Schedule Oil Furnace Service With GreenBox Heating & Air Today
GreenBox Heating & Air is committed to helping Kentuckians with all of their HVAC needs. Since many homes in our community utilize oil furnaces, our team is highly trained and knowledgeable about these appliances to ensure you receive expert assistance right away. We promise top-tier customer support with 24/7 emergency phone intake for priority dispatch, transparent upfront pricing, and a 100% satisfaction guarantee.
Call (859) 203-5124 or contact us online today to schedule an appointment for oil furnace services in the greater Lexington area!
 Key Points
- Backed by 1,200+ verified customer reviews, a 100% satisfaction guarantee, and Kentucky Master HVAC licensing.
- Expert technicians trained in oil nozzle replacement, electrode adjustment, fuel pump pressure calibration, and oil filter changes.
- Complete turnkey conversions, including oil tank removal coordination, gas line installation, and high-efficiency gas furnace setups.
- Clear, honest cost explanations before work begins, upfront quotes, and flexible financing options.
- Â Round-the-clock telephone intake to lock in priority dispatch when oil heating fails during winter freeze events.

Oil furnaces are an integral part of many homes in Lexington, KY, and these systems need to be working well to keep your family warm. At GreenBox Heating & Air, we regularly help homeowners with all of their oil furnace needs, including repairs, replacements, fuel conversions, and preventative maintenance. Our team is committed to your comfort, so you can count on us to provide service with the courtesy, care, and professionalism you deserve.
Call (859) 203-5124 or contact us online today to schedule an appointment for oil furnace services in Lexington or surrounding areas!
24/7 Emergency Line for Oil Furnace Repairs
Oil furnaces are generally durable appliances, but components still wear down and accumulate soot over time. When your oil furnace breaks down, GreenBox’s live answering team is available 24/7 to take your call and arrange priority technician dispatch. Recognizing warning signs early helps prevent complete heating failures:
Troubleshooting Common Oil Furnace Failures
Problem: Sluggish startup, burner running with no fire ignition, or system tripping reset button.
Solution: Igniter failures and burner lockouts stem from clogged oil spray nozzles, dirty cad cell sensors, or misaligned ignition electrodes. We clean sensors, replace nozzles, align electrodes, and restore immediate fire ignition.
Problem: Black smoke or soot discharging from supply registers and foul combustion odors.
Solution: Soot output signals incomplete combustion caused by uncalibrated oil pump pressure or clogged oil line filters. We replace fuel filters, adjust oil pump pressure, and clean the heat exchanger draft passages.
Problem: Visible fuel oil leaks around the burner assembly or tank storage connections.
Solution: Leaking fuel oil creates fire hazards and unpleasant odors. We inspect fuel pump gaskets, tighten flare fittings, replace cracked supply lines, and secure tank connections.
Problem: Decreased heating capacity, screeching noises, or visible cabinet damage.
Solution: Screeching indicates failing blower motor bearings, while poor heat output points to dirty air filters or heavy soot insulating heat exchangers. We replace filters, clean combustion chambers, and lubricate blower assemblies.
Oil Furnace Installation & Replacement
When it’s time to replace your oil furnace and install a new unit, our technicians ensure a smooth, stress-free process. We’ll evaluate your home’s heating needs to properly size and select the ideal replacement unit or explore modern gas/electric conversion options. Once you’ve approved the estimate, we’ll remove your old system and install the new furnace in its place. After installation is complete, you can enjoy dependable warmth and significantly improved fuel efficiency.
Ready to replace your oil furnace? Call (859) 203-5124 or contact us online to request a free estimate!
Maintenance & Tune-Ups for Oil Furnaces
To best serve our Central Kentucky community, we provide detailed inspections and tune-ups for all oil furnace models. Because oil combustion produces fuel residue and soot, annual tune-ups are essential. During a maintenance visit, our experienced HVAC technicians clean burner assemblies, change fuel strainers/filters, replace oil nozzles, and test combustion efficiency. Routine maintenance keeps your furnace running cleaner, extends operational lifespan, and lowers monthly fuel consumption.
If it’s been a while since your last oil furnace inspection, call (859) 203-5124 or contact us online to set up your appointment today!
Frequently Asked Questions
How do oil furnaces work?
Oil furnaces generate heat by pumping liquid fuel oil from a storage tank to a burner nozzle, where it is atomized into a fine mist, mixed with air, and ignited inside a sealed combustion chamber. A blower fan then circulates the warm air through your home’s ductwork system.
How often should I schedule maintenance for an oil furnace?
Due to soot and fuel oil residue buildup, oil furnaces require professional maintenance at least once per year (typically in late summer or fall). Systems operating continuously through severe winters benefit from bi-annual checkups to replace fuel filters and clean nozzles.
How long do oil furnaces last?
Oil furnaces feature heavy-gauge steel or cast-iron heat exchangers and can last between 20 to 25 years with diligent annual maintenance. However, as units age past 15 to 20 years, burner efficiency drops and component replacement costs increase.
Should I upgrade my oil furnace to gas or electric?
Converting from oil to natural gas or an electric heat pump often makes sense due to fuel price stability, reduced soot maintenance, and higher AFUE energy ratings. Gas conversions deliver the lowest monthly heating costs, while heat pumps eliminate the need for oil delivery tanks entirely.
What is involved in converting from an oil to a gas furnace?
Conversion involves safely decommissioning and removing the old oil tank, running gas lines to the furnace location, and installing a new high-efficiency gas furnace. GreenBox Heating & Air manages the entire process, including permits, tank removal coordination, and complete installation in 1 to 2 days.
Last Update: October 29, 2026