Joining the Renewable Heating Hub forums is completely free and only takes a minute. By registering you’ll be able to ask questions, join discussions, follow topics you’re interested in, bookmark useful threads and receive notifications when someone replies. Non-registered members also do not have access to our AI features. When choosing your username, please note that it cannot be changed later, so we recommend avoiding brand or product names. Before registering, please take a moment to read the Forum Rules & Terms of Use so we can keep the community helpful, respectful and informative for everyone. Thanks for joining!
Treating your heat pump against rust
Graham Hendra posted an interesting piece today about treating your heat pump annually with ACF50 to prevent it from rusting: https://renewableheatinghub.co.uk/showing-your-heat-pump-some-love-with-acf50
It's actually an interesting point. Our ASHP is now 3 years old with no signs of rust, but I guess the casing is going to start degrading in time – how are all your heat pumps ageing?
Never heard go ACF50 ( https://amzn.to/3q2m93E) prior to this post either. Looks like interesting stuff. Any one else used ACF50?
🔥 Britain’s Heat Pump Shitshow
How Installing a Heating System Became a National Nervous Breakdown
Free UK shipping.
📗 Heat Pumps Explained
A Jargon-Free Guide for Homeowners
Rewritten and updated for 2027
📘 From Zero to Heat Pump Hero
🛠️ Bodge Buster
New to heat pumps?
Take the Heat Pump Fundamentals course and use INTRO50 at checkout for 50% off.
Posted by: @editorGraham Hendra posted an interesting piece today about treating your heat pump annually with ACF50 to prevent it from rusting.
It's actually an interesting point. Our ASHP is now 3 years old with no signs of rust, but I guess the casing is going to start degrading in time – how are all your heat pumps ageing?
Never heard go ACF50 prior to this post either. Looks like interesting stuff. Any one else used ACF50?
Yup, it's very common and well thought of in motorcycle circles. When I rode/commuted year-round I used it to good effect on the bikes. Good idea.
@kev-m, thanks. I’ve never heard of it. Will get a can and give it a go.
🔥 Britain’s Heat Pump Shitshow
How Installing a Heating System Became a National Nervous Breakdown
Free UK shipping.
📗 Heat Pumps Explained
A Jargon-Free Guide for Homeowners
Rewritten and updated for 2027
📘 From Zero to Heat Pump Hero
🛠️ Bodge Buster
New to heat pumps?
Take the Heat Pump Fundamentals course and use INTRO50 at checkout for 50% off.
A quick heads up from a motorcyclist of 30 years - and an 30 yr Industrial Chemist.
ACF50 is amazing stuff and I've used nothing else for decades. However - I AVOID direct onto electrical parts on motorcycles, e.g., connectors. Seen a few issues from this over the years, (mostly older connectors mind). Oh and if using on bikes, motorbikes DO NOT SPRAY ONTO BRAKE DISCS. You'll get a nasty suprise if you do (You wont stop - at all!).
Putting the chemist hat on for a mo - The safety sheets for this stuff don't do it justice IMHO.(see below).
They just talk about eye safety mostly. I use gloves, glasses, washable overall and apply in well ventilated area and don't breathe the smoke when it burns off exhaust.
The stuff is full of various length hydrocarbons in an Ingredient called "Hydrotreated Oils CAS 72623-85-9" Its a real mix of hydrocarbon chains and a Cat1 Carcinogen. The Clue is in the Carc. 1B H350 in table 3.2 And in section 16.
H372: causes damage to organs through prolonged or repeated exposure
H350: may cause cancer
Net, contact / breathing should be avoided for obvious reasons - so dont use it like hairspray.
I personally AVOID the aerosol - and buy the paint on version instead - more application precision (cheaper too in long run).
Does it work?..... - you betcha - beyond anythign else you can buy - its expensive but worth it.
But PLEASE be careful in application and avoiding contact.
Kipper
Edited for typos
- 27 Forums
- 2,811 Topics
- 66.5 K Posts
- 2,569 Online
- 7,222 Members
Join Us!
Installer Finder
Degrees of Separation
Latest Posts
-
RE: Renewables & Heat Pumps in the News
The official statistics state 16,633 vouchers paid Apri...
By Temperature_Gradient , 29 minutes ago
-
I think that CCGT plant in Lingen is more likely to suc...
By Transparent , 2 hours ago
-
RE: Heat Geek installations: share your experiences
@l8again fwiw my experience (Valiant but not with heat ...
By JamesPa , 5 hours ago
-
RE: DIY powerflushing tutorial
The problem is that while inhibitors inhibit metal corr...
By Pirate Rich , 18 hours ago
-
RE: How Can I Prove Coal Was My Main Heating Source Without Receipts?
@etchedpixels thank you for the advice paid cash all...
By Chilli304 , 1 day ago
-
RE: Why don't people choose heat pumps?
Savings you need to consider versus the investment valu...
By EtchedPixels , 2 days ago
-
RE: The Changing Jet Stream Could Challenge UK Air Source Heat Pumps
@susannasaunders An interesting conversation to have ...
By Rob of York , 2 days ago
-
RE: How much of your renewable and home setup would still work if the internet went down?
Yes, in my case, the ISP hub is permanently there, they...
By Batpred , 2 days ago
-
RE: Electricity price predictions
@rob-of-york sounds like a term that Heidegger would...
By Papahuhu , 2 days ago
-
RE: Adding data centre electricity costs to domestic energy bills?
never ceases to amaze me.. Keeping steel works going ...
By Batpred , 3 days ago
-
RE: Boiler Upgrade Scheme funding reduced by circa £750 million in 2026 budget
Absolutely agree. The massive Hager CU my vaillant requ...
By Batpred , 3 days ago
-
RE: Octopussy cosy 6 experience
People who have a Cosy appear generally to be happy wit...
By JamesPa , 3 days ago
-
RE: Aerotherm and weather compensation
@jamespa I replied yesterday with detailed readings whi...
By DavidB , 4 days ago
-
RE: Marvel Heating liquidation
@editor This is an important point. each winter, you...
By davidnolan22 , 5 days ago
-
RE: Solar Power Output – Let’s Compare Generation Figures
Very nice. we’ve been super soggy here, but rather m...
By Papahuhu , 6 days ago




