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| Have multilevel house in MN. NG forced air heat and 3 ton a/c. No south/west shade and a/c runs a lot. Kitchen is on west side and is warm during afternoons with cooking chores after work. Wifey loves cold so a/c never shuts off. Would a properly sized new higher eff unit run any less? Or would it run the same but only use less power? Our current unit runs 80% of the time at XX watts. A new unit would provide the same cooling but consume less power? Would the vent temps be the same? |
Follow-Up Postings:
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- Posted by energy_rater_la (My Page) on Mon, Apr 30, 12 at 11:51
| in my area the unit should come on around 10 am and run until 9 pm in the heat of the summer. long run times remove humidity. short cycles- shutting on and off you don't say how old your system is or 13 SEER to 15-17 SEER is a good savings. if ductwork works well now, and provides sufficient new unit would consume less power. best of luck |
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- Posted by heatseeker (My Page) on Mon, Apr 30, 12 at 11:52
| sounds like something is wrong with your present system, have you ever had it maintained? |
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| Vent temps are ok. 12-14f diff? Cannot recall. Did service last year. Took off sheet metal exterior and vacuumed condenser and washed out fins. Ugh. Fun job. Louvers really bite for cleaning. Unit is 37 yrs old. Jokes on me I suppose. New unit would have paid for itself in elec savings yrs ago. |
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| "12-14f diff? " Should be larger. "Unit is 37 yrs old." Not worth much besides replacement or simple repairs. Checking charge would be a first step. |
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- Posted by heatseeker (My Page) on Wed, May 2, 12 at 14:45
| 37 yrs old I would bet you will never have a system last that long again but it needs to gooooo. |
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