2024 Lo hayward heater

The Universal H-Series Low NOx heater has an 84 percent industry-leading thermal efficiency and complies with all current California air quality emission standards. The low NOx emission makes it a perfect choice for the environmentally concerned pool owner. Enjoy a warmer pool this season without your fuel costs skyrocketing.. Chicago service center uscis

400,000 BTU heating capacity. Fits directly against walls, fences, or other equipment. Competitive heaters require 6–12" wall clearance. Ultra-compact frame for easy drop-in replacement. Dual-fuel tech switches between natural gas and liquid propane. Allows for in-field conversion with a quarter-turn.Shopping for Hayward Universal H-Series H500 Low Nox Pool Heater, 500,000 BTU, Propane Gas? Doheny's has it in stock now at the guaranteed lowest price. Enjoy FREE Expedited Shipping.When ordering parts, include the complete pool heater model number listed on the unit’s rating plate, located near the junction boxes on the exhaust side of the heater. (Example: HDF400) All ser- vice must be performed by a qualified technician. View and Download Hayward HDF400 installation & operation manual online.H Series Low NOx 200K Pool Heater Natural Gas. HEATER-UNIVERSAL 150K NATURAL LONX. Hayward H-Series LO NOx Heater 250,000 BTU Natural Gas. Hayward H-Series LO NOx Heater 250,000 BTU Propane Gas. Hayward H-Series LO NOx Heater 350,000 BTU Propane Gas. Hayward H-Series LO NOx Heater 400,000 BTU Natural Gas. …This video goes over resolving a likely cause to the LO error code that comes up on Hayward H series pool heaters. Here's a link on the part you will likely...Hayward H250 Quick Manual (4 pages) Universal H-Series POOL AND SPA HEATERS. Brand: Hayward | Category: Swimming Pool Heater | Size: 0.8 MB. Hayward H250 Pdf User Manuals. View online or download Hayward H250 Installation, Operation & Service Procedures, Installation, Operation And Service Manual, Quick Manual.The SF code on your Hayward heater’s display stands for “Stack Flue Sensor Failure.”. This code indicates that there’s a problem with the sensor responsible for monitoring the flue gases in your heater. Flue gases are the byproducts of combustion, and monitoring them is crucial for safety reasons. Common Causes of SF Code.3 Oct 2017 ... My Hayward H100ID stopped heating the swimming pool water. I spent 3 afternoons and evenings of my free time pulling my hair out trying to ...6 Aug 2021 ... Pool Heater Service Call - Hayward Heat Pro Heat Pump with LP Error on display. LP is Low Pressure. We found a leak on the filter dryer, ...Pool Heaters - Hayward Pool Products | Hayward Pool Products. Home. Products. Residential: Heaters. Hayward has an advanced lineup of heaters and heat-cool …18 Oct 2020 ... was getting CE code, aka Communication Error. Replaced main board, display board, and display panel.I have a Hayward 300k BTU heater. It's light comes on and shows low. When water pressure increases the "Lo" sign goes away but I can't get the mode to switch to pool.I have a Hayward 300k BTU heater. It's light comes on and shows low. When water pressure increases the "Lo" sign goes away but I can't get the mode to switch to pool.Problem Possible Cause Possible Solution; Heater cycles on & off: 1. Filter or pump baskets are dirty. 2. External bypass is out of adjustment. 3. Internal bypass is broken or stuck.PitschPlumbing. Generally, LO refers to the pressure switch, water pressure. This can be caused by either the diaphram in the flow switch has failed or the filters is clogged and/or pump is unable to make enough pressure to make the switch. Open the front panel of the heater and look up in to the right. You will see a round part with 2 wires ...I think you have your answer right there. If there isn't enough flow through the heater and it runs, the water will boil and can melt pipes. The flow requirement for a salt cell is much lower (pretty much "is water passing through). You'll just have to run your pump at a higher speed to run the heater.Step 2: Place the other meter lead on the Red wire terminal of the High Limit Switch (the one coming from the Water Pressure Switch) and check for 120 VAC. If not present, replace Wire Harness. If okay, proceed to Step 3. Heater Does Not Ignite- Blower Comes On. Step 3: Place meter lead on the Yellow wire terminal of the first High Limit Switch ...Jul 25, 2017 · Available in 150,000, 200,000, 250, 000, and 400,000 BTUs, the Universal H-Series heater can raise the temperature of an 800-gallon pool 30 degrees in less than an hour—you’ll feel the benefits the moment you step