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!
How to Clean a Y-Strainer Filter
Flow errors are among the most common issues homeowners face with their heat pumps, as discussed on the Renewable Heating Hub forums. Often, the culprit is a blocked Y-strainer filter, which can restrict the system’s flow and cause operational issues. The good news? Cleaning the filter is simple and can be done in a few easy steps.
Why Clean the Y-Strainer?
The Y-strainer filter plays a crucial role in preventing debris from circulating through your heating system. Over time, sludge, rust and other particles can accumulate, leading to reduced efficiency or even flow errors. Regular maintenance helps keep your system running smoothly.
Step-by-Step Guide to Cleaning the Y-Strainer
1. Prepare: Grab a bowl or container to catch any water and a spanner or water pipe pliers.
2. Shut Down: Turn off the heat pump and wait for the distribution pumps to stop.
3. Isolate the Filter: Locate and close the valves on either side of the Y-strainer.
4. Loosen the Nut: Place your bowl underneath the strainer and use your spanner to loosen the nut (lefty loosey). Once loose, remove the nut by hand.
5. Clean the Filter: Take the gauze filter and nut to a sink. Rinse them thoroughly under running water, ensuring all debris is removed.
6. Inspect: Check the water collected in your bowl – it’ll give you an idea of how dirty your system is.
7. Reassemble: Reinsert the clean gauze filter into the nut and screw it back onto the strainer (righty tighty). Tighten by hand first, then snug it up with your spanner.
8. Check for Leaks: Slowly reopen the valves while watching for leaks. If there’s any seepage, isolate and re-tighten.
9. Restart: With no leaks and the valves fully open, restart your heat pump.
When to Call for Help
If flow errors persist after cleaning the filter, the issue might lie elsewhere. Consult a heating engineer or your heat pump manufacturer for further support.
Routine cleaning of the Y-strainer can significantly enhance your system’s performance, keeping your home warm and your heat pump efficient.
Get a copy of The Ultimate Guide to Heat Pumps
Subscribe and follow our YouTube channel!
Thanks for this guide @editor - I managed to clean mine with the help of your guide without any mishaps 😀
A suggestion for a natural follow on - a similar guide for cleaning a magnetic filter?
Samsung 12kW gen6 ASHP with 50L volumiser and all new large radiators. 7.2kWp solar (south facing), Tesla PW3 (13.5kW)
Solar generation completely offsets ASHP usage annually. We no longer burn ~1600L of kerosene annually.
@old_scientist nice suggestion, but we had our magnetic filter removed a few years ago. If anyone wants to volunteer a video, we'll gladly edit and publish it.
Get a copy of The Ultimate Guide to Heat Pumps
Subscribe and follow our YouTube channel!
- 26 Forums
- 2,689 Topics
- 63 K Posts
- 937 Online
- 7,098 Members
Join Us!
Installer Finder
Degrees of Separation
Latest Posts
-
RE: How do I set up Tesla Powerwall export for saving sessions since AI Takeover?
@old_scientist All set now - calling it “Manual” as thi...
By Toodles , 11 minutes ago
-
RE: Summer heat is becoming the new winter cold in the UK. What are you doing about it?
Good question I have aggressively managed window shad...
By JamesPa , 19 minutes ago
-
RE: Electricity price predictions
@majordennisbloodnok Similar, although no heat pump h...
By IanMK13 , 1 hour ago
-
RE: How to heat a bathroom when using an air to air heat pump?
We have large towel rails in our bathrooms and accordin...
By Batpred , 3 hours ago
-
RE: vaillant arotherm plus - Failure - DHW
As expected it failed to run late yesterday with the sa...
By trebor12345 , 3 hours ago
-
RE: Anyone have experience with Daikin Multi+ for air to air & hot water?
@batpred That's interesting. The reason we are looking ...
By Falesh , 12 hours ago
-
RE: Plug and play solar. Thoughts?
i would have thought they would only put out ac current...
By Batpred , 13 hours ago
-
RE: Minimum and Zero Disrupt Heat Pump Installations
Personally, I don't always rate the "payback on install...
By HeatNoob , 14 hours ago
-
RE: Adding additional Solar Panels to a DC coupled battery system
@transparent thanks. Will be sure to keep a record of s...
By bontwoody , 14 hours ago
-
@jamespa Well, something along the lines of "three buse...
By ian33a , 19 hours ago
-
I was researching how to keep my loft area cool during ...
By David999 , 19 hours ago
-
I'd say it's up to you to decide between these two beha...
By bobflux , 1 day ago





