What this site is, and is not

Who writes this

Andrew Flores is responsible for this site's research, calculations, source verification, and corrections. Every registered number on these pages comes from a named publisher with a retrieval date, documented arithmetic, or an assumption written out with its reasoning and range.

The site is published by Nathan Management, a California publisher of single-purpose calculators. No manufacturer, installer or trade body reviews these pages, and nobody pays to appear on them.

Why it was built this way

Most pool heating calculators on the web ask you for a BTU figure and multiply it by a price. That is not a calculation — the BTU figure was the hard part, and if you already had it you did not need the page. The calculators here start from measurements you can take with a tape measure and a thermometer, and derive the rest.

The second difference is that every default number is either traceable to a named publisher with a retrieval date, or labelled on the page as an assumption with its reasoning and range. A cost anchor that was invented is worse than no cost anchor at all, because it looks authoritative.

What it cannot do for you

• It is not an engineering design. A real heater installation involves gas supply capacity, electrical service, combustion clearances, bonding and local code, and none of that is arithmetic.
• It is not a quote. Installed prices are local and this site does not publish one.
• It is not a guarantee of a temperature or a bill. It runs on climate averages, and your weather is not an average.

Use it to walk into a contractor conversation knowing roughly what size of equipment your pool needs and what the running cost difference between the options actually is. That is a genuinely useful position to be in and it is what the site is for.

How the numbers are kept honest

Every figure lives in one registry file. Pages cannot print a number that is not in it — the build fails instead. That constraint is the reason the methodology page can list every figure on the site exhaustively rather than approximately.

Four more checks run before anything is published. Each substantive page is compared against every other page on the site for overlapping phrasing, and the build stops if two pages have drifted into saying the same thing. No page may render the placeholder tokens a program emits when arithmetic has gone wrong; one of those reaching a reader is treated as a build failure, not a cosmetic bug. The methodology table is verified to contain one row per registry entry, so a figure cannot be used on a page while quietly missing from the sources list. And the published pages are scanned for advertising and analytics code, because the privacy page states that none runs and a policy that contradicts the shipped code is worse than no policy.

Why a calculator rather than an article

Pool heating is a subject where general advice is nearly useless. "Heat pumps are cheaper to run" is true and tells you nothing about whether a heat pump can hold your pool in April, or how much bigger it needs to be than the nameplate suggests, or whether the install premium repays inside the time you plan to own the house. Those answers depend on the surface area of your particular pool, the humidity where you live, how much of the regional wind your fence stops, and what your utility charges for the last kilowatthour on your bill.

An article cannot carry that. A calculator can, provided it derives the quantities the reader does not know instead of demanding them as inputs. That is the whole design principle here: the only things you are asked for are things you can measure, look up on a bill, or decide.

What is deliberately missing

There is no product database, no "best pool heater of the year" list, and no affiliate link. Those pages exist in quantity elsewhere and they are usually ranked by commission rather than by fit. There is also no installed-price table, because installed pool heater prices are set by your gas run, your electrical panel and your local labour market, and a national average for them would be a made-up number wearing a suit.

Where a figure genuinely cannot be sourced — and several here cannot — the site says so on the page and puts the number in your hands rather than pretending to authority it does not have.