1234yf definitely underperforms compared to 134a. It works best above 1k rpm, but at idle it’s cr@p.Its because they picked 1234yf refrigerant for CAFE credits. R134a is 30% more efficient and also 100% compatible while being 8% of the cost of 1234yf as well.
If you ever have to open the system you may as well replace the fittings and put 134a in.
"The R-1234yf CAFE credits are 13.8 g/mi for cars, 17.2 g/mi for trucks. (GWP, a metric used by environmental regulatory agencies worldwide, is a measure of how much a given mass of a gas contributes to global warming. It is a relative scale which compares the amount of heat trapped by greenhouse gas to the amount of heat trapped in an equal mass of CO2. The GWP of CO2 is by definition 1.)
The value of storing CAFE credits for a low GWP refrigerant enticed Fiat Chrysler Automobiles (FCA) into beginning its changeover in 2014MY. General Motors has had just one entry in that period, the Cadillac XTS, but GM will be virtually across the board by the end of this year. Ford reportedly will begin its changeover in April with the Escape, but no details of its rollout are available. Sending vehicles with either refrigerant down the same assembly line is not a difficult process.
Warranty payments
The "street retail" price of R-1234yf—over $100 lb/ $220 kg has reportedly dropped slightly for volume buyers, and there are internet advertisements (of unknown validity) for as low as $72.50 lb ($160 kg). However, that's still much higher than the typical $3 lb/$6.60 kg for R-134a.
FCA's list price for R-1234yf is per ounce—because its dealers are instructed to bill the factory only for the additional amount (total refrigerant charge at the conclusion of the repair, less amount recovered from the vehicle system at the start). The recovery/recycle/recharge machines have a charge accuracy of ±1 oz and print out the amount added; the printout must be attached to a warranty claim."
I have a friend that has done several r134 swaps and from what I hear they work good if not better, that said he has not done a Ram truck yet. When I need to recharge my system, it will get R134.1234yf definitely underperforms compared to 134a. It works best above 1k rpm, but at idle it’s cr@p.
I’m also curious if anyone has swapped to 134a.
The cost would negate the benefits.Know anyone that has replaced with r134a? I'm wondering if the temps would drop
I've had my 1500 for almost 3 months now and have been pretty disappointed in the A/C and "ventilated" seats. Granted I'm in Houston and we've been getting 5-6 days in a row of 102-103.... But I am coming from driving a 2014 Ford Fusion Titanium for the past 8 years... black on black and it was waaaay colder A/C and the "cooled" seats were ice cold too! When I turn my Ram's seats on, i can barely feel it, and it's not cold at all... I guess they truly are just "ventilated" seats though. Why couldn't they have installed "cooled" seats! aaarrrggghhh!
oh, and by the way, I have full Luxor ceramic on all windows/windshield.
If you have 2019, 2020 model year, then do the TSB. don't remember the TSB number.
It is pretty involved - they will remove the dash and change many parts. there is big kit that they have to order and it will take 2 days to get it done
Prior to the TSB, my AC was OK - around 48 degrees. Now it is running in mid- 40s.
I live in AZ and summers are miserable, after the TSB my AC is tolerable
the write up is on page 64 currently
I believe the fan pulls air through the seat. A piece of paper on the seat back will stick if the fan is running and fall when it's switched off.All "cooled/ventilated" seats are is a fan underneath projecting cabin temperature upwards thru little holes in the seats. If the cabin isn't cool, especially at floor level, you ain't getting "cooled" seats.
Are people thinking the seats have mini a/c's under them?> LOL
If you’re plan on leaving it long term, I would do the hack not the pinch.How long has your line been pinched? Any sign of wear or risk that it could cause a leak?
Clamp has been on just a couple days. Make sure you pinch it a little ways up the hose to where the outer protective mesh starts, just adds a little more protection, and no need to clamp down hard on the hose, just to the point where it's squeezed good, but still leaves a little flow for the water. I don't believe there will be any issues with damaging the hose. The clamp may be on for 3-4 hot months, then I will take it off for the rest of the year since I don't need peak performance during the cooler months. I'm telling you, the difference is DRAMATIC! ***on edit** For the first time I actually had to take it OFF " max ac/lo"...and set it to 67 degrees, it was actually TOO COLD! lol.How long has your line been pinched? Any sign of wear or risk that it could cause a leak?
1234yf uses the same fittings as r12, so any r12 to R134a kit would work. So if like $15 in fittings and $20 in refrigerant is too expensive sorry.The cost would negate the benefits.
Why risk f'ing up your a/c system? Bet that's more than $35, eh? Guess common sense doesn't prevail sometimes?1234yf uses the same fittings as r12, so any r12 to R134a kit would work. So if like $15 in fittings and $20 in refrigerant is too expensive sorry.
What is the VENT temp?been pinched for
Clamp has been on just a couple days. Make sure you pinch it a little ways up the hose to where the outer protective mesh starts, just adds a little more protection, and no need to clamp down hard on the hose, just to the point where it's squeezed good, but still leaves a little flow for the water. I don't believe there will be any issues with damaging the hose. The clamp may be on for 3-4 hot months, then I will take it off for the rest of the year since I don't need peak performance during the cooler months. I'm telling you, the difference is DRAMATIC! ***on edit** For the first time I actually had to take it OFF " max ac/lo"...and set it to 67 degrees, it was actually TOO COLD! lol.
Actually, many car models use thermoelectric technology to cool the seats, instead of just a vent fan moving cabin air through the seats. I have owned several vehicles with this technology, including a 2009 Buick Enclave and a 2014 GMC Sierra Denali. The AC seats work way better that the regular ventilated seats and cool your butt and back almost instantly, instead of having to wait for the cabin temps to come downAll "cooled/ventilated" seats are is a fan underneath projecting cabin temperature upwards thru little holes in the seats. If the cabin isn't cool, especially at floor level, you ain't getting "cooled" seats.
Are people thinking the seats have mini a/c's under them?> LOL