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Brilliant Sporty Blue Honda HR-V 1.5 iVTEC SE 6 Speed Manual
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Discussion Starter · #1 ·
Anyone else experience this on their HR-V, and if so, at what age and mileage, and what did you do about it?

End of last week started to notice a slight whiff of cat pee when I change the A/C direction to Face or Face and Feet. I have used Wurth AirCon Sanitiser every 6 months to prevent foostie smells, but apparently to no avail. I used a similar product at the same intervals on my previous vehicle and never had the cat wee smell. I did, howver, get a dealer A/C service two or three times during my 10 years and 110k miles of ownership, so thinking it may be worth a punt getting a dealer to do this.

Vehicle is approximately 5 1/2 years old with just under 40k on the clock. Was purchased at 4 years old, with 32k on the clock with a Full Honda Service History, which means the Air and Pollen Filter will each have been changed twice already, and will be due for replacement at its next service in February 2022.

Honda UK do a stand-alone AirCon Service, it does not state when this should be carried out or if this has been carried out previously on my vehicle. Also, does anyone know if this is just a check and top up of the system or a full recharge?
 

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2021 LX AWD Modern Steel Metallic
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I don't have 'eau du chat', but I was held hostage in my car last week in a market lot by a swarm of stink bugs. I managed to disperse them using the windshield wipers and washer fluid, and a spray bottle of Rain X all purpose cleaner. My air con now smells like commercial insect spray. None of the things I used had that smell 馃槴
 

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2021 Honda HR-V Vti-S
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60 Posts
Anyone else experience this on their HR-V, and if so, at what age and mileage, and what did you do about it?

End of last week started to notice a slight whiff of cat pee when I change the A/C direction to Face or Face and Feet. I have used Wurth AirCon Sanitiser every 6 months to prevent foostie smells, but apparently to no avail. I used a similar product at the same intervals on my previous vehicle and never had the cat wee smell. I did, howver, get a dealer A/C service two or three times during my 10 years and 110k miles of ownership, so thinking it may be worth a punt getting a dealer to do this.

Vehicle is approximately 5 1/2 years old with just under 40k on the clock. Was purchased at 4 years old, with 32k on the clock with a Full Honda Service History, which means the Air and Pollen Filter will each have been changed twice already, and will be due for replacement at its next service in February 2022.

Honda UK do a stand-alone AirCon Service, it does not state when this should be carried out or if this has been carried out previously on my vehicle. Also, does anyone know if this is just a check and top up of the system or a full recharge?
I will take a guess and say the cat has peed on the air inlet vent at the bottom of the windscreen, see yellow arrows in pic below.
If the smell is not there, then the other place it could well be, heaven forbid, is in your carpet near the cabin fan in the passenger foot well.

Car Wheel Tire Land vehicle Vehicle


That happened to a 1986 VL Commodore that I owned many years ago.
What I did to try and negate - eradicate the smell, was to buy a bottle of NILODOR, mix about 3 drops in 4 litres of warm to hot water and slowly pour it down the indicated vent, making sure you cover the full width. The excess water is taken away just like rain water is. The smell was still there.
Unfortunately for me, a bloody cat had peed on the carpet in the passenger foot well. I left a window open at a friends place due to the heat etc. as we lived in the Tropics.
I had to remove carpet from the car and treat it with diluted Nilodor, then left it to dry in the sun.

Product Liquid Rectangle Font Tire
CAUTION: Do not put undiluted Nilodor anywhere near rubber, it will melt it.


I accept no responsibility for any damage caused if you decide to follow my solution.
 

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Brilliant Sporty Blue Honda HR-V 1.5 iVTEC SE 6 Speed Manual
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Discussion Starter · #6 ·
@suparoo

I've ruled out cats as they would either trigger the tracker, or I would find paw prints on the pollen that seems to permanently cover the car.

Doing a quick search online indicates the smell could possibly indicate mould in the A/C system;

"An air conditioner gives off a pee-like smell when there is a build-up of mold in the unit. This odor is not from the mold fungus itself but the result of the byproducts or mycotoxins it creates. These mycotoxins generate ammonium (which is found in urine), hence the familiar unpleasant smell."

Part of the reason for posting was to find out just how indepth Honda's A/C service is, and should I take it to an A/C specialist for a full recharge.
 

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2021 Honda HR-V Vti-S
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@suparoo

I've ruled out cats as they would either trigger the tracker, or I would find paw prints on the pollen that seems to permanently cover the car.

Doing a quick search online indicates the smell could possibly indicate mould in the A/C system;

"An air conditioner gives off a pee-like smell when there is a build-up of mold in the unit. This odor is not from the mold fungus itself but the result of the byproducts or mycotoxins it creates. These mycotoxins generate ammonium (which is found in urine), hence the familiar unpleasant smell."

Part of the reason for posting was to find out just how indepth Honda's A/C service is, and should I take it to an A/C specialist for a full recharge.
@suparoo

I've ruled out cats as they would either trigger the tracker, or I would find paw prints on the pollen that seems to permanently cover the car.

Doing a quick search online indicates the smell could possibly indicate mould in the A/C system;

"An air conditioner gives off a pee-like smell when there is a build-up of mold in the unit. This odor is not from the mold fungus itself but the result of the byproducts or mycotoxins it creates. These mycotoxins generate ammonium (which is found in urine), hence the familiar unpleasant smell."

Part of the reason for posting was to find out just how indepth Honda's A/C service is, and should I take it to an A/C specialist for a full recharge.
I misunderstood your OP.
Purple Yellow Violet Font Gas
 

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Brilliant Sporty Blue Honda HR-V 1.5 iVTEC SE 6 Speed Manual
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Discussion Starter · #9 ·
A little disappointed, and surprised, to discover the refrigerant that Honda use in the HR-V is the older R134A, and not the more (well, ever so slightly more) environmentally friendlier R1234YF. Taking into account that Honda class their engines as Earth Dreams Technology, and they encourage you to use the ECON button, it slightly whiffs of double standards.

On the plus side, it's at least half the price of the other refrigerant for a A/C recharge.

At least now we know why every cloud has a silver lining, it's all that Honda R134A refrigerant sticking to them......
 

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2021 Honda HR-V Vti-S
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A little disappointed, and surprised, to discover the refrigerant that Honda use in the HR-V is the older R134A, and not the more (well, ever so slightly more) environmentally friendlier R1234YF. Taking into account that Honda class their engines as Earth Dreams Technology, and they encourage you to use the ECON button, it slightly whiffs of double standards.

On the plus side, it's at least half the price of the other refrigerant for a A/C recharge.

At least now we know why every cloud has a silver lining, it's all that Honda R134A refrigerant sticking to them......
They are probably using up the left over refrigerant or waiting for their current contract to expire with the supplier. :unsure:
"R134a is one of a number of common refrigerants that will be banned from use in new centrifugal and positive displacement chillers as of January 1, 2024."
 
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