How to clean AC coils
Evaporator and condenser coil cleaning steps for apartment central AC and ductless heads.
Coil cleaning guideHVAC Guides for NYC Apartments & Buildings
HVAC guides written by the AC Repair NYC team, a licensed contractor based at 517 E 77th St, Manhattan. Each article covers a common symptom, cleaning task or system decision the way we explain it on service calls in Manhattan, Brooklyn and Queens. Written by working technicians, not marketers. Call (212) 201-9201 when the fix is not DIY.
Guides
How-to and troubleshooting
How to clean an AC unit
End-to-end seasonal cleaning of a residential AC, from filter to condensate pan.
AC cleaning guideWhy is my AC not working
The most common reasons an AC stops cooling, and how a technician isolates each.
TroubleshootingAC leaking water
Water on the floor around an AC: drain pan, drain line, sleeve tilt and pump failures.
Leak diagnosisAC blowing hot air
When cool air stops: capacitor, refrigerant charge, thermostat wiring and controls.
Hot air fixAC service cost in NYC
What a diagnostic, a capacitor swap and a refrigerant leak actually cost in New York.
Pricing
Guides
Systems and buying decisions
How to choose the best air conditioner
Sizing, system type and installation constraints for NYC apartments.
Buying guideCentral AC maintenance
Annual maintenance tasks for a central AC in an NYC apartment or brownstone.
MaintenanceDuctless mini-splits vs central AC
Trade-offs for apartments choosing between a ductless retrofit and central AC.
ComparisonHVAC services for NYC landlords
Repair, maintenance and unit swaps for landlords managing tenant HVAC.
Landlord guideHow to clean a window AC unit
Deep clean and reinstall a window AC without wrecking the fins or drain.
Window unitUnderstanding commercial AC
Rooftop units, package systems and PTAC fleets: how commercial AC differs.
Commercial primer
Editorial policy
About the guides
- Written by working NYC HVAC technicians, edited for accuracy before publishing.
- Prices reflect New York City rates as of 2026, not national averages.
- We say when a task is DIY and when it needs an EPA 608 certified technician.
- No affiliate links; no invented reviews; no aggregated ratings.
- Guides are updated as building rules, refrigerant regulations and equipment change.
- If you spot a factual error, email info@acrepair.nyc and we will look at it.
Get service
Request a quote or call us directly
Prefer to have us handle it? Call (212) 201-9201 or send the symptom and building type via the quote form.
- Address
-
517 E 77th St
New York, NY 10075 - Phone
- (212) 201-9201
- info@acrepair.nyc
- Hours
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Monday–Friday 8:00–18:00
Saturday 9:00–15:00
Sunday closed · emergency line answered 24/7 - Service area
- Manhattan, Brooklyn, Queens