Cleaning Heat Pump Outside Unit?

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tweake

2647 posts

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#3258478 11-Jul-2024 15:15

evilengineer:

Given the somewhat novel configuration of the house, the master bedroom (roughly 12-15m2) is directly adjacent to the main living area and if we end up getting a new heat pump I'll be tempted to consider a small multi-room set up with two wall units running off the same outdoor box.

i'm not a fan of multi's unless you have lack of room. the worse situation is having a big difference in head sizes. eg having 6kw lounge and 2kw bedroom is poor imho.

RunningMan

9189 posts

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#3258502 11-Jul-2024 16:09

This is the correct cleaner to use

https://www.bunnings.co.nz/supercell-750ml-heat-pump-air-conditioner-diy-cleaner_p8911747

tweake

2647 posts

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+1 received by user: 1139

#3258521 11-Jul-2024 17:59

RunningMan:

This is the correct cleaner to use

https://www.bunnings.co.nz/supercell-750ml-heat-pump-air-conditioner-diy-cleaner_p8911747

its a cleaner you can use. good for indoors unit and the filters.

Yoban

453 posts

Ultimate Geek
+1 received by user: 86

#3258590 12-Jul-2024 08:41

RunningMan:

This is the correct cleaner to use

https://www.bunnings.co.nz/supercell-750ml-heat-pump-air-conditioner-diy-cleaner_p8911747

Also have used this cleaner for inside units only though - very pleased with it. Have tried this one Simple Green 750ml Air Con Cleaner - Bunnings New Zealand too, but do need to try it again as it was only once and I believe it is a bit more of a "slow working over time" product

evilengineer

466 posts

Ultimate Geek
+1 received by user: 367

#3259578 15-Jul-2024 09:38

Hi Guys,

I gave everything a good clean over the weekend. That includes the filters inside and the condenser fins on the outside unit.

The overall performance of the heat pump is much improved as a result.

It was very straight forward to unscrew the lid on the outside unit (remember to flick the isolator switch into the off position first, though.) and give all the fins a good going over with the hose pipe from both sides.

Not sure the spray on Air Con cleaner makes much of a difference. Probably okay to clean out any collected gunk with the hose.

It may be possible to get away with just cleaning from the outside without removing the lid but the main issue I found was that the base of the unit had a folded lip and no drain hole so after the clean there was a about 1cm of water sitting in the bottom that required removing.

tweake

2647 posts

Uber Geek
+1 received by user: 1139

#3259587 15-Jul-2024 10:25

there should be drain hole somewhere. its probably plugged up. in heating mode they have condensation on the coil which will drain to the bottom, not to mention rain getting in.

it sounds like the problem was dirt build up combined with running on design day, ie coldest weather its designed for, plus trying to heat a house up instead of maintaining temps.

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