No product photos yet.
Paid link · price checked
MRCOOL's multi-zone brochure prints "DIY-MULTI3-18HP230D-O" as a column head of its MODEL NO. row, and its 5th Gen warranty lists it among the condensers.
Official document: MRCOOL 5th Gen DIY Multi-Zone Series brochure, V.06.24.26 (condensers DIY-MULTI3-18HP230D-O to DIY-MULTI6-55HP230D-O) Checked · Earlier documentOfficial warranty: MRCOOL DIY 5th Generation limited warranty Checked · Earlier documentLocation: Brochure SPECIFICATIONS table, MODEL NO. row; warranty Models list
Documented
Printed as "Cooling Capacity Btu/h 18000 26000" (the brochure's first table (DIY-MULTI3-18HP230D-O and DIY-MULTI4-27HP230D-O); the first figure is DIY-MULTI3-18HP230D-O's).
Official document: MRCOOL 5th Gen DIY Multi-Zone Series brochure, V.06.24.26 (condensers DIY-MULTI3-18HP230D-O to DIY-MULTI6-55HP230D-O) Checked · Earlier documentLocation: Brochure SPECIFICATIONS, CAPACITY & PERFORMANCE, DIY-MULTI3-18HP230D-O
Documented
Printed as "Heating Capacity Btu/h 18000 26000" (the brochure's first table (DIY-MULTI3-18HP230D-O and DIY-MULTI4-27HP230D-O); the first figure is DIY-MULTI3-18HP230D-O's).
Official document: MRCOOL 5th Gen DIY Multi-Zone Series brochure, V.06.24.26 (condensers DIY-MULTI3-18HP230D-O to DIY-MULTI6-55HP230D-O) Checked · Earlier documentLocation: Brochure SPECIFICATIONS, CAPACITY & PERFORMANCE, DIY-MULTI3-18HP230D-O
Documented
Printed as "SEER2 Btu/hr/w 23.9 23.0" (the brochure's first table (DIY-MULTI3-18HP230D-O and DIY-MULTI4-27HP230D-O); the first figure is DIY-MULTI3-18HP230D-O's); the brochure marks its data "*Data provided by AHRI". Manufacturer claim.
Official document: MRCOOL 5th Gen DIY Multi-Zone Series brochure, V.06.24.26 (condensers DIY-MULTI3-18HP230D-O to DIY-MULTI6-55HP230D-O) Checked · Earlier documentLocation: Brochure SPECIFICATIONS, CAPACITY & PERFORMANCE, DIY-MULTI3-18HP230D-O
Documented
Printed as "EER2 Btu/hr/w 13.0 12.0" (the brochure's first table (DIY-MULTI3-18HP230D-O and DIY-MULTI4-27HP230D-O); the first figure is DIY-MULTI3-18HP230D-O's). Manufacturer claim.
Official document: MRCOOL 5th Gen DIY Multi-Zone Series brochure, V.06.24.26 (condensers DIY-MULTI3-18HP230D-O to DIY-MULTI6-55HP230D-O) Checked · Earlier documentLocation: Brochure SPECIFICATIONS, CAPACITY & PERFORMANCE, DIY-MULTI3-18HP230D-O
Documented
HSPF2 for climate region 4, printed as "HSPF2-4 Btu/hr/w 10.0 9.5 HSPF2-5 Btu/hr/w 7.8 7.0" (the brochure's first table (DIY-MULTI3-18HP230D-O and DIY-MULTI4-27HP230D-O); the first figure is DIY-MULTI3-18HP230D-O's); region 5 is 7.8. Manufacturer claim.
Official document: MRCOOL 5th Gen DIY Multi-Zone Series brochure, V.06.24.26 (condensers DIY-MULTI3-18HP230D-O to DIY-MULTI6-55HP230D-O) Checked · Earlier documentLocation: Brochure SPECIFICATIONS, CAPACITY & PERFORMANCE, DIY-MULTI3-18HP230D-O
Documented
Printed as "Refrigerant R-454B oz 61.73 84.66" (the brochure's first table (DIY-MULTI3-18HP230D-O and DIY-MULTI4-27HP230D-O); the first figure is DIY-MULTI3-18HP230D-O's); this condenser's charge is 61.73 oz.
