603-430-9414 Services About Us Residential Commercial Blog Rebates & Financing Mitsubishi Electric Ductless Careers Contact Us Schedule Appointment COMMERCIAL HEATING & AIR CONDITIONING We specialize in the installation of Mitsubishi Electric/VRF, and Rheem unitary equipment. We are a certified Diamond Commercial Contractor and proud to be 1 of 5 DCC’s in all of NH! Diamond Commercial Contractors possess deep product knowledge, expertise and experience with Mitsubishi Electric VRF systems, as demonstrated by a series of eligibility requirements and qualifications. As a result, Diamond Commercial Contractors are particularly well-suited to represent CITY MULTI® products in design-build, retrofit and build-to-suit project applications. For hydronic heating and domestic hot water production, we specialize in Bosch and PurePro. Upon special request, we are trained and qualified to install any manufacturer that you desire. If you’re a business owner, property manager, or commercial developer looking for a trusted HVAC partner, we’d love to talk. Contact us today. Commercial HVAC Installation Commercial Installation Our technicians are trained and experienced in all walks of light-commercial HVAC work, and consistency go above industry standards for quality and code regulations. Leave the design process to us; we partner with local Engineers to provide affordable stamped mechanical sets for building owners and developers. Once a mechanical design has been established, there is no better team of installers in the seacoast area. From mill renovations, to strip mall complexes, our business revolves around your comfort. Please contact us for bidding opportunities on equipment change-outs, or new construction. Recent Commercial Construction & Renovations: Ray Farms Condos and Clubhouse – Exeter NH Washington Street Mill Renovation – Dover NH Westerly Building B Condos – Portsmouth NH Brewery 145 Apartments – Portsmouth NH 18 Ton Mitsubishi VRF @ Roost Restaurant – Dover NH Hilltop School Redevelopment – Somersworth NH Saco Mill Redevelopment & Renovation – Saco ME Underground Firing Range VRF – Newington NH Millbrook Office Park Building – Stratham NH AIMS Waste Water Treatment – Pease Air Base 273 Corporate Drive Renovations – Pease Air Base 50,000 SQFT Office Addition – Newington NH Frank Jones Mill Renovations – Portsmouth NH 140 Ton AAON Desiccant Unit – Newington NH 32 Ton Mitsubishi VRF @ Underground Production Spaces – Newington NH 40 Ton Mitsubishi VRF @ Carey Cottage – Portsmouth NH 36 Ton Mitsubishi VRF @ Mezzanine Fitup – Newington NH Buxton Oil Office Renovation – Epping NH CONTACT US P: 603-430-9414 F: 603-427-6688 Email us! Privacy Policy LOCATION ADDRESS 436 Shattuck Way Newington, NH 03801 MAILING ADDRESS PO Box 8213 Portsmouth, NH 03802-8213 SIGN UP BELOW FOR OUR QUARTERLY NEWSLETTER, SPECIAL OFFERS & HVAC TIPS! Email Web design & development by: DARCI CREATIVE © Copyright - East Coast HVAC