Comfort You Can Trust.
Limitless Options. One Company.
Comprehensive HVAC Solutions
Cooling Services
Expert AC installation, ductless mini-splits, and rapid repairs.
Heating Systems
High-efficiency furnace repair, heating system installations, and more.
Air Quality
Purification systems and humidifiers for safe air.
Boiler Repair
Specialized boiler maintenance and emergency repair services for Long Island homes.
Emergency HVAC
24/7 emergency response for heating and cooling failures when you need it most.
Commercial HVAC
Customized heating and cooling solutions for businesses and office complexes.
Heat Pump Repair & Maintenance
Professional heat pump repair, maintenance, and service across Long Island. K2 keeps your system efficient, reliable, and ready for year-round comfort. Call today.
Humidifier & Dehumidifier Services
Improve indoor comfort with professional humidifier and dehumidifier installation, repair, and service across Long Island. Trust K2 for balanced air quality.
HVAC Maintenance & Repair Services
K2 Heating & Air Conditioning provides expert HVAC maintenance and repair for heating and cooling systems across Long Island. Keep your home comfortable year-round.
Cost Estimator
- Instant price ranges for different systems
- Customized for your home size
- No commitment required
HVAC Instant Cost Estimate Tool
Why Choose K2
Special Offers
Limited Time Savings
$50 Off First Service
New customers get $50 off any repair or maintenance service.
Valid until: 2026-12-31
Free Thermostat with Install
Get a free smart thermostat with any new full system installation.
Valid until: 2026-06-30
24/7 Emergency Service
Our technicians are standing by to help restore your comfort.
Areas We Serve
Testimonials
"K2 Mechanical replaced my gas furnace cleanly and professionally. Highly recommended!"
Robert M.
Homeowner"I signed up for their maintenance plan last year and it has been a game changer. Friendly staff and great savings."
Jane Smith
Business Owner"Professional, courteous, and knowledgeable technicians. They replaced my furnace and did an amazing job."
Mike Johnson
Homeowner"K2 Mechanical replaced my gas furnace cleanly and professionally. Highly recommended!"
Robert M.
Homeowner"I signed up for their maintenance plan last year and it has been a game changer. Friendly staff and great savings."
Jane Smith
Business Owner"Professional, courteous, and knowledgeable technicians. They replaced my furnace and did an amazing job."
Mike Johnson
Homeowner"K2 Mechanical replaced my gas furnace cleanly and professionally. Highly recommended!"
Robert M.
Homeowner"I signed up for their maintenance plan last year and it has been a game changer. Friendly staff and great savings."
Jane Smith
Business Owner"Professional, courteous, and knowledgeable technicians. They replaced my furnace and did an amazing job."
Mike Johnson
HomeownerTrusted Brands We Work With
Latest HVAC News
Join Our Newsletter
Get the latest HVAC tips, seasonal offers, and company news delivered directly to your inbox.