Official document: MRCOOL 5th Gen DIY Multi-Zone Series brochure, V.06.24.26 (condensers DIY-MULTI3-18HP230D-O to DIY-MULTI6-55HP230D-O) Checked · Earlier documentLocation: Brochure SPECIFICATIONS, REFRIGERANT & PIPING, DIY-MULTI3-18HP230D-O
Documented
Printed as "Power Supply V ~ Hz.Ph 208-230V, 60Hz, 1Ph 208-230V, 60Hz, 1Ph" (the brochure's first table (DIY-MULTI3-18HP230D-O and DIY-MULTI4-27HP230D-O); the first figure is DIY-MULTI3-18HP230D-O's): 208-230 V AC, 60 Hz, single phase.
Official document: MRCOOL 5th Gen DIY Multi-Zone Series brochure, V.06.24.26 (condensers DIY-MULTI3-18HP230D-O to DIY-MULTI6-55HP230D-O) Checked · Earlier documentLocation: Brochure SPECIFICATIONS, ELECTRICAL PARTS, DIY-MULTI3-18HP230D-O
Documented
Printed as "Outdoor Noise Level dB(A) 60.0 61.0" (the brochure's first table (DIY-MULTI3-18HP230D-O and DIY-MULTI4-27HP230D-O); the first figure is DIY-MULTI3-18HP230D-O's); MRCOOL prints no measuring distance.
Official document: MRCOOL 5th Gen DIY Multi-Zone Series brochure, V.06.24.26 (condensers DIY-MULTI3-18HP230D-O to DIY-MULTI6-55HP230D-O) Checked · Earlier documentLocation: Brochure SPECIFICATIONS, Outdoor Noise Level, DIY-MULTI3-18HP230D-O
Documented
Printed as "Cooling Capacity Btu/h 18000 26000" (the brochure's first table (DIY-MULTI3-18HP230D-O and DIY-MULTI4-27HP230D-O); the first figure is DIY-MULTI3-18HP230D-O's).
Official document: MRCOOL 5th Gen DIY Multi-Zone Series brochure, V.06.24.26 (condensers DIY-MULTI3-18HP230D-O to DIY-MULTI6-55HP230D-O) Checked · Earlier documentLocation: Brochure SPECIFICATIONS, CAPACITY & PERFORMANCE, DIY-MULTI3-18HP230D-O
Documented
Printed as "Heating Capacity Btu/h 18000 26000" (the brochure's first table (DIY-MULTI3-18HP230D-O and DIY-MULTI4-27HP230D-O); the first figure is DIY-MULTI3-18HP230D-O's).
Official document: MRCOOL 5th Gen DIY Multi-Zone Series brochure, V.06.24.26 (condensers DIY-MULTI3-18HP230D-O to DIY-MULTI6-55HP230D-O) Checked · Earlier documentLocation: Brochure SPECIFICATIONS, CAPACITY & PERFORMANCE, DIY-MULTI3-18HP230D-O
Documented
Printed as "SEER2 Btu/hr/w 23.9 23.0" (the brochure's first table (DIY-MULTI3-18HP230D-O and DIY-MULTI4-27HP230D-O); the first figure is DIY-MULTI3-18HP230D-O's); the brochure marks its data "*Data provided by AHRI". Manufacturer claim.
Official document: MRCOOL 5th Gen DIY Multi-Zone Series brochure, V.06.24.26 (condensers DIY-MULTI3-18HP230D-O to DIY-MULTI6-55HP230D-O) Checked · Earlier documentLocation: Brochure SPECIFICATIONS, CAPACITY & PERFORMANCE, DIY-MULTI3-18HP230D-O
Documented
Printed as "EER2 Btu/hr/w 13.0 12.0" (the brochure's first table (DIY-MULTI3-18HP230D-O and DIY-MULTI4-27HP230D-O); the first figure is DIY-MULTI3-18HP230D-O's). Manufacturer claim.
Official document: MRCOOL 5th Gen DIY Multi-Zone Series brochure, V.06.24.26 (condensers DIY-MULTI3-18HP230D-O to DIY-MULTI6-55HP230D-O) Checked · Earlier documentLocation: Brochure SPECIFICATIONS, CAPACITY & PERFORMANCE, DIY-MULTI3-18HP230D-O
Documented
HSPF2 for climate region 4, printed as "HSPF2-4 Btu/hr/w 10.0 9.5 HSPF2-5 Btu/hr/w 7.8 7.0" (the brochure's first table (DIY-MULTI3-18HP230D-O and DIY-MULTI4-27HP230D-O); the first figure is DIY-MULTI3-18HP230D-O's); region 5 is 7.8. Manufacturer claim.
