Tankless Water Heaters in Knoxville, TN
5507 Ball Camp Pike Knoxville, TN 37921

Why Choose a Tankless Water Heater?
Tankless water heaters have many benefits over traditional tank models, including increased energy efficiency and longer lifespan. If you live in Knoxville and are interested in installing a tankless water heater, Happy Hiller can help.
There are many factors to consider when choosing a tankless water heater, including flow rate, energy efficiency, and cost. If you have a smaller home, a tankless water heater can be a great choice because it takes up very little space compared to a conventional tank heater. By choosing an energy-efficient model you can also save money on utility bills.
Our hot water heater specialists will help you choose the right model for your home and budget and ensure that it is properly installed. Call us today!

Tankless Water Heater Repairs
If you have a tankless water heater, there may come a time when you need to have it repaired. When you’re having an issue, our water heater repair experts will fully inspect your unit to find the problem and will have it back up and running in no time!
Some common repairs include fixing leaks, replacing parts that aren’t working properly, and cleaning out any mineral buildup. Regular maintenance can also help prevent repairs and make your tankless water heater last even longer.
If your hot water isn’t working, running out more quickly than usual, or if you notice any leaks or strange noises, it’s best to call an expert. For tankless water heater repair in Knoxville, give Happy Hiller a call today!

Tankless Water Heater Installation in Knoxville
Upgrading or switching to a tankless hot water heater can be a great choice for many homeowners in Knoxville. A tankless hot water heater is a high-efficiency unit that saves space and often reduces water and energy costs.
If you’re interested in a tankless water heater installation, our technicians will first evaluate your home for the proper sizing of the unit and check all the local codes and permits. We’ll then mount the unit on a wall, connect gas and water lines, and properly vent the unit.
It’s important to have a trained professional install your tankless water heater to ensure it’s done correctly and safely. If you’re having issues with your current hot water heater or you’re looking for a more energy-efficient unit, give us a call for tankless water heater installation in Knoxville!
Tankless Water Heater Maintenance
Although water heating technology has improved significantly since we started our business, one thing remains: proper maintenance is essential to keeping your system running efficiently and effectively.
Our Happy Hiller club makes tankless water heater maintenance in Knoxville easy and affordable! Our trained and experienced technicians will come to your home or business and thoroughly inspect your system, clean the tank and filters, and check the gas line for leaks or damage. We’ll also handle any tankless water heater repairs if we find an issue.
You can be confident that your hot water heater is energy-efficient and running at its best with regular tankless water heater maintenance in Knoxville!
Switching from a Conventional Tank Water Heater
If you’re thinking about switching to a tankless water heater, our experienced techs can help you choose the right one for your home. There are a few things that are important to consider:
- Sizing: We’ll evaluate your home to determine the appropriate size of the unit.
- Fuel type: Tankless water heaters can run on gas or electricity. If you’re looking to save money, it’s best to look into the availability and costs of the fuel types in your area.
- Venting: Proper venting is necessary for the safe and efficient operation of a tankless water heater. We’ll inspect your venting system and can install new ductwork if it’s needed.
- Plumbing: Depending on their placement, pipes often will need to be adapted to accommodate the new unit.
Tankless water heaters can also be more expensive to purchase and install than traditional tank water heaters, however, there are often rebates and tax credits available when you switch to an energy-efficient unit. If you’re interested in a new tankless hot water heater, give us a call and we’ll help you get started!
Flexible Financing for Tankless Water Heater Replacement in Knoxville, TN
Whether you’re upgrading your unit, or you need an emergency tankless water heater repair, in Knoxville, we’re here to help. We partner with GreenSky, one of the leading financial technology companies, to offer you a variety of great financing options to choose from.
We also offer True Transparency Pricing – there are no surprises with Happy Hiller. With an itemized list of the materials used and tasks performed, you’ll understand where every dollar is going. We know that a new tankless water heater, or a major repair, can be a big investment, and you should know exactly what you’re paying for!
Between the fast approvals and affordable payment options provided by GreenSky, and the peace of mind you’ll get with transparent pricing, we’re confident you’ll find Happy Hiller to be the best choice in Knoxville for tankless water heaters!
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Get PromotionTankless Water Heaters in Knoxville: FAQs
