Furnace Services

Proudly Serving Portland & The Surrounding Areas

Furnace Service in Hillsboro, OR

Repair, Installation & Maintenance from a Daikin Comfort Pro

When a Hillsboro furnace stops performing, the fix needs to happen fast. We handle furnace repair, installation and replacement, and maintenance for both residential and commercial customers throughout Hillsboro and the surrounding Washington County area, including Beaverton. Founder Kevin brings over 25 years of hands-on HVAC experience to every job, including large-scale operations at the Moda Center and Intel. That background informs how we approach every installation and service call.

O’Leary Air has served local families and businesses as a family-owned company since 2015. Pacific Northwest winters bring Hillsboro overnight lows into the mid-to-upper 30s regularly. A furnace that isn’t running efficiently isn’t just uncomfortable. It’s a cost you’re paying every month.

Ready to schedule furnace service in Hillsboro? We offer same-day and weekend appointments. Call us at (503) 743-0417 or use our online contact form to get started.

Furnace Repair, Installation & Maintenance in Hillsboro

We service all makes and models for repair, installation, and maintenance. Whether your furnace won’t start, runs short cycles, or is approaching the end of its service life, we can diagnose the issue and recommend the right path forward.

Furnace Repair

Repair calls cover the full range of common failures: no heat, unusual noises, ignition problems, and short cycling. We offer same-day and weekend appointments so a furnace issue doesn’t leave you waiting through a cold night.

Furnace Installation & Replacement

We install all makes and models, and as a certified Daikin Comfort Pro partner, we stock and install Daikin communicating gas furnaces in both 80% AFUE and 96–97% AFUE models. AFUE (Annual Fuel Utilization Efficiency) measures the percentage of fuel that converts to usable heat. A 96% AFUE furnace wastes only 4 cents of every dollar spent on fuel. Daikin furnaces include variable-speed motors for quieter operation and gradual ramp-up, and feature stainless steel tubular heat exchangers built for longevity.

Furnace Maintenance

Annual tune-ups help preserve manufacturer warranties, catch developing problems early, and support the efficiency a furnace was designed to deliver. We service all makes and models, and our HVAC maintenance plan members receive 10% off non-installation services.

The Daikin Comfort Pro Difference

Our Daikin Comfort Pro certification means we’re trained and authorized to install Daikin’s full furnace lineup. For homeowners who choose a new Daikin system, that translates to real post-installation protection: a 12-year parts warranty from Daikin, plus our No Risk Guarantee covering labor for up to 2 years. You won’t have additional covered repair costs beyond routine maintenance costs for at least two years after installation.

Daikin communicating systems, including pairings with the Daikin FIT side-discharge condensing unit and the Daikin ONE thermostat, allow each component to share performance data. That communication can improve efficiency, simplify diagnostics, and help the system run the way it was designed to. Most competitors offer parts-only coverage. Our Daikin installations don’t.

Why Hillsboro Homeowners Choose O’Leary Air

We hold 5-star ratings on Google, Yelp, and Facebook, an A+ rating with the BBB, and have been recognized as Community Voted Hillsboro Best for 2024, 2025, and 2026. We’re licensed in both Oregon and Washington and back every installation with a 100% satisfaction guarantee and a written commitment that your system is intended to perform as designed.

Proper installation is the most important event in a furnace’s life. We don’t cut corners on workmanship because a furnace installed correctly supports the efficiency and lifespan it was built for.

Discounts and financing:
We offer financing options for furnace repair and replacement. Customers 65 and older receive 5% off, up to $500. First responders and active or veteran military receive 5% off, up to $500. HVAC maintenance plan members receive 10% off non-installation services.

Schedule Furnace Service in Hillsboro Today

Same-day and weekend appointments are available for furnace service throughout Hillsboro and the surrounding Washington County area, including Beaverton. Call (503) 743-0417 or submit our online contact form to book your appointment.

O’Leary Air backs every job with a satisfaction guarantee. Call us today or contact us online to get started.

Signs Your Furnace Needs Repair or Replacement

Some furnace problems announce themselves clearly. Others show up as gradual changes you might attribute to something else. Knowing the difference can save you from a breakdown in the middle of winter.

Common warning signs:

No heat or weak heat even when the thermostat is set correctly
Short cycling, meaning the furnace turns on and off repeatedly without completing a full heating cycle
Unusual banging, rattling, or popping noises during operation
A yellow or flickering burner flame instead of a steady blue flame
Rising energy bills without any change in usage patterns

Furnaces between 15 and 20 years old that require repeated repairs are often better candidates for replacement than continued service. A cracked heat exchanger is a safety concern that warrants immediate professional inspection, as it can allow combustion gases into the living space. If you notice any of these signs, schedule a furnace service call before the issue worsens.

Furnace Installation & Sizing for Hillsboro Homes

A furnace that’s the wrong size for your home works against you from day one. An oversized unit short-cycles and wears components faster. An undersized one runs almost continuously without ever reaching your set temperature. Proper sizing comes from a load calculation that accounts for square footage, insulation, window area, and local climate.

We recommend two-stage furnaces for most Hillsboro homes. Because Pacific Northwest winters are relatively mild, full furnace capacity isn’t always needed. A two-stage system runs at low capacity during mild conditions and ramps to full output only when temperatures demand it, saving energy and reducing cycling. Daikin’s 96–97% AFUE models use PVC exhaust piping; 80% AFUE models use a metal flue pipe. If you can see your current exhaust pipe, that’s a quick way to identify your furnace’s efficiency tier. Installation also includes verifying gas line connections, correct venting, airflow balance, and thermostat communication before the system is commissioned.

Annual Furnace Maintenance in the Pacific Northwest

Fall is the right time to schedule a furnace tune-up in Hillsboro, before heating season demand picks up and appointment windows tighten. A typical tune-up includes inspecting and cleaning the heat exchanger, testing ignition and burner operation, checking gas pressure, measuring airflow, replacing the filter, and verifying thermostat calibration. Skipping annual service can void manufacturer warranties on many furnace models.

We service all makes and models, and our HVAC maintenance plan includes a 10% discount on non-installation services. Consistent annual care gives your furnace the best chance of running efficiently and lasting well into its expected service life.

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Comfort Done the O’Leary Way

Hear From Our Happy Clients!

"Everything you need in a HVAC business."
O'leary Air was fast, professional and everything they promised they did. They replaced both my furnace and my A/C unit. I would highly recommend them!

- Mike
"True professionals in the HVAC industry!"
They talked me through options and I never felt pressured while they also answered any questions I had. They had everything done quickly!

- Cody
"Friendly staff and excellent work."
We had a mini split with two heads installed with a third ceiling mounted head to be installed when it becomes available. It was completed in one day.

- Gary
"I highly recommend them!"
This company is great and came highly recommended by my neighborhood. They were able to work around my schedule and explained everything.

- Kelly
"We've used O'Leary Air for years!"
Their techs are great so give them a call next time you need a tune up or help with a problem in either of your units. You won't be sorry!!! 5 Stars says it all!!

- Kathie