My furnace runs but the house is cold. What's likely?expand_more
Start with the obvious: a filter so loaded it's choking airflow, or a thermostat calling incorrectly. Beyond that, a failing blower motor, a stuck damper, or duct disconnects in the crawlspace are common in older metro homes. A tech should measure airflow rather than guess.
Is a heat pump really enough for a Portland-area winter?expand_more
For most of the metro, yes. Modern cold-climate heat pumps hold capacity well below our typical winter lows, and many installs keep the existing furnace as backup for the rare hard freeze. Higher-elevation addresses toward the Gorge or the Cascade foothills are the cases worth sizing more carefully.
How often should I have the system serviced?expand_more
Once a year is the standard advice, and twice if you have a heat pump doing both heating and cooling. Filters need attention far more often than that — every one to three months depending on pets and the filter's thickness.
Can a technician add AC to my existing furnace?expand_more
Often yes, by adding an outdoor condenser and an evaporator coil above the furnace, provided the ductwork and electrical panel can handle it. The two things that scuttle it are undersized return ducts and a panel with no room for the new circuit. Both should be checked before you sign.
Why do quotes for the same job vary so much?expand_more
Equipment tier, warranty length, whether duct sealing and permits are included, and how much electrical work is needed all move the number. Ask each bidder for the model numbers and what's excluded. That usually explains the spread better than the bottom line does.