Comfort Connection Heating & Cooling replaces gas furnaces in Gresham homes from its shop at 840 NE Cleveland Ave. This guide explains what a furnace replacement costs here, what moves the price up or down, and how to read a quote. The ranges below come from Comfort Connection’s own Gresham installations over the past 12 months, not from a national average. The real number for your house comes from a home visit.
Since 1998
Family owned in Gresham
CCB #209520
Licensed Oregon contractor
A+
Better Business Bureau
4.9 stars
Google rating
The short answer
A furnace replacement in Gresham, installed, starts at $4,500. Treat that as a starting point, not a quote. Furnace size, efficiency, venting and ductwork condition all change the number. Comfort Connection prices each job after a technician measures the home, inspects the ducts and checks the vent path. A quote over the phone is a guess, and a guess is how homeowners end up with a furnace that is the wrong size.
What sets the price of a new furnace in Gresham
Gas furnace replacement in Gresham starts at $4,500 installed. Estimates are free, with no obligation.
Furnace size
Furnace output is rated in BTUs per hour. A 1,400 square foot ranch in Centennial with upgraded attic insulation needs less heat than a 2,400 square foot two-story in Pleasant Valley with original windows. A Manual J load calculation sizes a furnace based on square footage, insulation, window area, air leakage and local design temperature. A bigger furnace costs more, and an oversized furnace short-cycles and wears out early. Size is the first number on the quote and it should be justified by a calculation, not by what was there before.
80% AFUE or 95%+ AFUE
AFUE is the share of fuel that becomes heat in the house. An 80% AFUE furnace vents hot exhaust through a metal flue. A 95% or higher AFUE furnace pulls more heat from the exhaust, vents through PVC pipe and drains condensate. The high-efficiency unit costs more to buy and more to install, and it uses less gas every month on an NW Natural bill. On a Gresham home that runs the furnace hard from October through March, the fuel savings are real. Whether they pay back the price difference depends on how long you plan to stay in the house.
Single-stage, two-stage or variable speed
A single-stage furnace is either on at full output or off. A two-stage furnace runs at a lower output most of the time and steps up on the coldest days. A variable-speed (modulating) furnace adjusts output in small increments and pairs with a variable-speed blower. Each step up costs more and delivers steadier temperatures, quieter operation and better humidity control. Two-stage is the common middle choice in Gresham homes.
Venting changes for high-efficiency furnaces
This is the line item that surprises people. Many Gresham homes built in the 1970s through 1990s have an 80% furnace sharing a metal flue with a gas water heater. Switching to a 95%+ furnace means running new PVC intake and exhaust through a side wall or the roof. The water heater is then left alone on a flue that is now too large for it, which can cause condensation and backdrafting, so the flue often needs a liner. Comfort Connection checks this during the home visit and prices it up front.
Ductwork repairs
A new furnace attached to leaky, crushed or undersized ducts does not deliver its rated performance. Crawlspace ducts in older Gresham homes are often disconnected at a joint or sagging between supports. Comfort Connection inspects accessible ductwork before quoting and lists any sealing or repair as a separate line, so you can see what the furnace costs and what the ducts cost.
Permit fee
Furnace replacement in Gresham requires a mechanical permit from the City of Gresham Building Division.
Removal and disposal
The old furnace has to come out and be hauled off.
Furnace replacement cost by furnace type
Furnace replacement starts at $4,500 installed. Each quote includes equipment, labor and standard venting. Ductwork repairs and flue liners are extra when required. The table shows which furnace type fits which home.
| Furnace type | Who it fits |
|---|---|
| 80% AFUE, single-stage | Smaller homes, existing metal flue, tighter budget |
| 80% AFUE, two-stage | Homes keeping a shared flue that want quieter, steadier heat |
| 95%+ AFUE, single-stage | Homes with a workable side-wall vent path, long-term owners |
| 95%+ AFUE, two-stage | The most common high-efficiency choice in Gresham |
| 96% to 98% AFUE, variable speed | Two-story homes, zoned systems, homeowners who want the quietest option |
Comfort Connection installs American Standard and Bryant gas furnaces. Brand changes the price less than efficiency and staging do.
