Premier HVAC Services Across Nassau County, NY
Serving homeowners and commercial properties across Nassau County within our 15-mile operating radius from Deer Park with precision cooling diagnostics, high-efficiency heat pump conversions, and emergency HVAC repairs from Farmingdale to Garden City.
Towns We Serve in Nassau County
Select your town below to view localized service details, building department permit guidance, customer testimonials, and same-day dispatch arrival times:
Farmingdale
Town of Oyster Bay / Village of Farmingdale • Zip: 11735
1940s-50s ranches, village colonials, and modern multi-story townhomes.
Massapequa
Town of Oyster Bay • Zip: 11758
Waterfront split levels, canal-front ranches, and traditional South Shore two-story Colonials.
Massapequa Park
Town of Oyster Bay / Village of Massapequa Park • Zip: 11762
Charming village Colonials, brick-front capes, and renovated ranches.
Levittown
Town of Hempstead • Zip: 11756
Iconic 1940s-50s Levitt Capes and Jubilee Ranches. Built with radiant concrete slab heating and no central ductwork, making ductless mini-splits the gold standard solution.
Hicksville
Town of Oyster Bay • Zip: 11801
Expanded capes, split-levels, and multi-generational residences requiring zoned climate control.
Plainview
Town of Oyster Bay • Zip: 11803
Large center-hall Colonials, expanded split levels, and ranches with dual-system central air.
Syosset
Town of Oyster Bay • Zip: 11791
Luxury estate Colonials, sprawling custom contemporaries, and split levels requiring ultra-quiet, high-SEER2 inverter systems.
Licensed, Insured & Local Long Island HVAC Experts
Every K2 technician is EPA Section 608 certified and trained on the latest high-efficiency inverter heat pumps, variable-speed compressors, and communicating thermostats.
- PSEG Long Island Clean Heat participating contractor
- Town building permits filed and managed end-to-end
- Upfront flat-rate pricing with zero surprise overtime fees

Frequently Asked Questions in Nassau County
Local answers regarding 24/7 dispatch, PSEG Clean Heat rebates, and municipal permits.
Does K2 service Nassau County homes and businesses?
Yes. Dispatched from Deer Park across our primary 15-mile radius and immediate Nassau corridors, we service Farmingdale, Massapequa, Plainview, Hicksville, Levittown, and Syosset.
How quickly can K2 reach Nassau County for emergency HVAC repairs?
Via Route 110, the Southern State Parkway, and the Long Island Expressway, our emergency technicians typically arrive in Eastern and Central Nassau in 25 to 40 minutes.
Do Nassau County homeowners qualify for PSEG heat pump rebates?
Yes. As a PSEG Long Island Clean Heat Participating Contractor, K2 processes point-of-sale rebates up to $6,000+ for Nassau County residents converting to high-efficiency heat pumps.
What brands do you service and install in Nassau County?
We service and install Carrier, Mitsubishi Electric, Daikin, Bosch, Trane, Lennox, Rheem, York, and all leading HVAC brands.