Heat Pumps - They Need Servicing, Right?

This week I strip down and service one of my two Daikin 4MXM series air to air multi split heat pumps. After 18 months of of giving solid service as a replacement for my oil fired central heating system, they need a good clean and thorough inspection. A lot of people can overlook the need to regularly maintain heat pumps to ensure their on-going safety, efficiency and reliability.
Any commercial enquiries, queries or questions can be sent directly to me at [e-mail].

[@ducharmehvactraining925]

nice video but I would never put a set of gauges on an Inverter Heat Pump. You loose refrigerant and because it is critically charged it affects the system greatly. Access sensors from Fieldpiece or Yellow Jacket are available that will hook up Bluetooth to your phone and if needed you can hook up a short 3-foot hose to them if you need to adjust charge. Also, the indoor units need to be properly power washed and then rinsed properly including the drain pan. The blower wheel needs to be removed and cleaned as well. There are kits to do this work to protect the walls and floors. I know these units are only 18 months old but when they get 2 or 3 years old, they will need a more in-depth cleaning as I have described.

[@changeeternal7868]

Very nice video. Thank you for sharing your knowledge in the manner that you do (clear; concise; and with a touch of humor). Keep up the good work! Best, Maurice

[@mike-M0MSN]

Loved it, very informative. Good job

[@effervescence5664]

I have a similar tool at the end but it's actually a mini pipe bender. I think it was less than 10 quid from Lidl and it's been brilliant for the few times it has been needed. Nice to see a proper service being carried out, servicing isn't highlighted on appliances enough with only half a dozen or so of the main lads on YT now showing it.

[@themartin1c]

Good video. I searched a while ago about servicing (my indoor unit was starting to smell) and couldn't find much that was clear and concise. I eventually paid a guy to come out and service. All he did was spray some cleaner on the indoor unit. I don't think he even got within 6 feet of the outdoor unit 😳let alone check for leaks

[@tommoore6998]

Well done video. Thanks!

[@craigst1300]

Daikin HVAC systems have been sold here in Australia since the late 1960’s and today would not only be one of the best quality units you can buy, but a market leader here in Australia.

[@paitor]

Nice video. Thanks!

[@rollsie]

Connecting gauge lines to a system during a service is terrible practice. You’re venting a small amount of refrigerant to the atmosphere every single time. You should only connect gauge lines if you believe there’s an issue and only need to take suction/discharge/liquid temps to decide if a system is working correctly.

[@glightsolutions]

I’d agree. Never hook up gauges during a service unless you think there is a serious issue with your fridge circuit, if you do have to them core depressors and wireless gauges are best.

[@wiganmeatpie2011]

100% agree

[@richardlphillips]

Interesting stuff, thanks! Didn’t seem like a stocking filler.

[@machiato7667]

Excellent video! I have the same Daikin 4MXM68 so very useful info 👍🏻. One thing shocked me was your energy consumption. 750 kWh over 17 months. Mine will likely double that or more. Use it sparsely and still. Using it for 4 months now.

[@ackiid]

more heat losses = more power consumption, easy

[@markrainford1219]

Does seem ridiculously low. Looking at that house it has solid walls too. Even with cooking and water on top, still peanuts.

[@serraios1989]

Brilliant job you did. But let’s be honest here; the majority of the heat pumps will not receive this kind of service. Like the majority of the gas boilers don’t have their burners opened up, their heat exchangers cleaned and the debris removed from their condensate traps, when being serviced.

[@dameonhill]

I think you're absolutely right sadly. I go to many breakdowns on appliances which have been "serviced regularly" but clearly haven't been shown the pointy end of a vacuum cleaner for years. Some engineers are either too overworked or have to price the job so low as to be competitive that they just can't afford to take the time.

[@Umski]

@@dameonhill engineer is sometimes too strong a word to use on some trades-folk I've come across - what you did was quite satisfying to watch yet 90% DIY-able but no doubt that would cause some folks to get their backs up and especially with respect to warranty! Most consumers won't stomach spending £xxx on a yearly service especially if they got away with £xx or nothing for their gas boiler...in a way this to me highlights one of the negatives about an A2A HP vs A2W (more coils to clean hence more £££ for servicing!) but then again it's no different to folks that drive around on flat tyres or with no oil and then seem surprised when they breakdown 🙄

[@markrainford1219]

I'd say 100% DIYable. Let's face it, if there was a gas leak, it just wouldn't work. Same as your car aircon. Looking at his units at seventeen months old, I'd say service interval of three years too.@@Umski

[@MrButuz]

Hahaha 0:34 I ducked - the damn bee sounded so real on my headphones lol

[@drood78]

it say's manual pipe bender on that box.

