|
| my old 3 ton central air system died. compressor is shorted. i have a 2 ton external unit that i can swap out. both systems are same age, and r22. my donar unit has been sitting in heated garage for 15yrs. looks very nice. found a tech who will do swap with my parts. but he thinks both units are 3 ton. i just found out today it is 2 ton. so, is it a no go? how would system work with original sized evap and 2 ton comp/condenser? tech likes that i have entire external unit so all parts match. contactor, cap, fan, comp. |
Follow-Up Postings:
|
- Posted by veesubotee (My Page) on Sun, Aug 21, 11 at 7:44
| Sitting around for 15 years!! I wouldn't do it. Actually, I wouldn't do it if it was just removed from service. Assuming your original unit was sized correctly, you should be concerned about losing 1/3 of your rated capacity (assuming the unit will deliver its rated capacity). |
|
- Posted by energy_rater_la (My Page) on Sun, Aug 21, 11 at 9:27
| there are lots of theads about installing used units not many have happy endings. on another forum one of the hvac guy's tag line refrences the money from fixing these botched installs. lots of money in it..for the one who makes it right. not many reputable hvac companies in my area will install an old used unit. and warrenty it..LOL! 15 years ago..unit at BEST would be 10 SEER that is also to consider is that you are installing a smaller unit best of luck. |
|
| Groan! Well I knew it was a dumb question. Furnace/blower/evap is not changing so airflow is unchanged. Just less cooling at evap. I would love new system but am short funds. |
|
- Posted by veesubotee (My Page) on Sun, Aug 21, 11 at 13:37
| The maximum airflow of the 2-ton unit may NOT be the same as you're current unit runs. In any event, it would be set to run at about 800 CFM, (where you were running around 1200 CFM). So, not only would you be short on BTUs, but also airflow. V |
|
| So guy on CL has a 3ton unit for sale. Says he got it and found he needed a smaller unit. Maybe we could swap? |
|
- Posted by veesubotee (My Page) on Sun, Aug 21, 11 at 15:55
| Was it installed--then he discovered 'it was too big', then cut it out? GOOD LUCK. |
|
| Joe, If you are short on funds then you should not be taking a gamble on a used unit. My advice would be to buy some fans and wait until spring to have a properly sized unit installed by a good contractor. |
|
- Posted by heatseeker (My Page) on Mon, Aug 22, 11 at 8:51
| Cheap never pays off period |
Please Note: Only registered members are able to post messages to this forum. If you are a member, please log in. If you aren't yet a member, join now!
Return to the Heating & Air Conditioning Forum
Instructions
- You must be a registered member and logged in to post messages on our forums.
- Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review the contents and make changes.
- After posting your message, you may need to refresh the forum page in order to see it.
- It is illegal to post copyrighted material without the owner's consent.
- HTML codes are allowed in the message field only.
- No advertising is allowed in any of the forums.
- If you would like to practice posting or uploading photos, please visit our Test forum.
- If you need assistance, please Contact Us and we will be happy to help.