Tankless water heaters should be installed by a professional, as they require someone with specialized expertise and training. If you’re interested in a tankless water heater installation, a water heater specialist will first check your ductwork, water and fuel sources, and then remove whatever existing unit you have.
Tankless water heaters also must be properly sized for your home to work efficiently. If you have a larger home, you might risk overloading the unit when multiple people are trying to use hot water at the same time.
If you’re considering replacing your old water heater, hire a company specializing in tankless water heater installation in Knoxville. For additional information on how the heater specialists at Happy Hiller can help, contact us today!
Several factors can influence the recommended frequency of tankless water heater replacement, including the quality of the unit, how often it’s used, and whether or not you perform regular maintenance.
Tankless water heaters have a longer lifespan (up to 20 years) than the typical tank-style heater (10-12 years). If you have a high-quality unit and take good care of it, you could get 25 years or more out of it. So if you’re considering replacing your old water heater, switching to a tankless heater can be a great choice.
Tankless water heaters are typically more expensive than a conventional tank unit, but between rebates, energy efficiency, and the longer lifespan, you’ll often save money in the long run.
If you’re interested in a new tankless water heater, in Knoxville, trust the experts at Happy Hiller!
Tankless water heaters are generally very reliable, but like any mechanical device, they can experience problems from time to time. Here are a few common issues that you might encounter with your tankless water heater:
- Lack of hot water: This can be caused by a variety of issues, such as a clogged filter, low gas pressure, or a faulty thermostat.
- Leaking: A leak in the unit or in the water or gas lines can cause damage and should be addressed immediately. Gas leaks are very serious and can cause carbon monoxide release.
- Strange noises: Popping, banging, or whistling sounds can indicate mineral buildup in the unit, which can be cleaned by a professional.
- Error codes: Many tankless water heaters have digital displays that show error codes when a problem is detected. A professional will be able to diagnose the issue based on the code.
If you have a concern, it’s best to contact an expert in tankless water heater repair in Knoxville. They’ll be able to diagnose the issue and get your hot water flowing again in no time!
Tankless units can be up to 30% more efficient than their tanked counterparts. Here’s why:
- Continuous hot water: A tankless water heater heats water on demand, so you’re not wasting energy keeping a tank of water hot all the time.
- Longer lifespan: Tankless water heaters can last up to 20 years, which is longer than traditional tank water heaters.
- Energy savings: Tankless water heaters can save you up to 30% on your water heating costs.
- Lower emissions: Tankless water heaters typically have lower emissions than traditional tank water heaters, making them more environmentally friendly.
Keep in mind, the energy efficiency of a tankless water heater in Knoxville also depends on the size and quality of the unit, the fuel source, and how it is installed and maintained.
Overall, in Knoxville, a tankless water heater is a great way to boost your home’s energy efficiency and save you money on your monthly utilities!
Regular maintenance is important for keeping your tankless system running efficiently and safely. It’s a good idea to have a professional provide water heater services at least once a year.
Here are a few things that provide when we service a tankless water heater in Knoxville:
- Cleaning: Tankless water heaters need to be cleaned regularly to remove mineral buildup, which can decrease efficiency and cause damage over time.
- Filter Changes: Some tankless water heaters have filters that need to be cleaned or replaced on a regular basis.
- Gas Line Inspection: We’ll check the gas line to the unit for any leaks or damage, and repair it if necessary.
By taking care of your tankless system, you can help ensure that it runs safely and efficiently for many years to come!
Why Choose Happy Hiller?
Care is Our Core ValueTM
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Family Owned and Operated Since 1990
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The Happy Hiller Promise
We at Happy Hiller feel very lucky to have such a committed, driven team of technicians. If you’re a homeowner in Knoxville and a tankless water heater seems like the right choice for you, we’ve got you covered. We stand by the quality of our work by offering our Happy Hiller 100% satisfaction guarantee, as well as a one-year fixture and equipment warranty. Whether you need a water heater repair or water heater installation, you can feel confident that when you call Happy Hiller in Knoxville, TN., you'll get quality work you can trust. Come and experience the Hiller difference today!
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The Best Choice in Knoxville for Tankless Water Heaters
We are the best choice when it comes to quality Knoxville tankless water heaters in Tennessee. We offer a wide selection of top tankless water heaters, and we're dedicated to offering our customers the best services and competitive rates. We are a licensed and insured, family-owned and operated business that has provided quality plumbing services to the Knoxville area for over 30 years.
