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hybrid system choices?

flange
flange Member Posts: 153
in THE MAIN WALL
I am currently planning a replacement of a total system. this system is currently utilizing an old weil mclein oil fired boiler which also makes domestic hot water via a coil not an indirect. the hvac is accomplished using carrier air handlers with dx coils for ac and hot water coils for heating. in addition, there are two humidifiers and two honeywell air cleaners. my first option is to use an ultra oil boiler, new hydro air air handlers and an indirect water heater, with all new controls including outdoor reset. second choice is to use an ultra with LP and same setup otherwise. third option is to get rid of the boiler, use high efficiency LP furnaces and an electric hot water heater. this job is located in NE pa. looking for pros and cons. I do mostly commercial/industrial so i am looking for input from the guys who do resi every day.

Comments

  • Alex Giacomuzzi
    Alex Giacomuzzi Member Posts: 81
    Replacing in Kind........

    Replacing what you have in kind should work just fine.
    It sounds like you have 2 Carrier air handlers. I would suggest your replacements have the variable speed DC fan motor capability (ECM Technology). Several air handler mfgs have these including Carrier which has a some nice units. The boiler and fuel of choice is yours to make --- service being a big element to consider here.

    The A/C & DX would be integrated into the air handlers (you would probably have to add the hot water coils separately depending on which mfg. you choose, or maybe clean and reuse what you have (coils that is).

    Regarding comfort ----- with variable speed air handlers you can run them continuously at a reduced fan speed to keep the air in your house moving and minimize the on /off drawback of forced hot air. This should make a difference.

    Are you at all interested in putting in any radiant or hot water panels or other?? The boiler option gives that opportunity if you need it.

    Utilizing an indirect DHW will be an improvement over your present configuration. There are numerous suggestions on brands to select from on the wall.

    Good Luck....... Alex
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