How often should I clean the Cooper & Hunter MIA Series filter?

Cooper & Hunter Multi R Installation Manual does not publish a calendar interval for this line in the sourced maintenance section. It identifies dirty filter maintenance as a condition to address, so treat visible dirt, weak airflow, or reduced cooling/heating as the manual-backed trigger. The source note is: Air purifying filter & Air filter(behind).

Is the Cooper & Hunter MIA Series filter washable or disposable?

The sourced rows are treated as washable air-filter entries unless the capacity table shows a specific OEM disposable-filter part number for that model.

Replacement parts and filters

Cooper Hunter MIA Replacement Parts & Filters

Covers 7 MIA Series 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
9k BTU	Cooper & Hunter MIA 6,000 BTU R-454B 115V (CH-RLS06MIA-115VI / CH-RLS06MIA-115VO)	CH-RLS06MIA-115VI / CH-RLS06MIA-115VO	filter washable: Indoor washable air filter line set installation kit: Connecting pipe assembly size - 1/4 x 3/8 remote control: Wireless remote control
9k BTU	Cooper & Hunter MIA 9,000 BTU R-454B 115V (CH-RLS09MIA-115VI / CH-RLS09MIA-115VO)	CH-RLS09MIA-115VI / CH-RLS09MIA-115VO	filter washable: Indoor washable air filter line set installation kit: Connecting pipe assembly size - 1/4 x 3/8 remote control: Wireless remote control
9k BTU	Cooper & Hunter MIA 9,000 BTU R-454B 208/230V (CH-RLS09MIA-230VI / CH-RLS09MIA-230VO)	CH-RLS09MIA-230VI / CH-RLS09MIA-230VO	filter washable: Indoor washable air filter line set installation kit: Connecting pipe assembly size - 1/4 x 3/8 remote control: Wireless remote control
12k BTU	Cooper & Hunter MIA 12,000 BTU (115V)	CH-RLS12MIA-115VI / CH-RLS12MIA-115VO	filter washable: Indoor washable air filter line set installation kit: Connecting pipe assembly size - 1/4 x 3/8 remote control: Wireless remote control
12k BTU	Cooper & Hunter MIA 12,000 BTU R-454B 208/230V (CH-RLS12MIA-230VI / CH-RLS12MIA-230VO)	CH-RLS12MIA-230VI / CH-RLS12MIA-230VO	filter washable: Indoor washable air filter line set installation kit: Connecting pipe assembly size - 1/4 x 3/8 remote control: Wireless remote control
18k BTU	Cooper & Hunter MIA 18,000 BTU R-454B 208/230V (CH-RLS18MIA-230VI / CH-RLS18MIA-230VO)	CH-RLS18MIA-230VI / CH-RLS18MIA-230VO	filter washable: Indoor washable air filter line set installation kit: Connecting pipe assembly size - 1/4 x 1/2 remote control: Wireless remote control
24k BTU	Cooper & Hunter MIA 24,000 BTU R-454B 208/230V (CH-RLS24MIA-230VI / CH-RLS24MIA-230VO)	CH-RLS24MIA-230VI / CH-RLS24MIA-230VO	filter washable: Indoor washable air filter line set installation kit: Connecting pipe assembly size - 3/8 x 5/8 remote control: Wireless remote control

Parts & filters

filter-washable

Indoor washable air filter

Fits: Cooper & Hunter MIA Series systems
Fit note: Applies to all 7 covered systems in this line; confirm the exact indoor/outdoor SKU in the capacity table before ordering.
Source: Cooper & Hunter Multi R Installation Manual, Indoor unit overview, page p. 19 (Air purifying filter & Air filter(behind))

line-set-installation-kit

Connecting pipe assembly size - 1/4 x 1/2

Fits: Cooper & Hunter MIA Series systems
Fit note: Applies to 1 of 7 covered systems in this line; confirm the exact indoor/outdoor SKU in the capacity table before ordering.
Source: Cooper & Hunter Multi R Installation Manual, Installation accessories, page p. 22 (18K Connecting pipe assembly Liquid Side Φ1/4in(Φ6.35) Gas Side Φ1/2in(Φ12.7))

line-set-installation-kit

Connecting pipe assembly size - 1/4 x 3/8

Fits: Cooper & Hunter MIA Series systems
Fit note: Applies to 5 of 7 covered systems in this line; confirm the exact indoor/outdoor SKU in the capacity table before ordering.
Source: Cooper & Hunter Multi R Installation Manual, Installation accessories, page p. 22 (6K/9K/12K Connecting pipe assembly Liquid Side Φ1/4in(Φ6.35) Gas Side Φ3/8in(Φ9.52))

line-set-installation-kit

Connecting pipe assembly size - 3/8 x 5/8

Fits: Cooper & Hunter MIA Series systems
Fit note: Applies to 1 of 7 covered systems in this line; confirm the exact indoor/outdoor SKU in the capacity table before ordering.
Source: Cooper & Hunter Multi R Installation Manual, Installation accessories, page p. 22 (24K/30K/33K/36K Connecting pipe assembly Liquid Side Φ3/8in(Φ9.52) Gas Side Φ5/8in(Φ16))

remote-control

Wireless remote control

Fits: Cooper & Hunter MIA Series systems
Fit note: Applies to all 7 covered systems in this line; confirm the exact indoor/outdoor SKU in the capacity table before ordering.
Source: Cooper & Hunter Multi R Installation Manual, Optional accessories, page p. 22 (There are two types of remote controls: wired and wireless.)

Frequently asked questions

How often should I clean the Cooper & Hunter MIA Series filter?: Cooper & Hunter Multi R Installation Manual does not publish a calendar interval for this line in the sourced maintenance section. It identifies dirty filter maintenance as a condition to address, so treat visible dirt, weak airflow, or reduced cooling/heating as the manual-backed trigger. The source note is: Air purifying filter & Air filter(behind).
Is the Cooper & Hunter MIA Series filter washable or disposable?: The sourced rows are treated as washable air-filter entries unless the capacity table shows a specific OEM disposable-filter part number for that model.