2 stage furnace.

[usskaufman3]

Do you setup 2 stage furnace with single stage stat and let the board control 2nd stage. Or install 2 stage stat and let stat control when to turn on second stage. Just wanted to see which way other Techs would setup new installs.

[coolwhip]

If you set it up with a single stage stat, then it will not function as a true 2 stage furnace....it will simply work off a timer.

[usskaufman3]

True. But wouldnt it be more for comfort

[ga-hvac-tech]

Both ways... Yeah, that is confusing.

I sell more VS drive furnaces than PSC... depends on the customer and what they buy.

If I am replacing a system with basic equipment and I sell them up to a VS furnace and media filter (most sales); then I use a single stage stat and set the furnace for either 5 or 10 min delay to high. Many installs the furnace does not go into high many times the whole heating season (note I am in a warmer climate).

When the customer buys a nicer system... all of the above plus 2 stage AC... then I generally sell them a high end stat... like the HoneyWell Prestige IAQ YTHX9421R5069 or 5077. Customers seem to like the systems I install... they keep referring me to their friends.

[54regcab]

A 2 stage thermostat should be part of the quote for a 2 stage system if the customer doesn't already have one.

[BaldLoonie]

stat, always.

[danielworkerbee]

Our company does the two stage furnace with the single stage stat all the time and set the furnace for the 5 min delay.
We had alot of complaints with 2 stage t-stat, because the furnace would run on low tooooo long ( mental hurdal for the client ).
It's already bad enought with the older clients " the air isn't hot - turn it up ".
luck dan

[usskaufman3]

we sell 2 stage furnace with single stat. Furnace runs on 1st stage for 15 - 20 minutes then goes into 2nd stage. The Control Board is operating system. Which way is better for the customer? I would think running longer on 1st stage would make the house feel warmer throughout.

[martyinlincoln]

We do both. Depends on if the customer wants to spend a little extra or bare bones minimum.

[smoke]

How often does a customer buy a 2 stage furnace without a 2 stage air conditioner? Why would you force a furnace to run for 5-10 or even 20 minutes before kicking in to second stage when the customer just turned the thermostat up 6 degrees?
Why not sell the customer full functionality?


~smoke~

[nismo1]

Depends on stat wire, our Tstats are single or 2 stage so if the wires are there then stat if not then board. On high end we pull new wire. Case by case

[rglasgow]

My criteria is whatever the boss ordered.

[smoke]

nismo1, check out the Honeywell wireless stats. You can get them in a Focus Pro style up to the Prestige line. 2wire or no wire applications

~smoke~