Tankless Water Heater Repair & Installation in Louisville, KY
24/7 Emergency Service
HVAC emergencies happen when you least expect them. Contact the professionals at A+ Derr to take care of your issue. We have the necessary skills and tools to fix your system so you can safely use it once again. Call our team at (833) 232-4328 to get emergency HVAC services in Louisville, KY, Evansville, IN, or the surrounding areas.
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Tankless Water Heater Installation & Repair in Louisville, KY

Person turning knob to adjust temperature setting on tankless water heater
Ensuring reliable access to hot water in your Louisville home means having a plumber you can trust to keep your water heater system in top working condition. Whether you need a new tankless water heater installed or have an existing unit in need of repair, A+ Derr Heating & Cooling has you covered. With 24/7 emergency service availability and free estimates on water heater replacements, you can rest assured our team will deliver the top-quality tankless water heater solutions you deserve exactly when you need them most. Schedule tankless water heater installation or repair in Louisville or Evansville by contacting us today!

How Tankless Water Heaters Work

Tankless water heaters operate by heating water directly as it flows through the system, rather than storing it in a reservoir tank. When a hot water tap is activated, cold water travels through a pipe into the tankless unit, where either an electric element or gas burner heats the water instantly. This process provides a continuous supply of hot water without the need for a storage tank, making tankless water heaters more energy-efficient and capable of delivering hot water as needed.

4 Benefits of Upgrading to Tankless

There are many benefits to upgrading your storage tank system to a tankless water heater unit, including:
  • Energy efficiency: They only heat water when you need it, reducing energy consumption and lowering utility bills compared to traditional tank-based systems that constantly keep water hot.
  • Unlimited supply: Unlike traditional systems, these provide a continuous flow of hot water, ensuring you never run out during showers, laundry, or other household tasks.
  • Space savings: These systems are compact and can be installed on walls or in small spaces, freeing up valuable floor space that would otherwise be occupied by a bulky reservoir tank.
  • Longer lifespan: Compared to traditional tank models, tankless models typically last longer with an average lifespan of 20 years or more with routine maintenance.

Tankless Water Heater Installation & Replacement

A+ Derr is proud to provide professional tankless water heater installation and replacement services, ensuring an easy transition from traditional tank systems. The installation process typically takes just a few hours, depending on the job complexity. Switching from a tank to a tankless model is straightforward with our skilled team, and we offer free estimates on all replacements, making it easy for you to plan your upgrade with confidence.

Tankless System Repair & Maintenance

In addition to installation and replacement, we offer comprehensive tankless water heater repair and maintenance services to ensure your system runs efficiently year-round. Our quick repair services address any issues promptly, reducing downtime and restoring your hot water supply as soon as possible. Additionally, we offer flush and fill maintenance to remove mineral buildup and extend the life of your tankless water heater, helping you avoid costly repairs and maintain optimal performance.

Why Choose Us?

Since 1975, A+ Derr has proudly served as the go-to plumbing partner for Louisville residents. As a fourth-generation, family-operated company, we’re uniquely familiar with the hot water demands of local families. With 24/7 emergency service availability and 100% satisfaction guaranteed, you can count on us to keep your home connected to a safe, reliable hot water supply for years to come. Call or contact our team online to book your appointment in Kentuckiana now!

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What To Expect

Discover The A+ Derr Difference

24/7 Heating & Cooling Repairs​

Heating and cooling emergencies can happen on nights, weekends, and holidays, so you can trust us to be there no matter when you need us.

Licensed & Experienced Technicians​

Our experts have the expertise and training to deliver the highest quality services every time.

100% Satisfaction Guarantee​

Our team is dedicated to ensuring your 100% satisfaction with every HVAC service we perform.

Servicing All Major Makes & Models Of Equipment

We are a Lennox Premier Dealer and also service on all makes and models of equipment, including Goodman, Amana, Carrier, Trane, Rheem & more!

Locally Owned & Operated​

Since we’re based in Kentuckiana, we know the needs of Evansville, Louisville, and surrounding communities.

50+ Years in Business​

For over 50 years, A+ Derr has provided high-quality service, products, and results for Kentuckiana's residents.

24/7 Heating & Cooling Repairs​

Heating and cooling emergencies can happen on nights, weekends, and holidays, so you can trust us to be there no matter when you need us.

Licensed & Experienced Technicians​

Our experts have the expertise and training to deliver the highest quality services every time.

100% Satisfaction Guarantee​

Our team is dedicated to ensuring your 100% satisfaction with every HVAC service we perform.

Servicing All Major Makes & Models Of Equipment

We are a Lennox Premier Dealer and also service on all makes and models of equipment, including Goodman, Amana, Carrier, Trane, Rheem & more!

Locally Owned & Operated​

Since we’re based in Kentuckiana, we know the needs of Evansville, Louisville, and surrounding communities.

50+ Years in Business​

For over 50 years, A+ Derr has provided high-quality service, products, and results for Kentuckiana's residents.

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Our Reviews

See What Your Neighbors Are Saying

Jake came and did my spring service yesterday. Their service is very professional, they are always out to get the best deals for anything I may need. I purchased new units from them a couple years ago, and the savings has been so noticeable.

Amanda A.

Amanda A.

Texal and his crew came out on time. Had 2 new systems put in. The service was great. Highly recommend.

Beverly G.

Beverly G.

Nicholas has always been so polite and professional. We feel very comfortable having him in our home and know that his inspections are thorough.

Vicki L.

Vicki L.

Awesome service. They make it easy and painless to keep our new HVAC up and running at top efficiency!

Hal B.

Hal B.

Dylan came today for our tune up and as usual, we are very pleased with our service.

Haley B.

Haley B.