The best-rated HVAC serving Nassau County (New York City, NY), independently researched and ranked on rating, review volume and genuine local reputation.
The best HVAC companies in Nassau County, New York City, NY are T.F. O'Brien Cooling & Heating, Universe Home Services, Cool Bros Corp, Apple Air Heating, Cooling, Electric & Plumbing and Imperial Cooling Inc. Each is an independently researched local operator, ranked on reputation, reviews and genuine local presence, and none paid to appear.
One business can feature above the Top 5 on this page, clearly labeled. A great way for a newer or smaller pro to get seen first.
T.F. O'Brien has kept Nassau County homes comfortable for more than 85 years, founded by Thomas Francis O'Brien and now run by the fourth generation of the family from its New Hyde Park headquarters. The team specialises in heating and air conditioning installation, repair and maintenance, with deep familiarity with the county's varied older housing stock. Decades of continuous local service and a strong, well-established review reputation make it one of the most trusted HVAC names serving the Hempstead area.
Family-owned since 1954, Universe Home Services is one of Long Island's longest-established home-comfort companies, serving Hempstead and the wider Nassau and Suffolk area from its Seaford and Farmingdale bases. The company offers full heating and cooling installation, repair and maintenance alongside plumbing and electrical work, with 24/7 emergency support. Its seven decades in business and large, steady base of positive customer feedback give it strong standing among local HVAC providers.
Cool Bros Corp is a family-owned HVAC contractor based in Lynbrook, just a few miles from Hempstead, serving homes and businesses across Nassau County including Hempstead, Garden City, Valley Stream and Freeport. The team focuses on central air and heating installation, repair and maintenance, and offers emergency service on nights, weekends and holidays. Its close local coverage and well-regarded customer reputation make it a practical choice for Hempstead residents.
Founded in 1985 and led by Tony Bisignano, Apple Air is a long-running Long Island home-services company operating from Farmingdale and covering Nassau and Suffolk communities. Alongside air conditioning and heating installation and repair, the team handles electrical and plumbing work, giving homeowners a single accountable contractor. Four decades in business, a licensed and insured operation and a strong volume of positive reviews underpin its reputation across the region.
Imperial Cooling is a family-owned and operated HVAC contractor based in the heart of Nassau County, serving Hempstead and neighbouring towns. The team diagnoses, repairs, maintains and installs heating, ventilation and air conditioning systems, including ductless and central air, for both residential and commercial properties. As a smaller independent operator with a solid local reputation, it suits homeowners who want a hands-on, locally rooted HVAC company.
The best HVAC companies serving Nassau County, New York City, NY are based in and around New Hyde Park, Seaford, Lynbrook, Farmingdale and Nassau County. With the Northeast's four seasons and older housing stock to contend with, heating and cooling systems work hard for most of the year, so a proven local pro makes all the difference, and we've done the legwork to surface only the operators worth calling.
T.F. O'Brien Cooling & Heating currently tops the list, but every business here earns its place the same way: we research each HVAC company genuinely operating near Nassau County, New York City, weigh real customer reviews and ratings from sources like Google and the Better Business Bureau, and rank on merit. No business can pay into this list, the single featured spot above it is the only paid placement, and it's always clearly labeled.
| Business | Best for |
|---|---|
| 1. T.F. O'Brien Cooling & Heating | Consistent, top-reviewed service |
| 2. Universe Home Services | Fast response and repairs |
| 3. Cool Bros Corp | Professional workmanship |
| 4. Apple Air Heating, Cooling, Electric & Plumbing | Dependable service and value |
| 5. Imperial Cooling Inc | Everyday, all-round jobs |
Our current top picks are T.F. O'Brien Cooling & Heating, Universe Home Services, Cool Bros Corp, Apple Air Heating, Cooling, Electric & Plumbing and Imperial Cooling Inc. Every business is independently researched and ranked on merit, never paid placement.
We research every HVAC company genuinely operating in and around Nassau County, New York City, then weigh real customer reviews and ratings from sources like Google and the Better Business Bureau, review volume, and a genuine local track record. No business can pay to appear in the ranked Top 5.
No. The ranked Top 5 is editorial and cannot be bought. The only paid option is the single featured spot above the list, which is always clearly labeled as featured.
Start with the five above, then get written quotes from two or three, read their most recent reviews, and confirm they cover your part of Nassau County, New York City. A good HVAC company responds promptly, explains the work clearly, and is upfront about pricing.
We rank on independent reputation and reviews, not licensing checks. Requirements vary by state and trade, so always confirm a pro's current license and insurance directly with them before any work begins.
Own the featured spot above this Top 5, clearly labeled. A great way for a newer or smaller pro to get seen first. Early-adopter rate $19/month for your first 6 months, then $39/month.