Type: Posts; User: Maikerum
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12-05-2012, 10:34 PM
Steve, they drop to 65 on the inside. Outside, it will be 20's or 30's. Not too bad, but not Hawaii.
Teddkidd, my gas and electric cost average $100 a month total. According to Duke Energy's...
12-03-2012, 11:06 PM
Thanks again, Teddkid, Beenthere, and Gravity. I will take some of all your advice, and the debate has been instructional.
I will see if I can lower cfm, first, just to 1000 from 1033, and then...
12-02-2012, 11:50 PM
12-01-2012, 06:04 PM
In this case and for my specific application, I agree with Gravity, even over Beenthere and Tedkidd, both of whom I respect very much and have learned a lot from.
The reason is that I like to do a...
12-01-2012, 05:42 PM
No, I just use the 2 inch pleat. What is written on it, is "Flanders 40 Prefilter". It was probably intended to be a part of a commercial system filter bank in front of bag filters. But it is just...
12-01-2012, 10:57 AM
Thanks, I did not know I could do that. It sounds like good advice.
I understand why locked into high fire would be economical, but why do I want to lower the cfms? Just wondering what the...
12-01-2012, 10:51 AM
I don't know if these filters have a merv rating. I use a 2 inch pleated Flanders 40 prefilter. I figure two inches is going to be better than one inch pleats. It should not be too restrictive used...
11-30-2012, 10:59 PM
Today I ran a system check on my furnace for the first time, a Carrier 80% two stage (54k btu output on high and 36 k output on low, oversized I know, but about as small as I could get, and probably...
11-30-2012, 10:38 PM
I think I found the problem. My wife replaced the filter two days ago, and because we use 2 inch pleats, it is a tight fit. So she installed it behind the filter box instead of in the filter box,...
11-30-2012, 10:27 AM
Two years ago I put in a carrier dual fuel system. Uses infinity thermostat. Has performed well.
Yesterday my son noticed the thermostat said "system malfunction". When I pushed the button to get...
10-02-2012, 09:21 AM
Thanks everyone, for the great advice. I was skeptical whether Mechanical Engineering consultants would have the sort of hands-on knowledge that I get from HVAC mechanics, but if you all are...
Thanks everyone, for the great advice.
It looks like the size will be 275 tons. It is for a 100,000 sf building in Georgia. That is what is there now, and I thought about reducing the size a...
09-19-2012, 10:53 AM
When I have to make a big decision to make, spending $200 to $300k, what is the best kind of consultant to use? This site is great, and I greatly appreciate the opinions I get here, but occasionally...
Yes, I probably should have given that information.
Between 250 and 300 tons.
I need to replace an old chiller. It is designed to be an indoor water-cooled chiller. I am curious if it matters whether it is centrifugal or screw type.
What are the advantages and...
Thanks, that is a great explanation. I appreciate you following up on my comment with this advice.
Well, I understand that it is a 20 ton unit made in 1993, anyway.
I could not follow most of the rest of the posts.
It is working well, and like I said, it is pretty quiet. It is getting old...
This chiller, it looks like it is an aircooled chiller.
How does it compress the refrigerent? It does not make the typical chiller sound I am used to hearing, much quieter.
How old is it, and...
08-10-2012, 02:24 PM
Attached are two photos of labels with model number and serial numbers.
Would anyone be so kind as to tell me the age and tonnage of these condensing units?
I appreciate having this forum to...
08-09-2012, 06:10 PM
Thank ya'll very much!
08-09-2012, 04:38 PM
Can anyone tell me the age and tonnage of the Lennox unit in the photo?
Good afternoon everyone.
Attached is a photo of a unit nameplate. Can anyone tell me how many tons of cooling this is? I am guessing it does not do any heating.
Thanks all, for the lively debate and information on this question. Sounds like a number of opinions out there, and a number of variables to consider.
In this building, the boiler actually can't...
I am a Southerner and do not have a lot of experience with boilers and steam heat or hot water heat, but recently I went to inspect a building for general operating issues--not HVAC--up north in a...
At one building, we are replacing an old rooftop gaspack unit, 7.5 tons cooling, 90,000 btu heating.
We are being quoted a York ZF090N10N2AAA5. They are replacing a York with a York, like for...
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