller, less expensive unit can often handle the same demand that would require a larger system in northern climates. The compact, wall-mounted design is also a plus in Florida homes where garage and utility closet space is often limited. And with proper maintenance, a quality tankless unit can deliver reliable hot water for 15 to 20 years.
Tankless Installation, Repair, and Maintenance
Whether you’re ready to upgrade from a traditional tank or need service on an existing tankless system, Cool Rays provides the full range of tankless water heater services. Our installation process includes a thorough assessment of your home’s needs, professional sizing, and code-compliant installation with all necessary utility upgrades. For existing systems, we offer repair services for all major brands — including Rinnai, Navien, Noritz, and Rheem — as well as annual descaling and maintenance to keep your unit performing at its best.
Frequently Asked Questions
How is a tankless water heater different from a traditional tank?
A traditional tank water heater stores 40-80 gallons of pre-heated water and constantly uses energy to maintain that temperature — even when you're asleep or at work. A tankless unit has no storage tank. Instead, it uses a powerful gas burner or electric element to heat water instantly as it flows through the unit, only consuming energy when you actually turn on a hot water tap. This eliminates standby energy loss and provides a continuous, unlimited supply of hot water.
How do I know what size tankless water heater I need?
Sizing a tankless water heater is based on two factors: the maximum flow rate you need (how many fixtures running simultaneously) and the temperature rise required (the difference between your incoming water temperature and your desired output temperature). In Central Florida, incoming water temperatures are relatively warm (around 70-75 degrees), which means tankless units perform more efficiently here than in colder climates. We'll calculate the right size during our in-home assessment.
Do tankless water heaters require maintenance?
Yes. Tankless units should be descaled (flushed with a vinegar solution) annually to remove mineral buildup from the heat exchanger — especially important in Central Florida's hard water. Neglecting descaling reduces efficiency, restricts flow, and can trigger error codes that shut the unit down. We also inspect the inlet filter, check for proper combustion on gas units, and verify all connections during annual service.
How long does a tankless water heater last?
Tankless water heaters typically last 15-20 years with proper maintenance — nearly double the lifespan of a standard tank water heater. Many components, including the heat exchanger, are individually replaceable, which means the unit can often be economically repaired even after 10+ years of service. This extended lifespan helps offset the higher upfront installation cost.
Still have questions? We're happy to help.
Related Services
Leak Detection
Hidden water leaks can silently destroy your home — rotting framing, fueling mold growth, and driving up your water bill month after month. Cool Rays Air Conditioning & Plumbing uses advanced electronic leak detection equipment to pinpoint leaks behind walls, beneath concrete slabs, and underground without tearing apart your property. Our licensed plumbers combine acoustic listening devices, thermal imaging, and pressure testing to locate the exact source of the problem quickly and accurately, so repairs can be targeted and minimally invasive. If you've noticed unexplained water bill increases, damp spots, or the sound of running water when nothing is on, call us before the damage spreads.
View ServiceWater Heater Services
Whether your water heater has stopped producing hot water, is making strange noises, or is nearing the end of its lifespan, Cool Rays Air Conditioning & Plumbing has you covered. We service, repair, and install all types of water heaters — traditional tank units, tankless on-demand systems, and energy-efficient hybrid heat pump models. Our licensed plumbers diagnose problems accurately, present your options clearly, and deliver lasting solutions with upfront pricing and no hidden fees. From emergency repairs to planned upgrades, we're the Brevard County area's trusted team for everything water heater related.
View ServiceWater Heater Installation
When it's time for a new water heater, Cool Rays Air Conditioning & Plumbing delivers expert installation from start to finish. We help you choose the right system for your household size, hot water demands, and energy goals — then install it to code with proper permits, connections, and safety controls. Whether you're upgrading from an aging tank unit to a high-efficiency hybrid, switching to a tankless system for endless hot water, or simply replacing a failed unit with a reliable new one, our licensed plumbers handle every detail. All installations include a full system test, manufacturer warranty activation, and a walkthrough so you know exactly how your new water heater operates.
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Our expert HVAC technicians are standing by to keep your home comfortable. From repairs to installations, Cool Rays has you covered.