Flagship service
New-Construction & Builder HVAC in NJ & NY
New construction is what we do best. For builders and developers across New Jersey and New York, we size, lay out and install complete heating and cooling systems — from a single custom home to a full development of look-alikes.
We read off your plans, hold a price you can put in a contract, and keep our rough-ins on schedule so we're never the trade holding up your drywall. We've run HVAC for everything from large lakefront custom homes to a 21-unit apartment building in Long Branch.
- NJ Master HVAC License
- Free estimates
- Since 1998
25+
years building
NJ & NY
What's included
End-to-end on every new build
Load calculations and system design from your architectural plans
Ductwork, line sets and rough-ins coordinated with your framing schedule
Furnaces, air handlers, condensers and heat pumps — sized to the home, not guessed
Multi-unit and repeatable plans for developments and 55+ communities
Additions and light-commercial build-outs (strip malls, plazas)
Firm written bids you can hand to a buyer or lender
For builders & developers
Send us your plans for a free bid
Email a plan set or drop off drawings and we'll come back with a firm number — usually within a few business days, not weeks. We work with builders, developers, and GCs across New Jersey and New York on everything from a single custom home to multi-unit developments.
We've run HVAC on large lakefront custom homes, 55+ communities, strip mall additions, and a 21-unit apartment building in Long Branch. If it's residential or light commercial and it's in NJ or NY, we want to see the plans.
- Firm written bids you can put in a contract or hand to a lender
- Model-type pricing for developments and 55+ communities
- We read your plans — no back-and-forth on scope
- Work near the PA line for large developments
NJ Master HVAC License + Master HVAC Refrigeration. Licensed & insured.
"They bid the whole development at once off the plans, stuck to the number, and kept pace with framing. Exactly what a builder needs."
Built for builders
Built for builders, not just homeowners
Most HVAC shops are set up for service calls and bolt new construction on the side. We're the other way around: our crew's strength is new work, and we staff and schedule for it. That means a bid that comes back quickly, a rough-in that passes inspection the first time, and a finish crew that shows up when the house is ready — not three weeks late.
Working a development or a 55+ community? Send the plan set once and we'll price the model types so you can budget the whole project. We work near the Pennsylvania line for large developments as well.
Trusted since 1998
What builders say
We've built relationships with contractors across Monmouth County and beyond.
“Bel Air has done the HVAC on every home I've put up for the last four years. Their bids come back fast, the rough-ins pass inspection, and they're never the trade holding up my schedule. That's worth more to a builder than a low price.”
“We hired Bel Air for the HVAC across a full run of new homes. Same crew, same quality on every unit, and Valera priced the whole project off the plans up front so there were no surprises. We keep calling them back.”
“Our heat died at 5 in the morning in the middle of a cold snap with two little kids in the house. I left a message and got a callback right away — they had us warm again that same day. I won't use anyone else now.”
FAQ
Builder & new-construction HVAC — common questions
No fine print. If you don't see your question here, just call or send a note — we answer honestly, including when the right answer is "you don't need that."
How much does AC replacement cost in NJ?
For most New Jersey homes, a full central-air replacement runs roughly $7,000–$13,000 depending on the size of the home, the efficiency of the equipment, and whether ductwork or a furnace are part of the job. A high-efficiency or heat-pump system sits at the upper end but can qualify for rebates. We give a firm written estimate after we measure the home — no guessing off the phone.
Do you do HVAC for new construction?
Yes — new construction is our specialty. We design and install complete heating and cooling systems for new homes, developments, additions and light-commercial build-outs across New Jersey and New York. Send us your plans and we'll get you a firm bid you can put in a contract, usually within a few days.
What brands do you install?
We're an authorized dealer for Rheem, Ruud and Goodman, and we install and service all other major brands as well — Trane, Lennox, Carrier and more. We'll recommend the right equipment for your home and budget rather than pushing one label.
What areas do you serve?
All of New Jersey and New York. We're based in Monmouth County and regularly work towns like Marlboro, Manalapan, Freehold, Howell, Colts Neck, Holmdel, Middletown, Long Branch, Old Bridge and Edison, plus Brooklyn and Staten Island in New York. We'll also work near the Pennsylvania line for large developments.
Are you licensed and insured?
Yes. Bel Air Systems holds a New Jersey Master HVAC License plus Master HVAC Refrigeration, and we're fully insured. We're a family-owned contractor serving NJ and NY since 1998.
Do you offer 24/7 emergency service?
We return calls quickly and aim to get out for no-heat and no-cool calls the same or next day. Honest and reliable beats a promise we can't keep.
Get your bid
Send us your plans for a free bid
Email a plan set or call and we'll get you a firm number — usually within a few days, not weeks.
NJ Master HVAC License + Master HVAC Refrigeration. Licensed & insured.
Builder bids come back fast
Send us your plans and we'll get you a firm number — usually within a few business days. NJ Master HVAC License + Master HVAC Refrigeration. Licensed & insured.