With a legacy of reliability and a commitment to excellence, we’re your partners in creating the perfect indoor environment
Diamond Mechanical LLC is more than an HVAC company; it’s a story of values and community. Established in 2020, our journey is driven by honesty, integrity, and commitment to your comfort. We’re your neighbors, committed to serving with the care and respect of a friend. As a family-owned business, trust, loyalty, and dedication are at our core
Diamond Mechanical is a family-owned and operated HVAC company founded in 2020. We specialize in selling, servicing, and installing residential and commercial heating and air conditioning systems in New Hampshire and Southern Maine, including renowned brands like Mitsubishi and American Standard. Our skilled professionals can work on oil, gas, or propane systems. Get what you are looking for at a great competitive price.
Owner
Apprentice
When you choose us, you'll always know what you're paying for, with no hidden fees or surprises.
We take the time to understand your unique needs and offer tailored solutions for your HVAC challenges.
We are available day or night for emergency repairs throughout New Hampshire and Southern Maine.
Experience year-round comfort. We offer 24/7 emergency HVAC services, fair pricing, and over a decade of industry expertise. Serving New Hampshire and Southern Maine.
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