Load calculation
Manual J heat-loss and heat-gain, room by room, before any equipment is selected.
HVAC Installation
New systems sized by calculation and installed to spec, so they pass inspection the first time and hold up for years.
Designed to Manual J / D / SMA & NH code-compliantLicensed & insured
HVAC Installation · AirPrime
Overview
We install air conditioning, furnaces, and mini-split systems for new construction, renovations, and system replacements across Massachusetts and Southern New Hampshire. Every install starts with a room-by-room load calculation, not a rule-of-thumb guess, so the equipment matches the building instead of the invoice.
For builders and property managers, that means fewer callbacks, cleaner inspections, and a system the owner will not be fighting in year two. We sequence the work around your other trades and hand over full documentation at close.
What we deliver
Scope of the service
Equipment selection
AC, furnace, or heat pump matched to the calculated load and how each space is used.
Code-compliant install
Refrigerant, electrical, and venting to MA and NH code and manufacturer spec.
Commissioning
Startup, airflow balancing, and performance verification before we leave the site.
Documentation
Load calcs, equipment specs, and as-builts prepared for sign-off and warranty.
Designed by calculation, documented for sign-off.
Size
Sized to the building
Equipment is picked from the calculated load, so it is not oversized to short-cycle or undersized to fall behind.
Fit
Sequenced to your schedule
We phase rough-in through commissioning around your other trades, so HVAC is not what holds up the job.
Prove
Documented for inspection
Calcs, specs, and as-builts are ready at sign-off, so inspection is a formality, not a delay.
Common questions
Do you size equipment with a load calculation?
Yes. Every install starts with a Manual J heat-loss and heat-gain calculation, room by room, so the equipment matches the building instead of a rule of thumb.
Can you sequence the work around our other trades?
Yes. We phase rough-in through commissioning around your schedule, so HVAC is not what holds up the job.
What do we get for inspection and handover?
Load calcs, equipment specs, and as-builts prepared for sign-off and warranty, so inspection is a formality, not a delay.
Request a quote
Tell us about the project.
Send the details and we’ll follow up to set up a site assessment and load calculation. No obligation, no cost to quote.