Furnace Maintenance & Tune-Ups in Herndon, VA
A furnace that gets regular attention starts reliably, heats evenly, and surprises you less often. Our tune-ups work through your whole heating system, cleaning, tightening, and testing everything that matters before the cold settles in.
What Happens at a Tune-Up
One visit, four stages, and a furnace that is ready for winter.
Safety check first
We start with the heat exchanger, gas connections, and venting, the parts that protect your household.
Clean and tighten
Burners, the flame sensor, and the blower compartment get cleaned. Electrical connections get tightened.
Test every control
Thermostat, limit switches, ignition, and safety shutoffs all get tested through a full heating cycle.
Report what we find
You get a plain summary: what is fine, what to watch, and what is worth fixing, in priority order.
Everything We Check During a Visit
A tune-up is not a quick look. This is the full list we work through.
- ✓Heat exchanger inspection
We look over the heat exchanger for cracks and corrosion, the most important safety check on a gas furnace.
- ✓Burner and ignition cleaning
Dirty burners and a weak flame sensor cause most no-heat calls. We clean both.
- ✓Blower motor and wheel
The blower gets inspected and the wheel cleaned so air keeps moving through your ducts.
- ✓Filter check and sizing
We check your filter's condition and confirm you are using the right size and type.
- ✓Gas line and venting
Connections get checked for leaks and the flue gets checked for blockages.
- ✓Thermostat calibration
We verify the thermostat reads true and cycles the furnace correctly.
- ✓Electrical connections
Loose connections get tightened to prevent mid-winter failures.
- ✓Full-cycle test
We run the furnace through a complete heat cycle and check airflow at the registers.
Tune-Up Questions
Straight answers about furnace maintenance.
How often should a furnace be serviced?
Once a year, in the fall, before heating season. That timing lets us catch wear from last winter before the system has to work hard again.
What does a tune-up actually prevent?
Most no-heat calls come from dirty flame sensors, worn ignitors, and clogged filters. All of those are things a tune-up addresses. Nothing is certain, but maintained furnaces break down far less often.
Do electric furnaces need tune-ups too?
Yes. Electric furnaces have no burners or flue, but they still have heating elements, sequencers, blower motors, and controls that wear and loosen with time.
Will a tune-up lower my heating bills?
A clean, properly adjusted furnace burns less fuel to make the same heat. Dirty burners and a clogged blower force it to work harder than it should.
Can I change the filter myself between visits?
Absolutely, and you should. Check it monthly in winter and swap it when it looks dirty. We show you where it is and what size to buy.
Last updated: October 19, 2026
Get winter-ready before winter hits.
A fall tune-up is the simplest way to protect your heat. Call now and pick a day that suits you.