Set Point Temp

[mike350]

Is there is way to physicially set the set point on a heat pump - if you make it lower - will that cause the heat pump to work in lower temps (maybe 30-20 degrees) - a least that way the heat pump will work longer than the oil heat comming on??

Thank you for you expert help to someone who knows nothing about HVAC!!!

[mayguy]

What model/brand of t-stat do you have?

unless you got an older system that has dual fuel kit and an outdoor sensor.

[mike350]

Thanks for the reply -

I have a duel fuel system -York heat pump 3 ton 10 seer unit with an oil heat backup - it is an older system ( Westinghouse is the furnace maker if that tells you anything!!!) It does have a fossel fuel kit on the side of the furnace - I don't think it has an outdoor sensor - You cannot check the temp with the thermostat - the thermostat is a Honeywell T8611 series -

[markj]

Your heat pump should be locked out by outdoor temperature when the outdoor temperature reaches the economic balance point. The economic balance point is the outdoor temperature, which below the oil furnace operates more economically than the heat pump. The efficiency of the equipment and the cost of the energy are what determine this set point.
What is that temperature for your system? Thats what you need to calculate.

[mike350]

is there a way to physically set the temp - either on the heat pump itself or the thermostat??

[markj]

Yes, there should be. But by site rules thats all the info we can give you. No DIY. Education is free.

[mike350]

thanks for your help - I dont' want to get anybody in trouble-