Big comfort.Built by Giants.
Ductless mini-splits, central air, gas heat and custom sheet metal — designed, installed and serviced by a Boston crew with 10+ years in the trade.
Built for Boston winters.
And Boston summers.
We’re a Boston crew that builds comfort from the sheet metal up. Free quotes. Straight answers. Clean installs. And we work hand in hand with you to fit your budget.
Years in the trade — from sheet metal to full systems.
For a quote. We come out, look, and price it straight.
Crew, start to finish — design, ductwork, install and service.
Your house.
Your climate.
Turn the dial, switch heat or cool, pick a fan speed. It’s the room-by-room control a ductless system gives you — spin the unit to take a closer look.
Winter doesn’t negotiate.
Gas furnaces, cold-climate heat pumps and air handlers sized for Boston’s worst January nights.
Third floor in July? Handled.
Central air, ductless mini-splits and Hi-Velocity systems that cool the rooms that need it most.
Everything
that moves air.
Heating, cooling and the sheet metal that connects it all — done in-house by one crew.
All services
Ductless Mini-Splits
Quiet heating and cooling with no ductwork — made for triple-deckers, condos and finished attics.
Central Air
A properly sized air handler and sealed ductwork for even, whole-house cooling.
Heat Pumps
Cold-climate heat pumps that heat through Boston winters and cool all summer.
Gas Heat & Furnaces
Natural gas furnaces and heat, installed right and ready for winter.
Air Handlers
New and replacement air handlers, installed clean and wrapped tight.
Sheet Metal & Ductwork
Custom trunk lines, transitions and insulated runs — our roots are in sheet metal.
Hi-Velocity Systems
Small-duct systems that snake through walls and closets where regular ducts won’t fit.
Repairs & Leak Detection
From a 6-head mini-split leak hunt to a system that just won’t keep up.
Light Commercial
Ductless and split systems for shops, storefronts and small offices.
Tell us about the space.
We’ll recommend the right system on a free, no-pressure quote.
Get a free quoteInside
the system.
Keep scrolling — fly through the ductwork.
Free on-site quote
We come to you, look at the space and what’s already there, and talk through options. No charge, no pressure.
Designed to fit
Equipment sized to your rooms and a clear, written price that works with your budget.
Clean install
Custom sheet metal, tidy line sets and sealed connections. We leave it cleaner than we found it.
Tested & walked through
Everything checked and running before we leave — and we show you how to use it.
Big on comfort.
Bigger on service.
Free quotes
Always. We come out, look, and price it straight.
Straight answers
What you need, what you don’t, and why — in plain language.
Fits your budget
We work hand in hand with you and shape the plan around your budget.
Clean job sites
Floors covered, debris out, and a walkthrough before we leave.
Recent
installs.
Real photos from real Giants jobs. More on Instagram.
Rooted in
Dorchester.
Working across Boston and the neighborhoods around it — and we’ll travel for the right job. We’ve worked as far out as Fitchburg.
Yes. We come out, look at the space and what’s there now, and give you a clear price — no charge and no pressure.
If your home has no ductwork (common in triple-deckers and older homes), ductless mini-splits are usually the cleanest option. If you already have ducts or want everything hidden, central air or a Hi-Velocity system may fit better. We’ll walk you through it on the quote.
Today’s cold-climate heat pumps are built to keep heating in freezing temperatures. The key is sizing the system right for your home — that’s what we do on the quote.
Massachusetts homeowners can often qualify for Mass Save® rebates and financing on eligible heat pump systems. Ask us on your quote and we’ll point you to what your home may qualify for.
Yes. If your heat or AC is down, call (857) 204-9207 and we’ll get you sorted as quickly as we can.
We install and service systems from brands like Daikin, Mitsubishi, LG, Bosch and more. Ask about your equipment.