Condensate Drain Line Cleaning, Repair & Installation
in NYC
That water dripping from the ceiling is not a roof leak — it is a clogged condensate drain. We clear, repair, and install condensate drain lines for AC systems, mini-splits, fan coils, and refrigeration equipment across NYC.
Same-Day Service
Stop Ceiling Leaks Fast
4.9 on Google & Yelp
Prevent Water Damage
Water is dripping from your ceiling and it is getting worse
Every air conditioner, mini-split, and fan coil produces condensation. When the drain line clogs — and in NYC's humid summers, they all do eventually — that water has to go somewhere. Usually it is your ceiling, wall, or floor.
Ceiling is dripping
A clogged condensate line overflows the pan and water seeps through your ceiling — a drip can turn to real damage within hours.
AC shuts off alone
Your float switch keeps cutting the AC off — not a mechanical fault, but the drain pan filling up from a clogged condensate line.
Musty smell from vents
Standing water in a clogged drain pan grows mold, and that musty smell from your AC is biogrowth you're breathing in.
Damage to floors and walls
Unseen condensate leaks warp floors and rot drywall — a $150 drain clearing prevents a $5,000+ water damage repair.
WHAT WE DO
Complete Condensate Solutions for Every System
From a quick drain clearing to a full condensate piping redesign — we handle every condensate drain issue for residential and commercial HVAC and refrigeration systems.
Drain Line Clearing
Stop the Leak Now
We clear clogged condensate lines using compressed nitrogen, wet-dry vacuum, and enzymatic treatments. Most clogs are cleared in under an hour. We also clean the drain pan, check the trap, and treat the line to prevent future buildup.
Condensate Line Installation
New AC, Mini-Split & Fan Coil Drains
New AC installation, mini-split mounting, or fan coil replacement — every unit needs a properly pitched condensate drain with a trap, clean-out access, and code-compliant termination. We design and install drain lines that flow reliably for years.
Preventative Drain Maintenance
Stop Clogs Before They Start
Add condensate drain clearing to your HVAC maintenance plan. We flush and treat every drain line during seasonal service — eliminating the algae and slime buildup that causes 90% of condensate clogs.
ALL HVAC SYSTEMS
Condensate Service for Every HVAC Brand
Every AC, mini-split, fan coil, and refrigeration unit produces condensation. We service condensate drain systems for every brand and type of equipment installed in NYC.
Worlds #1 HVAC manufacturer
Precision mini-split systems
Americas most trusted HVAC
High-efficiency systems
Reliable condensate removal
AC drain maintenance products
CLIENT TESTIMONIALS
Why NYC Calls ART HVAC for Drain Issues
Real condensate emergencies. Real fixes. Real relief.
HOW IT WORKS
From Drip to Dry in Four Steps
Most condensate drain clogs are cleared same-day, often within an hour of arrival.
Call Us
Describe the leak — location, which AC unit, how long it has been dripping. We dispatch same-day for active leaks.
Locate & Clear
We trace the condensate line, locate the clog, and clear it using nitrogen flush, vacuum, or mechanical means. Drain pan is cleaned and sanitized.
Treat & Prevent
We apply bio-treatment tablets and verify the float switch is working — preventing future clogs and protecting against overflow.
Verify & Clean Up
We run the AC, verify water flows freely through the drain, and clean up any mess from the leak. Most jobs are completed in under an hour.
SERVICE AREA
Areas We Serve
Proudly serving all five NYC boroughs and surrounding areas.
Brooklyn
Manhattan
Queens
Bronx
Staten Island
Long Island
Call us — we likely serve your neighborhood too.
FAQ
Questions We Hear Every Day
Practical answers about condensate drain issues.
Why is my HVAC leaking water? The condensate drain line is the first place to check: a clogged or improperly sloped drain lets the condensate pan overflow. Other causes include a frozen evaporator coil flooding on defrost, a cracked drain pan, or a faulty condensate pump. In NYC high-rises the condensate line may tie into a shared riser, so a blockage downstream can affect multiple floors simultaneously.
Knowing how to clean HVAC drain line on a ceiling cassette starts with powering down the unit and placing a drop cloth under the access port. Attach a wet-dry vac to the exterior drain outlet to pull the clog toward you rather than pushing it deeper. Flush with diluted bleach or a biocide tablet dissolved in water, then confirm free flow at the outlet. Monthly treatments prevent algae regrowth through humid NYC summers.
Is it normal for HVAC to drip water? Condensation forming inside and draining through the condensate line is completely normal. Water dripping outside the drain pan is not. On very humid NYC summer days, a functioning condensate drain line handles the extra load without overflow. Visible dripping from the unit cabinet itself typically signals a clogged drain line, a frozen coil thawing suddenly, or a misaligned pan — each needs prompt attention.
What causes HVAC to leak water after a recent drain cleaning is often a problem upstream of the drain line: a dirty evaporator coil producing excess condensate, a refrigerant charge issue causing the coil to frost and then flood during defrost, or a cracked condensate pan that leaks around the cleaned drain opening. Occasionally the drain line pitch is too shallow to self-clear and will block again within weeks unless the slope is corrected during the repair.
HVAC leaking water when heat is on points to one of two scenarios. In heat-pump mode, the outdoor coil frosts and defrosts cyclically; a blocked condensate drain line on the outdoor unit lets meltwater pool and drip inside. In high-efficiency gas systems, combustion produces acidic condensate from the secondary heat exchanger — if the condensate drain line for that exchanger clogs, water backs up into the unit. Both require drain line clearing and correct pitch.
Still have questions? Contact us
Water on Your Ceiling?
We Fix It Today..
Call for Same-Day Drain Service.
A clogged condensate drain is almost always the cause of AC-related water leaks. We clear it same-day, treat it to prevent recurrence, and save you thousands in potential water damage.