HVAC Forum

1,655 topics in this forum

1. "Gasteam" radiators

   By johnmcq, November 6, 2009
   • 3 replies
   • 13.6k views
   • 
   • Bill Kibbel
   • November 7, 2009

2. "Insider" indoor heat pump

   By Richard Moore, October 11, 2007
   • 2 replies
   • 3k views
   • 
   • Richard Moore
   • October 15, 2007

3. 1/2" copper tubing suppying cast iron radiators

   By Inspectorjoe, June 13, 2007
   • 6 replies
   • 2.1k views
   • 
   • chicago
   • June 14, 2007

4. 10 feet to return a straight line?

   By Richard Moore, May 17, 2008
   • 5 replies
   • 1.8k views
   • 
   • Chad Fabry
   • May 17, 2008

5. 10 SEER repair

   By homnspector, June 9, 2006
   • 1 reply
   • 2.1k views
   • 
   • chrisprickett
   • June 9, 2006

6. 15 year old Mini split systems. If replacing the CU, what about the indoor unit?

   By MPdesign, December 2, 2020
   • 9 replies
   • 1.4k views
   • 
   • Les
   • March 21, 2021

7. 1940's chimney with "extra connection"

   By ejager, March 20, 2022
   • 1 reply
   • 583 views
   • 
   • Jim Katen
   • March 21, 2022

8. 1986 High Efficiency Furnace?

   By CNewhouse, August 18, 2021
   • 3 replies
   • 826 views
   • 
   • Mike Lamb
   • August 21, 2021

9. 1988 AirCo furnaces - repair or replace?

   By mmahdi, November 20, 2023
   • 3 replies
   • 678 views
   • 
   • Jim Katen
   • November 22, 2023

10. 2 cell cooling tower vs 2 cooling towers together

    By MPdesign, February 16, 2015
    • 1 reply
    • 1.5k views
    • 
    • Old Sailor
    • February 23, 2015

11. 3-Tiered Cake Return

    By Bill Kibbel, March 14, 2014
    • 20 replies
    • 2.6k views
    • 
    • mjr6550
    • March 19, 2014

12. 3900 sq ft - 3 ton unit

    By Erby, April 30, 2014
    • 15 replies
    • 4k views
    • 
    • mlparham
    • May 1, 2014

13. 3rd Line to Outside Compressor

    By Mike Lamb, December 8, 2013
    • 4 replies
    • 2k views
    • 
    • mlparham
    • December 14, 2013

14. 40 Amp Breaker Supplies Big Unit

    By randynavarro, August 21, 2007
    • 9 replies
    • 2.2k views
    • 
    • Terence McCann
    • August 22, 2007

15. 45 year old furnace still going!

    By Erby, December 6, 2012
    • 6 replies
    • 2.9k views
    • 
    • Jim Katen
    • December 8, 2012

16. 5 AM steam discharge

    By allseason, August 9, 2011
    • 8 replies
    • 2.7k views
    • 
    • allseason
    • August 10, 2011

17. 65 degrees outside, how much should A/C cool?

    By esch, October 18, 2009
    • 10 replies
    • 4.7k views
    • 
    • Bain
    • October 21, 2009

18. 8 inch vent in 2 x 12 rim joist?

    By Michael Brown, May 30, 2022
    • 7 replies
    • 899 views
    • 
    • Michael Brown
    • May 31, 2022

19. 80% gas furnace comparison

    By Pittsburghsasha, November 13, 2014
    • 12 replies
    • 2.3k views
    • 
    • Brandon Whitmore
    • November 15, 2014

20. 90 Plus Furnance Vents

    By Bryan, January 13, 2007
    • 6 replies
    • 2.3k views
    • 
    • StevenT
    • January 13, 2007

21. A bit of overkill

    By Chad Fabry, May 11, 2011
    • 12 replies
    • 2.3k views
    • 
    • Chad Fabry
    • May 12, 2011

22. A coil/Condensor sizing 1 2 3 4 5

    By fyrmnk, April 28, 2006
    • 119 replies
    • 69.3k views
    • 
    • fyrmnk
    • April 28, 2006

23. a couple of action shots from last week

    By plummen, December 11, 2011
    • 3 replies
    • 1.3k views
    • 
    • plummen
    • December 11, 2011

24. A draft inducing blower defect

    By mgbinspect, March 8, 2006
    • 20 replies
    • 3.9k views
    • 
    • Hearthman
    • August 18, 2010

25. A few golden oldies

    By Terence McCann, August 28, 2005
    • 7 replies
    • 2.4k views
    • 
    • Terence McCann
    • August 30, 2005