Condenser & coil swaps
Replace an end-of-life outdoor unit and matching indoor coil. We re-spec the line set, vacuum and charge to manufacturer specs, and verify static pressure.
Central AC —
sized right, installed clean.
Most central AC complaints (humidity, cold spots, short cycles) come from the wrong-sized unit. We size on Manual J — not square footage rules of thumb.
- Manual J sizing on every install
- Trane, Carrier, Mitsubishi pro
- Mass Save rebates handled
Master Plumber #MP176295.0 on GoogleOpen 24 hours
Same-day callback
Get a quote on central ac installation
30 seconds. Rob calls you back personally.
Recent cooling work
View all
Bedroom mini-split installWellesley, MA 
Sunroom mini-split installNeedham, MA 
LG mini-split systemNewton, MA 
AC condenser installLakeville, MA
What we install
From a single condenser swap to a full duct redesign.
Most homes don't need a bigger AC — they need the right one, with ducts that actually carry the air. We handle both sides of the install.
Full-system replacements
AC + furnace/air handler combo replacement, all in one project, all under one warranty. Lowest total cost when the existing system is on its last legs.
Ductwork redesign
Adding rooms? Cold spots? We redesign ducts so air actually gets where it needs to go — often the difference between a comfortable and a frustrating system.
AC + heat pump conversion
If you're replacing the AC anyway, often a heat pump costs about the same after rebates and replaces both your AC and your furnace.
How it works
From phone call to walkthrough — done right.
1. Load & duct assessment
Manual J for the new tonnage, Manual D for duct sizing. We measure static pressure on the existing system to spot duct problems.
2. Honest written quote
Itemized — equipment, labor, line set, electrical, permit, disposal. No surprise charges later.
3. Clean install
Floors protected. Refrigerant lines vacuum-pulled and triple-evacuated. Charged by weight, then verified by superheat/subcool.
4. Commissioning + walkthrough
Static pressure verified, temperature splits measured, condensate routing confirmed. We walk you through the thermostat before we leave.
Why Competitive
We don't promise quality. We deliver it.
We size it for your house, not the catalog
Manual J load calc on every install — most contractors skip it. Wrong size = short cycling, comfort issues, and 20% wasted fuel.
Mass Save rebates handled for you
We're a registered Mass Save partner. Up to $10,000 in rebates on qualifying heat pumps and high-efficiency boilers — we file the paperwork.
Owner on every install
Rob is a Master Plumber (MA #MP17629). He's on every install personally — not a sales rep, not a sub.
Clean, labeled, serviceable
Our installs are diagrammed, labeled, and tidy. The next tech who walks in (even if it's not us) can service the system without guessing.
FAQ
Common questions about central ac installation.
Can you install AC in a house without ducts?
Yes — ductless mini-splits are the right answer in those cases. Single-zone for one room, multi-zone for whole-home. See our mini-split page.
How long does an AC install take?
Single-stage condenser/coil swap: 1 day. Full system replacement (AC + furnace): 1–2 days. Full ductwork redesign: 2–4 days depending on access.
What's the difference between SEER 14 and SEER 18?
Roughly 25% lower energy bills at SEER 18, but the unit costs more. We run the payback math with your actual usage and electric rate before recommending a tier.
More cooling services
Other cooling work we handle.
Reviews on Google5.0Don't take our word for it. Take theirs.
From neighbors across Lakeville, Plymouth, Newton, Needham, Wellesley and beyond.
“Rob's work is top notch. I'm a picky engineer. His choice of equipment, materials and his workmanship was excellent. In the bidding process, Rob was responsive, honest, competent, creative, and respectful.”
“He answered his phone at 6:30am. Within 15 minutes, Rob called and told me how to repair it myself — he did not take advantage of the situation. Saved me $300.”
“Rob was very professional and did an excellent job. Far surpassed my expectations. Will use him again in the future.”
“I recommend Rob with my highest level of support! Rob has installed multiple systems for me over the years.”
“His professionalism and craftsmanship went above and beyond what we expected. Highly recommend!”
“Great about keeping me in the loop. Very polite & respectful. Rob cleaned up on his way out — even brought his own vacuum.”
“Professional, very neat and orderly. Came when he said he would and did a great job.”
“Competitive Plumbing and HVAC was very responsive. I consulted with them and they did exactly what I wanted.”
Read more reviews on GoogleWhere we've done work
Based in Lakeville. We serve it all.
Every red dot is a job we've completed. We're rooted in Lakeville and travel across Massachusetts — don't see your town? Call us, we probably cover it.
- Lakeville, MAHQ
- Berkley, MA
- Boston, MA
- Plymouth, MA
- Bourne, MA
- Sandwich, MA
- Newton, MA
- Needham, MA
- Wellesley, MA
- Headquarters
- Service area
- Past job
Open right now
(508) 944-7623Ready to get it done right?
Call us. We answer 24/7 — and we'll tell you straight up what it takes to fix it.