HVAC System after house fire?
Sandra
last year
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klem1
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HVAC system in a new house - quote and system feedback
Comments (6)clockwork you will always get more comfort and control from multiple systems over a single system with zoning controls. however, a zoned system like you have listed is certainly a viable second choice and not overkill. dealer must do his load calcs for equipment and Man D for ductwork sizing/design. Ductwork should be insulated probably R8. I would want metal trunk lines for both supply and return. what did dealer propose? I think your biggest challenge is verifying your dealer's experience/expertise with a sgl system using zoning controls. I recommend going to visit a newly constructed home similar to yours where zoning controls were used and discuss with homeowner. Zoning is not for the inexperienced. how much is this system? IMO Good Luck!...See Morecarrier hvac or trane hvac
Comments (5)Jt Some questions please. What is your location? What size home living area? What size furnace and eff are you replacing? What size AC are you replacing? I would like to know the exact mdl number evap coil for each quote. What thermostat is proposed for the Carrier quote? That is a big difference between the 96% eff Carrier furnace and the 80% eff Trane furnace-both 60 K input. That would be about 56 KBTUs output on the Carrier and about 48 KBTUs on the Trane. Not insignificant. I don't care for some shortcuts that homeowners make particularly on reusing linesets and using existing thermostats that shortchange a nice furnace's operational capability. Post back with the info requested. IMO...See MoreAdvice Pls on new HVAC system
Comments (5)Tigerdunes (and others)...thanks very much for all the info/advice on my and the hundreds of other threads I have been reading. Hope you have a few more minutes of final/add'l guidance. 1. 6200 Kwh at 12 cents, 1100 therms at 70 cents are my usage/costs for cooling/heating after all other usage/related costs are subtracted. A couple NATE certified HVAC guys have come up with $1.07 to $1.12 per therm with HP/Hybrid system...depending on size, HSPF, AFUE. So 'data' seem to indicate NO to HP/Dual with long term outlook of plentiful NG and rising Kwh...fossil fuel. Perhaps Hybrid/80% in basement for next year!? 2. Old Not working: furnace: 100k trane ,whirlpool 3 1/2T The Bryant guy is saying 5 ton coil is a must with 4 ton A/C, 100K CAV355 furnace!? Any thoughts. 3. Bryant guy says he has called AHRI and Bryant w/o success to find Evolution 80K btu CAV355 matched w/proper coil and 187BNA 4 ton A/C for fed tx credit. Can you provide some options/insight? 4. One big system for basement 1900sft, main 2180sft, 2ndflr 520sft w/zoning would entail new ductwork, zones at a cost that appears prohibitive vs cost of sep.sys for basement (50% below grade...concrete walls). i.e. quote of $1000 for zoning upstairs only from Bryant, $1900 from Trane). More zones, more controls...more things that can go wrong!?? And of course that can go right. 5. Upstairs...because of $1000 cost for modulating system dampers, I'm thinking MANUAL damper for the one supply run going to 2nd Flr...as only 'mom' is there in the winter...heat rises...can do later for $1300 if I need to. Your thoughts please. Thanks again!...See MoreIs my HVAC high limit switch working or not? Two HVAC pros said it is.
Comments (25)WHAT IS A HIGH LIMIT SWITCH? https://www.newcentralairconditioner.com/ The high limit switch in your gas furnace is a small part with two very important jobs. This switch plays a role in the normal operation of your furnace. Turning the fan motor on and off is the high limit switch’s main job. This is the role it plays in every cycle of your furnace’s normal operation. But that’s not the only thing that the high limit switch does. It’s also safety device that helps prevent your furnace from overheating. The high limit switch consists of a long temperature-sensing probe attached to a metal mounting plate. From the mounting plate, the switch is wired to the blower fan motor and to the gas valve. The switch is generally located just past the heat exchanger. This is so that it can detect the temperature of the supply air. In other words, the air that’s about to be blown into your home....See MoreSandra
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