Want a real number for your home?
Phones answered 24 hours a day, 7 days a week. A live person books the next available visit.
Monthly payment examples with financing
Comfort Connection offers financing through Wells Fargo. Approval is subject to credit. Details are on the financing page.
Why Gresham furnace costs differ from national averages
National cost articles are written for an average house that does not exist in East County. Three local facts move the number here.
| What moves the price | Why it matters |
|---|---|
| Housing stock | Much of Gresham was built between 1970 and 1995. Those homes have furnaces in tight hall closets, garages and crawlspaces, often with the original ductwork. Closet installs limit the furnace cabinet size and complicate venting. Crawlspace work takes longer. Both add labor. |
| Heat load | The Columbia River Gorge funnels east winds through Gresham, Troutdale and Fairview every winter. Wind pushes cold air through gaps in older homes and raises the heating load. A house near the Gorge mouth in Troutdale may need a larger furnace than the same floor plan in Happy Valley. Larger furnace, higher price. The January 2024 ice storm also pushed many homeowners toward furnaces with sealed combustion and reliable ignition, which tend to sit in the higher efficiency tiers. |
| Shared flues | As covered above, the metal flue shared with a water heater is common in Gresham and often needs a liner when the furnace goes to high efficiency. National averages rarely include that line. |
The net effect: a simple 80% swap in a Gresham garage can come in below national figures. A 95%+ conversion in a 1978 closet install with a shared flue and crawlspace ducts will come in above them.
How to compare furnace quotes
Get two or three quotes and compare them line by line, not by the bottom number.
| What to check | Why it matters |
|---|---|
| Load calculation | Ask each contractor how they sized the furnace. “Same as the old one” is not an answer. |
| Warranty terms | Ask how long the parts warranty lasts and what it requires. Comfort Connection furnace installations carry a 10-year parts warranty. |
| Who registers the warranty | Many manufacturer warranties drop to a shorter term if the unit is not registered within a set window after install. Ask who files the registration. The brands Comfort Connection installs require registration within 60 days of installation to keep the 10-year parts warranty. |
| What is excluded | Venting, duct repairs, thermostat, condensate pump, disposal. If any are missing from a low quote, they will show up on the final bill. |
Comfort Connection Heating & Cooling has been family owned in Gresham since 1998, holds Oregon CCB #209520, carries an A+ BBB rating and a 4.9-star Google rating across more than 170 reviews.
Repair or replace?
If your furnace is under 10 years old and the problem is a single failed part, repair is usually the right call. If it is past 15 years, has a cracked heat exchanger, or needs its second major repair in two winters, replacement starts to make sense. Our guide to repairing or replacing a furnace in Gresham walks through the decision.
Frequently asked questions about furnace replacement cost in Gresham
How much does a new furnace cost in Gresham?
Furnace replacement at Comfort Connection starts at $4,500 installed. The spread above that comes from furnace size, efficiency, staging and how much venting and duct work the house needs. A technician visit pins the number down.
Is a 95% furnace worth the extra cost over an 80% furnace?
It depends on how long you will own the home and what the venting costs. On a Gresham home heated October through March, a 95%+ furnace cuts gas use noticeably. If the house needs a new flue liner for the water heater, the payback stretches. Comfort Connection quotes both options so you can compare the up-front difference against the expected savings.
How long does a furnace replacement take?
A standard swap in a garage or closet takes one working day. Jobs with new venting, duct repairs or a flue liner can take longer.
Can I finance a new furnace?
Yes. Comfort Connection offers financing through Wells Fargo, subject to credit approval. Terms and an application link are on the financing page.
Call Comfort Connection Heating & Cooling
Ready for a real number instead of a range? Comfort Connection Heating & Cooling will send a technician to measure your home, inspect the ducts and vent path, and write a quote with every line shown. Call 503-761-8888 or schedule online. Phones are answered 24 hours a day, 7 days a week.
