Pentair Commercial (Sanford, NC) has introduced the ETi 400, a high-efficiency heater that uses a pure titanium, direct-fire heat exchanger for corrosion resistance. The easy-to-install 400,000-Btu unit has a 96-percent thermal efficiency rating; fast heat-up times; ultra-quiet operation; and a rotating control panel for left or right plumbing connections. For details, click here.
