Furnaces
Furnace Repair, Installation & Service in Olney, MD
When the temperature drops across Montgomery County, your furnace is what stands between your family and a cold house. Olney Heating and Air Conditioning repairs, replaces, and maintains gas, propane, and electric furnaces for homes throughout Olney, Silver Spring, Rockville, Bethesda, Gaithersburg, and the surrounding Montgomery County communities. As a family-owned company with more than 40 years of HVAC experience, we deliver honest advice, fair upfront pricing, and warm, reliable comfort.
From a furnace that will not start to a planned high-efficiency upgrade, our technicians show up on time, diagnose the real problem, and never sell you work you do not need.
The Right Furnace, Properly Installed
A correctly sized, professionally installed furnace heats your home evenly, runs quietly, and keeps energy bills in check for 15 to 20 years. Too small and it never quite keeps up; too large and it short-cycles, wearing out early. We calculate your home’s true heat load and match you to the right system rather than guessing.
Today’s high-efficiency furnaces reach 95% AFUE and beyond, turning nearly every dollar of fuel into usable heat. For many Olney-area homes, upgrading from an older 70 to 80% unit means noticeably lower winter bills and steadier comfort in every room.
Our Furnace Services
Furnace Repair
No heat, weak airflow, short-cycling, a furnace that keeps shutting off, or strange smells and noises, we find the cause fast and fix it right, with the price agreed before we begin.
Furnace Installation & Replacement
Free, no-pressure estimates on right-sized gas, propane, and electric furnaces from trusted brands, expertly installed, sealed, and tested for safe, efficient operation.
Maintenance & Tune-Ups
Seasonal cleaning, burner and heat-exchanger inspection, filter service, and safety checks that protect efficiency, prevent breakdowns, and extend the life of your system.
Why Furnace Maintenance Matters
A clean, tuned furnace uses less fuel, heats more evenly, and is far less likely to fail on the coldest night of the year. Annual service also includes a carbon-monoxide and heat-exchanger safety check, which protects your family, and it helps keep your manufacturer’s warranty valid.
Signs Your Furnace Needs Attention
Rising heating bills, uneven heat between rooms, a yellow or flickering burner flame, frequent cycling, rattling or booming on startup, or a furnace over 15 years old are all reasons to call. Addressing small issues early usually costs far less than an emergency replacement.
Why Olney Homeowners Trust Us
Olney Heating and Air Conditioning is a licensed, insured, family-owned business serving Olney, Silver Spring, Rockville, Bethesda, Gaithersburg, and the surrounding Montgomery County communities. With 40-plus years of experience, we treat every home like our own: straightforward recommendations, clean and careful work, fair and upfront pricing, and technicians who respect your time and your space.
Frequently Asked Questions
How long does a furnace last?
Most gas furnaces last 15 to 20 years with annual maintenance. Skipping service tends to shorten that life and increase the chance of breakdowns.
Should I repair or replace my furnace?
If the unit is under 15 years old and the fix is minor, repair usually makes sense. For older furnaces with rising bills or repeated failures, a high-efficiency replacement often costs less over time. We give you an honest comparison.
What furnace efficiency should I look for?
AFUE measures how much fuel becomes heat. Many Montgomery County homeowners do well with 90 to 96% AFUE models. We calculate the payback for your specific home before you decide.
Do you offer emergency furnace repair?
Yes. Losing heat in a Maryland winter is urgent, and we work to restore your comfort as quickly as possible.
Stay Warm This Winter
Schedule furnace repair, a tune-up, or a free replacement estimate with Olney Heating and Air Conditioning. Honest service and 40-plus years of trusted comfort across Montgomery County.