into the water. The Hayward Universal H-Series Low NOx can be added to inground pool kits sold by Pool Warehouse! Adjust the water flow or call a professional if the pressure is too low. Clean the Filter: A dirty or clogged filter can cause Hayward Heater CE Code errors. Clean the filter thoroughly and replace it if necessary. This will improve the heater’s efficiency and prevent future issues. Inspect the Ignition System: If the above steps do not ...Hayward H250 Quick Manual (4 pages) Universal H-Series POOL AND SPA HEATERS. Brand: Hayward | Category: Swimming Pool Heater | Size: 0.8 MB. Hayward H250 Pdf User Manuals. View online or download Hayward H250 Installation, Operation & Service Procedures, Installation, Operation And Service Manual, Quick Manual.When ordering parts, include the complete pool heater model number listed on the unit’s rating plate, located near the junction boxes on the exhaust side of the heater. (Example: HDF400) All ser- vice must be performed by a qualified technician. View and Download Hayward HDF400 installation & operation manual online.Professional Service: If you’ve tried the above steps and the LO code persists, it’s advisable to contact a professional pool heater technician. They can diagnose the issue more accurately and perform any necessary repairs. Preventing Future LO Codes. To avoid encountering the Hayward Heater LO Code in the future, consider …The Universal H-Series Low NOx heater has an 84 percent industry-leading thermal efficiency and complies with all current California air quality emission standards. The low NOx emission makes it a perfect choice for the environmentally concerned pool owner. Enjoy a warmer pool this season without your fuel costs skyrocketing.May 22, 2023 · Pool heaters work very straightforwardly: they generate heat to raise the water temperature. As long as they have a reliable water supply, the heater will not overheat. That’s why your unit will display the LO code when there’s something wrong with the water supply. The LO code signifies that there’s a low water pressure condition. […] Apr 21, 2009 · Lo code new Hayward Heater. CCBRENNER; Jun 28, 2023; Everything Else; Replies 4 Views 183. Everything Else Jun 28, 2023. CCBRENNER. C. B. Constant issues with Hayward ... A pool heater is an essential component of any swimming pool, especially in areas where the weather can get chilly. If you own a Hayward pool heater and it breaks down, you need to...Pool Heaters - Hayward Pool Products | Hayward Pool Products. Home. Products. Residential: Heaters. Hayward has an advanced lineup of heaters and heat-cool …The Hayward Universal H-Series gas heater is one of the most energy-efficient Pool and Spa heating solutions on the market! Its ground-breaking hydraulic design reduces pump circulation run time, giving you an energy savings of up to 18%! This unit is perfect for the environmentally conscious Pool and Spa owner thanks to its Low NOx capabilities.The SF code on your Hayward heater’s display stands for “Stack Flue Sensor Failure.”. This code indicates that there’s a problem with the sensor responsible for monitoring the flue gases in your heater. Flue gases are the byproducts of combustion, and monitoring them is crucial for safety reasons. Common Causes of SF Code.This water pressure switch is designed to use with Hayward Universal H-Series Low NOx pool heater models H150FDN, H150FDP, H200FDN, H200FDP, H250FDN, H250FDP, H300FDN, H300FDP, H350FDN, H350FDP, H400FDN, H400FDP.Hayward Heater LO code. Thread starter joeg679; Start date Jul 19, 2023; Jump to latest Follow Reply Forums. Equipment - Build, Use, and Repair. Pumps, Filters, and Plumbing . 1; 2; Next. 1 of 2 Go to page. Go. Next Last. J. joeg679 Member. May 28, 2017 21 NJ. Jul 19, 2023; Add bookmark #1 Hello, I was getting a Lo code on my heater …Hayward Pool Products Inc is a leading manufacturer of high-quality pool equipment, including pumps, filters, heaters, and cleaners. If you’re lucky enough to own one of their prod...INNOVATION MADE EASY. Hayward Commercial Aquatics offers a full range of industry-leading innovative products designed to work together as one total system to help every commercial pool perform at its absolute best. Our products set the technological standard while providing unmatched performance, efficiency, reliability, versatility and ease ...The heater core in the Chevy Astro van acts like a small radiator that the engine coolant passes through. If the van's heater has trouble working, you may need to replace the core....The SF code on your Hayward heater’s display stands for “Stack Flue Sensor Failure.”