Mechanical Contracting
We handle any residential or commercial construction project at any stage — design, build, and maintain heating, cooling, refrigeration and piping systems.
Learn more → Family-owned HVAC · Long Island
Where modern technology meets old-fashioned service.
Commercial and residential heating, cooling and mechanical contracting — delivered with honest pricing, prompt service, and workmanship you can rely on. In the business since 1995.
30+ Years in the trade
100% Family owned & operated
24/7 Emergency service
Licensed & InsuredCommercial · Residential
Est.
2011 Incorporated
2011 Incorporated
Who we are
A family business built on integrity — not shortcuts.
Alternative Cooling & Heating is a family owned and operated company started in 2011 by Robert Ilardi Jr., after being in the business since 1995. We provide prompt service, fair and honest pricing, and quality installation of all types of commercial and residential HVAC equipment.
- Prompt, professional service on every call
- Only the best materials and workmanship in every install
- Known for reliability, comfort and real value
- Hard work, honesty and integrity — built into every job
What we do
Full-service HVAC & mechanical contracting
From small retrofits to large-scale commercial builds, our mechanical division is equipped to handle all types of engineering and installation work.
HRV Ventilation
Heat Recovery Ventilators continuously exhaust stale, humid air and introduce fresh, dry, pre-warmed air — reducing condensation, mold and mildew.
Learn more →BRV Ventilation
A Between Room Ventilator is a low-cost solution to common air-pressure problems — minimal installation, balanced pressure between every room.
Learn more →Plus a full range of additional services:
RooftopsCommercial & Residential Split SystemsMini SplitsChill WaterHot WaterPTAC / VTACWater Source Heat PumpDuct WorkPipingInternet-Based Redlink Thermostats
Who we serve
Built for commercial & residential alike
Commercial Keep your business comfortable & running
Engineering, installation and planned maintenance for offices, retail, factories and multi-unit properties — set up monthly, quarterly, or tailored to your budget.
Commercial HVAC →
Residential Comfort for every room of your home
From full system installs to mini-splits, ventilation and smart thermostats — quality equipment, expert installation, and service that treats your home like our own.
Residential HVAC → Why choose us
The difference is in how we work
Prompt Service
We show up when we say we will — and most of our service customers have stayed with us since the beginning.
Honest Pricing
Fair, transparent quotes with no surprises. The price we quote is the price you pay.
Quality Workmanship
Only the best materials and craftsmanship in every installation, large or small.
Reliability & Integrity
Hard work, honesty and integrity built into every single service call we run.
1995
In the trade since
30 +
Years of experience
100 %
Family owned
24/7
Emergency service
Trusted by
Businesses that count on us
Many of our customers have been with us since the beginning.
NY Spine
Long Island Motor Cars
New Horizon Graphics
Pulse Magazine
High-Rise Properties
Riella's Homestyle
Long Island Paneling
Farmingville Fire Dept
Report Investment
Aston Martin / McLaren
Testimonials
What our customers say
Service area
Proudly serving Long Island
Family-owned and locally based — we cover homes and businesses across Nassau and Suffolk County.
- Farmingville
- Ronkonkoma
- Patchogue
- Holbrook
- Hauppauge
- Smithtown
- Islip
- Brookhaven
Request service
Ready for comfort you can count on?
Tell us what you need and we'll get right back to you with honest, straightforward next steps. For urgent issues, call us directly — we're here 24/7.
- Fast response from a real, local team
- Free, no-pressure estimates
- Commercial & residential, sales · service · installation