Every system engineered for your home.
We don't sell off-the-shelf HVAC. Every ThermoNex installation starts with a Manual J load calculation and ends with a system sized exactly for your home's heat loss, layout, and budget.
Cold-Climate Heat Pumps
Efficient heating & cooling down to -13°F
Modern cold-climate heat pumps deliver reliable warmth even in the harshest New York and New Jersey winters — with efficiency ratings that slash energy bills compared to gas or oil. We size every system using Manual J load calculations so you get the right capacity, not an oversized unit that short-cycles.
Ductless Mini-Splits
Room-by-room comfort, no ductwork needed
Ductless mini-split systems are perfect for NYC brownstones, NJ colonials, and any home where running new ductwork isn't practical. Each zone gets its own thermostat, so every room stays at exactly the right temperature — no more hot spots or cold corners.
Heat Pump Water Heaters
Up to 3× more efficient than electric resistance
Heat pump water heaters use the same refrigerant-cycle technology as your HVAC system to produce hot water at a fraction of the cost of a traditional electric tank. They also qualify for significant state and utility rebates, making the payback period surprisingly short.
Boiler & Furnace Replacement
Upgrade your aging system the right way
If your boiler or furnace is aging out, we'll assess whether a heat pump retrofit makes sense for your home — or help you replace like-for-like with a high-efficiency unit. We never push equipment you don't need, and we'll walk you through every option with honest numbers.
Home Electrification & Rebates
Up to $10K+ back in NY, $8.9K+ in NJ
Navigating state and utility rebate programs is complicated — we handle all of it. From NYS Clean Heat to NJ Clean Energy, we identify every incentive your project qualifies for, prepare the paperwork, and submit on your behalf so you capture the maximum savings.
Maintenance Plans
Keep your system running at peak efficiency
Annual tune-ups extend equipment life, maintain manufacturer warranties, and catch small issues before they become expensive repairs. Our maintenance plans include a full system inspection, filter service, refrigerant check, and a written performance report after every visit.
Manual J Load Calc
Every project starts with a full heat-loss and heat-gain calculation — the engineering standard for right-sizing HVAC.
No Upselling
We recommend the system your home actually needs. If a simpler solution works, we'll tell you.
Rebate Paperwork Handled
We identify every incentive you qualify for and submit all paperwork on your behalf.
Get Started
Ready to get started?
Join our waitlist for priority access to consultations, rebate guidance, and installation scheduling when we launch in 2027.
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