HVAC Installation in Annapolis, 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 Anne Arundel County will get in touch.
Tell us about the job
It takes about a minute.
Eleven months of work most years
Your new system will not get much rest in Annapolis. Heat runs October through April, seven months, on nights that average 29°F. Cooling picks up June through September, four months, on afternoons averaging 86°F. Only one month goes by without asking something of it.
Almost half of homes here heat with electricity, so the furnace or heat pump is carrying real load on those cold nights, not just topping off a mild chill. The power behind it is not always steady either. Statewide, 11% of households went at least 24 hours without power in 2024, and the region has logged 10 winter storms and 248 damaging wind events over the past ten years. A system sized for what this winter and summer actually ask of it, installed by someone who plans for the power going out, is what holds up here.
- 7 months
- October through April, your system heats
- 4 months
- June through September, it cools
- 29°F
- the average winter night it heats against
- 86°F
- the average summer afternoon it cools against
NOAA nClimDiv, 1991–2020 normals
Maryland requires HVAC contractors to hold a state license.
The license is held by the contractor, not issued job by job, so what you're checking is the business, not the crew. Maryland's Board of Heating, Ventilation, Air Conditioning, and Refrigeration Contractors tested that contractor and keeps a record of them before they're allowed to take on work like this.
For a heating and cooling installation in Anne Arundel County, the license is what stands behind the contractor, and the permit is what stands behind the work itself. Most cities and counties here require a permit from the local building office to replace a furnace, air conditioner or heat pump, along with an inspection once the job is finished. That inspection is what catches a bad gas connection or a system that wasn't installed to code, separate from anything the state license covers.
Sources: Maryland General Assembly · Maryland Department of Labor
- When should I replace my HVAC system?
- Replace it when repairs start costing more than they're worth or the system can't keep up anymore. An older furnace or air conditioner that breaks down every season, or one that runs constantly without getting the house to temperature, is telling you something. Homes here need heat or cooling 11 months of the year, so a system on its last legs does not get much rest. A contractor can look at the age and condition of what you have and tell you whether repair still makes sense.
- Should I replace my furnace and air conditioner at the same time?
- If both are old, replacing them together is usually the better path, though it depends on the condition of each. A furnace and air conditioner installed years apart often were not matched to work well together, and pairing an old unit with a new one can limit what the new one can do. If one system is much newer than the other, a contractor can tell you whether it's worth keeping for now or whether replacing both makes more sense given how they'll run together.
- What happens during an HVAC installation?
- A contractor removes the old furnace and air conditioner or heat pump, then sets the new equipment in place and connects it to the ducts, refrigerant lines, gas or electrical supply, and thermostat. In most places, including here, this job needs a permit from the local building office, and an inspector checks the work once it's done. The contractor tests the system afterward to confirm it's heating and cooling properly before the job is finished.