Top 10 Tankless Water Heater in Louisville, KY
The best tankless water heater companies in Louisville, KY for 2026 include ASI Plumbing (4.9), Dauenhauer Plumbing Heating Air & Electric (4.8), Tom Drexler Plumbing, Air & Electric (4.8). All install, repair, and maintain tankless and on-demand water heaters from all major brands.
Tom Drexler Plumbing, Air & Electric
Dauenhauer Plumbing Heating Air & Electric
Jarboe's Heating, Cooling & Plumbing
ASI Plumbing
Absolute Services
Vessels Plumbing & Services Inc
Peterman Brothers Heating Cooling Plumbing
Bryant Heating, Cooling, Plumbing, & Electric
Sanders Water Heaters And Plumbing
Allgeier Air
How We Ranked These Louisville Pros
Our rankings are based on a weighted evaluation of five key factors:
- Licensing & Insurance — All listed businesses hold active state licenses verified through official databases.
- Customer Reviews — We aggregate ratings from Google, Yelp, and the BBB, weighting recency and review volume.
- Response Time — Companies offering same-day or 24/7 emergency service score higher.
- Pricing Transparency — Businesses who offer flat-rate pricing or free estimates rank above those with opaque billing.
- Experience & Longevity — Years serving the Louisville market and breadth of services factor into overall reliability.
Rankings are reviewed quarterly. Have a correction? Contact us.
Frequently Asked Questions
How much does a tankless water heater cost in Louisville?
A tankless water heater in Louisville costs $2,500-$5,000 installed. The unit itself is $1,000-$2,500 and installation labor is $1,000-$2,500 including venting and connections.
Is a tankless water heater worth it?
Yes if you stay 7+ years. Tankless saves $100-$150/year on energy, lasts 20+ years vs 10-12 for tank, and provides unlimited hot water. The higher upfront cost pays for itself over time.
Do tankless water heaters need maintenance?
Yes, annual descaling is recommended, especially in hard water areas. Costs $100-$200 DIY or $200-$350 professional. Without maintenance, mineral buildup reduces efficiency and lifespan.