Furnace Installation in Chestertown, MD
A new furnace here will run from October through April every year. Tell us about the house, and a licensed contractor who covers Kent County will get in touch.
Tell us about the job
It takes about a minute.
Chestertown asks a furnace to run seven months of the year
From October through April, your furnace is the thing standing between your house and a winter night that averages 28°F. That is not a cold snap. That is most of the year, and the unit installed has to hold up to it.
Most of Kent County heats with electricity, and the grid here has had trouble in past years. Eleven percent of Maryland households lost power for 24 hours or more in 2024, and the region has logged 8 winter storms and 98 damaging wind events over the last ten years. A new gas furnace is worth asking about for that reason alone. Any non-weatherized gas furnace built since November 2015 has to hit 80 percent AFUE by law, so a new one will run more efficiently than whatever it replaces.
- 7 months
- October through April, your furnace is on duty
- 28°F
- the average winter night it heats against
- 80% AFUE
- the federal minimum any new unit must meet
NOAA nClimDiv, 1991–2020 normals
Maryland requires HVAC contractors to hold a state license.
That license comes from the Maryland Board of Heating, Ventilation, Air Conditioning, and Refrigeration (HVACR) Contractors. It covers the contractor, not the job itself. To get it, the contractor was tested and is on record with the state before ever stepping into your home.
The furnace installation itself is checked separately. In most cities and counties, a new furnace needs a permit from the local building office, with an inspection once the work is done. That inspection is what confirms the gas connections, the venting and the wiring were done right, and a bad gas connection is the part of this job that can actually hurt someone. The license says who is allowed to do the work. The permit and inspection say the work was checked.
Sources: Maryland General Assembly · Maryland Department of Labor
- What size furnace does my house need?
- The right size comes from a load calculation, not the square footage of your house alone. A contractor measures your windows, insulation, ceiling height, and how the house holds heat through those 28°F nights, then runs the numbers to find the furnace size that matches. A furnace that's too big will short cycle and wear out faster. One that's too small will run constantly from October through April and still leave you cold on the worst nights.
- How do I know it's time to replace my furnace?
- Age and repair history tell you most of what you need to know. A furnace that's needed more than one repair in the last couple winters is usually worth replacing rather than fixing again. Watch for uneven heat between rooms, a burner flame that looks yellow instead of blue, or a furnace that runs longer to reach the same temperature it used to hit faster. If yours is a non-weatherized gas furnace made after November 2015, it's already rated at 80 percent AFUE or higher, so a big efficiency jump isn't guaranteed just by replacing it. A contractor can tell you whether what you're seeing is normal wear or a sign the unit is done.
- Is a high-efficiency furnace worth it?
- It depends on how your house is set up and how long you plan to stay in it. With heat needed here for 7 months a year, a more efficient furnace runs a lot over a winter, so the efficiency difference shows up more than it would somewhere with a short heating season. High-efficiency furnaces also vent differently than standard ones and may need a new vent pipe run, which affects installation. A contractor can walk through what your house would need and let you weigh that against the efficiency gain.