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Old 06-03-2008, 02:23 PM
Location: Triangle NC
425 posts, read 1,264,181 times
Reputation: 222


How often does a central a/c system and gas furnace require tune ups from service professionals? Is there any type of maintenance we should take care of ourselves (other than changing the Filtrete filters )?

We are new to both of these systems as we previously had an oil furnace and window a/c units (northeast).

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Old 06-03-2008, 02:30 PM
Location: Looking East and hoping!
28,227 posts, read 18,394,894 times
Reputation: 2000000790
We have semi annual checks, cleaning if needed. Spring they do the a/c, fall the furnance (forced air) and pay $140 annually. We also change our filters the 1st of every month.
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Old 06-03-2008, 08:27 PM
27,862 posts, read 31,502,400 times
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Before each cooling and heating season preferably. A/C filers changed monthly unless you have a large media filter and then change per esp.
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Old 06-03-2008, 09:10 PM
Location: Knoxville
4,041 posts, read 18,296,186 times
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They need to be serviced once/year. You can do the heat in the fall, and the a/c in the spring, or do them both at the same time in the spring. It has to be warm enough to run the a/c.

As far as filters go, you will find your own timing. I have three returns in my house, and all three filters are on a different schedule. Once a month is the easiest, and works best for the most part. However, you may find that your filter gets dirty in 3 weeks, or it may still be clean at 6 weeks.
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Old 06-04-2008, 09:59 PM
Location: Texas
5 posts, read 28,794 times
Reputation: 10
The best way I have found to remind people to replace typical filters is to do it when you get your electric bill. They don't forget to send you one every month!!
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