Cooling
Central AC Installation & Replacement
Right-sized, high-efficiency central air conditioning — professionally installed and backed by old-fashioned quality service since 1988.
Cooling
AC Installation & Replacement in Southeastern Massachusetts
When your central air conditioner reaches the end of its life, replacing it is one of the highest-impact upgrades you can make to your home — done right, a new system is quieter, far more efficient, and dramatically more comfortable on the hottest, most humid days of a Southeastern Massachusetts summer. Done wrong, an improperly sized or sloppily installed system can short-cycle, struggle with humidity, and cost you for years.
Quality Home Heating & Air has installed and replaced central air conditioning across the South Shore and South Coast since 1988. Every replacement starts with a proper Manual J load calculation — we size the system to your home, not to whatever was there before — and ends with a fully commissioned, verified install, not just a swap-out.
Most homeowners come to us because an aging system finally gave out, repair bills are adding up, or an older unit still runs on phased-out R-22 refrigerant that's now extremely expensive to recharge. Whatever the reason, we'll walk you through your options honestly — including high-efficiency systems that qualify for Mass Save rebates and 0% financing — so you can make the right call for your home and budget.
Signs it's time to replace your AC
- Your system is 12–15+ years old
- Repairs are getting frequent or expensive
- It still uses R-22 (Freon) refrigerant
- Rising electric bills every summer
- Uneven cooling or rooms that never get comfortable
- Constant short-cycling (turns on and off)
- The house feels humid even when it's running
- Loud operation, or it can't keep up on hot days
What causes these problems
Central AC systems typically last 12–18 years in our climate. As compressors, coils, and capacitors age, efficiency drops and breakdowns become more likely — especially when maintenance has been deferred. A system that needed one repair a few years ago often starts needing several.
Sizing is the other big factor. An oversized unit cools the air quickly but shuts off before it removes humidity, leaving the house clammy and short-cycling the compressor. An undersized unit runs constantly and still can't keep up. Both shorten equipment life — which is why we re-calculate the load on every replacement rather than matching the old tonnage by default.
Finally, refrigerant matters. Older systems use R-22, which has been phased out and is now costly and hard to source. Once an R-22 system develops a leak, recharging it repeatedly rarely makes financial sense compared with a modern, more efficient replacement.
How it works
Our process
- 1
In-home assessment & load calc
We evaluate your home, ductwork, and electrical, and run a Manual J load calculation to size the system correctly.
- 2
Honest options & quote
You get clear good/better/best options with upfront pricing — including efficiency levels, rebates, and financing — and no pressure.
- 3
Rebates & financing handled
We identify Mass Save rebates you qualify for and set up financing so the project fits your budget.
- 4
Old equipment removed
We safely recover refrigerant, remove and dispose of the old condenser and coil, and protect your home throughout.
- 5
Professional installation
New condenser, coil, line set as needed, electrical, condensate, and a new thermostat — installed to code and manufacturer spec.
- 6
Startup & commissioning
We verify refrigerant charge, airflow, and temperature split so the system performs to its rating, not just 'runs.'
- 7
Walkthrough & cleanup
We register your warranty, show you the new system and thermostat, and leave your home cleaner than we found it.
What's included
- Manual J load calculation (correct sizing)
- Code-compliant, professional installation
- Removal & responsible disposal of your old system
- New outdoor condenser + indoor evaporator coil
- New line set where required, with proper evacuation
- Electrical disconnect/whip and condensate handling
- New programmable or smart thermostat
- Refrigerant charge verified to manufacturer spec
- Full startup, airflow & performance verification
- Manufacturer warranty registration
Repair or replace?
Not sure whether to repair or replace? A good rule of thumb: if your system is under about 10 years old and the repair is minor, repair usually wins. Once a unit is 12–15+ years old, needs a major component (compressor, coil), or runs on R-22, replacement is almost always the smarter long-term decision.
A simple test is the repair-cost rule — if a repair costs more than about a third of a new system (and the unit is well into its second decade), you're usually better off replacing. Factor in summer energy savings from a modern high-SEER2 system, plus Mass Save rebates and financing, and replacement often costs less over time than nursing an old system along.
We'll always give you the honest answer for your situation — sometimes that's a repair. Our job is to help you make the decision you'd make if you knew everything we know.
Why QHH
Why homeowners choose Quality Home Heating & Air
The brands we install
These are the lines we install and recommend — and we repair & service every major brand.
Affordable ways to pay
Financing & Mass Save rebates
Rebates are just one piece — we pair them with flexible financing so the right system fits your budget.
Flexible Financing
- 0% promotional financing
- Terms up to 60 months
- Long-term plans up to 10 years
- Low monthly payments · fast approval
Mass Save Rebates
As a Mass Save partner, we help you claim the rebates and HEAT Loan financing you qualify for on eligible high-efficiency equipment — and we handle the paperwork. Rebates stack on top of your financing.
Good to know
AC Installation & Replacement — frequently asked questions
Related services
AC Repair
Cooling problems? We diagnose and fix A/C issues fast — any make or model.
Learn moreAC Maintenance
Pre-season tune-ups that maximize comfort and prevent breakdowns.
Learn moreHeat Pump Installation
High-efficiency heat pump installation for year-round comfort — and big Mass Save rebates.
Learn moreMini Split Installation
Ductless mini split installation for room-by-room comfort — efficient and Mass Save eligible.
Learn moreWhere we work
AC Installation & Replacement across our service area
Serving 22 towns from our 3 local offices.
Over 260 Five-Star Reviews
Old Fashioned, Quality Service® See why your neighbors across Southeastern Massachusetts trust Quality Home Heating & Air.
“Kevin was great. He took the time with us to describe all options, and the pros and cons of each. His men did the job quickly and efficiently, leaving no trace other than the work they had done. It has only been a few days since they put in our system, but the difference from our old system is evident.”
“From the first call to the final walkthrough, the whole team was professional and on time. Our new system runs better than we expected and the price was fair.”
“Honest, knowledgeable, and clean. They explained every option, never upsold us, and had our system running the same day.”
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Old Fashioned, Quality Service® Proudly serving Southeastern Massachusetts.