Search:

Type: Posts; User: theslumlord

Page 1 of 2 1 2

Search: Search took 0.00 seconds.

  1. Replies
    15
    Views
    1,916

    Given the price of copper, I no longer use copper...

    Given the price of copper, I no longer use copper for plumbing but still stuck paying a really hi price for line sets. Is there a suitable non-copper product that can be used for line sets for R-22...
  2. I had a similar situation. Turns out the leak...

    I had a similar situation. Turns out the leak wasn't near the meters at all. The line underground from the street had cracked. The gas was actually coming up from a drain near the meters.

    The...
  3. Replies
    11
    Views
    782

    its really hard in my opinion, to attach a...

    its really hard in my opinion, to attach a basement to a system thats supplying the rest of the house. Basements have such different load profiles, that you risk never having a balanced system.
    ...
  4. Replies
    4
    Views
    1,613

    My HVAC guy (I handle the insulation end) quoted...

    My HVAC guy (I handle the insulation end) quoted a system that caused the owner to have a heart attack. Owner's home is very large ranch style home: 3k sqft on the ground floor with a full finished...
  5. Some here might find this interesting. It was...

    Some here might find this interesting. It was forwarded to me. The govt. has been trying to incorporate efficiency standards for hi-velocity systems, that takes into account that they work a bit...
  6. Replies
    10
    Views
    1,603

    3% of what? 3% of the total heat load? Crawl...

    3% of what? 3% of the total heat load?

    Crawl space heat losses depend on a number of factors. Biggest is how tightly sealed the space is. Older homes, in particular, get a lot of air leakage...
  7. Using a two speed system is more for humidity...

    Using a two speed system is more for humidity control under low loads (cloudy, but very humid summer day). When you have two floors, generally the load profile are rather different for both. Its...
  8. Replies
    5
    Views
    849

    have you tried craiglist.org?

    have you tried craiglist.org?
  9. Replies
    3
    Views
    676

    There are two main groups of ERV's Passive -...

    There are two main groups of ERV's

    Passive - Doesn't have its own fan. It integrates with your existing forced air system

    Active - has a dedicated fan

    You also have other options such as a...
  10. Replies
    10
    Views
    1,603

    I do insulation installations in your area. I...

    I do insulation installations in your area. I don't wan't to break a forum rule by giving you contact information here. I am doing a crawl space where I am turning it into a semi-conditioned space....
  11. oops

    never mind.. I see someone just started a similar thread below...
  12. I am in the process of designing a chilled water...

    I am in the process of designing a chilled water / Unico Hi-velocity system for a large suburban home. The home has very high late morning / early afternoon glazing loads, which then drop off later...
  13. I am spec'd out a Unico Hi-velocity system. Most...

    I am spec'd out a Unico Hi-velocity system. Most of the installers have gone back to metal ducts because Unico is putting waaaay too much of a markup on their rectangular fiberglass ducts. Round...
  14. Replies
    31
    Views
    4,323

    A common poblem I see are ducts in attics that...

    A common poblem I see are ducts in attics that are exposed. Ducts are minimally insulated and can lose upwards of 20% of their cooling load. Leaks are another problem. If the duct work was done in...
  15. I didn't see any valves. The lineset was brazed...

    I didn't see any valves. The lineset was brazed right to the unit.. unless they were behind the panel.
  16. There were two separate air handlers in...

    There were two separate air handlers in differents parts of the house. I didn't open the units up to look to see if they were using only one TXV valve.

    The owner said the system worked, except...
  17. Replies
    44
    Views
    3,620

    as the previous poster pointed out: Systems...

    as the previous poster pointed out:

    Systems are typically designed at an indoor temp of 75 F (78 F for Hi-velocity systems) with a swing of 3 F. During really hot weather, your house should hit...
  18. I took a look at a house in western Long Island...

    I took a look at a house in western Long Island that was in need of insulation. While there, the owner pointed out his current HVAC system.

    It consists of a single 3 ton condenser with two very...
  19. Replies
    1
    Views
    628

    I was using Armstrong for 1 ton condensers, but...

    I was using Armstrong for 1 ton condensers, but it appears they may have discontinued them. I know Trane makes ones that small. Do any other manufacturers as well? ANy using the newer R410a?

    I...
  20. Replies
    2
    Views
    712

    Fenestration (light entering via windows, doors,...

    Fenestration (light entering via windows, doors, skylites, etc), exposure, and insulation quality will have the greatest effects on the heating / cooling loads. Room size actually has very little to...
  21. never mind...

    I should have done a search first.. the topic of my post has already been covered.
  22. Replies
    47
    Views
    5,156

    insulation & returns

    As an earlier poster pointed out, you might need more insulation. If the insulation in the attic is fiberglass, it would be a good idea to blow about 6 inches of cellulose on top. Fiberglass...
  23. I in the process of specifying a Unico HV system...

    I in the process of specifying a Unico HV system for a large, residential home. I am in the process of try to evaluate if using a two speed system will be worth the extra cost / reduced reliability....
  24. I am doing a cooling load anaylsis on a large...

    I am doing a cooling load anaylsis on a large home. The laundry room is attached to the kitchen. Dryer is gas and is vented to the outdoors.

    I am trying to figure out a reasonable adder (on top...
  25. Replies
    12
    Views
    1,598

    I had a tennis ball get stuck in a roof drain...

    I had a tennis ball get stuck in a roof drain (flat roof) during construction. Water was halfway up the parapets when it was discovered. Water was pouring down clear to the basement (wiping out all...
Results 1 to 25 of 29
Page 1 of 2 1 2
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event