What's Included in Furnace Maintenance Service?
- Allstar Service & Repair

- 6 days ago
- 4 min read

When the cold months roll around, the last thing you want is a furnace that quits on you. Regular furnace maintenance keeps your heating system running smoothly when you need it most.
But what exactly happens during a professional tune up? Let's break down everything you need to know about keeping your home warm and comfortable all winter long.
Why Furnace Maintenance Matters
A yearly check:
Prevents unexpected breakdowns
Reduces energy bills
Extends the lifespan of your furnace
Identifies small issues before they become costly repairs
Improves overall system efficiency
The Visual Inspection Comes First
Every good furnace tune up starts with a thorough look around. A trained technician checks your entire heating system from top to bottom. They look at the heat exchanger for cracks or rust.
They inspect all electrical connections to make sure everything is tight and safe. They check the blower motor and fan blades for wear and tear.
This visual check also includes looking at your thermostat installation. Is it level? Is it working right? Sometimes a faulty thermostat causes problems that seem like furnace issues.
The technician makes sure all these parts work together like they should.
Cleaning Is Key
Dust and dirt are your furnace's worst enemies. During a maintenance visit, technicians
Clean dust from the blower assembly
Clean burners for efficient fuel combustion
Inspect and clean the flame sensor
Clean or replace the furnace filter
Improve airflow and indoor air quality
Testing All the Safety Features
Your safety comes first. That's why a big part of any service call involves checking all the safety controls.
Checking Limit and Pressure Switches
Technicians test the limit switches that prevent overheating. They check the pressure switches that make sure your system vents properly.
They inspect pilot lights on older models to ensure they stay lit and burn with the right color flame. They test the ignition system to confirm it lights reliably.
Carbon Monoxide and Gas Leak Testing

Carbon monoxide is a serious concern with any fuel-burning appliance. Professional technicians use special tools to test for gas leaks and carbon monoxide.
They make sure all the venting is clear and working correctly. This part of the service gives you peace of mind that your family stays safe.
Measuring System Performance
Numbers tell the story of how well your furnace runs. During maintenance, technicians:
Measure gas pressure levels
Check temperature rise across the heat exchanger
Test blower motor amp draw
Identify inefficiencies before they cause breakdowns
Lubricating Moving Parts
Your furnace has several moving parts that need to stay well oiled. The blower motor often has bearings that need lubrication. Without it, these parts wear out faster and can fail completely. Proper lubrication reduces friction, which means less wear and quieter operation.
This simple step can add years to your equipment's life. It's a small thing that makes a big difference in how long your system lasts.
Checking Your Ductwork
The best furnace in the world won't help if your ductwork installation has problems.
Detecting Air Leaks in Ducts
Technicians look for leaks in the ducts that waste heated air. They check for proper insulation. They make sure all the vents are open and air flows freely throughout your home.
Improving Airflow and Efficiency
Leaky ducts can waste up to 30% of your heated air. That's money flying out of gaps and holes instead of warming your house. Fixing these issues improves comfort and cuts your energy bills.
When Maintenance Reveals Bigger Issues
Sometimes a routine tune up uncovers problems that need attention. Maybe the heat exchanger has a crack that requires heating repair. Perhaps the blower motor is failing.
Or the system is just so old that heating installation of a newer, more efficient model makes more sense than continuing to patch up an outdated unit. In some cases, complete furnace installation becomes necessary when repairs would cost more than replacement.
A good technician will explain what they find and give you options. They'll help you understand when a repair makes sense and when furnace replacement cost is actually the better investment.
They can also handle emergency furnace repair if something needs immediate attention.
How Often Should You Schedule Service?
Most experts recommend:
Once per year for most systems (fall recommended)
Twice per year for older or heavily used furnaces
Spring and fall checkups for proactive maintenance
The Connection to Other HVAC Services
Your heating system doesn't work alone. It's part of your whole home comfort system. That's why companies that handle home heating often provide other HVAC services too. They understand how all the pieces fit together.
Good maintenance now can prevent the need for emergency service later. It also helps when you're planning bigger projects like upgrading your thermostat or improving your whole system's efficiency.
What You Can Do Between Service Calls
Professional maintenance is essential, but you can help too.
Change air filters every 1–3 months
Keep the furnace area clear
Listen for unusual noises
Check thermostat batteries
Call for service if something feels off
Ready for Worry Free Winter Comfort?
Now you know what goes into a complete furnace tune up. It's more than just a quick look.
It's a detailed service that keeps your heating system safe, efficient, and reliable. Regular care saves money on energy bills and prevents unexpected breakdowns when you need heat most.
Don't wait until your furnace stops working on the coldest night of the year. Allstar Plumbing Heating & AC provides complete maintenance services that keep your home comfortable all season long.



Comments