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MrCool DIY 5th Gen 12,000 BTU 115V
MrCool · DIY 5th Gen

MrCool DIY 5th Gen 12,000 BTU 115V

Model DIY-12-HP-C-115D25-O · DIY-12-HP-WMAH-115D25-O

SCORE6.9 / 10

Our default no-vacuum kit for a garage, shop or room on 115V, with a warranty that covers your own install and the line set. It makes 8,400 BTU/h at 5°F, less than cheaper flare units, and only 3,800 at -13°F.

Specs

SpecMrCool DIY 5th Gen 12,000 BTU 115V
Nominal size12,000 BTU
Voltage115V
Rated heat at 47°F12,000 BTU/h
Heat at 17°F8,500 BTU/h
Heat at 5°F8,400 BTU/h
Lowest heating temp-13°F
Max heat at lowest temp3,800 BTU/h
SEER223.5
HSPF2 (Region IV)10.2
Install typeQuick-connect
Line set in box25 ft
Max line run75 ft
Warranty covers owner installYes
Warranty, parts5 yr
Warranty, compressor7 yr
ENERGY STAR Cold ClimateYes
ENERGY STARYes
RefrigerantR-454B
Electrical115V, 18 A min circuit ampacity, 20 A max breaker
Max rise49.2 ft
Indoor unit width31.57 in

Sources: NEEP ccASHP list · MRCOOL DIY 5th Gen install manual · MRCOOL DIY 5th Gen warranty (rev. 07.03.25) · MRCOOL product data

Before you buy

  • One Amazon listing with this model number is sold as a "Condenser"; confirm the wall unit is in the box before you pay.
  • MRCOOL also called its older R-410A 4th Gen DIY "E Star"; confirm R-454B and a model number of the form DIY-...D25-O.
  • DIYS- is the cheaper DIY Select and EZPRO- is the Easy Pro; a listing that says "5th Gen" and "Select" is the Select.
  • The manual says the line sets install once; reconnecting them, or the pipes at the outdoor unit, voids the warranty.

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