AC Repair Washington DC Serviceswhat each one covers
Air conditioners fail in a handful of predictable ways. These pages explain each kind of repair for DC homes, from a dead capacitor on a rowhouse roof to a heat pump that will not defrost.
All services
ServiceCapacitor and Fan Repair
A humming outdoor unit with a fan that will not spin often means a failed capacitor or fan motor. What fails, why heat makes it worse, and what to expect.
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ServiceAC Installation
Replacing or adding cooling in a DC rowhouse or detached home: sizing, ducted versus ductless, heat pumps, permits, historic review and refrigerant changes.
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ServiceAC Not Cooling
Running but not cooling is the most common summer call in DC. What causes it in rowhouses and older homes, and what a technician checks.
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ServiceHeat Pump Repair
Heat pumps cool in summer and heat in winter. Common problems in DC homes, defrost and backup heat, and what a technician checks.
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ServiceRefrigerant Leak Repair
Low refrigerant means a leak. How leaks are found and repaired in DC systems, from long rooftop line sets to mini-split flare joints.
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Services
How the services fit together
Most calls start with a symptom: the system runs but does not cool, the outdoor unit hums, there is ice or water, or it will not start. The not-cooling page walks through the main causes and is a good place to begin.
Refrigerant leak repair covers finding and fixing leaks in long rooftop line sets, coils and mini-split joints. Capacitor and fan repair covers the outdoor electrical parts that fail most often in heat waves. Heat pump repair covers systems that heat as well as cool.
AC installation covers sizing, ducted and ductless options, permits and historic review for when replacement makes more sense than repair. Each page lists questions to ask and the sources behind it.
If you are not sure which applies, the troubleshooting guides help narrow it down, or call and describe the problem to a technician.
Every page is written for the kinds of homes found across the District, with notes on rooftop access, condos and historic districts.
Renters can read them too, so they can describe a problem clearly to a landlord or property manager.
Services
Repair services for DC homes

Capacitor and Fan Repair
A humming outdoor unit with a fan that will not spin often means a failed capacitor or fan motor. What fails, why heat makes it worse, and what to expect.
Explore service
AC Installation
Replacing or adding cooling in a DC rowhouse or detached home: sizing, ducted versus ductless, heat pumps, permits, historic review and refrigerant changes.
Explore service
AC Not Cooling
Running but not cooling is the most common summer call in DC. What causes it in rowhouses and older homes, and what a technician checks.
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Heat Pump Repair
Heat pumps cool in summer and heat in winter. Common problems in DC homes, defrost and backup heat, and what a technician checks.
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Refrigerant Leak Repair
Low refrigerant means a leak. How leaks are found and repaired in DC systems, from long rooftop line sets to mini-split flare joints.
Explore service
DC air conditioning
Not sure what you need?
Call and an independent HVAC technician working in DC can help you work it out.
