C&D Mechanical logo C&D Mechanical LLC (603) 724-5600
C&D Mechanical service truck and trailer

Licensed & Insured · Est. 2022

Heating, Cooling & Plumbing — Done Right

Serving New Hampshire from the Lakes Region south, C&D Mechanical LLC is your trusted partner in residential and light commercial HVAC — expert sales, service, installation, and maintenance.

Fully licensed & insured — top-quality work on every installation, service, and maintenance call.

10+ years of experience — family-owned and operated, born and raised in New Hampshire.

Veterans: thank you. Active military and veterans get exclusive discounts — mention it during your estimate.

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.

Good to know

Hours
Monday–Friday, 7 AM–4 PM. Closed weekends and standard U.S. holidays. Emergency after-hours service is available for existing customers — leave a message and we'll get back to you.
Service area
New Hampshire from the Lakes Region south — the capital area down to Salem, Nashua, and surrounding communities.
Estimates
Free — call or send a message anytime.

What We Do

A full range of HVAC and plumbing services for homes and light commercial buildings.

Cooling + Heating

Mini Split Installation & Service

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.

Light Commercial

Rooftop HVAC Equipment

Installation and service of rooftop units for light commercial spaces — proper sizing, crane lift, start-up, and commissioning. Customizable preventive-maintenance plans include seasonal inspections, filter changes, and performance reports.

Heating + Cooling

Forced Hot Air & Central AC

Ducted forced hot air and central air conditioning for homes and light commercial buildings — oil, gas, electric, or dual fuel. High-efficiency furnaces and air handlers, clean professional installs, optional zoning and smart thermostats.

Heating

Forced Hot Water & Radiant Boilers

High-efficiency boilers for gas, oil, or electric systems — baseboard or radiant heat, new installations and replacements. We work with trusted brands like Viessmann, Weil-McLain, IBC, and Buderus for dependable, long-lasting performance.

Plumbing

Plumbing & Water Filtration

Plumbing installation for residential and light commercial projects — water heaters, fixtures, and whole-home water filtration. Clean, code-compliant work with high-quality materials, done right the first time.

Big or small — ask us

Our experienced team is ready to tackle any job to keep your systems running smoothly. Not sure if we cover it? Call and ask.

Contact us →

Recent Work

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Follow us on Facebook to see our latest projects.

What Customers Say

“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. 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

Read more reviews on Google.

Contact Us Today

For more information, free estimates, or to book a service, give us a call — we'll get back to you promptly.