. This code indicates that there’s a problem with the sensor responsible for monitoring the flue gases in your heater. Flue gases are the byproducts of combustion, and monitoring them is crucial for safety reasons. Common Causes of SF Code.Ultimately, the choice between Pentair and Hayward pool heaters will depend on your individual needs and priorities. If energy efficiency and fast heating are your top concerns, Pentair may be the way to go. However, if durability and ease of use are more important to you, Hayward may be the better choice.1. Hayward Pool Heater Service Light LO; 2. Hayward Pool Heater Service Light CE; 3. Hayward Pool Heater Service Light IF; 4. Hayward Pool Heater Service Light AO; 5. Hayward Pool Heater Service Light BD; FAQ: What are the Hayward pool heater lockout settings? How to reset Hayward pool heater?Hayward salt systems are a popular choice for homeowners looking to maintain their swimming pool water in a clean and safe condition. These systems use salt to generate chlorine, e...You need to put the heater in STANDBY Mode to get the bO code on the heater display. Press the mode button once to get the heater in STANDBY Mode. First, press and hold on to the Down key. Then, press and hold down the MODE key as well. You need to keep holding both keys for about three seconds. At this point, the “bO” message should appear ...I was given a heater with the used pool I purchased. Previous owner indicated it worked, but leaked. I decided to see what was wrong. As it turns out there ...Lo code new Hayward Heater. CCBRENNER; Jun 28, 2023; Everything Else; Replies 4 Views 183. Everything Else Jun 28, 2023. CCBRENNER. C. B. Constant issues with Hayward H250FDN Heater for 2500 gallon Spa...now LO code. bobby2175; Jun 11, 2023; Everything Else; Replies 7 Views 219. Everything Else Jun 11, 2023. …The Hayward Universal H-Series gas heater is one of the most energy-efficient Pool and Spa heating solutions on the market! Its ground-breaking hydraulic design reduces pump circulation run time, giving you an energy savings of up to 18%! This unit is perfect for the environmentally conscious Pool and Spa owner thanks to its Low NOx capabilities.You need to put the heater in STANDBY Mode to get the bO code on the heater display. Press the mode button once to get the heater in STANDBY Mode. First, press and hold on to the Down key. Then, press and hold down the MODE key as well. You need to keep holding both keys for about three seconds. At this point, the “bO” message …Aug 21, 2023 · Check the Gas Valve. Start by ensuring that the gas valve is open and allowing the flow of gas to the pool heater. If the gas valve is closed or partially closed, the heater won’t receive the necessary fuel to ignite. Make sure the valve is fully open and functioning correctly. The Pontiac Grand Prix has a blower motor that is regulated with a fuse located in the fuse panel inside the glove box. If the blower motor in your Grand Prix is malfunctioning, yo...View online or download Hayward H400FDN Owner's Manual, Troubleshooting Manual. ... Hayward Manuals; Heater; H400FDN; Hayward H400FDN Manuals. Manuals and User Guides for Hayward H400FDN. We have 4 Hayward H400FDN manuals available for free PDF download: Troubleshooting Manual, ... LO" Code. 46. Pressure Switch Adjustment. …303. 159K views 5 years ago. Are you experiencing a LO code on your Hayward H-Series pool heater? If so, give this video a watch for a few basic tips on how to work through the issue yourself...If you own a pool, you understand the importance of a properly functioning pool pump. A Hayward pool pump is a popular choice for many pool owners due to its efficiency and reliabi...Faulty water temperature switch, malfunctioning vent pressure switch, and defective temperature limit switch are accountable for displaying the Hayward pool heater LO code. Also, the damaged flow switch diaphragm and clogged filter are responsible for showing this code on your pool heater. However, going through the article, you will learn all about reasons behind LO4 Jul 2019 ... Comments39 · How use your Pool Heater and possible errors · How To - Create your own Hayward Pool Gas Heater Vent · Universal H Series & ASM...#1. I have Hayward H150FDN Universal H-Series, Low NOx, 150,000 BTU, Natural Gas, Pool and Spa Heater and I am getting a LO code with is a flow problem. I …Universal H-Series ASME heater suited to every setup. Front single-panel access means service is quick and easy. BEST-IN-CLASS HEATING SPEED Universal H-Series ASME heaters boast industry-leading hydraulics, with the 500,000 BTU model achieving the fastest speed-to-heat in its class. Its quick and efficient operation meansHeater Steps to Turn On; Gas Pool Heater: 1. Ensure that the gas supply is turned on. 2. Turn the heater’s thermostat to the lowest setting. 