Hi everyone I just reread my post from when I had a Manual J calculation done. There was some terrific info there. Here is the [url=https://www.doityourself.com/forum/gas-oil-home-heating-furnaces/626962-when-consider-replacing-furnace-ac.html]LINK[/url] [b]Background[/b]: [list] [*]Moved here about 5 years ago: Split level home, relatively tight, built in the 1960s, in north NJ [*]Current Furnace/AC Condenser dates to 2005 [list] [*]Lifespan, as I understand it, is 15 years at high end (translation: could last another 15, could die tonight) [*][color=#222222]Lennox G60UHV, 80k BTU furnace[/color] [*][color=#222222]Lennox model HSXB15 condenser, 3 ton[/color] [/list] [*]Some family members have developed significant allergies since moving in to this home, but HVAC salesperson said its unlikely that new system would change that (he wasn't sure that my hypothesis would be correct, that dust in the basement is being drawn in to ducting) [*]Upstairs tends to be 5-8 degrees warmer in summer than main living area [/list] So, today I had vendor #1 in to provide a proposal to replace my HVAC system. [b]His proposal[/b]: [list] [*]Bryant Legacy 3 ton 16 SEER condenser and matching evaporator [*]Bryant Preferred 96% AFUE ECM Condensing Gas Furnace 2 stage variable speed furnace [/list] At my request, He ALSO suggested considering a ‘ducted, ductless’ new system on my second floor. It would provide AC in summer for this living area, and it would also be a heatpump, so we wouldn’t have to heat the whole house while sleeping during much of the heating season--at a minimum, on the shoulder seasons. It would have a better chance at ameliorating allergy issues as it would be new ducting on that level. With budget as no obstacle, I would consider doing both. But this is real life, and cost IS important :) So, my questions to the experts here: [list=1] [*]Should I stick to the plan, and[b] pro-actively replace the current HVAC system[/b]? [list] [*]Other than requiring annual flame sensor cleaning (we discovered that last year-- those sensors get DIRTY. [i]Wonder if the allergen issue is related[/i]?) [/list] [*]Should I consider 'if it aint broke, dont fix it' approach and focus on the option that has the highest likelihood of improving comfort in the home? ie: [b]Do the ducted/ductless unit[/b]. It has the best chance of reducing allergens that we suspect are being drawn into the existing system, as we would use ductless for the bulk of our cooling and possibly much of our heating needs [list] [*]Proposed unit: Carrier 18000 BTUH Heatpump Condenser [/list] [*]Is Bryant a good name for HVAC equipment? We are already at nosebleed pricing level. Not sure if I should request Carrier brand proposal....? [/list] Thanks in advance for any and all advice! --K

I have a goodman furnace GMS80805CN serial # 1209553880. The gas was not being turned on after the ignitor would glow so I checked the voltagae at the two wire going to the gas valve & there is no voltage. So I thought the control board was bad but today I got a replacement board and it does the same thing. It must be something else. Any help would be appreciated.