What this actually costs, and what moves the number
Most contractor cost pages give you a range so wide it means nothing. This one gives you the two figures that are real and then the variables that decide where inside them you land.
Central plant, per unit
$30k–$300k+
A boiler, chiller or rooftop unit. One large line item.
Incentive covers
50–80%
Of total project cost, most landing up to 70%.
Heat pumps, mini-splits and PTACs sit well below that per-unit figure. They scale by count rather than by size, so a two-hundred-room hotel and a single boiler room can reach a similar total by completely different routes.
Why is there no price list?
Because the incentive is worth more than the equipment choice, and it is calculated from your building rather than from a catalog.
Two identical buildings running identical equipment can land at different points in the incentive range because of utility tier and usage pattern. A published price would be wrong for one of them, and the direction it is wrong in matters — a low quote that has to be corrected later is worse than no quote at all.
What we can tell you before any survey is the order of magnitude above, and which of the drivers below apply to your building. That is usually enough to decide whether to look further.
What is the honest way to compare repair against replacement?
Repair cost plus the running cost you keep paying, against replacement cost minus the incentive. Most owners compare only the first number in each pair.
Old plant does not fail loudly. A seized economizer, a short-cycling boiler or a constant-speed chiller produces no service call — it produces a higher bill every month, indefinitely. That ongoing cost belongs on the repair side of the comparison and almost never appears there.
The incentive belongs on the other side, and at 50–80% it is large enough to change the answer rather than nudge it.
| Driver | Effect on cost | Ask your contractor |
|---|---|---|
| What the equipment is | The widest variable by far. Central plant — a boiler, chiller or rooftop unit — runs from roughly $30,000 into the hundreds of thousands per unit. Heat pumps and PTACs are individually far smaller and scale by count instead. | Is this one large machine or many small ones? |
| How many units | A whole-roof or whole-property project prices very differently per unit than a single replacement, because mobilization, rigging and crane time are shared across the job. | Can we do the whole site in one project? |
| Access and rigging | Getting a chiller into a basement plant room costs more than landing a packaged unit on an existing roof curb. Access is often a bigger cost driver than the equipment on constrained sites. | What is the physical path in and out for this equipment? |
| Electrical capacity | Heat pump conversions sometimes need panel or service work. It is checked during the survey and priced in, rather than surfacing halfway through the job. | Does the existing service support the new load? |
| Venting and distribution | A condensing boiler vents and drains differently from the atmospheric plant it replaces. Where the chimney was shared with other appliances, that has to be resolved as part of the scope. | What happens to the existing flue and distribution? |
| Occupancy and schedule | Work in an occupied hotel or apartment building is sequenced around residents and guests. Off-season and overnight scheduling changes labour cost. | When can the building actually be worked in? |
| Coastal exposure | Within a few miles of the ocean, corrosion-resistant coils and cabinets are the correct specification. They cost more up front and are the difference between a fifteen-year install and a seven-year one. | How close to salt water is the equipment? |
Common questions
How much does commercial HVAC replacement cost in New Jersey?
It depends on the equipment class. Central plant — a boiler, chiller or rooftop unit — runs from roughly $30,000 into the hundreds of thousands per unit. Heat pumps and PTACs are individually much smaller and scale by how many you install.
How much do incentives reduce that?
Typical incentives run 50–80% of total project cost, with most projects landing at up to 70%. The exact figure depends on your utility tier and the building's energy usage.
Why will nobody quote a price over the phone?
Because the incentive is calculated from an energy model of your specific building, and that number moves the total more than the equipment choice does. A price before the survey would be a guess in both directions.
Is it cheaper to repair what we have?
In the short term, almost always. The comparison that matters is repair cost plus continued running cost against replacement cost minus the incentive — and on old, oversized plant that arithmetic often favors replacement sooner than owners expect.
Does a bigger project cost more per unit?
Usually less. Mobilization, rigging and crane time are shared across a job, so a whole-roof or whole-property project prices better per unit than replacing equipment one piece at a time.
Get the real number for your building
A survey and an energy model produce a figure you can take to ownership. That starts with a call.