3. Switch the heater on. 4. Gradually increase the temperature setting to your desired level. Electric Pool Heater: 1. Ensure the solar panels are clean and the valves are open. 2. Turn the system on. 3.Nov 8, 2022 · If you're looking for help fixing your Hayward Pool Heaters, look no further! Our comprehensive Hayward Pool Heaters error code guide will explain common iss... Fix: Have the owner get a filter replacement/cleaning. Another common water flow issue is an open heater bypass valve. A bypass valve is put in place near the intake to stop water from flowing through the heater when it's not in use. When in bypass, the heater's water flow switch (i.e., the pressure switch) should open, and the heater …Advertisement Most human beings much prefer a warm meal to a cold one, especially if they're in cold or wet conditions. Eating cold spaghetti or cold beef stew is definitely no fun...Hayward Pool Products Inc. is a leading manufacturer and distributor of swimming pool equipment and supplies. With over 80 years of experience, the company has been at the forefron...LO Code Pages 40-43 IF Code Pages 44-46 AC Code Page 47 AO Code ... Heater must then be in Spa or Pool Mode for operation. The heater will ... Hayward Part # …One of the most common calls we receive during season is the FLO error on a pool heater. Learn more about what causes this error and how we resolve it.1.3 Heater Cycling On And Off. 2 Troubleshooting Steps. 2.1 Check Gas Pressure And Fuel Supply. 2.2 Inspect Air Supply And Venting. 2.3 Ensure Proper Water Flow. 2.4 Clean Filters And Pump. 2.5 Adjust External Bypass If Needed. 3 Tips For Diagnosing Problems. 3.1 Follow The Heater Start Sequence.The flagship of our H-Series line, they combine industry-leading hydraulics, exceptional performance, energy efficiency, and reliability, with planet-friendly low-NOx emissions. Flexible connection options make them ideal for new or existing applications. Choose from 6 250,000, 400,000 and 500,000 BTU natural gas or propane models.Press the Up and Down button again to reset the desired maximum pool temperature. Finally, turn on the heater system, and the IF code problem should be solved. 2. Low Gas Pressure. Low and insufficient gas supply or gas pressure is the high possible reason behind your Hayward pool heater ignition failure.When ordering parts, include the complete pool heater model number listed on the unit’s rating plate, located near the junction boxes on the exhaust side of the heater. (Example: HDF400) All ser- vice must be performed by a qualified technician. View and Download Hayward HDF400 installation & operation manual online.The Lo on a Hayward heater means “low.” When the Lo setting is selected, the heater runs at a lower speed, which can help conserve energy. In some cases, the Lo setting may indicate a malfunction or another issue with the heater. If you notice your Hayward heater displaying an LO code, it is important to check the manual or contact customer ... Show pool professionals that sell/service these specific products (restricts search to include only companies that sell/service each item checked): Pool heater question. This is a raypak pool heater manifold. Have a water sw open code. Where’s the switch. There two sets of wires running to probes. Ones a thermometer and the other is this little brass plug with two terminals coming off it. I’ve removed it and it’s not a switch. Thoughts ?HU-429948972. 3 years ago. Hi I just hooked up a new 150,000 Hayward. With pump on low speed I get the LO code. So I put on high speed and LO code immediately goes away but then within 30 seconds I get HS code and shut down. 724-977-7371. Like.Residential Atmospheric Pool Heaters. Atmosheric heaters are the most common type of pool heater in the Raypak and Jandy Lines. Most Pentair & Hayward heaters come standard as Low NOx. Low NOx is required for 5 counties in Southern California only, and for all commercial heaters in Texas only. Atmospheric Pool Heaters.Jan 11, 2022 · Step 3: If yes, disconnect the p4 plug from the connection and take the voltage reading of pins 4 and 6. Here you will also get reading for 110-125 VAC. Step 4: In case you are getting the right voltage in both cases, it’s a must say that the fuse is blown and you need to replace it. Universal H-Series ASME heater suited to every setup. Front single-panel