Built to last, sized to prove it.

AirPrime HVAC Design is an HVAC engineering and installation company in Ayer, Massachusetts. We design heating and cooling by calculation and install it to spec, for builders, contractors, and property managers who need it done right the first time.

AirPrime team member on site in front of a branded service vanOn site · AirPrime
Who we are

We size the system before we sell it.

Most HVAC problems start on paper, not in the field. Equipment picked by habit instead of calculated for the building is what causes the short-cycling, the cold rooms, the failed inspection, and the callback. We built AirPrime to do the opposite: a room-by-room load calculation first, then equipment matched to it, then a clean install documented for sign-off.

We work across Massachusetts and Southern New Hampshire on new construction, renovations, retrofits, and repairs. The audience is professional, so the deliverable is professional: right-sized systems, code-compliant work, and the paperwork to prove it, handed over at close.

How we work

Standards we hold on every job.

The same discipline whether it is one system or a multi-unit build.

Right-sized by calculation

Manual J load calc room by room, so equipment matches the building instead of a rule of thumb.

Code-compliant & documented

Work built to MA and NH code and manufacturer spec, with calcs, specs, and as-builts ready for inspection.

Clean workmanship

Quality materials and tidy, organized installs, sequenced around your other trades.

Honest, transparent scope

A written scope and clear pricing up front, so there are no surprises at handover.

The team

The people on your job.

A small, hands-on crew. You deal with the people doing the work, not a call center.

Gustavo Miranda, Owner of AirPrime HVAC Design, in front of a branded service van
OwnerGustavo MirandaRuns operations and works directly with GCs and clients on scope, pricing, and scheduling. 4+ years in the trade — your single point of contact from bid to handover.
Cristiano Jatva, Chief Estimator at AirPrime HVAC Design, in front of a branded service van
Chief EstimatorCristiano JatvaLeads estimating and Manual J load calculations. 8+ years of experience sizing systems by the numbers, so every bid is grounded in a real calculation.
Fulvio Pereira, Field Technician at AirPrime HVAC Design, on a job site
Field TechnicianFulvio PereiraOwns the job site — keeps every install running 100% to spec, from rough-in through commissioning. 6+ years of hands-on field experience.
Coverage

Massachusetts & Southern New Hampshire

Based in Ayer, MA. If your project is in the region, we can quote it.

Ayer, MA · HQBostonCambridgeNewtonWalthamLowellNashua, NHMerrimack, NHMilford, NH+ 45 more
AirPrime branded service van at a project siteOn the road across MA & NH
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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.

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