I need to call a new service person

[Admin]

From the site email

Regards,

Site Administrator

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

I had a new Goodman high efficiency 115 thousand BTU.one stage furnace.
After reading some of your posts, I gather it may be too big for my house.
It short cycles, and locks down very often. My installer has dissappeared,
and I need to call a new service person. Is there going to be anything he
can do for me. I have a 2000 square foot ranch, and finished basement
heating was added. could someone please help.
Thanks
georgek11

[coolguysfl]

Your best bet --- find a contractor that has been in business for 20+ yrs.

Start from scratch with a load calc & duct design. Your contractor can use the existing materials & equipment as long as its appropriate.

Be sure to get a permit & do it right this time.

Good luck.

[Mr Bill]

2000 square foot ranch? man the cows and chickens and pigs sure must really be cramped.
http://i99.photobucket.com/albums/l286/mrbillpro/damadcow.gifhttp://i99.photobucket.com/albums/l286/mrbillpro/piggy.gif

[BaldLoonie]

Oh you're cute today MrBill :D

Yes, sounds big for the house but that shouldn't cause a lockout unless the limit is sticking open. A good tech should be able to evauate the situation and advice some changes.

[dash]

Call around ,ask for someone that can test the ESP(External Static Pressure) of the duct system,and has the fan data chart for your furnace and the specs on your cooling coil.

If they say they can get the specs and test the ESP,you probably have found the contractor in your area ,that can find and correct the problem.Now it may require a smaller furnace to correct ,or it could need duct modifications.

[town]

Originally posted by Admin
From the site email

Regards,

Site Administrator

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

I had a new Goodman high efficiency 115 thousand BTU.one stage furnace.
After reading some of your posts, I gather it may be too big for my house.
It short cycles, and locks down very often. My installer has dissappeared,
and I need to call a new service person. Is there going to be anything he
can do for me. I have a 2000 square foot ranch, and finished basement
heating was added. could someone please help.....................Where are you (state)
Thanks
georgek11

[georgek11]

For anyone that cares. My problem has been solved. On the high efficiency furnace there is a 2" PVC "chimney". It was terminated with a 2" cap, with a grate/grill on the end. It was restricting the air/exhaust. I cut it off, and the furnace now works perfectly. I will put a larger end cap on.
Thanks to anyone that responded.
Georgek11

[amickracing]

Originally posted by georgek11
I will put a larger end cap on.

Just leave well enough alone. Don't add any caps.

[smokin68]

I believe that grill's there for a reason...2 inch sounds alful small, but I don't work on gas so would have to look it up.

[vlux]

just guessing but 2" sounds small, should'nt it be 3" for 115k btu. Should do calc. on house to make sure furnce is right size. You may have just cut off[ cap] the tip of the ice berg. jmo

[BobbyBJr]

Yeah, I agree. A quick look at the Goodman product data for a 115,000 95% furnace shows a minimum vent size of 3". If you could post back your model and serial number, then someone could tell you for sure.

Bobby

[texas cooler]

Had the same thing happen to a Lennox 92%. Instructions are very specific on size of vent needed. Need to determine effective length as well if using elbows and such and increase pipe diameter.

[chris thomas]

The goodman 115,000 btu does require 3 ".

[georgek11]

The furnace itself came with a 2" opening for the "PVC" vent/chimney. It also came with a 2" bracket/gasket. I don't understand how it could be anything but a 2" pipe that would vent it. I will put a larger cap on it to let the exhaust flow freely. As for not putting a cap on it at all, a bird would probably build a nest in it during the moderate season. They build a nest in everything else around me. On the other hand the birds would probably go well with the cows and pigs, nice and cozy.
georgek11