Do You Need a New HVAC System or Just a Repair?

When your HVAC system starts making strange noises or stops keeping your home comfortable, it’s easy to wonder: Is this a simple fix—or is it time to replace the whole thing? It’s a common dilemma for homeowners, especially when the system is getting older or has already needed a few repairs.

The truth is, systems for heating and cooling in Lake Oswego, OR, are built to last—but like any mechanical system, they wear down over time. Sometimes, a small issue like a faulty thermostat or a worn capacitor is all it takes to throw things off. Other times, you’re looking at a bigger problem that might not be worth fixing.

We'll walk through the signs, weigh the pros and cons, and give you the insight you need to make the right call for your home and budget.

Start With the Basics – What’s Going On?

Before anything else, take note of what your HVAC system is doing—or not doing. Some problems are easy to spot, while others require a closer look:

• Uneven temperatures across rooms or floors

• Strange noises—clanking, hissing, banging, or buzzing

• Weak airflow from vents

• Unusual smells like burning, mustiness, or mold

• Sudden jumps in your utility bills

If you see any of these issues, it’s time to bring in a licensed HVAC technician. A professional inspection will pinpoint the root cause and let you know whether the issue is mechanical, electrical, or something else entirely.

When a Repair Is the Right Move

Not every HVAC issue spells disaster. In fact, many common problems can be resolved with a quick repair, especially if your system is relatively new or well-maintained.

Repairs are usually the better option when:

• The unit is less than 10 years old

• It’s the first major issue you’ve had

• The repair is minor, like replacing a thermostat, capacitor, or dirty air filter

• The system has been reliable up until now

• Repair costs are low compared to the price of a new unit

Routine maintenance also plays a big role here. If you’ve been changing filters regularly and scheduling seasonal tune-ups, your system is more likely to bounce back from a hiccup without needing a full replacement.

Signs It’s Time for a New HVAC System

Sometimes, a repair is only a short-term fix, and the smarter move is to invest in a new system. This is even more true if your current HVAC unit is aging or has been giving you repeated trouble.

Here are clear signs it may be time to replace:

• Your system is over 12–15 years old

• You’ve had multiple breakdowns in the past few years

• Expensive repairs are becoming more frequent

• Your system uses R-22 refrigerant, which has been phased out (making it harder and more expensive to service)

• Your utility bills are unusually high, even with consistent use

• The system struggles to keep up, leaving your home uncomfortable

The 50% Rule: A Helpful Benchmark

Here’s a simple rule of thumb many HVAC professionals recommend: If the cost of the repair is more than 50% of the cost of a new system, it’s time to replace it.

This isn’t a hard-and-fast rule, but it’s a helpful benchmark. For example, if you’re facing a $2,500 repair and a full replacement would cost $5,000, it often makes more sense to invest in the new system, especially if yours is already nearing the end of its expected lifespan.

Get Expert Heating and Cooling Services in Lake Oswego, OR

Need expert advice? Contact A-TEMP Heating, Cooling & Electrical for HVAC installation, repair, or replacement you can rely on. We’ve served the community for over 50 years with prompt service, clear pricing, and quality workmanship.

Our technicians are background-checked, drug-tested, and committed to keeping your space clean from start to finish. And we use trusted products from top manufacturers and never surprise you with extra charges.

Whether it’s a quick repair or a full system replacement, we’re here to help.