Research by Ivan Tchesnokov
The Short Answer
YES — HVAC equipment installations and replacements require a mechanical permit.
All HVAC equipment installations require a mechanical permit via City Squared at yonkersny.gov/219 (use Chrome). NY licensed HVAC contractor required. HIC license for contractor managing project (Consumer Protection Bureau: 914-377-3000). No HERS testing (NY). Cold-climate heat pump (NEEP ccASHP, -13°F) recommended for Yonkers ~10°F design temperature. Con Edison rebates and NYSERDA incentives available.
Every project and property is different — check yours:

Yonkers NY HVAC permit rules

Yonkers DHB requires mechanical permits for all HVAC equipment installations and replacements. Apply through City Squared at yonkersny.gov/219 (use Chrome). NY licensed HVAC contractors are required. HIC license required for general contractors managing the project — Consumer Protection Bureau: 914-377-3000. New York does not require HERS third-party testing (California-specific). Con Edison serves Yonkers for both electricity and natural gas (1-800-752-6633 / coned.com).

Yonkers' CZ5A climate (NYC metro, design temperature approximately 10°F) makes heat pump installations highly cost-effective. Cold-climate heat pumps (NEEP ccASHP, -13°F rated) are recommended for effective performance at Yonkers winter temperatures. Con Edison rebate programmes and NY State NYSERDA incentives both apply to qualifying heat pump installations in Yonkers — check coned.com and nyserda.ny.gov for current programmes before finalising equipment selection.

Many Yonkers homes use steam or hot-water radiator systems heated by gas boilers. Converting to heat pump requires either replacing the distribution system or using high-temperature heat pumps designed for radiator systems. Specify contractors with hydronic-to-heat-pump conversion experience for radiator homes.

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Cold-climate HP specs, NY HVAC license, Con Edison and NYSERDA rebates.
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Three Yonkers HVAC scenarios

Scenario A
Gas boiler replacement — steam radiator system
Mechanical permit via City Squared. NY licensed HVAC. HIC for project management. Con Edison Gas: confirm service capacity. Steam systems: NY licensed plumber may be needed for steam piping.
Mechanical permit via City Squared | NY licensed HVAC | Con Edison Gas | HIC | ~$6,000–$14,000
Scenario B
Cold-climate heat pump — Con Edison and NYSERDA rebates
Mechanical + electrical permits via City Squared. NY licensed HVAC + electrician. HIC. Con Edison Gas cap-off; Con Edison Electric capacity. Cold-climate HP: NEEP ccASHP -13°F. NYSERDA + Con Edison rebates. No HERS.
Mechanical + electrical permits | NY licensed trades | Cold-climate HP | Con Edison + NYSERDA rebates | No HERS | ~$10,000–$22,000
Scenario C
Mini-split for apartment or addition — no ductwork needed
Mechanical + electrical permits via City Squared. NY licensed HVAC + electrician. HIC. Cold-climate mini-split. Con Edison and NYSERDA rebates may apply.
Mechanical + electrical permits | NY licensed trades | Cold-climate mini-split | Rebates may apply | ~$4,000–$8,000 per zone

Every project is different.

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FactorWhat it means for your project
NY licensed HVAC contractor requiredNY State license for mechanical permit work.
No HERS testing (NY)New York does not require HERS.
Cold-climate heat pump (~10°F design)NEEP ccASHP -13°F recommended for Yonkers winters.
NYSERDA + Con Edison rebatesnyserda.ny.gov + coned.com for current heat pump incentive programmes.
HIC license — Consumer Protection Bureau914-377-3000.
Yonkers HVAC: cold-climate HP, NY license, Con Edison and NYSERDA rebates, no HERS
Full HVAC permit checklist.
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Yonkers Dept. of Housing and Buildings (DHB) City Hall, 40 South Broadway, Yonkers, NY 10701
Main: 914-377-6500 | Plan Examiners: 914-377-6506, 6522, 6507, 6532
City Squared portal: yonkersny.gov/219 (use Chrome)
Plumbing: 914-377-6566 | Electrical: 914-377-6502
Consumer Protection Bureau (HIC): 914-377-3000
Con Edison (gas & electric): 1-800-752-6633 | coned.com
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Common questions about Yonkers, NY hvac permits

What HVAC license is required in Yonkers NY?

New York State requires a licensed HVAC/refrigeration contractor for mechanical permit work. HIC license is required for general contractors — Consumer Protection Bureau: 914-377-3000. Apply through City Squared at yonkersny.gov/219 (use Chrome).

Are Con Edison rebates available for heat pumps in Yonkers?

Yes. Con Edison offers rebate programmes for qualifying heat pump installations in its service territory including Yonkers. NYSERDA also offers incentives for qualifying heat pump systems. Check coned.com and nyserda.ny.gov for current programme amounts and eligibility requirements.

Information based on Yonkers, NY official sources and applicable state/local building codes as of April 2026. Codes and fees change — verify current requirements before starting work. For a project-specific report, use our permit research tool.