US market · All prices in USD
Best Tankless Water Heaters — Budget ($500–$800)
Last verified: March 2026-
EcoSmart ECO 18
$550 USD
Electric efficiency
ecosmartus.com -
Rheem RTEX-13
$600 USD
Compact design
rheem.com -
Stiebel Eltron DHC
$500 USD
German engineering
stiebel-eltron.com -
SioGreen IR260
$750 USD
Infrared technology
siogreen.com -
Marey ECO150
$680 USD
Portable option
marey.com