[@lookoutleo]

The Air to air heatpump I've been given is a 6kw and burns about 2kwh . Do you think it's worth installing or should I buy a new one. What's the liquid coil cleaner , is it a detergent ?

[@FarObserver]

Hi Daemon, I have the same units (Daikin Stylish) which were installed in April this year. I've cleaned the filters, but got a persistent unpleasant smell when one of the unit operates in fan mode. I'm not sure I should be disassembling it myself, but is there anything I can spray in to kill off any mould/bacteria etc?

[@ManuVerhelst]

What kind of wet vaccum cleaner do you use?

[@johnboy1232]

Cost of an annual service for the service work to this system if you are a customer?

[@gavindyke2363]

I left a comment regarding the SY cable which I think you're using for power. SY cable is not UV resistant and shouldn't be used for power. It's a control cable. Just giving you a heads up. 👍

[@Shithappenswhenu]

Why did you go air to air? instead of say an air to water heat pump I thought would be the more direct replacement for oil fired central heating you could of use all the radiators still in place...

[@courtmanr]

14:15 Can you explain why you x2? Thanks

[@dameonhill]

Yes, the “multiply by 2” comment refers to the fact that I have two of these units, therefore my energy usage would be 750kWh x 2.

[@AlanCarruthers-py3ny]

The outdoor unit is wired in SY cable, bad practice as it is neither waterproof or UV resistant

[@meehall3960]

People don’t factor in the huge cost of servicing these things. A gas boiler is 120 per year. Two A2A heat pumps could be 500.

[@ackiid]

Heat pump manufacturers first have to get their shit straight

[@ackiid]

@@zlmdragon. issue is that COP is not only dependant on outside temperature, but also humidity and defrost cycle of the heatpump. With high humidity and say around 0 degrees temperature COP might be lower than at -5C and low humidity. The built-in power consumption meter tends to be incorrect, and for example so called Smart cloud expansion (panasonic) in my place costs 180 eur delivered without installation, and basically is shit, does not even have a proper app, it is browser-based. I mean heatpumps are very simple machines, however manufacturers still manage to screw it up

[@ackiid]

@@zlmdragon. I am an engineer, I understand quite well how it works, and am capable to spot obvious drawbacks, that could be fixed quite easily. Millions are also doing random weird shit, it does not mean that it is good and everybody should do it, right?

[@markrainford1219]

How would it get round the bend?

[@mgs771]

When we buy the dam thing should have a course on how to service ourselves. Not worth the cost

[@Shithappenswhenu]

looks more like he bought them tools on wish

[@Arturas1244]

Just watched most idi otic pointless waste of time , trying to prove what they are doing something. 20 minutes doing nothing, yes nothing all that cleaning is pointless, using chemicals pointless, the most important refilling he skipped as its one button done. this is how you do : take blower open hold cooler what it would not spin from air as it can create energy and blow inside 5 seconds done, close it up, never open any electrical panel, as you open the seals must be replaced, you open if it malfunction. the seal stops water and moisture in. He did open cause after he open s seals will be bad and later machine will corode near wires than you will pay him more money for damage he done. You use chemicals if its molded badly, which happens. Couple leafs do nothing. Putting liquid inside is also bad it will lower life of machine as it will corode. There is reason why machine is hidden from rain. So skip to 20 min, this is what you need only to refill use simple cheap refiller, automatic does same as with gages. Now do not use some electric counter like he did as it also uses energy lol, usually machine will have in software menu how much energy it used. Actually he lied, machine will use energy more than its colder or hotter. More cold more energy it will need. And on some temp it will shut off after you must use simple electrical heating lol. Some of these machines turns off at minus15 some at minus 30 depends which model.

[@dontgooutdoorproductions2574]

simple cheap refiller? automatic does the same as with gauges? sounds like someone is scamming you! multisplits/mini splits dont need refilling even after 20+ years. If they do you have a factory defect/damaged system or cowboy installer! If you ever worked in the industry and saw the average quality of installers you would know that this guy clearly cares and has a very good standard of work.

[@joeyysossa4144]

You didnt wash the turbine...that collects dust it turns to gunk as it spins...bad job!!!