Hayward Pool Heater Specs — BTU Ratings & Efficiency Table
Hayward pool heater datasheet summary: model-by-model BTU ratings, efficiency and COP from official sources, linked line by line — with sizing context against the industry formula.
Quick answer
Hayward's published heater lineup covers 5 models across 2 product lines (gas, heat pump), spanning 50,000 to 399,900 BTU/hr. Gas models are rated by fuel input — divide by the stated efficiency (82% federal floor at minimum) for the heat actually delivered. Heat pump figures are delivered heat output, rated at warm-air test conditions. Check any model against your pool's requirement with the BTU calculator.
Manufacturer datasheet · 2026-10-31Hayward heater lineup at a glance
Hayward keeps the lineup focused on 2 fuel paths rather than spreading across every category — the table below is short enough to compare against your required BTU in one read.
Every figure below traces to an official Hayward source (linked per table); anything the sources don't state is marked "(to be verified)" rather than guessed. To see whether a given BTU rating fits your pool, run the BTU calculator first.
Hayward Universal H-Series (Natural gas)
Hayward's flagship gas line (Low NOx); H-series SKUs are being superseded by HS-series on hayward.com.
| Model | Rated BTU/hr | Efficiency / COP | Notes |
|---|---|---|---|
| H250FDN | 250,000 input | (to be verified) | Natural gas, Low NOx, cupro-nickel heat exchanger standard, 120/240V, flow 25-125 GPM (73 kW). Official product page verified 10-31. |
| H400FDN | 399,900 input | 84% | ≈400,000 BTU/hr input class, 84% thermal efficiency, cupro-nickel exchanger, flow 30-125 GPM. Per official H-Series service/installation manual. |
| H200FDN | 200,000 input | (to be verified) | 200,000 BTU/hr input, 166,000 BTU/hr output stated on official product listing. |
| H135 | (to be verified) | (to be verified) | Above-ground pool gas heater — capacity not stated on captured pages (to be verified). |
Hayward HeatPro (Heat pump)
Hayward's heat pump line with titanium heat exchanger; heat/cool capable on current models.
| Model | Rated BTU/hr | Efficiency / COP | Notes |
|---|---|---|---|
| W3HP50HA2 | 50,000 output | (to be verified) | 50,000 BTU/hr, 14 kW, 208/230V, titanium heat exchanger, flow 16-25 GPM. COP not published on official product page (to be verified). |
How to read these specs against your pool
Gas-fired models in the table are rated by fuel input — the heat that reaches your pool is at least 82% of that (federal floor, 10 CFR 430.32), and datasheet efficiency figures may be higher. The sizing guide shows how to convert.
Heat pump ratings are heat output at warm-air test conditions; real output falls with air temperature, so shoulder-season swimmers size one step up. The heat pump vs gas calculator prices the difference at your rates.
Three practical checks before buying: first, confirm the required capacity with the BTU calculator (wind, shade and a solar cover move it); second, match the rating type — don't compare a gas input figure against a heat pump output figure; third, verify the exact model against the official Hayward datasheet and your installer's gas-line or electrical assessment, because installation constraints, not the spec table, decide what can actually be connected.
Then estimate what the model costs to run in the running cost calculator. This page is independent — no affiliation with Hayward; brand names are trademarks of their owners.
FAQ
Where do these Hayward specifications come from?
Every figure is captured from Hayward's own published material — official product pages, datasheets and installation manuals — with the source link shown under each table and a capture date. Nothing on this page comes from retailer listings or third-party claims about Hayward products.
Why do some fields say "(to be verified)"?
When Hayward doesn't publish a number for a field (a COP value, for example), this page leaves it marked "(to be verified)" instead of estimating it. The missing figure changes nothing about the ratings that are published — and the BTU calculator works from capacity, which every model states.
How do I compare Hayward with another brand?
Compare the same rating type: input BTU/hr against input, output against output, and convert gas input to delivered heat at the stated efficiency. All brand pages on this site follow the same table format from the same capture discipline, so brand pages are directly comparable — that is the point of running them on one neutral site.
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