What Determines the SEER Rating? 

Every time I work on an old 90s era Rheem/Ruud unit, I can’t help but laugh a little when I see the “super high efficiency 10 SEER” sticker on there. We’ve come a long way. 🤣

AHRI numbers only tell you what certain configurations *should* produce in terms of efficiency. If the system is installed properly and there are no issues with the equipment itself. I can't tell you how many times in my career that I've come across pretty looking equipment that doesn't cool well at all. If it doesn't cool well, it's not efficient. No AHRI number is going to do that for you. Minimum SEER2 is going to be 15 SEER, but put that up against the old equation it's 14.3 SEER. It would have been better to just stay with the older SEER calc and put the minimum to 16 SEER in my opinion. But those 16 SEER units tend to have many more pounds of refrigerant and when those systems leak refrigerant they make the global warming equation even worse. So the next step is to start banning refrigerants which will require you to replace your equipment again, then in another 10 years from now _if the path doesn't change somehow_ those new refrigerants will be banned as well to replace them with something else. California goes first. Good night and good luck.

I was able to get a higher Seer rated unit with my citys local rebate. I was able to get a 16 SEER unit for the price of a 13 SEER. The rebates were limited so I was lucky to get in. Thats the only reason I did, so I hope it works out for me over the next 15 years

It's going to be even more difficult discussing efficiency with customers when the DOE introduces SEER2, EER2, and HSPF2 next year. They're gonna think they're getting worse equipment- calling it now, lol.

I am doing an install and the indoor coil is 31 inches and to make a little harder; a gas water heater was installed on the right side at 6” from the gas furnace.

wow when I was being trained I was told to never match up a 5 ton indoor coil and a 3 ton compressor because the compressor would over work causing it to go out faster. Some of the warranty companies actually notate that if your outdoor condensing unit is not to exact specifications with the indoor along with the blower motor and manufacturers specs then all warranty is voided and the customer takes a hit twice. Everyone do their research before buying a hvac unit.

Fox family ✌️🤘✌️

When we look at seer rating for variable speed heat pump, is the rating for 100% capacity or min capacity? And how to find the different seer rating for running at both min and max capacity?

Please help me understand the AHRI ratings for the situations with lower air flows like you included in this example. I am looking at 5 ton Trane units. Air flows vary from 1720 CMF (362 CMF/ton) to 1315 CFM (362 CFM/ton). Great videos, by the way! Thanks,

Very nice explanation. I have a question about effeciency of the ECM motors Vs. the SPC motors and the replacement cost associated with them? If you have an ECM motor and the cost of replacement is so high that the savings of the SEER ratings can be eleminated as the repair cost out wieghs the energy savings? True or Not and can you please comment on this? Many thanks for great video's.

so if a get a real old unit and install a smaller compressor and tweak the txv so it will cool ill get a high seer rating sounds like that custom built deal a tech did up once upon time with old parts and twin pumps all controlled by custom board 😉

So how much it will cost me for a 4 ton. trane split unit?

If you can save on electricity with a 15/16 seer HP you're in luck. Video shows fundamentals. Now don't forget to take into account the chance a shading tree had which was damaged by wind and cut down by a storm!