Official document: MRCOOL 5th Gen DIY Multi-Zone Series brochure, V.06.24.26 (condensers DIY-MULTI3-18HP230D-O to DIY-MULTI6-55HP230D-O) Checked · Earlier documentLocation: Brochure SPECIFICATIONS, CAPACITY & PERFORMANCE, DIY-MULTI3-18HP230D-O
Documented
Printed as "Refrigerant R-454B oz 61.73 84.66" (the brochure's first table (DIY-MULTI3-18HP230D-O and DIY-MULTI4-27HP230D-O); the first figure is DIY-MULTI3-18HP230D-O's); this condenser's charge is 61.73 oz.
Official document: MRCOOL 5th Gen DIY Multi-Zone Series brochure, V.06.24.26 (condensers DIY-MULTI3-18HP230D-O to DIY-MULTI6-55HP230D-O) Checked · Earlier documentLocation: Brochure SPECIFICATIONS, REFRIGERANT & PIPING, DIY-MULTI3-18HP230D-O
Documented
Printed as "Power Supply V ~ Hz.Ph 208-230V, 60Hz, 1Ph 208-230V, 60Hz, 1Ph" (the brochure's first table (DIY-MULTI3-18HP230D-O and DIY-MULTI4-27HP230D-O); the first figure is DIY-MULTI3-18HP230D-O's): 208-230 V AC, 60 Hz, single phase.
Official document: MRCOOL 5th Gen DIY Multi-Zone Series brochure, V.06.24.26 (condensers DIY-MULTI3-18HP230D-O to DIY-MULTI6-55HP230D-O) Checked · Earlier documentLocation: Brochure SPECIFICATIONS, ELECTRICAL PARTS, DIY-MULTI3-18HP230D-O
Documented
Printed as "Outdoor Noise Level dB(A) 60.0 61.0" (the brochure's first table (DIY-MULTI3-18HP230D-O and DIY-MULTI4-27HP230D-O); the first figure is DIY-MULTI3-18HP230D-O's); MRCOOL prints no measuring distance.
Official document: MRCOOL 5th Gen DIY Multi-Zone Series brochure, V.06.24.26 (condensers DIY-MULTI3-18HP230D-O to DIY-MULTI6-55HP230D-O) Checked · Earlier documentLocation: Brochure SPECIFICATIONS, Outdoor Noise Level, DIY-MULTI3-18HP230D-O
Documented
Net dimensions printed as "Net Dimension (WxDxH) inch mm 35.04 x 13.46 x 26.50 890 x 342 x 673 37.24 x 16.14 x 31.89 946 x 410 x 810" (the brochure's first table (DIY-MULTI3-18HP230D-O and DIY-MULTI4-27HP230D-O); the first figure is DIY-MULTI3-18HP230D-O's), width x depth x height in inches then millimeters.
Official document: MRCOOL 5th Gen DIY Multi-Zone Series brochure, V.06.24.26 (condensers DIY-MULTI3-18HP230D-O to DIY-MULTI6-55HP230D-O) Checked · Earlier documentLocation: Brochure SPECIFICATIONS, DIMENSIONS & WEIGHT, Net Dimension (WxDxH), DIY-MULTI3-18HP230D-O
Documented
Net weight; printed as "Net/Gross Weight Outdoor lbs mm 101.63/109.57 46.09/49.70 140.21/151.02 63.59/68.5" (the brochure's first table (DIY-MULTI3-18HP230D-O and DIY-MULTI4-27HP230D-O); the first figure is DIY-MULTI3-18HP230D-O's): 101.63 lb net, 46.09 kg net. The row's unit label reads "lbs mm", but its second pair of figures are kilograms (as the pound figures show).
Official document: MRCOOL 5th Gen DIY Multi-Zone Series brochure, V.06.24.26 (condensers DIY-MULTI3-18HP230D-O to DIY-MULTI6-55HP230D-O) Checked · Earlier documentLocation: Brochure SPECIFICATIONS, DIMENSIONS & WEIGHT, Net/Gross Weight Outdoor, DIY-MULTI3-18HP230D-O
Documented
Maximum number of zones (air handlers), printed as "MAXIMUM # OF ZONES 3 4" (the brochure's first table (DIY-MULTI3-18HP230D-O and DIY-MULTI4-27HP230D-O); the first figure is DIY-MULTI3-18HP230D-O's).
Official document: MRCOOL 5th Gen DIY Multi-Zone Series brochure, V.06.24.26 (condensers DIY-MULTI3-18HP230D-O to DIY-MULTI6-55HP230D-O) Checked · Earlier documentLocation: Brochure SPECIFICATIONS, MAXIMUM # OF ZONES, DIY-MULTI3-18HP230D-O
Documented
Published claims and calculations, not independent test results.
