Welcome to C&D Mechanical LLC
Serving New Hampshire from the Lakes region south, C&D Mechanical LLC is your trusted partner in residential and light commercial HVAC solutions. We are fully licensed and Insured, offering expert sales, service, installation, and maintenance.
Licensed & Insured
Whether it's installation, service, maintenance, our fully licensed and insured team ensures top-quality work
About our company
C&D Mechanical LLC is a family-owned and operated business proudly serving New Hampshire from the Lakes Region south. Born and raised here, we’re committed to delivering honest, high-quality HVAC and plumbing services to our neighbors.With over 10 years of experience, we specialize in residential and light commercial systems—keeping homes and businesses comfortable, efficient, and safe year-round.We take pride in our personalized service, expert craftsmanship, and reliable solutions. Whether you need a repair, seasonal maintenance, or a full system installation, our licensed and insured team is ready to help.We proudly support all active military and veterans.
If you're a veteran, be sure to let us know during your estimate—we offer exclusive discounts as our way of saying thanks.
What We Do
C&D Mechanical offers a full range of HVAC and plumbing services, including:
Mini Split Installation and Service
We offer single-zone systems, multi-zone setups for whole-home flexibility, and VRF systems for advanced efficiency and control. We use reliable, industry-trusted brands like Mitsubishi and Daikin to ensure lasting performance and comfort. Contact us today to learn more or schedule a free estimate.
Rooftop HVAC equipment
We install and service rooftop HVAC units for light commercial spaces, handling everything from proper sizing and crane lift to start-up and commissioning. To maximize uptime and reduce operating costs, we offer customizable preventive-maintenance plans that include seasonal inspections, filter changes, and performance reports.
Forced Hot Air & Central AC
We install and service ducted forced hot air systems and central air conditioning for homes and light commercial buildings. Whether your system runs on oil, gas, electric, or dual fuel, we design solutions tailored to your heating and cooling needs. Our installs include high-efficiency furnaces, air handlers. We use trusted brands and offer clean, professional installations with optional zoning and smart thermostat integration. Count on C&D Mechanical LLC for reliable year-round comfort and energy savings.
Forced Hot Water and Radiant Boiler Systems
We install high-efficiency forced hot water boilers for gas, oil, or electric systems—whether you're using baseboard or radiant heat. Our team is experienced in both new installations and system replacements. We work with reliable, trusted brands like Viessmann, Weil-McLain, IBC, and Buderus to ensure dependable, long-lasting performance. Contact us today to discuss the right heating solution for your home or business.
Plumbing Installation and Water Filtration
We provide plumbing installation for residential and light commercial projects, including water heaters, fixtures, and water filtration systems. Whether you're building new or upgrading outdated plumbing, our team ensures clean, code-compliant work using high-quality materials. We proudly offer whole-home water filtration solutions to improve water quality and protect your fixtures. While we aren’t a drain cleaning company, we’re happy to assist with minor clogs and routine fixture maintenance as part of our service. Trust C&D Mechanical LLC for dependable, honest plumbing done right the first time.
Our experienced team is ready to tackle any job, big or small, to keep your systems running smoothly.
Testimonials
Derek and Chris are awesome!! They came out on a Saturday morning on the coldest day this year and got me set up with 2 Mitsubishi mini splits. Garage and upstairs are nice and warm now.— Joshua Sim
Professional, Honest, and Quality Craftsmanship. After weeks of struggling to find a company to work on our HVAC, I was lucky that Chris reached out after seeing a post I made on Facebook. Besides making the necessary repairs in record time, I will be using C&D Mechanical on future projects as we replace our outdated HVAC units. If you're looking for a local company that will treat you with respect, I highly recommend giving them a call.— Andrew Updegrove
What are your hours of operation?
Feel free to call us anytime Monday through Friday from 7 AM to 4 PM. We are closed on Saturdays, Sundays, and all standard U.S. holidays. Emergency after-hours service is available for existing customers—just leave us a message and we'll get back to you as soon as possible.
Which areas do you service?
We proudly serve New Hampshire—from the Lakes Region south to the capital area and down to Salem, Nashua, and the surrounding areas. Contact us below to learn more about the services we offer in your community.
Contact us today
For more information, free estimates, or to book a service, reach out to us at: (603) 724-5600 Or at (603) 340-3902. Or send us a message using this form, and we’ll get back to you promptly.