Universal HC Series Heater 400,000 BTU - Dual Fuel

Q: Why is write if

Q: Does this heater work with a remote?

Q: I see that the HDF400 has a smaller footprint than the FDN400. Other than size what's the difference? I need a 400,000 BTU heater one way or another. Space is an important consideration for me. Also, how much space must there be between the heater and the wall (back of the chimney) to work properly? Thanks in advance!

Q: I am trying to replace an H150 older unit. Which newer heater is the right choice?

Q: how do I register the warranty card

Q: For a 494 sq ft surface area, 15000 gallon volume, 60 F ambient, no wind, how long will it take to heat to 90 F with a 200,000 btu / hr gas fired unit? Is the HC series meant for direct exposure in ambient? What is the minimum waterflow rate through the HC series, 200,000 btu / hr unit? Any special ordering instructions for salt water pool? For out door installation, is an exhaust pipe required?

Q: What size pool heater do I need for a 12,000 gallon above ground pool?

Q: my heater keeps blowing the IBC board i need help trouble shooting this problem

Q: good morning, so we installed a HAY-15-7745 but when the filter kicks on the heater comes on with out the app asking to to come on. Any ideas why ?

Q: My pool was completed 2022 by Omnia outdoors Georgetown Texas. They are now out of business. I wanted to check if my heater HDF-400 is registered. S/N 21132112509249001

Q: I registered my HDF 400 pool heater warranty but cannot find it on the website. Registered warranty heater May 25, 2024. Purchased heater from Brazos Valley Pools & Spas May 22, 2024. Serial number: 21132310551322001

Q: We had pinch a penny install our hdf400 heater back in June of 2024 and now it puffs hot air for about 15 seconds as it trys to ignite and then shuts off to repeat the cycle again without staying on. You can feel puffs of hot air come out but it won't ignite. We had our tank refilled thinking it was from lack of fuel and it is still failing to fire up. What should I try next that will be covered by warranty?

Q: Why is it Hayward shows products here without sufficient necessary information about it? A dual fuel pool heater for example, Which fuels? Electric, Propane. Natural Gas? All Propane and Natural gas can use either, So the assumption is, the Dual Fuel is Heat pump or other electric and gas???

Q: We have a 10-year old H400FDN that has failed. I have been told that this model has been discontinued. Is the H400FDN I see listed on your site the same as our model?

Q: Hello, I'm a Certified General Contractor in Tallahassee, Florida building a new construction RV/Garage/pool house along side a separate pool builder. The pool builder installed an HDF400 heater on a concrete pad with the exhaust facing the side garage wall and a vinyl window at a distance of approximately 14" from exhaust to vinyl window frame. Reading through the manufacturer specifications it says "Side Clearance - 12." Is this side clearance of 12" applicable to the exhaust side of the heater and its distance to combustible materials? Thank you.