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helpless handyman 11-27-2006 03:04 PM

Friedrich A/C Advise
Hi, I am about to purchase a Friedrich Wallmaster A/C Thru wall mount. I am wondering which would be the most efficient when it comes to electricity?

Friedrich 14,700 BTU's
EER 8.7
V 1693 Watts 7.7 Amps
Friedrich 13,500 BTU's
EER 9.5
115 Volts
1415 Watts 12 Amps

I know the higher the EER the better, but one of these is 115 Volts, the other is 220Volts. I was told 220 volts is much cheaper to run. Looking for the experts on this. Thanks

#CARRIERMAN 11-27-2006 03:10 PM

Hi helplesshandyman

If you have the ability to do so, the 240 unit is definatley cheaper to operate. When it comes to electric heat you will definately be money ahead. But if they have it available look into a heat pump version with electric backup. Let me know if I can help any further, I would also reccomend getting mdshunks opinion he is pretty sharp also.

Good luck

helpless handyman 11-27-2006 03:23 PM

Thanks, I will wait on MDSHUNKS opinion as well. I am in the process of installing a unit, 110 or 220 isn't a problem since my electrician will be in next week to do the line. I figure the 220 is cheaper to run, only a/c I am not purchasing a a/c heat unit. The only thing is that the 220 Volt has an EER of 8.7, and the 115 volt is 9.5 EER. I have a local guy that has two units and is getting rid of them for like half the price! Thanks, I will wait on MD!

mdshunk 11-27-2006 08:02 PM


Originally Posted by helpless handyman (Post 24971)
230/208 V 1693 Watts 7.7 Amps

115 Volts 1415 Watts 12 Amps

Electricity is billed in kilowatt hours.

The 230 volt unit will rack up 1.693 kilowatts per hour that it runs
The 115 volt unit will rack up 1.415 kilowatts per hour that it runs.

Without investigating further specs on each unit, I can say preliminarily that the 115volt unit might have to run a bit longer to match the BTU's of total cooling that the 240 volt one is rated at. It would be nice to have the models on these units. If they are both the same unit, with the exception of the voltage and EER, the 115 volt unit will be cheaper to operate. Wait.... I see now that the 115 volt unit is a tad lower in BTU's. It will have to run a tiny bit longer to match the performance of the 230 volt unit. It might be a wash, in that case.

Kilowatts is kilowatts, and it matters not what voltage it comes from. The advantage to the higher voltages comes with smaller wire gauge sizes, thus lowered installation costs. There are no efficiencies gained by operating otherwise identical equipment at higher voltages. Only lowered branch circuit install costs.

#CARRIERMAN 11-27-2006 09:02 PM

Hi helplesshandyman

This is why I wanted you to get his opinion also. The reason that I personally recommended the 240 volt is for the recovery rate over the 115. Anyway the ultimate decision is yours. I like to have MD's opinion I really think he is a sharp cookie.

Good luck

Wray 04-20-2008 01:56 PM

I have a model TEC15K50STC.... It probably doesnt have 15 hours on it... it was installed new in '99 ... in 03 I had to have replaced (under warranty) most of the "flex drive system... today I ran it for an hour or so, then poof it quit again.. they say it has a "belt".. no if I could only get to it, and if that were the only problem.. With as little as I have used this I would NOT recommend them to ANYONE...

Any advice on this will be greatly appreciated.


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