Archived copy captured on 2026-10-30.
Location: 2.1 Packing List; 2.2 Specifications
Retrieved
MRCOOL's installation and owner's manual for the 5th Gen DIY multi-zone system (models DIY-MULTI*-**HP230D-O with DIY wall-mounted and cassette air handlers), captured on October 30, 2026 between 16:30 and 17:45 UTC with the paced research fetcher (HTTP 200). Its section 2.1 packing list and 2.2 specifications (connected units and pipe lengths per condenser size) are cited; it prints no per-model capacity or efficiency ratings, which come from the brochure. Manufacturer statements, not independent tests.
Archived copy of a document published by MRCOOL. Copyright retained by the publisher; kept for reference and verification only, no endorsement implied. To ask for its removal, email legal@chargedreviews.com.
Archived copy, unaltered, kept as a record of what MRCOOL published. Original address: https://doxrepo.mrcool.com/mc-diy-5-mz-im-um-en-01.pdf. Copyright and takedown
Embedded dates are file metadata, not independent proof of publication.
SHA-256: d3e38c80fb0b66e05bcd08490f6ade181b8a86410abd20f67c15ca297fde785e
Archived copy captured on 2026-10-30.
Location: Models list; STANDARD LIMITED WARRANTY COVERAGE
Retrieved
MRCOOL's limited warranty for its 5th Gen DIY air handlers and condensers, captured on October 30, 2026 between 16:30 and 17:45 UTC with the paced research fetcher (HTTP 200); its model list names the five multi-zone condensers. Coverage terms and exclusions are in the document.
Archived copy of a document published by MRCOOL. Copyright retained by the publisher; kept for reference and verification only, no endorsement implied. To ask for its removal, email legal@chargedreviews.com.
Archived copy, unaltered, kept as a record of what MRCOOL published. Original address: https://doxrepo.mrcool.com/mc-diy-5-wr-en-01.pdf. Copyright and takedown
Embedded dates are file metadata, not independent proof of publication.
SHA-256: 098d3f7a9038663cee99e8f6c4cf69b8f1890b91a76c3a162e3bbfeb3ffa5e3d
Archived copy captured on 2026-10-30.
Location: SPECIFICATIONS tables, pages 1 and 2
Retrieved
MRCOOL's own two-page brochure for its 5th Gen DIY multi-zone condensers, listed in mrcool.com's sitemap and captured on October 30, 2026 between 16:30 and 17:45 UTC with the paced research fetcher (HTTP 200). Its specification tables print each condenser's model number, maximum number of zones, cooling and heating capacity, SEER2, EER2, HSPF2, outdoor noise, power supply, dimensions, weight and refrigerant charge, under the note "All specifications are preliminary and are subject to change during mass production" and "*Data provided by AHRI". Its weight row is labeled "lbs mm" though its second figures are kilograms. Manufacturer statements, not independent tests.
Archived copy of a document published by MRCOOL. Copyright retained by the publisher; kept for reference and verification only, no endorsement implied. To ask for its removal, email legal@chargedreviews.com.
Archived copy, unaltered, kept as a record of what MRCOOL published. Original address: https://doxrepo.mrcool.com/mc-mz-diy-5-br-en-01.pdf. Copyright and takedown
Embedded dates are file metadata, not independent proof of publication.
SHA-256: 013d80f5f055bd6b46c736c47f99164cd1a997f67f52e078a44f1257517aad2c
Earlier revisions, archived captures and copies published by someone other than the manufacturer. Every one stays reachable.
Archived copy of a document published by MRCOOL. Copyright retained by the publisher; kept for reference and verification only, no endorsement implied. To ask for its removal, email legal@chargedreviews.com.
Archived copy, unaltered, kept as a record of what MRCOOL published. Original address: https://doxrepo.mrcool.com/mc-mz-diy-5-br-en-01.pdf. Copyright and takedown
Embedded dates are file metadata, not independent proof of publication.
SHA-256: 013d80f5f055bd6b46c736c47f99164cd1a997f67f52e078a44f1257517aad2c
Archived copy of a document published by MRCOOL. Copyright retained by the publisher; kept for reference and verification only, no endorsement implied. To ask for its removal, email legal@chargedreviews.com.
Archived copy, unaltered, kept as a record of what MRCOOL published. Original address: https://doxrepo.mrcool.com/mc-diy-5-mz-im-um-en-01.pdf. Copyright and takedown
Embedded dates are file metadata, not independent proof of publication.
