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  1. Replies
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    This load is not likely. Your contractor...

    This load is not likely.

    Your contractor should perform a Manual 'J' and produce the results with explanation. Ask them for a factory verification, the local supplier can help them out.
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    Nearly every supplier of gas-fired equipment will...

    Nearly every supplier of gas-fired equipment will do a Manual 'J' for the contractor, usually at no cost to them.

    There is no excuse.
  3. Replies
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    1,678

    If you find three contractors that can show you a...

    If you find three contractors that can show you a sample of their ACCA Manual 'J' heat load and take the bid from the guy with the lowest heat load, not price. You will have a winner.

    Heat load...
  4. Replies
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    After 5 years or so you will get tired of the...

    After 5 years or so you will get tired of the work and the filth, especially on the second floor. A wood boiler perhaps in the basement or outside. Mini splits for the second floor to cool all.
  5. It depends on the cost of fuel and the loads. ....

    It depends on the cost of fuel and the loads. . My natural gas PV water heater added about $25/month the the winter time fuel bill while heating the two car garage to 50F circa 1978 garage. The...
  6. Here in Minneapolis we have thousands of home...

    Here in Minneapolis we have thousands of home with air-over-water HVAC systems. Since we get the worst summers and winters people will not go without cooling and know the basement is going to be damp...
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    Capacity and SEER is part of the rating process....

    Capacity and SEER is part of the rating process. If you install a high velocity cooling system and find it does not perform as designed, look to the designer and installer. Having grown up in tin and...
  8. It is true that setup is significant for spray...

    It is true that setup is significant for spray foam applicators but here in Minneapolis we pay by the board foot. Still, this did not stop me from foaming my 1921 balloon frame from rim joist to...
  9. Just reviewing this old thread and wondered how...

    Just reviewing this old thread and wondered how it all came out. Appears to be too much boiler for this application but an darn nice boiler in deed.
  10. And three times too big! Effectively...

    And three times too big! Effectively disqualifying the candidate.

    It is not easy. We do heat loads, canvas for good suppliers and through them find competent, committed, service oriented,...
  11. Doug has it right. Though I would argue that cast...

    Doug has it right. Though I would argue that cast iron is not necessarily easier to install but much more forgiving since 20% of the energy is wasted up the flue. And he is very conservative in his...
  12. You have the right idea, if not the right...

    You have the right idea, if not the right equipment. A properly applied, sized, installed and maintained condensing boiler will last 20 years. We have serviced one of the "worst" Munchkins, now 13...
  13. Most of our work is residential boilers and the...

    Most of our work is residential boilers and the majority of those (90%) are condensing--only condensing equipment can be honestly called "high" efficiency.

    Most of the boilers sold today just...
  14. Replies
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    fire has it right, for starters. Then it is...

    fire has it right, for starters.

    Then it is about matching the right appliance to the jobs at hand.

    First, the loads; their size, frequency and relative priority. Local designs normally...
  15. Replies
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    A ducted return air high on an inside wall will...

    A ducted return air high on an inside wall will improve cooling performance. If they can do a Manual J they can consult on the return...
  16. Replies
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    1,678

    The best way to choose a heating contractor is to...

    The best way to choose a heating contractor is to ask for a sample of his ACCA Manual 'J' calculations for a similar house. We do them on every boiler and furnace we install.

    Most of our smaller...
  17. When I was a boy, but I got over it :) My Dad...

    When I was a boy, but I got over it :)

    My Dad was a real Union tinner, but I still can't build an offset on the bench and forget about a vaned elbow!
  18. I installed a Rheem furnace and AC for my brother...

    I installed a Rheem furnace and AC for my brother 15 yrs ago. Easy to service and still going strong.
  19. Radiate the basement floor and consider panel...

    Radiate the basement floor and consider panel radiators instead of fin-tube baseboard. The lower operating temperatures will make the new condensing boiler happy.

    When we design hydronic systems...
  20. Replies
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    1,524

    Please go on...

    Please go on...
  21. Replies
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    463

    Yes, but why guess? Have an ACCA Manual 'J' heat...

    Yes, but why guess? Have an ACCA Manual 'J' heat load done before you switch. This also an excellent way to choose a contractor to do it, since the best contractors insist on doing the math before...
  22. Replies
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    There is no substitute for hydronic heating. We...

    There is no substitute for hydronic heating. We design and install both but when it gets cold outside radiant heating is more comfortable, quieter and when done properly costs less to operate than...
  23. The thermal mass of your cast iron radiator is 10...

    The thermal mass of your cast iron radiator is 10 times that of the towel radiator you want. First the heat load and then a radiator compatible with the radiation controlled on the same thermostat....
  24. You have a system running under design...

    You have a system running under design conditions. A wet head's wet dream.

    All motors want to run. The blower on my furnace has been going for the last 13 years of it's 20 year life.

    My pump...
  25. That's call scorched air. If you want comfort you...

    That's call scorched air. If you want comfort you install radiant heating.

    Heating the lower level will not effect comfort on the upper level unless the floor boards are expose e.g. unfinished...
  26. I stand corrected, but still wouldn't do it to...

