I currently have a Janitrol analog thermostat. It has 7 wires hooked up.

Terminal - Color
Y - Yellow
Com - Blue
R - Red
G - Green
w2 - Looks white
E/w3 - Looks pink
O - Orange
B - Nothing

I'm trying to replace it with the Honeywell RTH230B with terminals as follows:

Rh
> Jumpered
Rc
W
Y
G

Can I install the Honeywell or do I have to go buy a 7 wire thermostat? If I can install it, what wire goes where?

I have an AC/Heat Pump combination unit outside, and a Natural Gas furnace inside (strange, I know, but it's cool to have a backup).

Anybody have the answer? Thanks in advance!

:)

The new thermostat is not a heat pump thermostat. You will have to return and get proper stat

You need a dual fuel heat-pump thermostat.

What you need is a heat pump thermostat with either two or three stage heat, the reason for a two stage thermostat is if you have an outdoor thermostat bringing on the second stage of a two stage electric heater (aux. heater) with a connection at the thermostat of wires W2 and W3 at the W2 terminal, with the W3 wire going thru a outdoor thermostat and then to the second stage aux. heat . The dual fuel control package will switch the system from heat pump to natural gas furnace thru an outdoor thermostat when the temperature drops to a predetermined setpoint (around 32 degrees) The three stage thermostat would be used when no out door thermostat is used between second and third stage aux. heat.
You would actually have four stages of heat, 1-heat pump, 2-first stage electric heat, 3-second electric heat, 4-gas furnace.
If you have no aux. heat you would could use a two stage heat pump thermostat because the heat pump will drop out when the gas furnace kicks in via the control panel. Good luck, Mike