Professional HVAC Services in Nassau County
Professional heating, cooling, air quality, and emergency HVAC services. Transparent pricing, certified technicians, and same-day availability.
Nassau County homeowners and businesses depend on reliable heating and cooling systems year-round. From sub-zero winter nights that push furnaces and boilers to their limits, to humid Long Island summers that demand peak AC performance, your HVAC system is the backbone of comfort. At Home+ Air & Heat, we provide the full spectrum of residential and commercial HVAC services—installation, repair, maintenance, and emergency response—backed by NATE-certified technicians and transparent, upfront pricing.
Whether you need a routine furnace tune-up before winter, a complete central AC installation, or a 24/7 emergency heating repair, our team arrives with fully stocked trucks and the expertise to diagnose and resolve issues the same day. We service all major brands, offer 0% APR financing on qualifying installations, and stand behind every job with a workmanship warranty. Explore our service categories below to find exactly what you need.
Our HVAC Services
From routine maintenance to emergency repairs, we cover every aspect of your home comfort system.
Cooling Services
7 servicesAC repair, central AC installation, mini-split systems, and tune-ups
Heating Services
12 servicesFurnace repair, heat pump installation, boiler service, and more
- Furnace Repair
- Heat Pump Installation
- Boiler Repair
- Furnace Installation
- Furnace Tune-Up
- Oil to Gas Conversion
Air Quality
7 servicesUV purifiers, humidifiers, duct cleaning, and ventilation solutions
- UV Air Purifiers
- Whole-Home Humidifiers
- Air Duct Cleaning
- Air Quality Testing
- CO Detectors
- Ventilation Improvements
Emergency Services
9 services24/7 emergency heating & cooling repair with 90-minute response
- Emergency Heating Repair
- Emergency AC Repair
- No Heat Emergency
- Furnace Won't Start
- Water Heater Failure
- Frozen Pipes
Additional Services
7 servicesThermostat upgrades, condenser cleaning, water heater service, and more
- Smart Thermostat Installation
- Thermostat Replacement
- Condenser Cleaning
- Water Heater Flush
- UV Light Installation
- Mini-Split Installation
When to Call an HVAC Professional
Recognizing these warning signs early can prevent costly breakdowns and keep your family safe.
Uneven Temperatures
Hot and cold spots throughout your home indicate airflow issues, ductwork problems, or an undersized system.
Strange Noises
Banging, squealing, or rattling from your furnace or AC signals worn bearings, loose parts, or a failing blower motor.
Rising Energy Bills
A sudden spike in heating or cooling costs—without usage changes—often means your system is losing efficiency.
AC Blowing Warm Air
Warm air from your AC could mean low refrigerant, a failed compressor, or a frozen evaporator coil.
Frequent Cycling
Your system turning on and off repeatedly (short cycling) stresses components and signals a thermostat or sizing issue.
Poor Indoor Air Quality
Excess dust, humidity, or musty smells indicate your HVAC system isn't filtering or ventilating properly.
Transparent Pricing
No fees. Know exactly what you're paying before work begins.
Annual Tune-Up
Heating or cooling maintenance
What Does HVAC Service Cost?
HVAC service costs depend on the type of work, your system, and the complexity of the job. Rather than quoting a single number, we provide upfront pricing after a technician inspects your system—so you know exactly what you're paying before any work begins.
For detailed pricing on specific services, visit our individual service pages:
Flexible Financing Available
Don't let budget concerns delay your comfort. We offer flexible financing options through Synchrony Bank to make upgrading your system affordable with low monthly payments.
Why Homeowners Choose Home+ Air
The trusted HVAC team in Nassau County
NATE-Certified Technicians
Every tech holds current NATE certification—the industry's gold standard for HVAC competency.
Transparent Pricing
Upfront pricing on every job. No fees — you approve all costs before work begins.
90-Minute Emergency Response
24/7 emergency service with a 90-minute response goal. No overtime charges, ever.
Warranty on All Work
Every repair and installation backed by our workmanship warranty plus full manufacturer coverage.
Flexible Financing
0% APR financing available on installations. Monthly payments that fit your budget.
Local Nassau County Company
Based in Jericho, NY. Locally owned and operated—serving Nassau County homeowners since day one.
Our 18-Point HVAC Inspection Checklist
Every tune-up and diagnostic includes a comprehensive system evaluation covering safety, efficiency, and performance.
Safety & Controls
System Components
Efficiency & Airflow
How We Work
Our simple 5-step process for heating, cooling, and air quality services
Call or Book Online
Reach us by phone or schedule online. We'll confirm a convenient appointment window.
Technician Dispatch
A NATE-certified technician arrives on time with a fully stocked truck for most common repairs.
Diagnose & Explain
We diagnose the issue, explain findings clearly, and present repair options with upfront pricing.
Complete the Work
With your approval, we complete the repair or installation efficiently—most jobs same-day.
Follow-Up & Warranty
We verify everything works, clean up, and provide warranty documentation for your records.
Summer Cooling Season
Frequently Asked Questions
Get answers to common questions about our services