Send a correction

Two people keep this catalog, working from manufacturer documentation and public owner discussion. Nobody here installs equipment for a living, which means the failure mode is a number copied from a marketing page instead of a submittal sheet. If you have caught one of those, it is worth an email — an installer who has hung forty of these knows things the documentation does not say.

What people usually write in about

• A spec that does not match the manufacturer's submittal sheet: precharge length, maximum lineset run, minimum circuit ampacity, maximum fuse size.
• A voltage listed as 115V on a SKU that really wants 208/230V. That one changes whether the buyer needs an electrician, so it gets fixed the same day it is confirmed.
• A low-ambient figure that is an “operates down to” claim rather than a rated capacity at that temperature. The two get printed in the same typeface and mean very different things in February.
• A model discontinued or superseded by its R-454B replacement. The whole category is mid-refrigerant-transition and dead SKUs outrun our noticing them.
• Warranty fine print that changed — registration windows, what the compressor term actually covers, whether a licensed installer is a condition of any of it.
• A brand or a form factor that is missing. There are 50 systems from 20 brands across 7 form factors here, and the thin sections are ceiling cassettes (1) and concealed-duct units (1).
• Field reports from people who install these: which control boards come back, which flare joints weep at the condenser, which distributor answers the phone about a warranty part.

What happens to it

The message goes to the two of us by email. There is no ticket system, no support desk, and no office. A claimed correction gets checked against the manufacturer's own submittal or spec sheet before the catalog moves, and against an AHRI or NEEP listing when the number in dispute is rated capacity at a stated outdoor temperature. If the correction holds, the figure changes and so does the refresh date on the sourcing page.

When nobody publishes a figure — and a handful of systems here have no published HSPF2 at all, while most are sold through channels that publish no star rating — the field stays blank. A blank is a true statement about what is knowable. An interpolated efficiency number is not, and it would be indistinguishable from the real ones once it was in the table.

No manufacturer, distributor, or retailer pays to be in here, and none can pay for a position in a sort. They are welcome to write in with a correction like anyone else, on the same terms: published evidence moves a number, a request does not. The full method is on how this site works.

Three things this site cannot do for you

Size your system. BTU per square foot is a shopping heuristic, not a load calculation, and this catalog knows nothing about your envelope, your window area, or your design temperature. Oversizing is the most common and most expensive mistake in the category; the sizing guide explains why short-cycling costs you comfort and dehumidification both.

Quote your install. Every price here is equipment only, and the labor is usually the larger half of the invoice. What that half depends on — lineset run, electrical work, permit, who is licensed to touch refrigerant in your state — is laid out in the cost guide, but only a contractor standing in your house can price it.

Be warranty or technical support. A unit that is throwing an error code or has a leaking coil needs the manufacturer's support line and the installer who commissioned it. Registration deadlines are real and often short, so that call is more urgent than this form.