Baltimore sits in IECC Climate Zone 4A, and your HVAC system works hard here in two directions. Cooling season runs from late May through mid-September, with stretches in the mid-90s and Chesapeake humidity that loads down evaporator coils. Winters bring January lows in the teens, the occasional nor'easter dropping a foot of snow, and ice storms that knock branches into outdoor coils. Hurricane remnants pushing inland in August and September flood basement air handlers across Federal Hill and Locust Point, so your equipment sees abuse most months out of the year.
Most Baltimore homes run gas furnaces paired with central air conditioners. That has been the standard setup across the metro for decades, and it handles the temperature range well. Heat pumps are turning up more often in newer builds, especially in renovated rowhouses around Patterson Park and the new construction along Boston Street through Canton. Ductless mini-splits are popular in third-floor rowhouse bedrooms, finished basements, and converted attic spaces across Federal Hill, Hampden, and Charles Village.
We work on all of it. Gas furnaces, heat pumps, central air conditioners, and ductless mini-splits. If it heats or cools your Baltimore home, we can fix it. Ring (410) 555-0123 and tell us what is happening. We get a tech to your home for AC repair or heating repair the same day.
Gas furnaces in Baltimore run more often than most homeowners realize because of the cold mid-Atlantic mornings from December through March. A failed igniter, a cracked heat exchanger, or a dirty flame sensor are the top causes of no heat. When a January Arctic blast drops the lows into the teens for a week, a furnace that will not fire makes the rowhouse feel miserable. We carry igniters, flame sensors, and control boards on every truck. Most furnace repairs across Baltimore run $150 to $500 and we wrap them up the same day you ring.
Heat pumps work well in Baltimore most of the year, but they take a beating during the rare deep-freeze events and ice storms. A failed defrost board or a stuck reversing valve blocks the system from switching between heating and cooling modes. Low refrigerant hits both modes. If your heat pump is blowing lukewarm air either way, ring us before the compressor takes damage.
One bedroom is freezing, the next is sweltering. In most Baltimore homes that comes back to ductwork. Flex duct in unconditioned attics, common in older rowhouses around Patterson Park, Hampden, and the older blocks of Federal Hill, breaks down over 8 to 12 years in attic temps that hit 130 in summer. Connections come loose, insulation flattens, and dampers seize. Three-story rowhouses also struggle with stack effect: the third floor cooks while the basement chills. We look at the ductwork, find the splits or restrictions, and fix them so every room gets the airflow it was designed for.
Before you toss the thermostat, check the batteries. We get this call all the time. Beyond batteries, thermostat problems include loose wiring from temperature swings, gaps between newer smart thermostats and older HVAC gear, and bad settings that block startup. If the screen is lit but nothing happens when you change the temp, ring us at (410) 555-0123. Usually a quick fix.
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