Hours of Operation: Available 24/7
- 196 King St. Hanover, MA | Phone : 781-536-8197
With 75 years of industry expertise, we are the most trusted choice for homeowners and businesses in Hanover and the South Shore.
Restoring comfort quickly with expert system issue diagnosis, fixing faulty components, and optimizing performance. We ensure reliable heating and
Whether you’re building or renovating, we provide complete HVAC design and installation services using high-efficiency systems built to deliver comfort, savings,
Replace outdated, inefficient systems with modern, energy-saving models. Our team helps you choose the right HVAC replacement for improved comfort,
Protect your investment with extended coverage on parts and labor, offering long-term confidence, predictable costs, and continuous comfort for years to come.
Custom-built ductwork designed and fabricated in-house for precise fit, improved airflow, and lasting performance, crafted with superior materials and expert
Regular tune-ups ensure your heating and cooling system runs efficiently, prevents breakdowns, and extends equipment life, keeping your home comfortable and your
Why Choose UsSince 1947, we've been the trusted choice for homeowners and businesses in Hanover, MA, and the South Shore for all their HVAC installation services and indoor air quality needs. Our technicians understand the unique comfort challenges of our South Shore communities and provide personalized service you can rely on. Whether you need a repair, replacement, maintenance plan, or air quality upgrade, we offer complete services to keep your home or business comfortable year-round. Contact us today and see why Cox's Old Colony is your one-stop shop for total comfort!
From small repairs to large-scale installations, we approach every project as neighbors.
We know your time is valuable. Expect punctual arrival and respect for your property.
Serving Hanover and neighboring communities for decades, we understand local needs and climate challenges.
Each team member is fully licensed and receives ongoing training for both residential and commercial HVAC repair services.
Receive transparent quotes and honest recommendations with no hidden costs.
Reliable arrival times with 24/7 HVAC repair services available for emergencies.
Our crews leave every workspace neat and clean, with attention to every detail.
Contact us online or by phone to schedule an appointment for repairs, installations, maintenance, or a free consultation.
Our expert technicians will diagnose the issue, discuss your needs, and provide a quote for your requested services.
Our team uses top-quality materials and industry best practices to ensure your HVAC systems work correctly and efficiently.
We offer preventive maintenance plans to keep your HVAC system running smoothly and efficiently, saving you money.
Based in Hanover, MA, Cox’s Old Colony serves both homeowners and businesses throughout the South Shore.
Are you looking for HVAC repair services? We’re proud to be your go-to provider in the following areas:
They replaced my Furnace and Central Air Conditioning in just a day and a half. They also threw in a new faucet installation at no extra charge. Everything with these guys is about making the customer happy. I will definitely use them again.
We finished renovations on half of the bathroom before we realized we were going to need to make some changes to the plumbing. We called Cox and they came out to give us an assessment.
I had a leakage in my kitchen sink so I called Cox's Old Colony and within 30 minutes they arrived. The price was cool and I must say they are very professional with their services. Now my leakage is fixed and I am a happy customer.
Old Colony has the best Customer Service hands down; They made sure I knew the costs and fees before proceeding with the job. They were polite and very attentive and even spent extra time making sure everything worked properly.
I had a good experience with Cox's Old Colony. They installed a complete heating and AC system in our home (2-furnaces and 2-AC). The crew was very professional, left my house clean every night and let me know when they will arrive the next day.
Our comprehensive HVAC maintenance service in Hanover, MA, includes a system inspection, filter changes, checking for leaks, safety checks, cleaning, and performance tuning. We identify small issues before they become major repairs.
Every home or business is different. Pricing depends on system size, repair complexity, and specific needs. We offer free up-front estimates, and you’ll always know what to expect before work begins.
Yes. Our technicians are on call for emergency HVAC services. If your system breaks down unexpectedly, call us any time—day or night.
Absolutely! Whether you own a home, retail space, or commercial property, we offer both residential and commercial HVAC installation services Hanover and nearby towns.
We are fully licensed and insured, with decades of experience as a trusted local plumbing and HVAC company in Hanover, MA.
