Notes from the Service Call

Heating and Cooling, Explained Straight

Plain answers about furnaces, air conditioners, heat pumps, and the questions worth asking before anyone tells you to replace the whole system. Written by a team that would rather fix it right the first time.

Serving: Portland Beaverton Gresham Hillsboro Lake Oswego Tualatin Westland West Linn
About the Blog

The Questions We Hear on the Phone, Answered in Writing

A lot of HVAC calls start with a question, not a breakdown. Is the breaker tripped? Is the fan even running? Is this worth fixing, or is somebody trying to sell me a new unit? We talk those questions through over the phone with homeowners across the Portland metro, often before anyone needs to come out, and this blog is where we write the answers down.

If your air conditioner quits in the middle of summer, start with our rundown of the most common AC failures, then see how we approach fixing your AC. Furnace lighting and then shutting off, or not lighting at all? We cover that too, along with what goes into getting your heat back on when the problem runs deeper than a dirty part.

Before you sign off on a whole-system replacement, read what to look for in an HVAC contractor and why a second opinion can save you real money. And if you are weighing a new system, our look at electric and gas heat lays out the trade-offs for Portland-area homes.

Open rooftop packaged HVAC unit showing control board, capacitor, contactors and wiring, with a multimeter on top
From the Blog

Recent Posts on Repairs, Replacements, and Maintenance

The Importance of HVAC Maintenance

What a maintenance visit catches before your heat or AC fails, and what you can check yourself.

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A Comprehensive Guide to AC Repair

The checks to make before you call, and the signs your AC needs a technician.

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Preparing Your HVAC System for Fall

What to check yourself and what to leave to a technician before heating season starts.

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Signs It's Time for Heat Replacement

The real signs your furnace needs replacing, and the ones that only need a repair.

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The Hidden Costs of Neglecting Your HVAC

Where skipped maintenance shows up on your bills, and how to catch it early.

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The Dangers of a Cracked Heat Exchanger

The warning signs worth acting on, and how to check a diagnosis before you buy a new furnace.

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Comparing Electric vs. Gas Heating Systems

Running costs, safety, and upkeep side by side, so you can pick the right heat for your home.

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The Importance of Commercial HVAC

Why your building's heating and cooling deserves a schedule, and the warning signs to watch for.

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What to Expect During a Commercial HVAC System Upgrade

How to plan an upgrade around your business, and why the diagnosis comes before the quote.

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Electric vs. Gas Heating in Commercial Buildings

Which fuel fits your shop, office, or storefront, and what to check before you commit.

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When to Call for Emergency HVAC Service

How to tell if your heating or cooling problem can't wait, and what to check first.

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Pre-Summer AC Tune-Up Checklist

What to check yourself and what a technician should test before the first hot week.

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How Your AC Works and Why Maintenance Matters

How your AC moves heat, which parts wear out first, and what a tune-up actually checks.

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Common AC Failures

The five problems behind most no-cooling calls, and how to tell a fix from a replacement.

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Choosing the Right HVAC Contractor

How to tell a technician from a salesperson, and when to get another quote.

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DIY AC Maintenance: What to Leave to a Pro

The AC chores you can safely do yourself, and the ones that need a technician.

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When to Replace Your AC

The four questions that decide whether your AC needs a repair or a new system.

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Portland Metro AC & Cooling Guide

Repair, replace, or add cooling: how to know which one your home actually needs.

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Wildfire Smoke and Your HVAC

What smoke does to your filter and coils, and how to tell a filter change from a repair.

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Do Heat Pumps Work in Portland Winters?

How heat pumps handle our winters, and how to tell normal cold-weather behavior from a real problem.

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