Furnace Maintenance in DC & Alexandria, VA

You wouldn’t take a road trip in a car that’s been sitting in the garage for a year without getting a checkup, right? The same thinking applies to your home’s heating. Turning on a system after months of inactivity without a professional inspection is a gamble. Routine furnace maintenance keeps your equipment clean, calibrated, and safe so it runs smoothly and efficiently all winter long.

If you live in Gaithersburg, Rockville, Germantown, or anywhere in Montgomery County, Maryland, there’s only one name to know — Michael Bonsby HVAC, Plumbing & Electrical. During a comprehensive inspection and tune-up, our technicians perform targeted furnace maintenance tasks that reduce breakdowns, lower energy bills, and extend system life. We’ll also share practical maintenance tips you can use between visits to keep performance high and costs down.

To get the most out of your heating system this season, call 301-245-2008 or schedule your appointment online!

Should I Get My Furnace Inspected?

Modern furnaces are built to last 15–20 years, but like any machine, they need care. Dust accumulation, worn parts, and minor calibration issues build up during the off-season. Proactive furnace maintenance in the fall helps you avoid mid-winter surprises, restores efficiency, and keeps safety systems (like flame sensors and limit switches) in top shape. A fall tune-up is also the ideal time to catch small issues before they turn into costly repairs when demand is highest.

Regular furnace maintenance can revive a lagging system and ensure it operates at peak efficiency. Your annual inspection also helps prevent untimely breakdowns right in the middle of heating season. Before the first big cold snap, give your system a clean bill of health with a tune-up from Michael Bonsby HVAC, Plumbing & Electrical.

Be proactive this fall — call 301-245-2008 or contact us online today!

Furnace Maintenance Services Near You in Gaithersburg, MD

A precision tune-up from Michael Bonsby is more than a quick look. Our licensed technicians follow a detailed furnace maintenance checklist to improve safety, efficiency, and reliability:

• Inspecting the exhaust flue and verifying proper venting
• Inspecting the inducer housing for cracks and air leaks
• Inspecting and cleaning burners for proper ignition
• Inspecting the heat exchanger for damage or corrosion
• Testing for gas leaks and carbon monoxide
• Verifying combustion air and drafting
• Testing high-limit and auxiliary limit switches
• Testing the pressure switch and condensate safeties (as applicable)
• Setting and confirming manifold gas pressure
• Measuring igniter resistance and verifying spark/HSI performance
• Checking motor amps and capacitor MFD
• Confirming proper blower speed and CFM for heating mode
• Testing inducer motor amps and runtime behavior
• Cleaning pressure switch barb and condensate trap
• Cleaning the flame sensor/thermocouple
• Checking the air filter and advising on replacement frequency
• Assessing airflow and evaporator coil cleanliness
• Cleaning blower wheel and burner compartments

We’ll also show you simple steps (filter changes, keeping returns unblocked, thermostat settings) to support your furnace maintenance between visits and discuss ideal service intervals based on your home and usage.

Special Offers

You may be able to save on your furnace services! See our current rebates, discounts, and seasonal promotions available throughout Montgomery County, MD, and nearby NW Washington, DC. Ask us how pairing a tune-up with other heating services can maximize value.

Maintenance Agreements

Want predictable comfort and fewer surprise expenses? Our maintenance agreements make furnace maintenance automatic. Regular tune-ups lower operating costs, reduce emergency repairs, and help your system last longer. With a plan in place, we manage reminders, scheduling, and records — you enjoy reliable heat and priority service.

Biannual HVAC Maintenance Agreement

Two precision tune-ups per year (heating and cooling) keep your equipment clean, calibrated, and efficient. This plan lets us spot small issues early and fine-tune performance before peak season, helping avoid inconvenient breakdowns and energy waste.

Monthly HVAC Services Contract

For homes that demand consistent comfort, our monthly option adds periodic checks and filter service. We’ll inspect refrigerant lines (for combo systems), clear debris from sensitive components, and perform quick safety and performance checks. This approach drastically reduces the likelihood of sudden failures and keeps comfort consistent all year.

Interested in preventive comfort at a predictable price? Call 301-245-2008 or contact us online to compare plans and choose the best fit for your home.

Why Choose Michael Bonsby for Furnace Maintenance in MD & DC?

Homeowners choose us for reliable, thorough furnace maintenance backed by a customer-first approach and clear communication:

• Family-owned and -operated local company
• Satisfaction guaranteed from start to finish
• Licensed, educated HVAC technicians with ongoing training
• Accurate, upfront quotes for time, materials, and equipment
• Fully licensed, bonded, and insured
• ACCA member and featured provider on This Old House
• 24-hour HVAC service — usually by the next day
• Special financing available with approved credit

Keynotes: Why Furnace Maintenance Matters

• Annual furnace maintenance can improve efficiency by up to 15%, helping lower monthly heating bills.
• Most furnaces last 15–20 years — regular tune-ups help you reach the upper end of that range.
• Clogged filters cause a large share of no-heat calls; simple filter changes support airflow and protect key components.
• Safety checks during furnace maintenance help detect carbon monoxide risks and combustion issues early.

Furnace Maintenance FAQs

Schedule Your Furnace Tune-Up & Inspection Today

The best time to care for your furnace is before you need it most. Book your furnace maintenance now to avoid the mid-season rush and enjoy a safer, more efficient home all winter.

Call 301-245-2008 or contact us online to schedule your furnace maintenance in Maryland or Washington, DC.

Explore additional furnace resources:

• Tips Before Turning On Your Furnace
• Should You Turn Your Furnace Off During Vacation?
• Why Does My Furnace Keep Shutting Off?

Find Us on Google

Looking for trusted Furnace Maintenance near you? Visit our Google Business Profile to see directions, reviews, and service information for Michael Bonsby HVAC, Plumbing & Electrical in Gaithersburg, MD.