    I stand corrected, but still wouldn't do it to save 1 or 2 dollars US. Seriously.

    We are leaning towards PP depending on the application.

    Tinners get away with everything...
  27. The only saving you will get is that from taking...

    The only saving you will get is that from taking the load off from the basement. It will be the most comfortable part of the house.

    I would advise after comparing propane to electrical costs. We...
  28. Listen to JB. Cell core is fine on the intake...

    Listen to JB.

    Cell core is fine on the intake but no gas-fired appliance in N. America is approved for cellular core PVC or ABS. You could kill yourself and others.
  29. Replies
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    How much do you spend heating water? What do...

    How much do you spend heating water?

    What do you think you save by decreasing the heat loss from the water heater by 3%?

    Listen to the oil tech. He is trying to save your life.
  30. Replies
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    A condensing boiler will have outdoor reset...

    A condensing boiler will have outdoor reset built-in and thrives on low temperature radiant floors. Just make sure it is not too big for the load.
  31. Replies
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    We average one a month and will double that this...

    We average one a month and will double that this year. It will turn a regular or condensing tank-type water heater into a combi. Perfect for low loads or micro-zones.
  32. Replies
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    Unless you have internal loads e.g. lighting,...

    Unless you have internal loads e.g. lighting, plasma, computers, the loads both heating and cooling will be in the single digits.

    Exhaust ventilation would be the max needed though dehumidifier...
  33. Tankless water heater... Steam is certainly...

    Tankless water heater...

    Steam is certainly the answer. Too bad you don't have radiant floors. I can keep my ERV on, take a shower, stay warm...
  34. More bad advice. It should be obvious by now...

    More bad advice.

    It should be obvious by now that every good HVAC system begins and ends with an accurate ACCA Manual 'J' heating and cooling load analysis performed on dedicated software...
  35. I have a hot roof over my 1921 remodel. 6" of 2#...

    I have a hot roof over my 1921 remodel. 6" of 2# foam in the attic and 3" in the dormer roof and walls. Works perfectly here in Minneapolis.

    No vent required.

    All is dictated by climate....
  36. Glowcore made one of the first, and the very...

    Glowcore made one of the first, and the very first that also made domestic hot water with an indirect, (about 10 years before the Complete Heat) I installed one in 1987.
  37. Though air-to-air heat pumps can operate at lower...

    Though air-to-air heat pumps can operate at lower temps than ever, my Mitsubishi operates down to 2C, but when it gets real cold you will need something else. With wood as your primary I would use...
  38. Nonsense. Electric boilers are statistically very...

    Nonsense. Electric boilers are statistically very low maintenance. Particularly when sized and installed properly. The only advantage that electric baseboard has over any other space heating...
  39. I would not drive this boiler across the street....

    I would not drive this boiler across the street. It is toast and unsafe regardless of the creative heat recovery in the hearth.

    The subject is mute since, as HVAC states; "landlord".
  40. This boiler is beyond its serviceable life and...

    This boiler is beyond its serviceable life and must be replaced in any case. Ask the landlord when it will be done and contact city housing authority to make sure a permit is pulled before they start.
  41. When doing the factory start-up on NTI boiler, or...

    When doing the factory start-up on NTI boiler, or any boiler for that matter, the qualified technician should record the static gas pressure and the manifold pressure before and during ignition to...
  42. Replies
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    Great link, but none of these ModCons qualify, as...

    Great link, but none of these ModCons qualify, as their minimum fire rate far exceeds the design heat load of this modest abode.

    I was thinking Polaris, Vertex and the like.
    ...
  43. Let's not confuse efficiency with cost of...

    Let's not confuse efficiency with cost of operation or comfort.

    Electricity is sometimes the best solution for space heating since the cost of fuel differs from region to region and country to...
  44. Replies
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    882

    Radiant heat is the most efficient, most...

    Radiant heat is the most efficient, most comfortable and the least intrusive of any appropriate heat source for this small space, since existing floors are heated from below with extruded aluminum...
  45. Replies
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    The mechanic is inept. Pump inverted, pipe size...

    The mechanic is inept. Pump inverted, pipe size too small, air eliminator likely on the wrong side of the pump. We always read, understand and follow the manufactures' installation manual. This...
  46. Replies
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    We designed a radiant floor retrofit for a client...

    We designed a radiant floor retrofit for a client in San Francisco last year. She uses a DHW heater to radiant the floors and bath water. There is a sub-system to separate DHW from space heating....
  47. First, it is the installer, not the brand, that...

    First, it is the installer, not the brand, that you want to start with. The fact that your installer agreed to install the QuietSide in the first place speaks volumes and is reflected in his current...
  48. Replies
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    No, I'm getting batty from the long hours. Going...

    No, I'm getting batty from the long hours. Going to sleep now, never mind me...
  49. We design hydronic systems all over N.America...

    We design hydronic systems all over N.America including Alaska. A good installer with service, a Nest ,a neighbor and you are all set.
  50. Replies
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    To make things worse, my European customers call...

    To make things worse, my European customers call water heater "boilers".
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