How often should I clean the MRCOOL DIY 5th Gen Hyper Heat filter?

Manufacturer care guidance for this line: Washable air filter: Washable. Clean and reuse. MRCOOL does not publish a calendar cleaning interval for the primary filter. Replace if damaged or no longer cleanable.

Is the MRCOOL DIY 5th Gen Hyper Heat filter washable or disposable?

Washable air filter is reusable. Washable air filter: Washable. Clean and reuse. MRCOOL does not publish a calendar cleaning interval for the primary filter. Replace if damaged or no longer cleanable.

Replacement parts and filters

MRCOOL DIY 5th Gen Hyper Heat HZ Replacement Parts & Filters

Covers 2 DIY 5th Gen Hyper Heat systems. Part numbers and fit notes identify compatibility only; no manufacturer endorsement is implied.

View Fitment

Capacity and SKU fitment

Use the exact indoor and outdoor model pair before ordering; shared parts and capacity-specific parts are separated by row.

Capacity	Model	SKU pair	Documented part numbers
12k BTU	MRCOOL DIY Hyper Heat 5th Gen 12,000 BTU (230V)	DIY-12-HP-WMAH-230D25-O / DIYHH-12-HP-C-230D25-O	air cleaning accessory: MMCK01 display board: Display board (service part) filter washable: Washable air filter indoor pcb: Indoor control board / PCB (service part) louver motor: Louver stepping motor (service part) quick connect line set: DIY25-1438-O remote control: Remote control smart thermostat: MST05
18k BTU	MRCOOL DIY Hyper Heat 5th Gen 18,000 BTU (230V)	DIY-18-HP-WMAH-230D25-O / DIYHH-18-HP-C-230D25-O	air cleaning accessory: MMCK01 display board: Display board (service part) filter washable: Washable air filter indoor pcb: Indoor control board / PCB (service part) louver motor: Louver stepping motor (service part) quick connect line set: DIY25-1412-O remote control: Remote control smart thermostat: MST05

Parts & filters

air-cleaning-accessory

MRCOOL Cool Care kit (MMCK01)

Fits: MRCOOL DIY 5th Gen Hyper Heat systems
OEM part number: MMCK01
Fit note: Applies to all 2 covered systems in this line; confirm the exact indoor/outdoor SKU in the capacity table before ordering.
Source: MMCK01 COOL Care Program Kit, Compatibility, page article (Each shipment includes ... a fresh air filter. Compatibility: MRCOOL DIY Mini Split System.)

display-board

Display board (service part)

Fits: MRCOOL DIY 5th Gen Hyper Heat systems
Fit note: Applies to all 2 covered systems in this line; confirm the exact indoor/outdoor SKU in the capacity table before ordering.
Source: MRCOOL DIY 5th Gen Service Manual, 4.2 Error Display (Indoor Unit), page p. 36 (If the unit responds, the display board requires replacement.)

filter-washable

Washable air filter

Fits: MRCOOL DIY 5th Gen Hyper Heat systems
Filter care: Washable. Clean and reuse. MRCOOL does not publish a calendar cleaning interval for the primary filter. Replace if damaged or no longer cleanable.
Fit note: Applies to all 2 covered systems in this line; confirm the exact indoor/outdoor SKU in the capacity table before ordering.
Source: MRCOOL DIY 5th Gen Service Manual, 4.5 Error Diagnosis Without Error Code - Remote Maintenance, page p. 46 (Dirty air filter ... Clean or replace)

indoor-pcb

Indoor control board / PCB (service part)

Fits: MRCOOL DIY 5th Gen Hyper Heat systems
Fit note: Applies to all 2 covered systems in this line; confirm the exact indoor/outdoor SKU in the capacity table before ordering.
Source: MRCOOL DIY 5th Gen Service Manual, 4.2 Error Display (Indoor Unit), page p. 36 (If the unit does not respond to the remote, the indoor PCB requires replacement.)

louver-motor

Louver stepping motor (service part)

Fits: MRCOOL DIY 5th Gen Hyper Heat systems
Fit note: Applies to all 2 covered systems in this line; confirm the exact indoor/outdoor SKU in the capacity table before ordering.
Source: MRCOOL DIY 5th Gen Service Manual, 4.5 Field Maintenance, page p. 50 (Replace the stepping motor)

quick-connect-line-set

25 ft Quick Connect precharged line set - 1/4 x 1/2

Fits: MRCOOL DIY 5th Gen Hyper Heat systems
OEM part number: DIY25-1412-O
Fit note: Applies to 1 of 2 covered systems in this line; confirm the exact indoor/outdoor SKU in the capacity table before ordering.
Source: MRCOOL 5th Gen R-454B DIY Line Set 1/4 - 1/2, DIY 5th Gen 9k, 12k & 18k, page article (DIY25-1412-O)

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quick-connect-line-set

25 ft Quick Connect precharged line set - 1/4 x 3/8

Fits: MRCOOL DIY 5th Gen Hyper Heat systems
OEM part number: DIY25-1438-O
Fit note: Applies to 1 of 2 covered systems in this line; confirm the exact indoor/outdoor SKU in the capacity table before ordering.
Source: MRCOOL 5th Gen R-454B DIY Line Set 1/4 - 3/8, DIY 5th Gen 6k, 9k & 12k, page article (DIY25-1438-O)

Some retailer links may earn us a commission at no extra cost; paid relationships never change scores or recommendations. Affiliate disclosure

Paid link

Check price at HVACDirect

remote-control

Remote control

Fits: MRCOOL DIY 5th Gen Hyper Heat systems
Fit note: Applies to all 2 covered systems in this line; confirm the exact indoor/outdoor SKU in the capacity table before ordering.
Source: MRCOOL DIY 5th Gen Service Manual, 4.5 Remote Maintenance, page p. 46 (Replace the remote control)

smart-thermostat

MRCOOL Smart Wi-Fi Mini Stat

Fits: MRCOOL DIY 5th Gen Hyper Heat systems
OEM part number: MST05
Fit note: Applies to all 2 covered systems in this line; confirm the exact indoor/outdoor SKU in the capacity table before ordering.
Source: MRCOOL Mini-Stats, MRCOOL Mini Stats, page article (MST05)

Frequently asked questions

How often should I clean the MRCOOL DIY 5th Gen Hyper Heat filter?: Manufacturer care guidance for this line: Washable air filter: Washable. Clean and reuse. MRCOOL does not publish a calendar cleaning interval for the primary filter. Replace if damaged or no longer cleanable.
Is the MRCOOL DIY 5th Gen Hyper Heat filter washable or disposable?: Washable air filter is reusable. Washable air filter: Washable. Clean and reuse. MRCOOL does not publish a calendar cleaning interval for the primary filter. Replace if damaged or no longer cleanable.