Is the MRCOOL DIY Select 18K worth it?

For a single room up to 800 sq ft where you can run a 230V circuit, yes. The pre-charged lineset removes the vacuum-pump step that makes most mini splits pro-only.

Can I install it myself?

MRCOOL markets it as DIY: the lineset comes pre-charged and connects with quick-connect fittings. You still need a dedicated 208/230V circuit, which usually means an electrician.

How does it compare with the MRCOOL DIY 4th Gen?

This Select model uses R-454B and is rated SEER2 17.3. The 4th Gen line uses R-410A and offers more capacity and multi-zone options; Select is the simpler single-zone choice.

What size room will it cool?

Up to about 800 sq ft, with 17,000 BTU cooling and 18,000 BTU heating. Rooms with heavy sun or poor insulation may need the next size up.

Does it work in cold weather?

Yes. It is rated to operate down to -13°F in heating and cooling, so it suits garages and cold-climate rooms better than many budget mini splits.

The wall air handler, outdoor condenser, 11.5 ft pre-charged lineset, wireless remote and washable filter. Mounting hardware and line-set covers are typically separate.

MRCOOL DIY Select 18K BTU Ductless Mini Split System with White Wall Mount Air Handler, 230V, 11.5 Ft DIY Lineset, R454B

Last price we saw

$1,690.00at Home Depot, last seen Nov 2

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Our take on the MRCOOL DIY Select 18K BTU Ductless Mini Split System with White Wall Mount Air Handler, 230V, 11.5 Ft DIY Lineset, R454B

The MRCOOL DIY Select 18K is a single-zone ductless mini split that heats and cools up to 800 sq ft, with a 17,000 BTU cooling and 18,000 BTU heating capacity. It ships with an 11.5 ft pre-charged DIY lineset, so a handy homeowner can install it without a vacuum pump or brazing. It runs on 208/230V and uses R-454B refrigerant, which has a lower global warming potential than R-410A. It is Energy Star rated at SEER2 17.3 and HSPF2 8.5, and it keeps working down to -13°F in both heating and cooling.

Best forDIY homeowners replacing a window or portable AC

MRCOOL DIY Select 18K BTU Ductless Mini Split System with White Wall Mount Air Handler, 230V, 11.5 Ft DIY Lineset, R454B

Last price we saw

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Our take on the MRCOOL DIY Select 18K BTU Ductless Mini Split System with White Wall Mount Air Handler, 230V, 11.5 Ft DIY Lineset, R454B

MRCOOL DIY Select 18K BTU Ductless Mini Split System with White Wall Mount Air Handler, 230V, 11.5 Ft DIY Lineset, R454B

Last price we saw

Ask our shopping agent

Our take on the MRCOOL DIY Select 18K BTU Ductless Mini Split System with White Wall Mount Air Handler, 230V, 11.5 Ft DIY Lineset, R454B