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Hayward Low NOx Universal 400K BTU Propane Heater For In-Ground Pools
   Model: H400FDP
Hayward Low NOx Universal 400K BTU Propane Heater For In-Ground Pools
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    configure product and determine total cost.

Base Price:  $3,821.40
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    NOTICE:  Southern CA and TX law requires Low Nox units. 
    Low Nox heaters are required when installing a new Natural Gas heater in Texas and the following California Counties - Ventura, Los Angeles, Orange, Riverside, and San Bernardino. CA and TX residents must purchase the Low-Nox model.

    GAS Pool Heaters – Discover quality alternative heating options
    to be sure that Gas Heating is the right choice for your pool…

    Were you aware propane or natural gas has the highest operating
    cost, and is the least efficient / cost effective way to heat a pool?

    If you require rapid heat up, constant temperature regardless of
    outside temperature, or you are heating a spa or hot tub, then the
    gas heater below may be right for you.

    ALERT » View other higher efficiency options
    Side-by-side major heating systems comparison guide reviews
    the details on Gas Heaters, and how they compare to the two
    other major heating methods – Heat Pumps and Solar

    HELP » Contact Customer Support
    Toll-Free help line offering system selection support 


    Hayward NOx pool gas heaterUniversal H-Series Low NOx - For In-Ground Pools and Spas

    Presenting Hayward's world-class heater with an Earth-friendly conscience…
    the Universal H-Series heater!

    While all Hayward H-Series heaters are energy-efficient, the Universal H-Series Low NOx heater has an 83-84 percent industry-leading thermal efficiency and complies with all current California and Texas air quality emission standards. The low NOx emission makes it a perfect choice for the environmentally concerned pool owner.

    NEW Hayward Universal H-Series Low NOx heater combines industry-leading hydraulic performance; environmentally responsible low NOx emissions and a standard cupro nickel heat exchanger with a low profile appearance, lighter weight design, independent left or right side electric, water and gas connections plus 2" x 2 1/2" CPVC union connections to provide the ultimate installation flexibility for new or existing equipment pads.

    It also includes a forced draft system that constantly moves air through the combustion chamber at a precise flow rate. As a result, all outside weather variables that can affect the heating performance, such as wind conditions, are eliminated - without having to install a high-wind stack.

    NOTE: The Hayward Universal H-Series heaters meet the NOx Emission standards set by the California South Coast Quality Air Management Commission for 2001 and the Texas Natural Resource Conservation Commission Code.

    Product Features:

    Forced draft system constantly moves air through the combustion

    Our patented single header "V" baffle design heat exchangers allow
    for long life, fast heating and virtually no condensation. All Hayward
    heat exchangers are now constructed with highly resilient Cupro
    Nickel for greater durability and longevity.

    Easy-to-read L.E.D. digital Control Panel provides digital temperature
    readout and diagnostics for quick identification of components that
    might need service.

    New polymer header provides superior hydraulic performance to save
    energy and protect against the damaging effects of erosion from high
    flow conditions for improved reliability.

    Designed for today's larger diameter plumbing systems with
    2" x 2 1/2" CPVC unions.

    Product Warranty: 1 year limited warranty

    Product Specifications:

    Electronic Ignition, Dual Thermostat
    Model Number
    BTU Input
    Gas Type
    Heater Width
    Ctn. Qty.
    Ctn. Width
    165 lbs.
    165 lbs.
    36 1/2"
    197 lbs.
    36 1/2"
    197 lbs.

    Hayward H Series Gas Heater Overall Dimensions:

    Hayward H Series gas heater dimensions


    Download PDFs »  

    Hayward H Series Operation Manual 
    Hayward H Series Installation Manual

    Hayward Technical Specifications and Sizing

    Product Manufacturer:
    Hayward Pool Products, Inc.


    What is NOx?
    NOx is the generic term for a group of highly reactive gases, all of which contain nitrogen and oxygen in varying amounts. Many of the nitrogen oxides are colorless and odorless. However, one common pollutant, nitrogen dioxide (NO2) along with particles in the air can often be seen as a reddish-brown layer over many urban areas.

    Nitrogen oxides form when fuel is burned at high temperatures, as in a combustion process. The primary sources of NOx are motor vehicles, electric utilities, and other industrial, commercial, and residential sources that burn fuels

    Where does it come from?
    NOx form when fuel is burned at high temperatures, as in a combustion process. The primary sources of NOx are motor vehicles, electric utilities, and other industrial, commercial, and residential sources that burn fuels. Utilities: 27% Motor Vehicle: 49% Industrial/Commercial/Residential: 19% All Other Sources: 5%

    NOx is one of the main ingredients involved in the formation of ground-level ozone, which can trigger serious respiratory problems. NOx:

    Reacts to form nitrate particles, acid aerosols, as well as NO2, which
    also cause respiratory problems.
    Contributes to formation of acid rain.
    Contributes to nutrient overload that deteriorates water quality.
    Contributes to atmospheric particles, that cause visibility impairment
    most noticeable in national parks.
    Reacts to form toxic chemicals.
    Contributes to global warming.

    NOx and the pollutants formed from NOx can be transported over long distances, following the pattern of prevailing winds in the U.S. This means that problems associated with NOx are not confined to areas where NOx is emitted. Therefore, controlling NOx is often most effective if done from a regional perspective, rather than focusing on sources in one local area.

    NOx Emissions are increasing
    Since 1970, EPA has tracked emissions of the six principal air pollutants - carbon monoxide, lead, nitrogen oxides, particulate matter, sulfur dioxide, and volatile organic compounds. Emissions of all of these pollutants have decreased significantly except for NOx, which has increased approximately 10 percent over this period.

    Health and Environmental Impacts of NOx
    NOx causes a wide variety of health and environmental impacts because of various compounds and derivatives in the family of nitrogen oxides, including nitrogen dioxide, nitric acid, nitrous oxide, nitrates, and nitric oxide.


    *Due to ongoing price changes, a quote is required at this time for the following states: AK, HI, MT, WY, DC.

    IMPORTANT Delivery Note:
    Delivery truck driver will require handling assistance to be provided by purchaser when unloading unit from truck. Liftgate service available at an additional fee.

    Note: All gas heaters are shipped directly from the factory and are non-returnable - all sales are final.

    NOTICE:  Southern CA and TX law requires Low Nox units.  RaPak is certified for low NOx emissions.

    Note: All product performance tests and claims are that of the manufacturer, not The Energy Supermarket. 

    Processing and Delivery Information: Please allow Processing Time as stated above for your order, plus standard transportation delivery time. Orders placed after 2PM EST may not begin processing until the next business day. Please call for Rush Processing and/or Rush Shipping options.

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