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:
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 instant point-of-sale PSEG Long Island Clean Heat rebates — currently up to $4,000 at market rate and up to $7,500 for income-qualified households. Amounts are set by PSEG and change over time.
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.