The HVAC world is full of half-truths and old habits that just won’t die. And unfortunately, many homeowners make decisions based on outdated advice—or worse, bad information from inexperienced salespeople.
So in this final part of our series, we’re busting some of the biggest myths we hear when helping people choose a new furnace or heat pump.
Let’s set the record straight so you can make a confident, informed decision.
Myth 1: Bigger Equipment Means Better Comfort
This is probably the most common misconception. Many people think a larger furnace or heat pump will keep their home warmer or cooler more quickly—and more effectively.
The truth? Oversized equipment often performs worse.
When a system is too large for the home, it cycles on and off too quickly. That means:
- Uneven temperatures
- Higher energy bills
- Extra wear and tear on components
- Poor humidity control in summer
At Northwest HVAC, we complete a full load calculation to make sure your equipment is properly sized—not just bigger.
Myth 2: Heat Pumps Don’t Work in Cold Weather
This used to be true—but it’s not anymore.
Modern cold-climate heat pumps are designed to operate efficiently even when outdoor temperatures drop into the teens or lower. In fact, many homeowners are switching to all-electric heat pump systems for their heating and cooling needs.
If you’re considering a heat pump, we’ll help you determine if your home is a good fit and whether a dual-fuel (hybrid) setup might offer added peace of mind.
Myth 3: You Need to Feel a Rush of Hot Air to Be Comfortable
A common belief is that a strong blast of warm air means the system is working well.
In reality, consistent, gentle airflow is what delivers true comfort. Variable-speed systems maintain steady temperatures more efficiently, quietly, and evenly. You might not feel a blast—but you’ll feel better all day.
Myth 4: “It’s Working Fine Because It Turns On”
Just because your system powers up doesn’t mean it’s working well.
Undiagnosed issues like duct leakage, high static pressure, poor airflow, or incorrect sizing can silently reduce efficiency and comfort—while increasing your utility bills.
We often hear this myth from homeowners who’ve been “just getting by” for years with inconsistent comfort. The fix isn’t always expensive—but it starts with the right diagnosis.
Myth 5: All HVAC Contractors Do the Same Thing
Not even close.
Many companies send out salespeople with little technical training. They may quote whatever equipment they’re incentivized to sell that week—without testing, diagnostics, or real design work.
At Northwest HVAC, all of our comfort consultants are former technicians. We measure, test, and calculate before we ever make a recommendation. Because when we treat your home like our own, we don’t cut corners.
Get the Truth—and the Comfort You Deserve
Our goal isn’t to “sell” you anything. It’s to help you understand how HVAC systems really work, what your home actually needs, and why real performance comes from real design—not just brand names or buzzwords.
Let’s fix what’s really wrong and get your home comfortable the right way.
About Northwest HVAC Service
Northwest HVAC Service is a family-owned business proudly serving Vancouver, WA and surrounding communities since 1998. We specialize in residential retrofit HVAC systems, including ductless upgrades, electric heat pumps, airflow redesign, and comfort diagnostics. Whether you’re replacing outdated equipment or trying to fix long-standing comfort issues, we bring honest advice, expert service, and long-term solutions you can trust.