HVAC Installation in Aberdeen, MD
A new system here will heat from October through April and cool from June through September every year. Tell us about the house, and a licensed contractor who covers Harford County will get in touch.
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Eleven months of work for one system in Aberdeen
Winter nights here average 26°F from December through February, and homes need heat from October through April, seven months of the year. Summer hands the job to the air conditioner, with afternoons averaging 85°F from June through September. Add it up and a heating and cooling system in Aberdeen works eleven months out of the year.
A new system here also has to hold up to what comes with the weather. Harford County has seen 24 winter storms and 329 damaging wind events over the past ten years, and 11% of Maryland households went at least 24 hours without power in 2024. 42.3% of homes here heat with electricity, so when the power goes out, so does the heat. Whatever gets installed needs to be sized for both the cold nights and the hot afternoons, and able to start back up on its own once the power returns.
- 7 months
- October through April, your system heats
- 4 months
- June through September, it cools
- 26°F
- the average winter night it heats against
- 85°F
- the average summer afternoon it cools against
NOAA nClimDiv, 1991–2020 normals
Maryland requires HVAC contractors to hold a state license.
The Maryland Board of Heating, Ventilation, Air Conditioning, and Refrigeration Contractors issues that license, and it covers the contractor, not each job. A contractor either holds that license or does not, and the same person is on record for the next job and the one after that.
For this kind of job, the license is what stands behind the contractor doing the work. In most cities and counties, replacing a furnace, air conditioner or heat pump also needs a permit from the local building office, with an inspection once the work is finished. That inspection is separate from the license and looks at what was actually installed at your house.
Sources: Maryland General Assembly · Maryland Department of Labor
- When should I replace my HVAC system?
- Replace it when repairs start happening often, when the system struggles to keep the house comfortable on a cold night or a hot afternoon, or when a technician tells you a major part like the compressor or heat exchanger is failing. At that point, more repairs just delay the same outcome. Homes here need heat or cooling 11 months of the year, so a system on its way out tends to get found at the worst possible time, a 26°F night or an 85°F afternoon.
- Should I replace my furnace and air conditioner at the same time?
- If both are old, yes, replacing them together usually makes sense. A furnace and air conditioner installed as a pair are matched to work together, and putting a new air conditioner on an old furnace, or the reverse, can keep the new unit from performing the way it was designed to. If only one has failed, a contractor can look at the other and tell you whether it is worth replacing now or waiting.
- What happens during an HVAC installation?
- A contractor removes the old furnace and air conditioner or heat pump, sets the new equipment in place, and connects it to the ductwork, refrigerant lines, gas line or electrical circuit as needed. They also check the ductwork, since a new system pushing air through leaky or poorly sized ducts will not heat or cool the house properly. In Aberdeen, replacing this kind of system needs a permit from the local building office and an inspection once the work is done. The contractor doing the job has to hold a Maryland HVACR license, and pulling the permit is part of what they handle.