Coates Pool Heater Specs — BTU Ratings & Efficiency Table
Coates 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
Coates's published heater lineup covers 3 models across 1 product line (electric resistance), spanning 37,532 to 122,832 BTU/hr. Electric resistance models deliver essentially all rated power as heat. Check any model against your pool's requirement with the BTU calculator.
Manufacturer datasheet · 2026-10-31Coates heater lineup at a glance
Coates keeps the lineup focused on a single fuel path 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 Coates 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.
Coates Electric pool & spa heaters (Electric resistance)
Electric resistance heaters in three kW classes; output follows kW × 3,412 BTU/kWh; single- and three-phase available on large models.
| Model | Rated BTU/hr | Efficiency / COP | Notes |
|---|---|---|---|
| 12411ST (11 kW) | 37,532 output | (to be verified) | 11 kW = ≈37,500 BTU/hr (kW × 3,412); 240V single phase, flow switch, 15-80 GPM, spa/pool class. |
| CE 18KW | 61,416 output | (to be verified) | 18 kW = ≈61,400 BTU/hr; 240V, 44 A single phase, 20-80 GPM, adjustable to 104°F. |
| 12436PHS (36 kW) | 122,832 output | (to be verified) | 36 kW = ≈122,900 BTU/hr; 240V single phase 153 A or 208V 3-phase 100 A; 20-80 GPM; sized for large pools. |
How to read these specs against your pool
Electric resistance models have no flue loss — essentially 100% of the rated power becomes water heat — but every one of those BTU is billed at electricity rates, which is why resistance heat suits small pools, spas and booster duty rather than whole-season heating. The running cost calculator makes the comparison concrete at your kWh price.
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 Coates 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 Coates; brand names are trademarks of their owners.
FAQ
Where do these Coates specifications come from?
Every figure is captured from Coates'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 Coates products.
Why do some fields say "(to be verified)"?
When Coates 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 Coates 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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