Best Tankless Gas Water Heaters
Updated June 2025
Join the millions that have trusted BuyersGuide.org to help them make smarter buying decisions. Let our independent expert reviews and data-driven shopping recommendations help you find the one that's right for you.
Best Tankless Gas Water Heaters
2025 Buyer's GuideUpdated June 2025
Sort by:
1
1
NEW Rinnai RX199iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater, Indoor or Outdoor Water Heater, Up to 1...
Ease of installation
Value for money
Heat capacity
Water temperature
Works well
Energy efficiency
2
3
4
5
6
7
8
9
10
10
FOGATTI Natural Gas Tankless Water Heater - Outdoor Installation Up to 8.1 GPM, Gray Instant Hot Water Heater - Instagas Comfor...
Functionality
Ease of installation
Value for money
Our Top Choice
1
1
NEW Rinnai RX199iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater, Indoor or Outdoor Water Heater, Up to 1...
Ease of installation
Value for money
Heat capacity
Water temperature
Works well
Energy efficiency
Expert Analysis
Our team of experts highlights useful information so you can easily compare products to find the one that's right for you.
Award-Winning Tech
Our technology analyzes thousands of purchase trends to bring you the top product recommendations.
1,000,000+ shoppers use Buyer's Guide every week to find the best products and services online.
Learn more about our rankings.
Helping millions of users make smarter purchases online.
