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I stayed a few months at a large motel-complex, 150 units. While I was staying there, they had a team come in and pull each and every PTAC unit and pressure-wash them.
I assume this sort of maintenance is common throughout the USA.
Location: We_tside PNW (Columbia Gorge) / CO / SA TX / Thailand
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Quote:
Originally Posted by Swizzle Stick
Mild winter? Wait until summer.
That's our case on left coast, and in Texas properties.
High volume building boom has HVAC contractors swamped.
Schedules out 8-12 weeks. For new installs, 6 weeks for service refresh. 1-2 weeks for emergency.
R22 is the only HCFC refrigerant which is/was NOT an ozone depleter and NOT a green-house gas contributor, (if not zero, as close to zero as many of the replacement refrigerants). However, all the other HCFC class refrigerants were very bad boys and girls in both regards so the entire class of refrigerants were banned. R22 could have been excluded from the ban.
Some of the replacement refrigerants are very dangerous! The European community has even banned use of the refrigerant currently being used in US vehicles as a replacement for R134a which was the replacement for R12. The European concern is the risk of these A/C systems exploding and igniting in vehicle crashes and consuming the vehicles in flames.
Note the irony here, R12 was banned for environmental reasons, the replacement refrigerant for R12 (R134a) is now banned, and its potential replacement (R1234yf IIRC) is banned in some global areas as being a human safety/vehicle safety risk.
R22 is the only HCFC refrigerant which is/was NOT an ozone depleter and NOT a green-house gas contributor, (if not zero, as close to zero as many of the replacement refrigerants). However, all the other HCFC class refrigerants were very bad boys and girls in both regards so the entire class of refrigerants were banned. R22 could have been excluded from the ban.
Some of the replacement refrigerants are very dangerous! The European community has even banned use of the refrigerant currently being used in US vehicles as a replacement for R134a which was the replacement for R12. The European concern is the risk of these A/C systems exploding and igniting in vehicle crashes and consuming the vehicles in flames.
Note the irony here, R12 was banned for environmental reasons, the replacement refrigerant for R12 (R134a) is now banned, and its potential replacement (R1234yf IIRC) is banned in some global areas as being a human safety/vehicle safety risk.
Where are you getting this info?
R-22, so far as greenhouse gasses, has a GWP (Global Warming Potential) number of 1760, that's 1760x worse than CO2 per volume. For reference R-12's GWP is 2400 with horrible ozone depletion numbers too.
1234YF has not been banned by The EU it is instead actively encouraged. FWIIW 1234YF has a GWP of less than 1 and ODP of 0. As of 2018 the only automakers who didn't use 1234YF.......Acura, Infinity, Nissan and Volvo.
ETA - I'm trying to post a list of refrigerants with GWP and ODP numbers but can't make it work.
R22 is the only HCFC refrigerant which is/was NOT an ozone depleter and NOT a green-house gas contributor, (if not zero, as close to zero as many of the replacement refrigerants). However, all the other HCFC class refrigerants were very bad boys and girls in both regards so the entire class of refrigerants were banned. R22 could have been excluded from the ban.
Some of the replacement refrigerants are very dangerous! The European community has even banned use of the refrigerant currently being used in US vehicles as a replacement for R134a which was the replacement for R12. The European concern is the risk of these A/C systems exploding and igniting in vehicle crashes and consuming the vehicles in flames.
Note the irony here, R12 was banned for environmental reasons, the replacement refrigerant for R12 (R134a) is now banned, and its potential replacement (R1234yf IIRC) is banned in some global areas as being a human safety/vehicle safety risk.
Though for HVAC (e.g. commercial chiller rooms) the primarily refrigerant danger is a confined space emergency where a refrigerant leak causes oxygen depletion which can cause quick death.
My townhome was built in 2002 and still has the original HVAC. It's not terribly efficient, but it does the job for now. A lot of times people will put off a big purchase like this until they absolutely cannot any longer.
Maybe in San Diego, folks are just buying more fans instead of replacing HVACs at high $$$ - especially since SDG&E is raping it's customers with higher fees and the BS TOU rates (sneaky way of getting more money).
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