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  1. Replies
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    I think we came up with a solution. We will use...

    I think we came up with a solution. We will use the joist space, but slide a metal duct inside. It requires reducing a return chase slightly (it currently is 32" wide and will be reduced by a...
  2. Replies
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    2,143

    Great thoughts. I would consider hiring a...

    Great thoughts. I would consider hiring a professional HVAC company, but when I was on the search for one 3 years ago to replace my furnace and AC I was unable to find a single company who would...
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    2,143

    I will discuss with the contractor tonight and...

    I will discuss with the contractor tonight and suggest that the wooden space must be lined with metal and sealed to create a duct.

    One other thought that occurred to me is that perhaps making the...
  4. Replies
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    2,143

    Is this Duct Modification Acceptable?

    I have hired a contractor to renovate my basement. One of the tasks involves relocating a low section of HVAC duct work to give more head room. Currently the duct is directly below the joists, but...
  5. Replies
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    10,534

    I'm not sure about your location, but natural gas...

    I'm not sure about your location, but natural gas cost about half as much this past winter than it did in 2008-2009. Don't forget to take that into account. Someone was telling me they were paying...
  6. Replies
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    12,423

    I have a natural gas Broilmate and can say it's a...

    I have a natural gas Broilmate and can say it's a great value bbq. You cannot compare it to the higher end units such as webber, but it heats fairly evenly (better than other cheap bbq's I have...
  7. Replies
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    5,241

    We have a 90,000 btu 95% furnace for our 2 storey...

    We have a 90,000 btu 95% furnace for our 2 storey plus basement that is slightly larger than 2800 sq ft (each floor is ~1400 sq ft). Our insulation may be better than yours (R32 in the attic and R12...
  8. Replies
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    5,241

    Just a homeowner, but go with the 115,000 furnace...

    Just a homeowner, but go with the 115,000 furnace as the 90,000 will not keep up on the coldest days. Unlike a/c's which you typically slightly undersize, a furnace should be slightly oversized...
  9. Replies
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    5,710

    I know that Carrier`s equipment is top notch,...

    I know that Carrier`s equipment is top notch, especially their Infinity line. If you cannot afford it, why not consider some other brands. I know in my area I received the highest quote from the...
  10. Replies
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    2,893

    Did you try calling other Carrier dealers in your...

    Did you try calling other Carrier dealers in your area?
  11. Replies
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    724

    I guess if the thermostat is set as 1 stage all...

    I guess if the thermostat is set as 1 stage all calls for heat are through W1 then.

    Thanks.
  12. Replies
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    2,182

    Thanks rundawg. interesting with the 60k...

    Thanks rundawg. interesting with the 60k furnace, but I guess it is what it is.
  13. Replies
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    2,182

    That was my best guess, although my inlaws old...

    That was my best guess, although my inlaws old furnace made much more noise from air flow with their old furnace. This is why I wanted to know a little more about cfm to see if my furnace is flowing...
  14. Replies
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    2,182

    Thanks for the information rundawg. Are these...

    Thanks for the information rundawg. Are these speeds for low stage or high stage? Also why would the 60,000btu allow for a lower speed than the 40,000btu unit does (430cfm vs 585cfm)?
  15. Replies
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    724

    Honeywell 2 stage thermostats

    I'm wondering if any signal is sent through the W2 terminal from a Honeywell 2 stage thermostat when the thermostat is setup as a 1 stage thermostat for a 1 stage furnace.
  16. Replies
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    Bryant Evolution Plus 90i Fan Speeds

    I did a quick search and came up empty so I'm hoping someone with the information can step in.

    I'm wondering what the minimum and maximum blower cfm's are for high stage and low stage heating...
  17. Replies
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    13,791

    I was thinking the same thing. Can one of...

    I was thinking the same thing.

    Can one of the pros estimate the max possible temp drop across the evap coil using the indoor and outdoor temps given by the OP:
    OAT DB: 83.9 *F
    IAT DB: 79
    IAT...
  18. Replies
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    1,954

    According to CSA F280: Outdoor design...

    According to CSA F280:

    Outdoor design temperatures:
    Heating: -27*C
    Cooling: 32*C

    Summer mean daily temperature range: 18*C
    Outdoor humidity: 9.7 g/kg
    Mean soil design temperature: 10*C
  19. Replies
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    1,748

    skizot, this doesn't really answer your...

    skizot, this doesn't really answer your questions, but is a comment from someone looking in from outside the box:

    Is your system cooling your house?

    If so, why not save the money you plan to...
  20. Replies
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    1,954

    The Canadian equivalant to Manual J is CSA F280. ...

    The Canadian equivalant to Manual J is CSA F280. F280 allows for a furnace upto 40% larger than what you calculate using design conditions. F280 says the outdoor design temperature for Dawson Creek...
  21. Thanks for the info Carnak. From your...

    Thanks for the info Carnak.

    From your description, it sounds like the requirement for ventilation in the winter (when condensation is likely to occur) is only required if you have a tight home. ...
  22. Why do you suggest that fresh air is only...

    Why do you suggest that fresh air is only required when the a/c runs as opposed to when the house is occupied? Is it to do with the way the houses are built or the climate?
  23. I believe it is actually $900 plus 15%. $500...

    I believe it is actually $900 plus 15%.

    $500 from the ecoenergy rebate for a 14.5 SEER or better (not including the furnace blower)
    $400 from the OPA for a 15 SEER or better (you can include the...
  24. Replies
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    1,397

    Have you looked at putting additional duct...

    Have you looked at putting additional duct insulation yet? You said in post 6 that the cooled air increased in temperature by 7 degrees. This is an inefficency that can be easily fixed by...
  25. I see you are from Ontario. Do you know about the...

