AC Installation in Wellesley, MA

Cool Comfort That Actually Lasts

Professional air conditioning installation that keeps your Wellesley home comfortable all summer long.

A technician in a blue cap and shirt uses tools to repair an air conditioning unit on a rooftop. The image shows various wires inside the opened unit, with the technician focused on his work.

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Air Conditioning Installation Norfolk County

What Proper Installation Gets You

Your AC system should work when you need it most. That means those sweltering July afternoons when the humidity makes everything sticky and uncomfortable.

Proper air conditioning installation means your system runs efficiently from day one. No weird noises, no uneven cooling, no sky-high electric bills because someone cut corners during setup.

You get consistent temperatures throughout your home. The upstairs bedrooms stay as cool as the living room. Your system cycles on and off normally instead of running constantly or short-cycling.

Most importantly, you avoid the headache of callback visits and warranty issues that come with rushed or improper installation work.

Wellesley AC Installation Experts

We Know Norfolk County Homes

We’ve been handling HVAC and plumbing work for thousands of homeowners across Norfolk County. Our team understands how these older New England homes behave and what it takes to keep them comfortable.

We’re not the company that shows up, throws in a unit, and disappears. Our Dempsey Comfort Club keeps us connected with over 12,000 customers who trust us for ongoing maintenance and service.

When you work with us, you’re working with people who live and work in this area. We understand the local building styles, the common issues that pop up, and how to handle the unexpected problems that always seem to surface during installation work.

A person wearing a mask and blue overalls is standing on a ladder, working on a ceiling air conditioning unit.

AC Installation Process Wellesley

Here's How We Handle Installation

First, we assess your home’s cooling needs. This isn’t just measuring square footage – we look at insulation, window placement, sun exposure, and your existing ductwork to determine the right system size and type.

Next, we prepare the installation site. This means protecting your floors, clearing access routes, and making sure we have everything needed to complete the job without multiple trips or delays.

The installation itself involves connecting refrigerant lines, electrical connections, and ductwork modifications if needed. We test everything thoroughly before we consider the job complete.

Finally, we walk you through your new system’s operation and maintenance requirements. You’ll know how to change filters, what sounds are normal, and when to call us if something seems off.

Two technicians in blue overalls and orange shirts install an air conditioning unit on a white wall. One stands on a ladder while the other holds the unit.

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AC Replacement Services Wellesley

What's Included in Your Installation

Every air conditioning installation includes proper equipment sizing based on your home’s specific cooling load. We don’t guess or use rules of thumb – we calculate what your space actually needs.

You get professional installation that meets manufacturer specifications and local code requirements. This protects your warranty and ensures your system operates as designed.

We handle all necessary permits and inspections. You don’t need to worry about paperwork or scheduling with local authorities.

Your installation includes startup, testing, and a complete walkthrough of your new system. We make sure everything works properly and you understand basic operation and maintenance.

A technician in blue overalls is standing on a ladder and repairing a wall-mounted air conditioning unit in a bright room with large windows.
Most residential air conditioning installations take 6-8 hours for a straightforward replacement. If we’re installing a completely new system with new ductwork or electrical work, it might take a full day or two days depending on your home’s layout. Older Norfolk County homes sometimes present unexpected challenges like tight spaces or outdated electrical panels that can extend the timeline. We’ll give you a realistic timeframe after assessing your specific situation and let you know if we discover anything that might change our schedule.
The right AC size depends on your home’s square footage, insulation quality, window placement, and ceiling height. A unit that’s too small won’t cool effectively. A unit that’s too large will cycle on and off frequently, wasting energy and not removing humidity properly. We perform a proper load calculation that considers your home’s specific characteristics rather than using generic sizing charts. Most Wellesley homes need between 2-5 tons of cooling capacity, but the only way to know for sure is through professional assessment of your individual space.
If your system is over 10-12 years old and needs major repairs, replacement usually makes more sense financially. Newer systems are significantly more energy efficient, which means lower monthly bills. If you’re spending more than half the cost of a new system on repairs, or if your current system uses R-22 refrigerant (being phased out), replacement is typically the smarter choice. We’ll be honest about whether your current system is worth fixing or if you’d be better served investing in new equipment that won’t need constant attention.
Yes, we handle all permit requirements for your air conditioning installation. Wellesley requires permits for most HVAC work, and we’re familiar with local code requirements and inspection processes. We’ll pull the necessary permits, schedule inspections, and make sure everything meets local standards. This protects you from potential issues if you ever sell your home, and it ensures your installation meets safety and efficiency standards. The permit cost is typically included in your installation quote so there are no surprises.
Our installation work is backed by our service guarantee, and your new equipment comes with manufacturer warranty coverage. If you experience issues related to our installation work, we’ll return to address the problem at no charge. For equipment defects, we coordinate warranty service with the manufacturer. Our Dempsey Comfort Club membership also provides priority service and ongoing maintenance to prevent problems before they start. With over 12,000 customers in our service area, we have systems in place to track and respond quickly when our customers need support.
Absolutely. Many of our installations are in older New England homes that present unique challenges like limited electrical capacity, tight spaces, or existing ductwork that needs modification. We’re experienced with the common issues in older Norfolk County homes, including knob-and-tube wiring, small electrical panels, and ductwork that wasn’t designed for modern AC systems. Sometimes we need to coordinate with electricians for panel upgrades or run new ductwork, but we can usually find solutions that work within your home’s existing structure and your budget.