Page 1 of 2 12 LastLast
Results 1 to 13 of 25
  1. #1
    Join Date
    Nov 2005
    Location
    Ga
    Posts
    28

    Tell me what I need

    You guys have helped me in the past, thanks. I am a licensed plumber and electrician by trade.At the end of last summer my Lennox HS 14 went out and my Lennox Pulse(propane) furnace is on its last leg( I know about the heat exchangers).

    Its now time to replace everything. I have good Lennox and Trane dealers nearby that I sometimes work with on jobs. I am just starting my search for equipment. The house is in Ga.(high humidity) and is a 2400sq ft.ranch with a basement(very well insulated,2x6 exterior walls,basement is nearly all underground with insulation on the outside of poured walls and under slab, 1" foam outside of that and 16inches insulation in the attic). The Pulse was a 60,000btu and the HS14 was a 2-1/2 ton on high. The duct work is all metal, with supplys and returns in each bedroom and a large one in the living room.4 bedroom house with a dining room up stairs and one room and a bath in the basement conditioned.

    I want to get the most efficient replacement system with a Hepa type filter system. I need your suggestions on system type>split,dual fuel,heat pump etc. The electric rate is reasonable and I have propane which is high at this time. 200gal this year was $500.00. It was a warm winter and I did not use the whole tank this year but usually I used 1-1/2 tanks(300gallons) a year propane with the old Pulse(96% efficient I think). I have all types of water heaters installed(electric,instant,&propane tank) and can change to any one of those with some valves. I might be interested in heat recovery system if it would help the A/C equipment. I can provide any other information in a later post. Thank you for any insights, David

  2. #2
    Join Date
    Mar 2008
    Location
    Houston, Texas
    Posts
    352
    First things first. Why do you say your pulse furnace is on its last legs? The pulse furnaces are more difficult to work on, but Lennox had a lifetime warranty on some of them. I have had one case where the existing lennox pulse needed some parts, that lennox didn't carry anymore, so they supplied a new 90+ furnace and paid me to install it.

  3. #3
    Join Date
    Nov 2005
    Location
    Ga
    Posts
    28
    Well I haven't had the heat exchanger inspected for about 3 years, and the unit is 22 years old. I also think that their is a problem with the gas valve, because when it sits for a long while, there is a loud thump when it fires and comes on. Gas must be settling in the combustion chamber, then whomp when it ignites.This can't be good for the combustion chamber.It is a propane unit. If it is going on and off(when its cold outside) frequently it doesn't do this. I replaced the spark plug,ignitor,and the intake gasket last year. Replaced the board about 5 years ago. The fan is the original unit. I have become proficient at working on it, just from fooling around with it. It has been a good unit >22 years seems good to me. I wish they would send me a new one for free then I'd just add another condensing unit and be good to go. David

  4. #4
    Join Date
    Nov 2004
    Location
    SW FL
    Posts
    6,323

    Thumbs up Equipment selection: 1st Manual J

    Quote Originally Posted by echo8287 View Post
    You guys have helped me in the past, thanks. I am a licensed plumber and electrician by trade.

    I am just starting my search for equipment.

    The house is in Ga.(high humidity) and is a 2400 sq ft. ranch with a basement (very well insulated, 2x6 exterior walls, basement is nearly all underground with insulation on the outside of poured walls and under slab, 1" foam outside of that and 16 inches insulation in the attic).

    The Pulse was a 60,000btu and the HS14 was a 2-1/2 ton on high.

    The duct work is all metal, with supplys and returns in each bedroom and a large one in the living room. 4 bedroom house with a dining room up stairs and one room and a bath in the basement conditioned.

    I want to get the most efficient replacement system with a Hepa type filter system. I need your suggestions on system type>
    split, dual fuel, heat pump etc.

    The electric rate is reasonable and I have propane which is high at this time. 200gal this year was $500.00.

    I can provide any other information in a later post. Thank you for any insights, David
    16 SEER / 9.2 HSPF heat pump, 2-stage compressor
    Variable Speed air handler with 5" pleated filter rated at MERV 11.

