U R G E N T question: HVAC register--what to do??
Buehl
15 years ago
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pbrisjar
15 years agobusybme
15 years agoRelated Discussions
HVAC question
Comments (8)this is very general info...fwiw.. new install (mid-range brand..not top tier, not builder's model..mid range) should run you about 7,000 to 8,000. 90+ gas furnace 14 SEER a/c.(based in prices in my area) Ductwork will depend on type of ducts..flex vs hard pipe. Flex should be about $200 per run, plus costs of supply and return plenums. hard pipe ducts are more costly. both should be insulated to a minimum of R-6, although R-8 upgrade cost is well worth it. as for install, all should be mastic sealed, no duct tape, or foil tape although a foil/mastic tape is approved. reducing duct and return air leakage is your best savings and worth the shopping and education to do correctly. materials are not expensive, and will last for decades when properly done. tonnage will be all over the place when you start getting bids, as will equipment choices. rules of thumb..here bubba a/c uses 400 sq ft per ton for houses on piers 500 sq ft per ton for houses on slabs. (south La.) my way of thinking is to fix the house..seal it air tight, increase thermal barriers (insulation). when house has less air leakage (infiltration)it will require less tons of a/c. best of 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 Moredeciding to do energy star program, or just hvac
Comments (65)You should post your question in the fireplace forum to get lots of opinions. There is such a forum on gardenweb. My neighbor had some sort of deluxe fireplace installed. Not sure if it was an upgrade or if he never had one. He goes through mountains of wood but says it heats his whole house. He has a family room with a cathedral ceiling that has an opening to the second floor hallway and since heat rises...I think he said he used 5 cords of wood. I'm not sure, but I do recall thinking it was a lot of wood and it wasn't free (maybe one batch was free). I don't know how healthy that is to heat your house all the time with wood. Maybe it has doors and a filter...I don't know. He just got his gas bill and it was $50. Mine was $115, but I did have my mother-in-law here for a week with her "thin" FL blood so we had to keep the heat at 70-72 rather than 66-68. Neighbor and I both have tankless water heater. You might consider wood as a cheaper back up option and also ask on the other forum about a unit that can use gas and/or wood. That's what I would do if I had the $. On another note...MY gas usage on the current bill was higher than last year. Last year we used 65 ccf for a 28 day bill period with avg temp on bill listed as 49.6 This year we used 82 Ccf on a 33 day cycle with a temp of 45.5. The longer bill cycle, lower temp and mother-in-law makes it hard for me to see if my 97% heater,air sealing and tankless SAVED me anything over my old 91% furnace without air seal and my 57% water heater. I have to wait for a bill cycle that more closely matches the temp etc to tell if it helped or not....See MorePlease Review/Advise with HVAC Quotes in SoCal, CA
Comments (4)Hello tigerdunes, Thank you for your help in identifying the differences between the 2 bids. I would've never known about the refrigerant lines based from my lack of knowledge of this stuff. Yes, these systems are identical. I had intended this so that I can compare "apples to apples". Carrier did provide the AHRI number, but it's not shown on the proposal. Should I insist that the specifics be added to contract before signing? Carrier dealer plan to use Pro thermostat model# T805, how does this thermostat compare to the Carrier Edge thermostat? I did find it curious that neither Bryant nor Carrier included a Bryant/Carrier brand thermostat. The furnace and ductwork is located in the attic space. I did have a conversation with Bryant dealer a while back inquiring R8 and his response was that most houses in my climate zone uses R6 (the impression I got was that R8 would be more than what I'd need), but that he could give me a quote if I really wanted the upgrade (said it's not that much more in cost). So as far as the option of getting all new R6 ductwork to replace the existing R4, I was leaning towards passing on it factoring that both heating and cooling is scarcely used in this house. The winters are pretty mild here (this past winter the heating was only turned on twice for several hours at dawn. During the summers, the A/C gets turned on no more than a total of 10 times for several hours in the late afternoons of the hottest days. I figured if the existing ducts are in good condition, I saw no cost-benefit to upgrade to new ductwork. What do you think? Am I wrong in my rationality? Yes, there is only one return, located in the hallway. I measured the grille to be about 15"x30", actual open area is closer to 13"x28.5". We are thinking enlarging the existing to 20"x30". Will this be large enough for 1200 CFMs? Thank you again for your help!...See Moresue36
15 years agowa8b
15 years agowa8b
15 years agotrixieinthegarden
15 years agoBuehl
15 years agoplllog
15 years agosailormann
15 years agosue36
15 years agopcjs
15 years agoci_lantro
15 years agoci_lantro
15 years agoBuehl
15 years agotrixieinthegarden
15 years agoci_lantro
15 years ago
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