A January cold snap in Portland is unforgiving — we had a call last winter from a homeowner in Sellwood whose fifteen-year-old furnace finally gave out on a Sunday night when it was 28 degrees. They'd been limping it along with repairs for two seasons. We were there by 8 the next morning, and by dinner they had heat. That's the scenario we've built the business around: real response when the weather turns serious, from a crew that has been doing this since 2008.
Undersizing means the furnace runs constantly and still can't keep up on the coldest nights. Oversizing means short-cycling — the unit blasts up to temperature, shuts off, drops, then fires again — which wears equipment faster and leaves rooms with uneven warmth. Neither failure is obvious until you're living with it through a full winter.
Every furnace installation in Portland we do starts with a Manual J load calculation: insulation values, window area, ceiling heights, duct condition, and orientation of the house. Northeast Portland bungalows with original single-pane windows load differently than a 2010s build in Hillsboro with spray foam in the walls. We measure both before we recommend anything.
Our primary focus is high-efficiency gas furnaces — two-stage and modulating models that dial output to match what the house needs instead of hammering at full capacity every cycle. Two-stage equipment fits most Portland-area homes well: steady temperatures, quieter operation, and lower gas bills compared to single-stage units running at 100% until they satisfy the thermostat and shut off hard.
For homes on propane, or older properties considering an oil-to-gas conversion, we handle those installs as well. Our team is NATE-certified, licensed, bonded, and insured in Oregon — we source through established wholesale channels and pull every mechanical permit required by Portland, Milwaukie, Happy Valley, and surrounding jurisdictions.
A straight replacement in an accessible utility space typically runs one full day. We start by decommissioning and removing the old unit — safely, with attention to the flue, gas line, and any existing asbestos tape on older connections (we flag it rather than disturb it). Before the new furnace goes in, we inspect the existing ductwork, gas supply pressure, and electrical circuit to make sure the new unit has what it needs to run correctly.
After installation: pressure test on the gas line, commissioning per manufacturer spec, and a full safety-circuit check — pressure switches, limit switches, flame sensor, rollout switch. We don't call it done until every lockout is verified. Then a technician walks through operation with you: thermostat settings, filter schedule, what startup sounds are normal and which ones aren't. No midnight surprises.
Oregon requires a mechanical permit for furnace replacements, and Portland, Clackamas County, and Washington County each have their own inspection processes. We pull permits and schedule inspections as part of the job — you don't have to track down the right form or figure out which inspector covers your address. This matters more than people realize: permitted work appears in city records, keeps insurance coverage intact, and comes up in disclosure paperwork when you sell the home.
All work is completed to current Oregon Residential Specialty Code. If an inspector requests a change, we handle it.
We give you a detailed written quote before we schedule the work. That number includes labor, equipment, and permit fees — we don't add charges for evening or weekend appointments, and we don't discover additional costs after the job is underway without showing you the reason in writing. If the install genuinely requires a duct repair or a new flue liner to meet code, we'll document which code section applies and why — not just tell you it's necessary.
We look at how the new unit pairs with your existing thermostat, air handler, and — if relevant — your central cooling. A mismatched combination can offset efficiency gains or create commissioning headaches. If you're considering cooling as well, our team handles air conditioning in Portland, and a matched system install often qualifies for utility rebates that single-component installs miss.
For homes needing a broader look at filtration, zoning, or ventilation, our full range of HVAC services in Portland covers those assessments in the same visit — so you're not making piecemeal decisions over multiple appointments.
We don't default to replacement. A cracked heat exchanger is a safety issue — that's a real replacement call. But an igniter or control board on a unit under ten years old is usually worth repairing. The math depends on age, efficiency rating, and repair cost relative to the remaining useful life of the equipment.
If you've already had us look at the unit for furnace repair in Portland and replacement is the better path, we credit your diagnostic fee toward the installation quote. We'd rather you have the right system than sell you one you didn't need.
Our three locations — Portland, Milwaukie, and Happy Valley — let us reach the full metro without the drive-time that inflates some competitors' rates. We regularly install furnaces in Portland, Beaverton, Hillsboro, Tigard, Tualatin, Lake Oswego, Gresham, Oregon City, Clackamas, and the communities around them. Same-day availability exists for genuine emergencies — if you've lost heat and can't wait a week, call us.
How long does the job take? Most replacements wrap in a single day. If the home previously ran electric baseboard heat and needs a new gas line or full duct system, plan for two days.
Do I need to stay home? We ask for an adult at the start and end of the job. Our crew works independently through the middle of the day, but we need someone available to review the finished system before we leave.
How is the right size determined? Manual J load calculation — always. Square-footage rules of thumb don't account for insulation quality, window area, or the direction your home faces. Correct sizing on a Portland furnace installation is the single biggest factor in long-term efficiency. We run the calculation before quoting any equipment.
Do you work on light commercial buildings? Yes. We install and service heating systems in small offices, retail spaces, and multi-unit residential properties throughout the metro. The same transparent pricing and permit-pull process applies, and we schedule around business hours to keep disruption minimal. See our full Portland furnace services for details.