Engineering-grade HVAC for builders and developers.
We design, install, and commission right-sized heating and cooling systems for new construction and major renovations. Manual J/D/S calculations, inspection-ready documentation, and a team that shows up on schedule.
Full-scope HVAC services.
From load calculations to final commissioning, we handle the entire mechanical scope for your projects.
HVAC Installation
AC, furnace, and mini-split installs sized to the building’s load.
View serviceDuctwork & Lineset Services
Duct and refrigerant-line design, sealing, and balancing to airflow targets.
View serviceMini Split & Heat Pump Systems
Single- and multi-zone cold-climate systems, commissioned to spec.
View serviceIndoor Air Quality
Filtration, humidity control, and UV. Designed in, not bolted on.
View serviceSmart Controls & Zoning
Zoning and smart thermostats set up to hold each zone’s setpoint.
View service
compliant
Engineered to perform. Built to last.
We don't guess sizes based on square footage. Every project starts with a room-by-room Manual J load calculation — so the equipment is right-sized, not estimated.
No guesswork sizing
Every project starts with an ACCA Manual J load calculation to determine the exact capacity required — per room, not per house.
Inspection-ready documentation
We provide Manual J, D, and S reports for every project — so permits clear and inspections pass without delays.
Reliable trade partner
We understand construction schedules. We show up when scheduled and coordinate seamlessly with other trades on your site.
The AirPrime Process
Site & Plans Review
We review architectural plans or walk the site to understand the building envelope and constraints.
Load Calculation
Using ACCA Manual J, we calculate the exact heating and cooling load for every room.
System Design
We select equipment (Manual S) and design ductwork (Manual D) that hits performance targets.
Installation & Commissioning
Our technicians install exactly to spec, verify airflow, and provide all documentation for inspection.
Recent projects.
382 Broadway St
Complete HVAC scope for a 10-unit residential building. We installed 10 individual outdoor heat pumps powering 23 indoor mini-split heads, plus 10 ERVs for fresh air. AirPrime also handled all bathroom, dryer, and kitchen hood venting.
43 Pleasant St
A comprehensive central ducted system featuring two furnaces (attic and basement). We performed a full Manual J load calculation specifically for this coastal property to ensure optimal sizing, and integrated an ERV for superior indoor air quality.
Laurel Hill Luxury Homes
HVAC contractor for a 22-home luxury development. Each single-family home features a gas furnace system serving both floors, paired with an ERV. We designed custom ductwork specifically to eliminate unnecessary soffits, preserving the architectural integrity of the homes.
Certified & Authorized
AirPrime HVAC Design holds the highest industry certifications and works directly with top manufacturers to ensure your project is built to last.
Fully Licensed & Insured
Operating legally throughout Massachusetts and New Hampshire with full liability coverage to protect your job site.
MA & NHEPA 608 Universal
Certified to handle, recover, and dispose of all refrigerants safely and legally.
Holder: Gustavo MirandaACCA Manual J/D/S
Engineering-grade load calculations and duct design for code compliance and optimal performance.
Right-SizedAuthorized to install and service top equipment brands
Trusted by builders across MA & NH.
AirPrime's attention to detail on the Manual J calculations saved us from failing inspection. Their ductwork is clean and their team is professional. They are our go-to HVAC contractor for all our new builds.
Gustavo and his team handled a complex 10-unit multi-family project for us in Somerville. The mini-split installations were flawless, and coordinating the ERVs and venting was seamless. Highly recommended.
We hired AirPrime for a custom home in Nahant. They designed a dual furnace system that works perfectly. They show up when they say they will, and their work is top-notch.
Need a quote for your next project?
Send us your project details or architectural plans. We'll review the scope and follow up within one business day to discuss load calculations and equipment options.