Most furnaces in Northeast Wisconsin are oversized, because the fast way to size one is to look at the old unit and match it. We run the actual load calculation. A right-sized furnace runs longer, quieter cycles, holds a steadier temperature, and lasts longer than one that blasts and shuts off all winter.
What Is Included
- Manual J load calculation based on your house — square footage, insulation, windows, orientation, infiltration
- Honest efficiency comparison: what a higher AFUE actually saves you at Wisconsin gas rates, and when it does not pay back
- Proper venting, condensate handling, and combustion-air provisions for the equipment we install
- Ductwork and static-pressure check — a new furnace on undersized ducts is a new furnace that dies early
- Full startup: gas pressure set, temperature rise verified within spec, safeties tested
- Registration of the manufacturer warranty in your name
Single-Stage, Two-Stage, or Modulating
Single-stage is one speed: on or off. Two-stage runs on low most of the winter and only ramps up on the coldest days, which means quieter operation and fewer temperature swings. Modulating adjusts continuously and is the most comfortable, at the highest cost. Which one makes sense depends on your house and how long you plan to stay in it — we will lay out the honest tradeoff instead of steering you to the top of the line.
Worth Asking About: A Heat Pump Instead
If you are replacing a furnace and you also have or want air conditioning, it is worth twenty minutes to look at whether a heat pump paired with a backup furnace makes better sense. In a lot of Northeast Wisconsin homes it does, and there is rebate and tax-credit money attached to it that a straight furnace swap does not qualify for. We will run both numbers for you.
The Quote Is The Price
One number, written down, covering the equipment, the labor, the permit, and the disposal of the old unit. We do not discover new charges halfway through the install.
Service Area
We cover Green Bay, De Pere, Ashwaubenon, Howard, Suamico, Bellevue and Allouez, plus Brown County and eight surrounding counties across Northeast Wisconsin. See the full service area →
Why Sizing Matters More Than Brand
An oversized furnace satisfies the thermostat fast, shuts off, and lets the house drift — so you feel hot-cold-hot-cold all winter while the equipment wears itself out through constant starts. Installation quality and correct sizing drive far more of your real-world comfort and lifespan than the badge on the front of the cabinet does.
Frequently Asked Questions
How long does a furnace replacement take?
A straightforward like-for-like swap is usually a single day. Add time if venting has to change, if the ductwork needs modification, or if we are converting the system layout.
Do you pull permits?
Yes. Permitted and inspected where the municipality requires it — that protects your warranty and your home sale down the road.
What efficiency should I buy?
In this climate the jump from an old 80% unit to a 95%+ condensing furnace is usually worth it. Beyond that the returns flatten fast. We will show you the math for your house rather than quoting a generic payback period.
Can you finance it?
Ask us when we quote — we will tell you honestly what options exist and what they cost you, including whether paying outright is the better deal.
Prefer to talk? Call (920) 304-9377