Reviews Low Nox Emissions Water Heaters

AO Smith 40 Gallon 40,000 BTU Water Heater

Dynaclean diffuser dip tube-helps reduce lime and sediment buildup, maximizes hot water output.
Green Choice gas burner-patented design reduces NOx emissions.

BEST FOR: In-ground pools and spas with a surface area up to 400 ft. where natural gas is available. Its low environmental impact makes it ideal for pools and spas located where low-NOx emissions are required..
PREMIUM PERFORMANCE: The Hayward Universal H-Series 150,000 BTU Natural Gas Heater delivers fast premium heating performance for years of reliable, long-lasting comfort..
CORROSION PROTECTION: The Universal H-Series boasts exceptional protection against corrosion and premature failure caused by unbalanced water chemistry..
ENERGY SAVINGS: The efficient, industry-leading design reduces circulation pump run time to provide energy savings..
EASY-TO-USE: Intuitive front control panel provides easy operation, service and maintenance..

BEST FOR: In-ground pools and spas with a surface area up to 750 ft. where natural gas is available. Its low environmental impact makes it ideal for pools and spas located where low-NOx emissions are required..
PREMIUM PERFORMANCE: The Hayward Universal H-Series 250,000 BTU Natural Gas Heater delivers fast premium heating performance for years of reliable, long-lasting comfort..
CORROSION PROTECTION: The Universal H-Series boasts exceptional protection against corrosion and premature failure caused by unbalanced water chemistry..
ENERGY SAVINGS: The efficient, industry-leading design reduces circulation pump run time to provide energy savings..
EASY-TO-USE: Intuitive front control panel provides easy operation, service and maintenance..

Increase power, performance, mileage and save gas: Cleans by not only the entire emissions and exhaust system, but the fuel system as well. Works with gasoline, ethanol and hybrid vehicles..
Save on expensive fuel system and emission control repairs: Regular use every 5,000 miles tunes-up the fuel, emissions and exhaust systems keeping them clean and preventing the CEL light from returning..
Will not void manufacturer’s new vehicle warranty: Specifically designed and safe to use on vehicles which have oxygen sensors and catalytic converters. Exceeds EPA compliance performance criteria..
Works on all fuel injected, direct injected, carbureted, turbo, GTDI, Ecotec and EcoBoost engines..
Clean fuel and exhaust systems reduce excess exhaust hydrocarbon, CO and NOX emissions and saves gas..

Increase power, performance, mileage and save gas: Cleans by not only the entire emissions and exhaust system, but the fuel system as well. Works with gasoline, ethanol and hybrid vehicles..
Save on expensive fuel system and emission control repairs: Regular use every 5,000 miles tunes-up the fuel, emissions and exhaust systems keeping them clean and preventing the CEL light from returning..
Will not void manufacturer’s new vehicle warranty: Specifically designed and safe to use on vehicles which have oxygen sensors and catalytic converters. Exceeds EPA compliance performance criteria..
Works on all fuel injected, direct injected, carbureted, turbo, GTDI, Ecotec and EcoBoost engines..
Clean fuel and exhaust systems reduce excess exhaust hydrocarbon, CO and NOX emissions and saves gas..

Increase power, performance, mileage and save gas: Cleans by not only the entire emissions and exhaust system, but the fuel system as well. Works with gasoline, ethanol and hybrid vehicles..
Save on expensive fuel system and emission control repairs: Regular use every 5,000 miles tunes-up the fuel, emissions and exhaust systems keeping them clean and preventing the CEL light from returning..
Will not void manufacturer’s new vehicle warranty: Specifically designed and safe to use on vehicles which have oxygen sensors and catalytic converters. Exceeds EPA compliance performance criteria..
Works on all fuel injected, direct injected, carbureted, turbo, GTDI, Ecotec and EcoBoost engines..
Clean fuel and exhaust systems reduce excess exhaust hydrocarbon, CO and NOX emissions and saves gas..

Fits hayward universal h-series low nox pool heater models h150fdn, h150fdp, h200fdn, h200fdp, h250fdn, h250fdp.
Also fits hayward universal h-series low nox pool heater models h300fdn, h300fdp, h350fdn, h350fdp, h400fdn, h400fdp.

Up to 90% energy efficient with zero emissions and cost effective, low maintenance operation.
Made from durable anodized aluminum body with a brushed stainless steel trim and narrow profile.
All Infratech heaters are UL/CUL listed for Indoor / Outdoor use, and available in a variety of lengths and colors.
All SL-Series heaters are compatible Infratech Value and Custom Controls.
All components proudly made in the USA and supported by Infratech’s exclusive Three Year Warranty.

Up to 90% energy efficient with zero emissions and cost effective, low maintenance operation.
Made from durable anodized aluminum body with a brushed stainless steel trim and narrow profile.
All Infratech heaters are UL/CUL listed for Indoor / Outdoor use, and available in a variety of lengths and colors.
All SL-Series heaters are compatible Infratech Value and Custom Controls.
All components proudly made in the USA and supported by Infratech’s exclusive Three Year Warranty.