    You may wish to consider zoning.

    Electric strip would likely be sufficient as a heater back-up for outdoor temperatures < the balance point ( generally 28' - 35'F)
    and running during defrost mode.

    Sizing of _ ton heat pump and __ kW electric strips
    obviously needs to be determined by performing ACCA Manual J
    calculation for your speciifc building envelope.

    Check existing ductwork based on new air flow
    and determine total TEL & ESP based on ACCA Manual D.
    Designer Dan
    It's Not Rocket Science, But It is SCIENCE with "Some Art". ___ ___ K EEP I T S IMPLE & S INCERE

    Define the Building Envelope and Perform a Detailed Load Calc: It's ALL About Windows and Make-up Air Requirements. Know Your Equipment Capabilities

  5. #5
    Join Date
    Aug 2006
    Location
    Marco Island, Fl
    Posts
    729
    The HS14 is a two speed unit that was only available in 3,4, or 5 tons.

    The 3 ton put out about 41,000 btu in high.
    The 4 ton put out about 51,000 btu in high.
    The 5 ton put out about 65,000 btu in high.

    These ratings varied with the indoor coil selection.

    Be careful of what you get prices on.

  6. #6
    Join Date
    Nov 2005
    Location
    Ga
    Posts
    28
    I guess the HS 14 was a 3 ton unit as I remember it was the smallest of that model. It has worked fine, although it was the second one I had installed as lightening hit the first one. The last one is about 9 years old.
    Dan the ductwork is all metal,the supply coming off the top of the Pulse is 21x21 goes up hits a vaned T and goes both ways from the center in the basement.The return has a 24x20 plenum box on the side bottom of the Pulse and then transitions to 2- 14x10 returns that travel both directions from the center of the basement. All the bedrooms,hall,dining room,living room have a supply and return. Air flow is quite, Pulse is NOT.
    I've never had a heat pump before, so are they a lot better than they used to be? It really doesn't get too cold for too long where I'm at in Ga, so a heat pump might be good. What about dual fuel, how does the cost of the units compare with a high efficiency HP? Are there any advantages or disadvantages to dual fuel. I only have the Pulse and a propane water heater on the gas at this time, everything else is electric. I went by the Trane dealer today and I will call him tomorrow, he also sells Amana and another brand. Thanks for the replies,David

  7. #7
    Join Date
    Mar 2005
    Location
    Suppy NC
    Posts
    4,513
    i agrre with dan on the heat pump
    i also to add to this would recomend a heat pump and keep the pulse
    have it serviced and a tune up kit to replace all the old ignition parts.

    as long as it passes the presure test and with the tune up kit you will have a cleaner ignition and the unit will in most cases run quiter. Wit the heat pump you will only need the furnace on the colder days and for defrost. Saving you on propane

  8. #8
    Join Date
    Jun 2007
    Location
    Central, FL
    Posts
    871

    Carrier Infinity/ Bryant Evo

    I would strongly recommend the Bryant Evolution system, its a amazing machine. Its top of the line when it comes to Dehumidifing. You can go with high eff fuel or heat pump, both come with the EVO. control version for maximum eff. They also offer the ten year parts and labor warranty,so its a win win
    WARNING:IF YOU DON'T KNOW THEN DON'T DO, SO THOSE WHO KNOW WHAT YOU DIDN'T KNOW DON'T END UP UNDOING WHAT YOU DID SO IT COULD GET DONE RIGHT!

  9. #9
    Join Date
    Nov 2005
    Location
    Ga
    Posts
    28
    ?
    Last edited by echo8287; 03-18-2008 at 03:16 AM. Reason: double post computer hung up

  10. #10
    Join Date
    Nov 2005
    Location
    Ga
    Posts
    28
    tin knocker, I have worked on the old Pulse many times myself and understand it fully. I changed all the ignition parts last year. They are kinda hard to get to,had to use a flexible mirror to see them. I was wondering if I could use the Pulse with a new heat pump unit. I would have to get one of my local Lennox dealers to test the heat exchanger again. I think it needs a new gas valve too, if you read my first post. I replaced the board about 5 years ago. Can I put an ECM fan motor in the Pulse??
    A/C Doc>I will look into the Bryant equipment. In Georgia the humidity is brutal in the summer. thats what I liked about the HS14 2 speed Lennox A/C unit running on low. That unit quit at the end of last summer and I didn't get it fixed yet. Thought it might be time for new equipment.