access means service is quick and easy. BEST-IN-CLASS HEATING SPEED Universal H-Series ASME heaters boast industry-leading hydraulics, with the 500,000 BTU model achieving the fastest speed-to-heat in its class. Its quick and efficient operation meansEnter a postal code to find the nearest Hayward authorized pool professional. Postal Code: How far from the above postal code do you want to search? Enter the miles in the box below. Minimum of 10 miles, maximum of 100. ... Heaters (not including Heat Pumps) Heat Pumps. Lighting. Pumps. Variable Speed Pumps. VS Omni variable-speed pumps. …Start heater again. Does low side pressure drop below 30 psi for R-22 unit or 80 psi on a R-410A unit? Figure C. Replace LP switch. See Note 2 below NO Abandon existing switch on Hayward R-22 units. Replacement switch is a screw on switch. Use a swivel tee on the low side access port. On Summit and R-410A (4T) Hayward units the existing switch ...Get the scoop on the 7 best parks in Los Angeles, plus recommendations on the best trails in each and what attractions and where to stay nearby. Southern California is home to grea...Welcome to the Hayward Universal H-Series and ASME Gas Pool Heater training video. This video is intended for authorized personnel only, qualified in pool an...This video goes over resolving a likely cause to the LO error code that comes up on Hayward H series pool heaters. Here's a link on the part you will likely...Dental braces are very expensive. The cost of dental braces can vary anywhere from $8,000 to $3,000 depending on the amount of work that is needed and the orthodontist. If you are ...Jan 11, 2022 · Step 3: If yes, disconnect the p4 plug from the connection and take the voltage reading of pins 4 and 6. Here you will also get reading for 110-125 VAC. Step 4: In case you are getting the right voltage in both cases, it’s a must say that the fuse is blown and you need to replace it. PitschPlumbing. Generally, LO refers to the pressure switch, water pressure. This can be caused by either the diaphram in the flow switch has failed or the filters is clogged and/or pump is unable to make enough pressure to make the switch. Open the front panel of the heater and look up in to the right. You will see a round part with 2 wires ...View online or download Hayward H400FDN Owner's Manual, Troubleshooting Manual. ... Hayward Manuals; Heater; H400FDN; Hayward H400FDN Manuals. Manuals and User Guides for Hayward H400FDN. We have 4 Hayward H400FDN manuals available for free PDF download: Troubleshooting Manual, ... LO" Code. 46. Pressure Switch Adjustment. …Professional Service: If you’ve tried the above steps and the LO code persists, it’s advisable to contact a professional pool heater technician. They can diagnose the issue more accurately and perform any necessary repairs. Preventing Future LO Codes. To avoid encountering the Hayward Heater LO Code in the future, consider implementing ...Learn the basics of tankless water heater installation and replacement, including the cost, materials and tools needed to get the job done. By clicking "TRY IT", I agree to receive...Hayward Insights provides expert advice, tips, and industry updates to help pool owners and enthusiasts with their swimming pool experience. Gain insight. Support. ... Phase Heaters: 1.0000: Platform: Square: Pool Type: In Ground: Product Dimensions: 37 " x 30.5 " x 33.6 "Product Height: 37 in: Product Length: 33.6 in: Product Weight: 245 lb:The tech did the install and ran the heater only for a few minutes to check for ignition and stuff. He had done some other plumbing work so he didn't want to run in too long, or the pool pump either, so that the PVC glue really had some time to cure. The heater is a 400,000 BTU Hayward Universal HC Series Model HDF400 Pool Heater.Check the Gas Valve. Start by ensuring that the gas valve is open and allowing the flow of gas to the pool heater. If the gas valve is closed or partially closed, the heater won’t receive the necessary fuel to ignite. Make sure the valve is fully open and functioning correctly.Potential drawbacks of the Hayward heater include: *Disconcerting burning-plastic smell when first started. I discount this as a protective coating that is burning off. ... *The "Service" light will come on, and the "Lo" message will be displayed when you shut down the heater if you wire the heater to an un-switched 220-Volt source. This is ...303. 159K views 5 years ago. Are you experiencing a LO code on your Hayward H-Series pool heater? If so, give this video a watch for a few basic tips on how to work through the issue yourself...

