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 ·ProLog
 ·Verizon Online DSL
 ·voip.ms
| reply to cowboyro
Re: [Heating or Air Conditioning] Are these quotes reasonable? An ideally sized unit runs continuously. This is how efficiency is calculated on newer units: from steady state running. If it is over-sized and starts and stops a lot, the 16 SEER can quickly become a 13 SEER and all the extra money you spent for the higher efficiency is wasted.
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The difference between genius and stupidity is that genius has its limits. |
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 mattmagPremium,ExMod 2000-03
join:2000-04-09
NW Illinois
kudos:3 | said by pende_tim:An ideally sized unit runs continuously. You forgot to add "during the times of highest cooling demand". If its only 75 outside and your A/C unit is set to 70 and it runs continuously, you have a problem. 95 outside, different story---Yes, it should run much longer or near continuous. |
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| Yes, during highest demand conditions. |
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 cowboyroPremium
join:2000-10-11
Shelton, CT
 ·AT&T U-Verse
| reply to pende_tim
said by pende_tim:An ideally sized unit runs continuously. This is how efficiency is calculated on newer units: from steady state running. If it is over-sized and starts and stops a lot, Decent thermostats set a certain CPH rate. So 2 ton or 5 ton it would still run exactly the same number of times every hour as long as the setpoint can be reached. Not to mention that steady-state is reached in 30 seconds or so, making any efficiency loss irrelevant.
However if it needs to run all day then all the potential savings of a whole season are gone in 1 day.
I have done a ton of testing and real-life data acquisition to conclude that the difference is negligible. |
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