    I see you are from Ontario. Do you know about the rebates available for both high efficiency furnaces and a/c's? You need to do an EcoEnergy audit of your house before you install the equipment. ...
  26. Replies
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    7,768

    Perhaps a pro can describe how a properly sized...

    Perhaps a pro can describe how a properly sized a/c should work on a design day and a cooler than design day.

    My understanding is that on a design day (at outdoor design temperatures), your a/c...
  27. Replies
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    1,677

    Darrell: I never noticed airflow in heating...

    Darrell: I never noticed airflow in heating since there was never a comfort issue. The whole house is very even in temperature in the winter. I reread beenthere’s post and do not think it applies...
  28. Replies
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    1,677

    This sounds accurate. The air comes out of the...

    This sounds accurate. The air comes out of the 2nd floor vents, but at such a slow speed that it does not mix well with air in the room (especially at ceiling level). However, if the main floor...
  29. Replies
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    1,677

    Darrell: unfortunately changing ducts is not an...

    Darrell: unfortunately changing ducts is not an option. The furance is in the basement and ducts are within finished walls/floors.

    I would not consider return air filter racks because the...
  30. Replies
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    1,677

    Thanks for the info beenthere. I'll give him a...

    Thanks for the info beenthere. I'll give him a call later tonight and see what he says about the subject. I figured I wanted to have a little background before calling.
  31. Replies
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    I believe my ducts have a lot of excess capacity...

    I believe my ducts have a lot of excess capacity as the fan runs at 1620 CFM in 2nd stage heating (lowest fan speed setting for my 90,000btu furance) and does not sound even close to being stressed...
  32. Replies
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    1,677

    What is the maximum safe CFM/ton?

    I recently had a 2.5 ton a/c installed in my 2 storey plus basement home located just north of Toronto. The house is about 1400 square feet per floor. The blower was initially setup to 1100 CFM...
  33. Replies
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    7,768

    Is this a new unit? If so, shouldn't the...

    Is this a new unit? If so, shouldn't the installing company make these adjustments for free? I know sometimess that easier said than done when dealing with contractors.
  34. From my experience I would check to make sure...

    From my experience I would check to make sure they commission the system properly. By commission I mean check and adjust subcooling and super heat on the a/c, adjust blower speed to what the system...
  35. Would accounting for the blower fan (assume 400...

    Would accounting for the blower fan (assume 400 cfm/ton) benefit the 2.5 ton system (1000 cfm for 1 hour) or the 3 ton system (1200 cfm for 36 minutes)? Assume nominal ratings for a variable speed...
  36. Replies
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    1,530

    Have you looked into taking the money available...

    Have you looked into taking the money available from the warranty and using it towards an entire new system installed by the contractor of your choice? This sounds like the best route if you can...
  37. Replies
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    This is probably the route I would try to pursue...

    This is probably the route I would try to pursue as well. I'm not sure an extended warranty would be enough in my mind (although I do not know the $ difference between the two).
  38. Replies
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    Hopefully a pro familiar with Trane can help, but...

    Hopefully a pro familiar with Trane can help, but I would imagine that an a/c that has a smaller warranty and less sound insulation would cost less.
  39. Replies
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    1,073

    send me an email and I'll send all their contact...

    send me an email and I'll send all their contact info. my email address is in my profile.
  40. Replies
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    1,073

    If the contractor believes this is the case, why...

    If the contractor believes this is the case, why would they recommend reusing the inside coil?
  41. Replies
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    1,073

    Are you aware of the rebates available to you? ...

    Are you aware of the rebates available to you? I'm in Markham and just replaced my system. You are eligible for a $500 rebate through the ecoEnergy program, $400 from the OPA, and you can also...
  42. Is it safe to use DOD on an a/c with a fixed...

    Is it safe to use DOD on an a/c with a fixed orfice instead of a TXV or are you risking problems?
  43. Replies
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    1,560

    You can try a worst case simulation... assume the...

    You can try a worst case simulation... assume the house is not as tight as you would like, add a degree or two to the design temperatures, assume that you will not pull the blinds, etc. Keep playing...
  44. Replies
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    1,560

    It doesn't really solve the problem... it just...

    It doesn't really solve the problem... it just masks it. Shouldn't 2nd stage in a 2 stage be just enough for design temp?
  45. Replies
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    721

    Why not compare the features of the Goodman to...

    Why not compare the features of the Goodman to the Trane and then look at the price difference. Are the difference in features worth the cost to you?

    At the end of the day the Goodman will heat...
  46. Replies
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    19,150

    What can be done if there is a mix of R22 and...

    What can be done if there is a mix of R22 and R410 parts? Does everything have to be replaced or can she keep one set and replace only what is needed?
  47. Replies
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    19,150

    Here is Ducane's official site:...

    Here is Ducane's official site:
    http://www.ducanehvac.com/ac_4ac13.php

    It says the 4ac13 is R410a and the 2ac13 is R22.

    I think you may have found your problem... Perhaps you can confirm that...
  48. Replies
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    In the ideal world this would be the case every...

    In the ideal world this would be the case every time, but in the real world it depends on the tech that comes out. Otherwise there would be no reason for homeowners to come to this board. There...
  49. Replies
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    teddy bear: I was wondering if you can shed some...

    teddy bear: I was wondering if you can shed some light on an article I read comparing the operating costs of a portable dehumidifier versus a whole home dehumidifier.
    ...
  50. Replies
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    Does it mean you should try to seal air leaks in...

    Does it mean you should try to seal air leaks in your home if you fall in this category?

    It seems like you're told to eliminate all air leakage, then told you need to mechanically ventilate. I...
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