INDEPENDENTLY TESTED

Numbers that didn't come from our kitchen.

Pretty AC Cover-up was evaluated at the Center for Mechanical Design and Technological Innovation (CDMIT) a research lab inside UNAM's Faculty of Engineering under sealed room conditions, against an uncovered baseline.

Independent lab

Run by UNAM engineers at CDMIT, not by us. Methodology and instrumentation reviewed in a peer engineering context.

Multi-hour testing

Three hours of continuous cooling per scenario in a 1496 ft³ sealed enclosure, with five temperature sensors and continuous current monitoring.

Compared to uncovered

Every cover position we sell was measured against the same mini-split running with no cover at all so the comparison is honest.

REPORT
Identification of the Thermal
Stabilization Time of Pretty System
CONDUCTED AT
CDMIT · Facultad de Ingeniería, UNAM
PREPARED FOR
Hibrids LLC
YEAR
2023
UNAM LAB RESULTS

The data

plain and simple.

A sealed room. Five sensors. Three cover positions plus an uncovered control. Three hours per test. Here are the numbers that mattered.
COOLING DELTA
0.09°F
Difference in final room temperature between an uncovered mini-split and one with Pretty AC Cover-up at 4-inch spacing.
36.66°F uncovered vs. 36.55°F covered.
STABILIZATION TIME
1h 40m
For the room to reach a stable cooled temperature with the cover at 4 in.— within the same operating range as uncovered.
CURRENT DRAW
Low ·steady
No fluctuations or restart cycles during stabilization. The unit ran on its normal cycle.
TEST ENVIRONMENT
1446ft³
Sealed enclosure (10.6 × 11.2 × 12.2 ft) with 5 temperature & humidity sensors and continuous current monitoring.
BOTTOM LINE
Same cooling.
Same efficiency.
Better wall.
COMMON QUESTIONS

The honest answers

Everything we hear from people considering a cover-up and what the lab data says back.
  • 01

    Will the cover-up make my AC work harder?

    No. Installed at the recommended 4-inch distance — which the included hardware sets automatically — your mini-split runs the same as it would uncovered. Independently confirmed in UNAM lab testing: current draw stayed low and steady, with no extra cycling.

  • 02

    Will it raise my electricity bill?

    No. In testing, energy use with the cover-up was identical to the uncovered unit: normal, steady, with no additional strain. The 4 inch gap is the whole reason — it keeps the unit on its native operating cycle.

  • 03

    Will it cool as fast and reach the same temperature?

    Yes. The lab measured a final temperature difference of just 0.09 °F between covered and uncovered runs — well inside the margin you'd feel. Stabilization time was 1h 40m covered vs. 2h 44m uncovered, both within the unit's normal range.

  • 04

    Do I need an HVAC technician to install it?

    No. The cover mounts to the wall around your AC it doesn't touch the unit's electrical or refrigerant lines. Most homeowners install it in minutes.

  • 05

    Can I still clean and service my AC?

    Yes. The front panel lifts off the frame whenever you need access. Clean the filter, wipe down vents, or have a technician service the unit as usual then snap the panel back on in seconds.
THOUGHTFULLY DESIGNED

Breathe in. Breathe art.

A cover-up that doesn't ask your AC to give anything up.

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