    A couple of questions about heat pumps in general??? Size wise is the outdoor unit that much bigger than say a large A/C unit? Which companies make better heat pumps? I've been reading posts for a couple of days and I see where some people don't like Trane HP and they like Lennox HP. Seems Carrier is better these days than it used to be. There is a big Rheem plant not to far away from me. I sometimes work with several Lennox, Trane,Rheem,Amana,American Standard dealers on jobs where I am the plumber or electrician. I'll have to look for a Bryant/Carrier dealer. The spot where the HP or A/C unit is on a patio on the east side of my house. If the unit is very large I'll have to change the area where it will sit> that could be a minus. After reading some tonight, looks like dual fuel with propane/HP isn't as cost efficient as HP with strips. Assuming low electricity rates(I think my rates are.08/ kw). Propane has got outrageous. Used to pay $250 for 200 gallons now $500 for same amount. I was going to get a 1000 gallon tank and tell the propane supplier to only fill when the price is low in the summer time. David

  11. #11
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    68,308
    Telling your supplier to only fill a 1000 gal tank in the summer when the price is low.
    Is like telling a kid in a candy store to only pick candy that is low in sugar.

    At 8 cents a KW, your elecyric is low enough that a HP with elec aux would be cheaper heat then you LP is.
    Contractor locator map

    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?

  12. #12
    Join Date
    Jun 2007
    Location
    Central, FL
    Posts
    871

    Thumbs up This may help!

    In that neck of the woods I would go heat pump, depending on your heat usage it may be the most eff. way to go. Trane is a good unit i have sold it in the past & still do when its special requested. However, 95&#37; of the time when I show the customerr a American Standard unit & Trane unit side by side they can't tell the diffrence till I quote the price . They are build by the same manuf. THE TRANE COMPANY. Lennox I'm sorry to say I just say NO! several bad experience, and just a very over priced unit. Bryant for me is my top seller and just have the highest customer over all satisfaction. They equipment has incredible advance technology which customers find very inpresive. The interface control on the evolution system is so simple, just tell it the temptaure and Relative humidity you want and sit back and relax. The thermostat Control is in constant communication with both AHU and Outdoor condenser. Here maybe this will explian it a little better also type in your zip code in the right hand box, it will give you a listing of authorized Bryant dealers in your area. GOOD LUCK

    http://www.bryant.com/products/achea...volution.shtml
    WARNING:IF YOU DON'T KNOW THEN DON'T DO, SO THOSE WHO KNOW WHAT YOU DIDN'T KNOW DON'T END UP UNDOING WHAT YOU DID SO IT COULD GET DONE RIGHT!

  13. #13
    Join Date
    Nov 2005
    Location
    Ga
    Posts
    28
    Beenthere, thanks for the reply. I am considering the heat pump. In the past when gas was cheaper, I would rather have gas. In these days with the improvement in heat pumps I'm thinking of going that way. I hope it ain't like diesel. I bought a diesel truck when when diesel was cheaper than regular. I had it about 6 months and then it went higher than regular. Today $4.00 a gallon>reg gas 3.29
    A/C Doc The local Trane(Amana and guy is coming tomorrow to have a look. I have known him for a good while,they do a good job and are a reputable dealer. I looked at the Bryant stuff last night after your comments. It looks like nice stuff. What equipment do you suggest I ask about in the Bryant line? I just did a search for the Bryant dealers in my area. Only one showed up and I would not use those guys at any cost, so I'd have to find one further away. Do any of yall know if I can put a ECM motor in the old Pulse? and make it varible speed. I could use it as a backup, and get a better HP as the outdoor unit. Thanks, David

Page 1 of 2 12 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event