Plumbing, Heating & AC Repair and Electrical Services.
We understand that there are many HVAC, electrical, and plumbing companies in Knoxville, TN. But when you choose Hiller, you'll gain the advantage of a company that can handle all your residential and commercial needs. Plus, we offer a 100% satisfaction guarantee for all our services. Our home services company in Knoxville is committed to providing stellar customer service experiences.
With Hiller, no plumbing repair or service ever needs to become a big deal.
Call Hiller today, and let our friendly professionals keep your home or business flowing smoothly.
Feeling the proverbial heat because of a faulty heating and cooling system?
If so, contact us to diagnose any problems your heater or AC may be experiencing. Our HVAC company can also ensure your unit is achieving its peak performance with our routine maintenance services, so you can be ready for every season that lies ahead.
Resolving electrical issues yourself is dangerous.
Even seemingly small tasks can lead to big accidents. Rather than risk being shocked, call Hiller to have a trained electrician solve any of your electrical service needs.
Nearest Locations
Chattanooga Plumbing, HVAC & Electrical Services
7339 Lee HwyChattanooga, TN 37421 T: (423) 299-6110
Cookeville Plumbing, HVAC & Electrical Services
1415 Interstate DrCookeville, TN 38501 T: (931) 372-2833
Crossville Plumbing, HVAC & Electrical Services
5335 Peavine RdCrossville, TN 38571 T: (931) 484-7936
Jackson Plumbing, HVAC & Electrical Services
210 Commerce Center CirJackson, TN 38301 T: (731) 423-0500
Knoxville Plumbing, HVAC & Electrical Services
5507 Ball Camp PikeKnoxville, TN 37921 T: (865) 602-7707
Clarksville Plumbing, HVAC & Electrical Services
1500 Ashland City RdClarksville, TN 37040 T: (931) 648-4222
Murfreesboro Plumbing, HVAC & Electrical Services
241 Southpointe WayMurfreesboro, TN 37130 T: (615) 890-9228
Nashville Plumbing, HVAC & Electrical Services
915 Murfreesboro PikeNashville, TN 37217 T: (615) 292-6110
North Nashville Plumbing, HVAC & Electrical Services
1617 Highway 31 WestGoodlettsville, TN 37072 T: (615) 851-4066
Huntsville Plumbing, HVAC & Electrical Services
1891 Slaughter RoadMadison, AL 35758 T: (256) 539-2167
Bowling Green Plumbing, HVAC & Electrical Services
2524 Petty DrBowling Green, KY 42103 T: (270) 843-6606
Nearest Hiller Locations
Knoxville Plumbing, HVAC & Electrical Services
5507 Ball Camp PikeKnoxville, TN 37921 T: (865) 602-7707
Crossville Plumbing, HVAC & Electrical Services
5335 Peavine RdCrossville, TN 38571 T: (931) 484-7936
Cookeville Plumbing, HVAC & Electrical Services
1415 Interstate DrCookeville, TN 38501 T: (931) 372-2833
Chattanooga Plumbing, HVAC & Electrical Services
7339 Lee HwyChattanooga, TN 37421 T: (423) 299-6110
Murfreesboro Plumbing, HVAC & Electrical Services
241 Southpointe WayMurfreesboro, TN 37130 T: (615) 890-9228
Bowling Green Plumbing, HVAC & Electrical Services
2524 Petty DrBowling Green, KY 42103 T: (270) 843-6606
Nashville Plumbing, HVAC & Electrical Services
915 Murfreesboro PikeNashville, TN 37217 T: (615) 292-6110
North Nashville Plumbing, HVAC & Electrical Services
1617 Highway 31 WestGoodlettsville, TN 37072 T: (615) 851-4066
Huntsville Plumbing, HVAC & Electrical Services
1891 Slaughter RoadMadison, AL 35758 T: (256) 539-2167
Clarksville Plumbing, HVAC & Electrical Services
1500 Ashland City RdClarksville, TN 37040 T: (931) 648-4222
Jackson Plumbing, HVAC & Electrical Services
210 Commerce Center CirJackson, TN 38301 T: (731) 423-0500
Nearest Hiller Locations
Bowling Green Plumbing, HVAC & Electrical Services
2524 Petty DrBowling Green, KY 42103 T: (270) 843-6606
Chattanooga Plumbing, HVAC & Electrical Services
7339 Lee HwyChattanooga, TN 37421 T: (423) 299-6110
Clarksville Plumbing, HVAC & Electrical Services
1500 Ashland City RdClarksville, TN 37040 T: (931) 648-4222
Cookeville Plumbing, HVAC & Electrical Services
1415 Interstate DrCookeville, TN 38501 T: (931) 372-2833
Crossville Plumbing, HVAC & Electrical Services
5335 Peavine RdCrossville, TN 38571 T: (931) 484-7936
Huntsville Plumbing, HVAC & Electrical Services
1891 Slaughter RoadMadison, AL 35758 T: (256) 539-2167
Jackson Plumbing, HVAC & Electrical Services
210 Commerce Center CirJackson, TN 38301 T: (731) 423-0500
Knoxville Plumbing, HVAC & Electrical Services
5507 Ball Camp PikeKnoxville, TN 37921 T: (865) 602-7707
Murfreesboro Plumbing, HVAC & Electrical Services
241 Southpointe WayMurfreesboro, TN 37130 T: (615) 890-9228
Nashville Plumbing, HVAC & Electrical Services
915 Murfreesboro PikeNashville, TN 37217 T: (615) 292-6110
North Nashville Plumbing, HVAC & Electrical Services
1617 Highway 31 WestGoodlettsville, TN 37072 T: (615) 851-4066
Panama City Beach Plumbing & HVAC Services
914 W 26th StLynn Haven, FL 32444 T: (850) 954-6110 Schedule Online

2524 Petty Dr
Bowling Green, KY 42103

1500 Ashland City Rd
Clarksville, TN 37040

1415 Interstate Dr
Cookeville, TN 38501

1891 Slaughter Road
Madison, AL 35758

210 Commerce Center Cir
Jackson, TN 38301

5507 Ball Camp Pike
Knoxville, TN 37921

241 Southpointe Way
Murfreesboro, TN 37130

915 Murfreesboro Pike
Nashville, TN 37217

1617 Highway 31 West
Goodlettsville, TN 37072