SHA-256: d3e38c80fb0b66e05bcd08490f6ade181b8a86410abd20f67c15ca297fde785e
Archived copy of a document published by MRCOOL. Copyright retained by the publisher; kept for reference and verification only, no endorsement implied. To ask for its removal, email legal@chargedreviews.com.
Archived copy, unaltered, kept as a record of what MRCOOL published. Original address: https://doxrepo.mrcool.com/mc-diy-5-wr-en-01.pdf. Copyright and takedown
Embedded dates are file metadata, not independent proof of publication.
SHA-256: 098d3f7a9038663cee99e8f6c4cf69b8f1890b91a76c3a162e3bbfeb3ffa5e3d
Printed as "The unit comes standard with a 5 year parts and 7 year compressor warranty."; the five years are the parts term and the compressor term is seven years. Conditions and exclusions are in MRCOOL's warranty document.
Official warranty: MRCOOL DIY 5th Generation limited warranty Checked · Earlier documentLocation: Warranty, STANDARD LIMITED WARRANTY COVERAGE
Documented
Affiliate links below. Affiliate disclosure
Price for one unit, as listed by the seller. Does not include tax and shipping. Price checked .
The seller lists this as a new unit. Condition checked .
Distributor store listing: ShopSolar product listing Paid link.CheckedPrices we read at ShopSolar · 8 readings · no change in our readings since
Since · Listing price (USD)
A break in a line is a gap in our readings: no price is drawn for days we did not read.
| Checked (UTC) | Seller | Price |
|---|---|---|
| Oct 30, 2026, 6:12 AM PDT | ShopSolar Paid link. | $1,555 |
| Nov 3, 2026, 1:06 AM PST | ShopSolar Paid link. | $1,555 |
| Nov 4, 2026, 3:31 AM PST | ShopSolar Paid link. | $1,555 |
| Nov 5, 2026, 1:06 AM PST | ShopSolar Paid link. | $1,555 |
| Nov 6, 2026, 1:07 AM PST | ShopSolar Paid link. | $1,555 |
| Nov 7, 2026, 1:17 AM PST | ShopSolar Paid link. | $1,555 |
| Nov 9, 2026, 3:32 AM PST | ShopSolar Paid link. | $1,555 |
| Nov 12, 2026, 1:26 AM PST | ShopSolar Paid link. | $1,555 |
Recent reviews count from the latest approved revision. Verified reviews carry 19× the weight. Select a period to filter.
Showing 1 of 1 reviews
I bought 2 condenser units (5th Gen 2 zone, 5th Gen 3 zone) and 5 heads (12k, 6k, 6k, 6k, 6k) for a house built in 1889. HVAC company quoted me $26k for a heat pump connected to the pre-existing central ducting, so I found Mr Cool. I did the entire install myself. The scariest part of the installation was joining the precharged lineset ends to the condensers and the head units, because there are all of these intimidating torque specs for the fittings. However, the lineset fittings are solid brass (like high quality plumbing fitting, which most people rarely see), with high quality pressure release mechanisms internal to the fittings. So basically, you just tighten them until they are joined flush, and they work like a charm. I started the first connection using a torque wrench and was stressed out. By the final connection I was using 2 pairs of pliers- haha. With these fittings, "it's not that deep", as the kids say. These high quality fittings cost Mr Cool far more than cheap flare connections, or cheaper screw connections, but the fittings made all the difference in making sure that the riskiest part of the install went smoothly. I appreciate that. The units cool like crazy, and we had a VERY hot summer this year. The condensers are super quiet- nothing like what most Americans are used to with the junk condensers most of us have sitting outside our houses making lots of noise. For multi-zone, pay close attention to the wiring diagram to ensure the correct head is getting the correct comms with the condenser (again, not that complex, but does require attention). If there are any points I would critique it would be: 1. the thermostats on the head units can be a little weird, but that's likely due to airflow and stratification the rooms- so use the "follow me" function, which makes the system use the thermostats in the remote controls instead (how cool is that?). 2. Not Mr Cool's fault, but house guests need to be trained on these things. If a guest has lived outside the US, I don't need to train them (since everywhere in the world uses mini splits except the US), but most people need a little class on how the system works.
This category has no Evidence score.
No certificates on file. Certificate guide
No sourced accessories or replacement parts listed yet.
Manufacturer SKU DIY-MULTI3-18HP230D-O
No historical observations recorded yet.
No discussions linked yet. Search DIY Solar Forum
No recalls or legal notices on file; this is not a complete recall or court search. All notices · Report a notice
5.0 (1)Something wrong that is not one of the values above?
Prices · price basis. * Calculated; estimates labeled. Value needs confirmation; select it for the reason.
