DoesTheMath

DIYCOOL ACIQ-50G-HP-WH vs Midea US3-RSJ-15/190RDVN3-L4: which uses less energy?

At the medium draw pattern the DIYCOOL ACIQ-50G-HP-WH and the Midea US3-RSJ-15/190RDVN3-L4 use the same energy, 866 kWh a year each, on the same federal test. Both are filed as an electric tank, so the comparison holds; what separates them is below. Enter your ZIP to price either one on your own rate.

Side by side

Compared within one class only: models filed as an electric tank at the medium draw pattern.

Filed and computed figures
DIYCOOL ACIQ-50G-HP-WH Midea US3-RSJ-15/190RDVN3-L4
UEF (Uniform Energy Factor) 3.75 3.75
Energy use per year (kWh) 866 866
First hour rating (gal) 69 71
Rated storage volume (gal) 47 46
Installed cost range $3,089–$4,419 $3,057–$4,409
ENERGY STAR certified yes yes
Sound level (dB) 49 49
Refrigerant R-134a, GWP 1430 R-134a, GWP 1430
On the market since 2024-05-30 2026-06-30
DOE CCD · 2026-09-19

What it costs to run

Enter your ZIP to price both units on the same rate where you live.

Reliability

Not published: Reliability, failure rates and each model’s actual warranty term.

The registries these figures come from certify energy performance under a federal test; none of them records how long a unit lasts or how often it fails, so this page does not rank the two on reliability.

What is here instead:

  • The filed efficiency, capacity and tank size of both models, side by side below.
  • Both are ENERGY STAR certified, which requires a manufacturer warranty of at least six years; the actual term for each model is not published.
  • Time on the market, as filed with ENERGY STAR: the DIYCOOL ACIQ-50G-HP-WH since 2024-05-30, the Midea US3-RSJ-15/190RDVN3-L4 since 2026-06-30. A sale date, not a lifespan.

Which should you pick?

  • Pick the DIYCOOL ACIQ-50G-HP-WH if its price or availability suits you — on energy the two are level.
  • Pick the Midea US3-RSJ-15/190RDVN3-L4 if you need more hot water in your busiest hour: it lists a first hour rating of 71 gallons against 69.
  • Neither if your household's busiest hour needs more than 71 gallons of hot water — neither lists more. Check whether a 50-gallon heater is enough.

Each model on its own

Analytics cookies

We count page views without cookies for everyone, and that counter is what we use to decide what to build. Google Analytics is separate: it uses cookies to record how a page was used, and it loads only if you allow it. Decline and the site works exactly the same. What we collect.