Knoxville’s Guide to Energy-Efficient Water Heaters: Tankless, Hybrid & More
Key Takeaways:
- Impact on Bills: Water heating accounts for nearly 20% of monthly energy use in many homes; upgrading can significantly reduce utility costs.
- Signs to Upgrade: Consider replacing your unit if it is over 10 years old, lacks an EnergyGuide label, has slow recovery times, or if you notice sudden spikes in your energy bills.
- Professional Installation: Proper sizing and compliance with electrical/plumbing codes are critical for safety and efficiency, requiring professional expertise.
Your water heater does more than supply hot showers—it plays a major role in your home’s energy use. If you’ve been noticing higher utility bills or you’re curious about upgrading to an energy-efficient water heater in Knoxville, Chaffee HVAC, Plumbing, & Electrical is here to guide you. Our team handles everything from water heater installation to plumbing and electrical services, so you can feel confident your home is in good hands.
Why Upgrade to an Energy-Efficient Water Heater?
In many Tennessee homes, water heating accounts for nearly one-fifth of monthly energy use. Choosing an efficient water heater can help you:
- Save money on energy bills every month.
- Enjoy steady hot water without long recovery times.
- Reduce your environmental impact.
- Extend the life of your system with less strain.
We work with all types of systems, including tankless water heaters, hybrid water heaters, and high-efficiency tanks, to help Knoxville homeowners choose the best fit for their household.
Signs Your Water Heater Isn’t Energy-Efficient

If you’re unsure whether your current system is costing you extra, here are a few red flags:
- EnergyGuide label: Older models may lack this, and newer ones show clear efficiency ratings.
- Unit age: Anything over 10 years old is usually less efficient.
- Slow recovery: Long waits for hot water mean wasted energy.
- Rising bills: A sudden jump in utility costs could point to inefficiency.
Our licensed Knoxville plumbers can evaluate your water heater and let you know if repair, tune-ups, or replacement makes the most sense.
Tank, Tankless, or Hybrid: What Works Best?

Today’s homeowners have more options than ever:
- Traditional tanks: Affordable to install, but they keep water hot constantly.
- Tankless water heaters: Heat water only when you need it, saving energy and providing endless hot water.
- Hybrid water heaters: Use heat pump technology plus a tank, making them one of the most efficient systems available.
“For larger families in Knoxville, we often recommend hybrid water heaters. They combine efficiency with plenty of capacity,” says one of our Chaffee technicians.
How to Improve Water Heater Efficiency Without Replacing It
Not ready for a new system yet? Try these simple steps:
- Lower the thermostat to 120°F.
- Insulate hot water pipes and the tank.
- Flush the tank once a year to clear sediment.
- Schedule regular maintenance with a plumber.
These small changes can reduce your water heating costs by 10–20%.
The Cost of Running Energy-Efficient Water Heaters
Upfront, tankless and hybrid models cost more than standard tanks. But Knoxville homeowners often see the difference in their bills:
- Tankless water heaters: Average $25–$45 per month, depending on water use.
- Hybrid water heaters: Known for some of the lowest operating costs on the market.
Our team can run the numbers for your household so you can see the savings before making a decision.
Professional Water Heater Installation in Knoxville

Installing a water heater isn’t a DIY job. It requires plumbing, electrical, and safety expertise. At Chaffee HVAC, Plumbing, & Electrical, we make sure your system is:
- Sized correctly for your household.
- Installed to meet all local codes.
- Positioned for efficiency and accessibility.
- Tested for reliable operation before we leave.
When you need water heater installation in Knoxville, trust the company that handles the plumbing, HVAC, and electrical work all under one roof.
Caring for Your Water Heater
Regular care extends the life of your water heater, no matter the type. A few homeowner-friendly steps include:
- Flush the tank once a year.
- Replace the anode rod every 3–5 years.
- Watch for leaks or rust.
- Book yearly professional maintenance.
With proper upkeep, tank units last about 8–12 years, while tankless systems can often last 20.
Knoxville’s Full-Service Plumbing & HVAC Team
From water heater repair to air conditioning and heating services, Chaffee HVAC, Plumbing, & Electrical is Knoxville’s trusted choice for whole-home comfort. Whether you’re upgrading to a tankless model, maintaining your heat pump, or need emergency plumbing, we’ve got you covered.
Call today to schedule your water heater consultation and start enjoying lower bills tomorrow.
FAQs About Energy-Efficient Water Heaters
Can you install energy-efficient water heaters?
Yes! We install tankless, hybrid, and high-efficiency tank water heaters in Knoxville. Professional installation ensures you get the best performance and savings from your new system.
How do I know if my water heater is energy-efficient?
Look for the EnergyGuide label, check the unit’s age, and watch your utility bills. If you’re unsure, schedule an inspection with our Knoxville plumbing team.
How to make a water heater more energy-efficient?
Lower the thermostat, insulate pipes, flush the system, and keep up with annual maintenance. These simple steps can improve efficiency and reduce monthly costs.
Is an energy-efficient water heater worth it?
Yes. Knoxville homeowners often save hundreds per year while enjoying better performance and longer system life.
Which is more efficient, a tankless or hybrid water heater?
Tankless is great for smaller households or limited space, while hybrid systems are ideal for families that use lots of hot water daily.
Do tank or tankless water heaters use more electricity?
Tank models generally use more electricity since they heat water constantly. Tankless units only use energy when you turn on the tap.
What is the life expectancy of a tankless water heater?
With proper maintenance, tankless models can last up to 20 years—almost twice as long as a standard tank.
How much does an electric tankless water heater cost per month?
Most Knoxville households spend between $25–$45 per month, depending on water usage.