The Lo on a Hayward heater means “low.” When the Lo setting is selected, the heater runs at a lower speed, which can help conserve energy. In some cases, the Lo setting may indicate a malfunction or another issue with the heater. If you notice your Hayward heater displaying an LO code, it is important to check the manual or contact …. Menards outdoor plant stands

Sep 24, 2019 · Problem Possible Cause Possible Solution; Heater cycles on & off: 1. Filter or pump baskets are dirty. 2. External bypass is out of adjustment. 3. Internal bypass is broken or stuck. 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 ... PitschPlumbing. Generally, LO refers to the pressure switch, water pressure. This can be caused by either the diaphram in the flow switch has failed or the filters is clogged and/or pump is unable to make enough pressure to make the switch. Open the front panel of the heater and look up in to the right. You will see a round part with 2 wires ... 303. 159K views 5 years ago. Are you experiencing a LO code on your Hayward H-Series pool heater? If so, give this video a watch for a few basic tips on how to work through the issue yourself...Gainers Minim, Inc. (NASDAQ:MINM) rose 42.8% to $0.52 in pre-market trading. Minim recently said Nicole Hayward Zheng will be transitioning from... Don’t forget to check out our ...Follow the included steps to place the heater in bypass mode for external control. Step 1. Press the ‘MENU ICON’ button to place the heater in ‘STANDBY’ mode. Step. The ‘SPA’ indicator should illuminate & the display should show the Max Temp set point. Step 2. Press and hold the minus & plus buttons for 3 seconds.I have Hayward H150FDN Universal H-Series, Low NOx, 150,000 BTU, Natural Gas, Pool and Spa Heater and I am getting a LO code with is a flow problem. I have my intermatic timer set for 755am to turn on and give my equipment power, then at 8am the Hayward pump turn on.Dec 2, 2021 · How to fix it: Check that pool pump is receiving enough water. Ensure that your pool pump is sending water to the heat pump. For variable speed pool pumps, try putting the pump speed up a notch Check for any clogs or backups causing poor water circulation. The same is true if what you use is in your pool is the Raypak pool heater. Hayward makes a range of pool filters, and only some of these filters require backwashing. The filters that do require backwashing are often fitted with the Hayward Vari-Flo multip...Hayward H500FDN Universal H-Series Digital Low NOx Pool Heater; Natural Gas, 500000 BTU, 110/220 V, 60 Hz, 1-Phase, Cupro Nickel . Product Features. Totally managed flow provides exceptional corrosion resistance and erosion protection. Ideal for today’s salt-based electronic chlorination systems; 83% Thermal efficiencyShopping for Hayward Universal H-Series H500 Low Nox Pool Heater, 500,000 BTU, Propane Gas? Doheny's has it in stock now at the guaranteed lowest price. Enjoy FREE Expedited Shipping.303. 159K views 5 years ago. Are you experiencing a LO code on your Hayward H-Series pool heater? If so, give this video a watch for a few basic tips on how to work through the issue yourself...Remove front & rear panels Remove wires from limit switches. Step 13. Remove the 4 screws from the bottom of the front and rear panels and pull up and out to remove each one. Step 14. Use needle nose pliers to remove the 2 red wires from each of the high limit switches. Remove wires from water pressure switch.I have Hayward H150FDN Universal H-Series, Low NOx, 150,000 BTU, Natural Gas, Pool and Spa Heater and I am getting a LO code with is a flow problem. I have my intermatic timer set for 755am to turn on and give my equipment power, then at 8am the Hayward pump turn on.Some of the most reviewed products in HAYWARD Pool Heaters are the HAYWARD Universal H-Series Propane Gas 150,000 BTU Low NOx Pool Heater with 5 reviews, and the HAYWARD Universal H-Series Natural Gas 400,000 BTU Low NOx Pool Heater with 4 reviews. Related Searches. hayward pool heater.The Hayward 250 BU Lo-Nox natural gas heater is efficient and works quite well. More efficient than our old Hayward microvolt 250 BTU heater. The only drawback so far is the pressure limiter switch on the heater requires a 1 HP pump to work properly.The Hayward H-Series' Finn Plate cupro-nickel heat exchanger has special V-groove design for faster heating and longer life. Hayward Universal H-Series, Low NOx, 150,000 BTU, Natural Gas, Pool and Spa Heater delivers energy efficient heating to your pool's water that you can trust. Hayward Universal H-Series - Versatility & PowerChange the sand in a Hayward sand filter by washing the old sand through the drain plug using a garden hose and then replacing it with 300 pounds of 20-mesh swimming pool filter sa....

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