Combustion Analysis in Maryland & Washington, DC

Maximize Your Furnace’s Efficiency

Do you think your furnace is running at its maximum efficiency? Want to know for sure? Call Michael Bonsby HVAC & Plumbing! Our expert HVAC technicians can run a combustion analysis on your furnace and help you figure out exactly where it’s losing efficiency – and what you can do about it!

A combustion analysis is basically a measurement of your system’s flue gases to determine the completeness of the combustion process. Fuel combustion is the first step toward maximizing your furnace’s fuel efficiency, and as a result it’s extremely important to fully understand it before your furnace is fully installed.

Schedule service with Michael Bonsby HVAC & Plumbing today—301-990-7970.

What Is a Combustion Analysis?

Most homes in Maryland and Washington, DC use a gas, oil, or propane furnace. These heating units are made up of mostly carbon and hydrogen—which needs excess air in order to function properly. The excess air combines with oxygen from the combustion air to create efficient combustion. Too much or too little fuel combined with the available combustion air could result in unburned fuel and inefficient heating.

Air for combustion is divided into four types: primary air, secondary air, excess air and dilution air.

  • Primary air provides a percentage of the combustion air. More importantly, however, it controls the amount of fuel that can be burned.
  • Secondary air improves combustion efficiency by allowing the fuel to burn completely. Normally, power burners won’t require secondary air. However, air leaking in via access doors, burner mounting flanges, boiler sections, etc., will dilute the flame and flue gas temperatures, reducing operating efficiency and making it more difficult to monitor combustion conditions.
  • Excess air is air supplied to the combustion process to ensure each molecule of fuel is totally surrounded by combustion air. A furnace tune-up will improve the flow of combustion air, reducing the need for excess air.
  • Dilution air is required in order to control stack draft, which will reduce efficiency-inhibiting condensation from forming in your vent system.

Michael Bonsby HVAC & Plumbing will make sure all chemical reactions that are supposed to take place in your furnace are being done safely and efficiently. Schedule an appointment today to see if your furnace is running as efficiently as it should!

Increase Furnace Efficiency with a Combustion Analysis

When we talk about a furnace needing to be “properly installed” in order to be as efficient as possible, we mean it has to be installed with special consideration paid to combustion analysis. As you may know, every furnace comes with an AFUE rating – annual fuel utilization efficiency. This is the maximum rating possible for a specific furnace. The only way to tell the actual fuel utilization rate of your specific furnace is by performing a combustion analysis!

Why Contact Michael Bonsby HVAC & Plumbing?

  • Family owned and operated, local HVAC company
  • Complete customer satisfaction guaranteefrom start to finish
  • Trained, educated, and licensedHVAC technicians
  • Accurate quotesfor time, materials, and equipment
  • Fully licensed, bonded, and insured HVAC service
  • Air Conditioning Contractors of America(ACCA) member
  • Featured HVAC provideron “This Old House”
  • 24-hour HVAC service—usually by the next day!
  • Special HVAC financingavailable with approved credit

For more than 20 years, we have been providing HVAC services to homes and offices throughout Maryland and Washington, DC. With our expertise and great customer service, we can help get your heater running as efficiently as possible.

Contact us online or give us a call to schedule service!

Michael Bonsby HVAC & Plumbing services the following areas:

MARYLAND: Bethesda, Boyds, Chevy Chase, Clarksburg, Clarksville, Damascus, Darnestown, Derwood, Ellicott City, Gaithersburg, Germantown, Glenelg, Kensington, Laytonsville, Montgomery Village, Mt. Airy, North Bethesda, North Potomac, Olney, Potomac, Rockville, Silver Spring, Urbana


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