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Question DetailsAsked on 7/15/2017

Hvac and damper installer

Looking for residential carrier or Lennox hvac installer with a two zone motorized damper, job located in queens ny

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2 Answers


Heating and A/C would be the Search the List category to find an HVAC technician for this - available to all Angies Members, both paid and free memberships.

Here are links to a couple of related similar questions which might be of interest:

Note the ballpark price in the first one is a replacement, not a damper from scratch - though not much different (maybe $150-250 more) if a flexible duct system as opposed to rigid sheet metal ducting, which would cost at least several hundred more typically to initially put in a new damper. Remember - with a damper, it needs to be calibrated to the thermostat controlling it - or sometimes a "smart controller - about $100-150 more - is used to control it. A "smart damper controller" is a neat electronic device which "learns what setting to use by measuring the time interval between the two zone thermostats turning off their call for heat or cooling - and adjusting the opening so the two zones reach the shutoff point at about the same point in time. Sort of neat electronics because they continuously learn as environmental conditions change - though granted for many houses just a manual damper with a "winter" and "summer" setting marked on it works well.

(Reason winter and summer settings are commonly different is the differences in the two zones conditions (usually the 2 zones are for 2 separate floors) heat rising in the house and differences in zone exposure to attic heat and solar heating - so commonly in summer the upstairs zone receives more of the airflow to gie it more cooling to overcome the greater heating in the top floor from more hot air and sun exposure and attic heat radiation to the top floor, while in winter the top floor typically receives more solar heating and also convective heating from the rising hot air from the first floor (especially if there is no door between the two floors) so the bottom floor usually is given more of the airflow. Ground floor also commonly loses more heat in winter, which needsmaking up, to kitchen ventilation heat loses and heat loss from exterior doors and tuck-under or attached garage doors being opened periodically.

Answered 3 years ago by LCD



Thank you for contacting Angie’s List.

I would be happy to assist you in finding Heating & AC providers in your area. Unfortunately, it doesn’t look like you have an account with us. You can sign up at or give us a call at 888.944.5478. Our call center hours are from 8 AM to 9 PM Monday through Friday, and 8 AM to 5 PM Saturdays.

Let us know if you need anything else.

Thanks again,

Chris G.

Angie’s List

Answered 3 years ago by Member Services

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