Best Tankless Water Heaters 2026 — Gas, Electric & Heat Pump

What I look for

Tankless water heaters save $50-$100/year on energy but cost $1,500-$3,500 to install. Here's when they pay off.

The picks

1. Rinnai V75iN Indoor Natural Gas Tankless

Best gas tankless overall. 7.5 GPM, condensing.

2. Navien NPE-240A2 Premium Tankless

Premium pick. Recirc pump built-in.

3. EcoSmart ECO 27 Electric Tankless

Best electric tankless. 27 kW, 6 GPM.

4. Rheem RTGH-95DVLN Indoor Natural Gas

Mid-range gas. Reliable, lower price than Rinnai.

5. Stiebel Eltron Tempra 36 Plus Electric

Premium electric. German engineering.

6. Bosch Tronic 3000T 7-Gallon Mini Tank

Point-of-use mini tank. For under-sink supplement.

7. Rinnai RU199iN Premium Condensing

Largest residential Rinnai.

8. AO Smith HPTU-50 Heat Pump Water Heater

Best electric storage alternative. 50-gal heat pump.

Frequently asked questions

Are tankless water heaters worth it?

Yes if you'll stay 7+ years. The energy savings pay back the install premium by year 8-10.

Gas vs electric tankless — which is better?

Gas for whole-house (5+ GPM). Electric for single-bath or kitchen point-of-use.

How much does tankless installation cost?

Gas: $1,500-$3,500. Electric: $800-$1,800. Heat pump: $1,200-$2,500.